Sep. 2001 GT-6(T)
SERVICE NOTESFirst Edition
Issued by RJAGuitar Effects ProcessorTABLE OF CONTENTSTABLE OF CONTENTS ...................................................1SPECIFICATIONS.............................................................2LOCATION OF CONTROLS PARTS LIST ...................4LOCATION OF CONTROLS ..........................................4EXPLODED VIEW PARTS LIST .....................................6EXPLODED VIEW ............................................................6WIRING DIAGRAM.........................................................8PARTS LIST........................................................................9IDENTIFYING THE VERSION NUMBER ..................14TRANSMITTING / RECEIVING DATAVIA MIDI..........................................................................14BULK DUMP ...................................................................14BULK LOAD....................................................................14
TEST MODE.....................................................................14RESTORING THE FACTORY SETTINGS(FACTORY RESET).........................................................19HOW TO UPDATE SYSTEM SOFTWARE .................19BLOCK DIAGRAM.........................................................21CIRCUIT BOARD (MAIN) ............................................22CIRCUIT BOARD (MAIN) ............................................24CIRCUIT DIAGRAM (MAIN 1/2) ...............................26CIRCUIT DIAGRAM (MAIN 2/2) ...............................28CIRCUIT BOARD (SW SHEET) ....................................30CIRCUIT DIAGRAM (SW SHEET) ..............................32ERROR MESSAGE ..........................................................34
Copyright © 2002 ROLAND CORPORATIONAll rights reserved. No part of this publication may be reproduced in any form without the written permission of ROLAND CORPORATION.
Printed in Japan (0800) (CM)17058013E0
Sep. 2001
SPECIFICATIONS
GT-6: Guitar Effects Processor• AD Conversion
24 bit + AF method
• DA Conversion
24 bit
• Sampling Frequency
44.1 kHz
• Program Memories
340: 140 (User) + 200 (Preset)
• Nominal Input Level
INPUT: -10 dBu
RETURN: -10 dBu
• Input Impedance
INPUT: 1 M ohms
RETURN: 220 k ohms
• Nominal Output Level
OUTPUT: 0 dBu
SEND: -10 dBu
• Output Impedance
OUTPUT: 2 k ohms
SEND: 2 k ohms
• Digital Output
EIAJ CP1201, S/P DIF
• Dynamic Range
100 dB or greater (IHF-A)
• Controls
< Front Panel >
(PREAMP/SPEAKER)
TYPE knob
GAIN knob
BASS knob
MIDDLE knob
TREBLE knob
LEVEL knob
SPEAKER knob
On/Off button
TYPE VARIATION button
(OVERDRIVE/DISTORTION)
TYPE knob
DRIVE knob
LEVEL knob
On/Off button
TYPE VARIATION button
(DELAY)
FEEDBACK knob
LEVEL knob
On/Off button
TAP button
(CHORUS)
LEVEL knob
On/Off button
(REVERB)
LEVEL knob
On/Off button
(WAH)
On/Off button
(EQ)
On/Off button
(FX-1)
On/Off button
(FX-2)
On/Off button
(MASTER)
PATCH LEVEL knob
PARAMETER buttons L/R
EXIT button
WRITE button
EZ TONE button
PEDAL ASSIGN button
OUTPUT SELECT button
TUNER/BYPASS button
NAME/NS/MASTER button
UTILITY button
MANUAL button
Number pedals1-4
BANK pedals (Up/Down)
CTL pedal
Expression pedal
Expression pedal switch
PATCH/VALUE dial
< Rear Panel >
OUTPUT LEVEL knob
POWER switch
Display
16 characters, 2 lines (backlit LCD)
2 characters, 7 segment LED
Connectors
INPUT jack
OUTPUT jacks L (MONO)/R
PHONES jack
SEND jack
RETURN jack
DIGITAL OUT connector (coaxial)
SUB EXP PEDAL/SUB CTL PEDAL1,2 jack
MIDI connectors IN/OUT
AC Adaptor jack
• Power Supply
AC 14 V; Supply AC adaptor (BOSS BRC series)
• Current Draw
800 mA
• Dimensions
515 (W) x 261 (D) x 75 (H) mm
20-5/16 (W) x 10-5/16 (D) x 3 (H) inches
• Weight
4.7 kg/10 lbs 6 oz (excluding AC Adaptor)
• Accessories
Owner’s Manual English (#G6017298)
AC Adaptor BRC-120V (#01786223)
AC Adaptor BRC-230V (#01786234)
AC Adaptor BRC-240V (#01786245)
EURO CONVERTER PLUG ECP01-5A (PLUG for 230V) (#00905234)
• OptionsMIDI Implementation English (#17041119)
Foot Switch: FS-5U, FS-5L
Expression Pedal: EV-5 (Roland), FV-300L + PCS-33 (Roland)
Foot Switch Cable: PCS-31 (Roland)
(1/4 inches Phone Plug (stereo) - 1/4 inches Phone Plug (mono) x 2)
* 0 dBu = 0.775 Vrms
* In the interest of product improvement, the specifications and/or appearance of this unit are subject to change without prior notice.
2
GT-6(T)
3
GT-6(T)
8. 27. 28.29.30.31.32.33.34.35.37.
39.40.41.42
38.
53.
5
Sep. 2001
LOCATION OF CONTROLS PARTS LIST
LOCATION OF CONTROLSfig.panel
No. Part Code Part Name Q’ty1 G2477122 R-KNOB 152 F3279803 POTENTIOMETER RD901-40-125F-
B54-11D (11 click)1
3 F3279804 POTENTIOMETER RD901-40-125F-B54-06D (6 click)
2
4 F3279802 POTENTIOMETER RD901-40-125F-B54-00D
12
5 G2237113 GUARD PLATE 16 G2237112 GUARD 17 G2017152 TOP COVER 18 F5029412 LED (RED) A-552SR BW 19 F5029405 LMC-SSC2K16DLNY-H01 110 G2567119 DISPLAY COVER 111 22485303 D R-KNOB L BLK 248-303 112 01905467 ROTARY ENCODER EVE GC1 F20
24B1
13 G2567118 ESCUTCEON (for PANEL) 114 G247751301 KEYTOP S WITHOUT LENS 415 G247751001 KEYTOP S BLACK WITH LENS 1916 F5029111 LED (RED/GREEN) L-3WSRSGW-
CC2
17 F5029117 LED (RED) L-312LRD 1718 1502928100 LED (RED) L-34HDSL 819 01780101 TACT SWITCH SKQKAB 2320 G2217138 PEDAL LABEL(1) 121 G2217139 PEDAL LABEL(2) 122 G2217140 PEDAL LABEL(3) 123 G2217143 PEDAL LABEL(4) 124 G2217144 PEDAL LABEL(CTL) 125 G2217142 PEDAL LABEL(DOWN) 126 G2217141 PEDAL LABEL(UP) 127 G2357112 VR PLATE 128 G2567121 RUBBER SW ESCUTCHEON 129 G2567120 RUBBER SW 130 G2187533 VR PEDAL 131 G2187904 PEDAL HOLDER 132 01016167 11M/M ROTARY POT.
RK11K1140(10K SP B)1
33 G2357111 CUSHION R 134 G2147117 PIN STAY 135 G2147119 BOLT HOLDER 236 G2357120 FOOT H=5 537 G2147116 SHAFT STAY 138 G2227301 PEDAL ESCUTCHEON 739 G2187602 SWITCH PEDAL 740 G2177103 SUPPORT SPRING 741 G2357109 PEDAL FOOT 742 13129778 TACT SWITCH SKQKAH 743 G2017150 BOTTOM COVER 144 13449155MF PHONE JACK (MONO) HTJ-064-12I 545 13449150MF PHONE JACK (STEREO) HTJ-064-
12D2
46 01340412 P R-KNOB SF-A BLK/LCG 147 01676523 9M/M ROTARY POT. RK09K12A0
10KAX21
48 01343723 RCA(PIN) JACK YKC21-3117 149 13429825 MIDI CONNECTOR YKF51-5054 150 12499175 G S-BUTTON S1H BLK 151 01676512 PUSH SWITCH SDKLA1-B 152 13449728 ADAPTOR JACK HEC0740-010010 153 22360712 CORD HOOK 236-712 1
1.2.
1.3. 1.4.
5.
6. 7. 8. 9.
10. 1.3.11.12.13.
14.19.
15.17.19.
1
18.
25. 26.
20. 21. 22. 23. 24.
36.43. 44.
45.46.47.
48. 49.
50.51.
52.
15.16.19.
4
GT-6(T)
32
q
31
p
qo
30
41
41
29
2
m
7
Sep. 2001
EXPLODED VIEW PARTS LIST
EXPLODED VIEW
fig.jack
[Parts]
No. Part Code Part Name1 G2017152 TOP COVER2 G2017150 BOTTOM COVER3 G2237112 GUARD4 G2237113 GUARD PLATE5 G2567120 RUBBER SW6 G2567121 RUBBER SW ESCUTCHEON 7 G2357120 FOOT H=58 G2567119 DISPLAY COVER9 12499175 G S-BUTTON S1H BLK10 22485303 D R-KNOB L BLK11 01340412 P R-KNOB SF-A BLK/LCG12 22360712 CORD HOOK 236-71213 G2217138 PEDAL LABEL(1)14 G2217139 PEDAL LABEL(2)15 G2217140 PEDAL LABEL(3)16 G2217143 PEDAL LABEL(4)17 G2217144 PEDAL LABEL(CTL)18 G2217141 PEDAL LABEL(UP)19 G2217142 PEDAL LABEL(DOWN)20 G247751001 KEYTOP S BLACK WITH LENS21 G247751301 KEYTOP S WITHOUT LENS22 G2147116 SHAFT STAY23 G2477122 R-KNOB24 G2567118 ESCUTCEON (ABS,for PANEL)25 G2227301 PEDAL ESCUTCHEON26 G2187602 SWITCH PEDAL27 G2177103 SUPPORT SPRING28 G2357109 PEDAL FOOT29 G2187904 PEDAL HOLDER30 G2187533 VR PEDAL31 G2357111 CUSHION R32 G2147117 PIN STAY33 G2357112 VR PLATE34 F5029405 LCD35 75D523S000 SW1 BOARD36 75D523S000 SW2 BOARD37 75D523S000 SW3 BOARD38 75D523M000 MAIN BOARD39 75D523S000 SW4 BOARD40 75D523S000 SW5 BOARD41 G2147119 BOLT HOLDER42 12569249S0 LITHIUM BATTERY CR2032
[Screws]
No. Part Code Part Namea H5029854 HEX BUTTON BOLT M3x12 FeNib ******** M9 NUT (with ENCODER)c H5039126 M9 WASHER (with ENCODER)d H5039520 M9 NUT (VR)e H5039510 NUT M9x11x2 FeNi (for Phone Jack)f H5039112 WASHER M9 (for Phone Jack)g 40342701 SCREW 2.3x8 BINDING TAPTITE P ZCh 40011278 SCREW 3x8 BINDING TAPTITE P ZCI 40011312 SCREW 3x8 BINDING TAPTITE P BZCk 40127689 SCREW M3x10 BINDING TAPTITE S BZCm H5019124 SCREW M3x6 BINDING W/PW+SW ZC
(Small Washer)n H5019130 SCREW M3x6 BINDING W/PW+SW ZC
(Normal Washer)o 40015901 E-RING M2.5 SUSp 40342690 HEX BOLT M6x85 HALF THREAD BZCq 40016067 PLAIN WASHER 6x13x1 BZCr 40016001 NUT M6 U BZCs 40019123 SCREW 3x8 BINDING TAPTITE S BZC
35
2034
g
37
21
1
17
16
15
14
13
s
2623
3
d
42728
25
a
8
24
36r
5
6
k
33
10
b
c
19
18
42
40
38
39
f
e
11i
9
s
12
k
h
n
h
c
d
22
7
m
h
h
s
6
Sep. 2001
WIRING DIAGRAMfig.wiringMAIN BOARD ASSY
SW1 BOARD ASSY
ENC BOARDASSY
SW2 BOARD ASSY
SW3 BOARDASSY
EXP BOARDASSY
SW4 BOARDASSY
CN11
CN7 CN2CN6CN3
CN8CN7
CN4
CN5
CN6
CN3
CN1
CN2
CN4
CN8
CN10
WIRING 8P WIRING 11P WIRING 7P
RIBON 3P
RIBON 7P
WIRING 10P
WIRING 3P
WIRING 2P
8
GT-6(T)
PARTS LIST
fig.part1e
fig.part2e
MB -> MAIN BOARD ASSY, SW -> SW SHEET ASSY
SAFETY PRECAUTIONS:The parts marked have safety-related characteristics. Use only listed parts for replacement.
SAFETY PRECAUTIONS:The parts marked have safety-related characteristics. Use only listed parts for replacement.
QTY PART NUMBER DESCRIPTION MODEL NUMBEREx. 10 22575241 Sharp Key C-20/50
15 2247017300 Knob (orange) DAC-15DFailure to completely fill the above items with correct number and description will result in delayed or even undelivered replacement.
NOTE: The parts marked # are new. (initial parts)
NOTE: Consider about the natural environment carefully before through the old lithium battery away when you exchange to the new one.
CASING Q'ty
# G2017150 BOTTOM COVER 1# G2357120 FOOT H=5 5
G2227301 PEDAL ESCUTCHEON 7G2357109 PEDAL FOOT 7G2187602 SWITCH PEDAL 7
# G2017152 TOP COVER 1# G2187533 VR PEDAL 1
KNOB, BUTTON
01340412 P R-KNOB SF-A BLK/LCG 112499175 G S-BUTTON S1H BLK 249-175 122485303 D R-KNOB L BLK 248-303 for ALPHA-DIAL 1G2477122 R-KNOB 15G247751001 kEYTOP S BLACK WITH LENS for SW 19G247751301 KEYTOP S WITHOUT LENS for SW 4
SWITCH
# G2567120 RUBBER SW 101676512 SDKLA1-B PUSH SWITCH SW1 on MB 101780101 SKQKAB TACT SWITCH SW9,SW10,SW11,SW12,SW13,SW14,SW15,
SW16,SW17,SW18,SW19,SW20,SW21,SW22,SW23,SW24,SW25,SW26,SW27,SW28,SW29,SW30,SW31 on SW
23
13129778 SKQKAH TACT SWITCH SW1,SW2,SW3,SW4,SW5,SW6,SW7 on SW 7
JACK, EXT TERMINAL
13449155MF HTJ-064-12I PHONE JACK (MONO) JK1,JK3,JK4,JK5,JK6 on MB 513449150MF HTJ-064-12D PHONE JACK (STEREO) JK2,JK11 on MB 201343723 YKC21-3117(ORANGE) RCA(PIN) JACK JK9 on MB 113429825 YKF51-5054 2PZ MIDI CONNECTOR JK8 on MB 113449728 HEC0740-010010 ADAPTOR JACK JK7 on MB 1
DISPLAY UNIT
# F5029405 LMC-SSC2K16DLNY-H01 LCD 1# F5029412 A-552SR BW 7SEG LED LED29 on SW 1
PCB ASSY
# 75D523M000 MAIN BOARD ASSY 1# 75D523S000 SW SHEET ASSY 1
IC
# 02676190 HD6412312VF IC (CPU) IC21 on MB 102231767 RA0A-101 (TC223C080AF-101) IC (DSP) IC20 on MB 102451434 AK4552VT IC (AD/DA) IC3,IC8 on MB 2******** LH28F400BVE-BL85 IC (FLASH MEMORY/
BLANK)IC26 on MB 1
01785178 TC9271FS IC (DIF/TRANS MITTER) IC19 on MB 102453389 LC32V4265T-25 IC (DRAM) IC24 on MB 1
# 02672378 UPD431000AGW-A10 IC (SRAM) IC22 on MB 115289109 M5216FP-600D IC (BIPOLAR OP AMP) IC5 on MB 115189261 M5218AFP-600E IC (BIPOLAR OP AMP) IC6,IC4 on MB 200346445 NJM2100M(TE3) IC (BIPOLAR OP AMP) IC7,IC2 on MB 215259769T0 TC74HC238AF(EL) IC (CMOS) IC29 on MB 115169596 TC74HC4051AP IC (CMOS) IC4,IC5 on SW 201901623 TC74LVXC3245FS IC (CMOS) IC14 on MB 1
9
Sep. 2001
01670745 TC74VHCT541AF IC (CMOS) IC18 on MB 102232834 TC7SH04F(TE85L) IC (CMOS) IC27,IC17 on MB 215249121 TC7W04F(TE12L) IC (CMOS) IC16 on MB 102340756 TC7WH32FU(TE12L) IC (CMOS) IC28 on MB 100458034 TC75S51F TE85R IC (OP AMP) IC25 on MB 115289106 M5238AFP-600C IC (JFET OP AMP) IC1 on MB 102453056 BU2090F-E2 IC (LED DRIVER) IC1 on SW 1
# 02678945 BU2090 IC (LED DRIVER) IC2,IC3,IC6 on SW 315289124 PC-400 IC (PHOTO COUPLER) IC13 on MB 102012789 BA17805FP-E2 IC (REGULATOR) IC10 on MB 1
# 02786678 S-81233SGY IC (REGULATOR) IC31 on MB 102563467 NJM2374AM-TE1 IC (SWITCHING REGULA-
TOR)IC9 on MB 1
15289123 M51953AFP-600C IC (RESET) IC15 on MB 1
IC
TRANSISTOR
# F5309115 2SA1241-Y TRANSISTOR Q12 on MB 115309104 2SA1586-GR(TE85R) TRANSISTOR Q5,Q15 on MB 2
# F5309601 2SB1132 TRANSISTOR Q14 on MB 1# F5309602 2SB1182 TRANSISTOR Q8 on MB 1
15319107 2SC4116-GR(TE85R) TRANSISTOR Q9 on MB 1# F5319601 2SD1664 TRANSISTOR Q13 on MB 1# F5319602 2SD1758 TRANSISTOR Q7 on MB 1
15329501 DTA143EKA T146 DIGITAL TRANSISTOR Q11 on MB 102340645 RN1441-A(TE85L) DIGITAL TRANSISTOR Q1,Q2,Q3,Q4,Q6 on MB 515129215 RN2207-TPE4 DIGITAL TRANSISTOR Q1,Q2,Q3,Q4 on SW 4
DIODE
15019126 1SS133 T-77 SWITCHING DIODE D1,D2,D3,D4,D5,D6,D7,D9,D10,D11,D12,D13,D14,D15,D16,D17,D18,D19,D20,D21,D22,D23,D24,D25,D26,D27,D28,D29,D30,D31on SW
30
15339119T0 1SS352(TPH3) SWITCHING DIODE D1,D6,D8,D10,D11,D16,D17 on MB 7F5019209RT 1N4004 DIODE D2,D4,D5,D12 on MB 402783023 RB500V-40 DIODE D9 on MB 1F5339137 SS14 VF=0.45V DIODE D3 on MB 1F5339310 RD10ESAB2 ZENER DIODE D13,D14 on MB 2F5029117 L-312LRD LED (RED) LED9,LED10,LED11,LED12,LED13,LED14,
LED15,LED16,LED17,LED18,LED19,LED20,LED21,LED22,LED23,LED24,LED25 on SW
17
1502928100 L-34HDSL LED (RED) LED1,LED2,LED3,LED4,LED5,LED6,LED7,LED8 on SW
8
F5029111 L-3WSRSGW-CC LED (RED/GREEN) LED27,LED28 on SW 215339120T0 1SS302(TE85R) DIODE ARRAY DA3,DA4 on MB 2
RESISTOR
F3829254 47 OHM(2W) CARBON RESISTOR R11,R14 on MB 213749775T0 SR25TRE 121 J CARBON RESISTOR R23,R21 on SW 213749789T0 SR25TRE 471 J CARBON RESISTOR R31,R32,R33,R34,R35,R36,R37,R38,R39,R40,
R41,R42,R43,R44 on SW14
00566867 RPC05T 100 J MTL.FILM RESISTOR R9,R54,R109 on MB 300567023 RPC05T 101 J MTL.FILM RESISTOR R69,R108 on MB 200567156 RPC05T 102 J MTL.FILM RESISTOR R21,R22,R32,R33,R55,R56,R100,R104,R107,
R113 on MB10
00567289 RPC05T 103 J MTL.FILM RESISTOR R2,R6,R12,R13,R16,R19,R24,R27,R30,R35,R37,R38,R41,R45,R47,R48,R52,R61,R72,R76,R80,R82,R102,R105,R119,R120,R130,R132,R133,R134,R137 on MB
31
00567412 RPC05T 104 J MTL.FILM RESISTOR R23,R34,R58,R59,R116 on MB 500567556 RPC05T 105 J MTL.FILM RESISTOR R39,R7 on MB 200567034 RPC05T 121 J MTL.FILM RESISTOR R67 on MB 100567167 RPC05T 122 J MTL.FILM RESISTOR R40,R1 on MB 200567178 RPC05T 152 J MTL.FILM RESISTOR R65,R142 on MB 200567189 RPC05T 182 J MTL.FILM RESISTOR R66 on MB 100567312 RPC05T 183 J MTL.FILM RESISTOR R42,R3 on MB 200566912 RPC05T 220 J MTL.FILM RESISTOR R77 on MB 100567190 RPC05T 222 J MTL.FILM RESISTOR R112,R68 on MB 200567456 RPC05T 224 J MTL.FILM RESISTOR R46 on MB 100567089 RPC05T 331 J MTL.FILM RESISTOR R25,R36,R74 on MB 300567345 RPC05T 333 J MTL.FILM RESISTOR R51,R57 on MB 200567112 RPC05T 471 J MTL.FILM RESISTOR R70 on MB 100567245 RPC05T 472 J MTL.FILM RESISTOR R85,R91,R94,R103,R106,R110,R111,R114,R1
15 on MB9
00567378 RPC05T 473 J MTL.FILM RESISTOR R17,R20,R28,R31,R49,R60,R122,R123,R124 on MB
9
00567501 RPC05T 474 J MTL.FILM RESISTOR R84 on MB 100567001 RPC05T 750 J MTL.FILM RESISTOR R71 on MB 100567401 RPC05T 823 J MTL.FILM RESISTOR R26,R15 on MB 215399349 RPC10T 100 J 1/10W MTL.FILM RESISTOR R139,R140,R141 on MB 301905012 RR0816P-123-D MTL.FILM RESISTOR R4,R8,R43,R50 on MB 4
10
GT-6(T)
01909734 RR0816P-682-D MTL.FILM RESISTOR R10,R53 on MB 202122623 RR0816R-104-D MTL.FILM RESISTOR R5,R44 on MB 2
# F5399911 0.68 (1/2W) RESISTOR R62 on MB 1# F5399912 1.8K (F-RANK) RESISTOR R64 on MB 1# F5399919 1M(F-RANK) RESISTOR R81 on MB 1# F5399917 22 (1/2W) RESISTOR R75 on MB 1# F5399913 3K (F-RANK) RESISTOR R63 on MB 1# F5399920 4.7M(F-RANK) RESISTOR R121 on MB 1# 13749787T0 SR25TRE 391J 1/6W RESISTOR R1,R2,R3,R4,R5,R6,R7,R8,R9,R10,R11,R12,R
13,R14,R15,R16,R17,R18,R19,R20,R22,R24,R25,R26,R27,R28,R29 on SW
27
F5419707 CRN34101J RESISTOR ARRAY RA1,RA2,RA4,RA6,RA12,RA15 on MB 6F5419705 CRN34103J RESISTOR ARRAY RA11,RA14,RA18,RA19,RA28 on MB 5F5419706 CRN34104J RESISTOR ARRAY RA5,RA3 on MB 2
RESISTOR
POTENTIOMETER
F3279802 RD901-40-125F-B54-00D 50KB 9M/M ROTARY POT. W/CLICK
VR2,VR4,VR6,VR7,VR8,VR9,VR10,VR11,VR12,VR13,VR15,VR16 on SW
12
F3279804 RD901-40-125F-B54-06D 50KB 9M/M ROTARY POT. 6 CLICKS
VR3,VR14 on SW 2
F3279803 RD901-40-125F-B54-11D 50KB 9M/M ROTARY POT. 11 CLICKS
VR5 on SW 1
01676523 RK09K12A0 10KAx2 9M/M ROTARY POT. VR1 on MB 101016167 RK11K1140(10K SP B) 10Kx1 11M/M ROTARY POT. VR1 on SW 1
CAPACITOR
01674167 ECJ1VC1H100D CERAMIC CAPACITOR C3,C6,C16,C25,C38,C41,C42,C145,C146,C154 on MB
10
01674701 ECJ1VF1E104Z 0.1UF/16VK CERAMIC CAPACITOR C7,C9,C12,C14,C44,C48,C50,C53,C58,C59,C77,C78,C79,C80,C83,C84,C86,C87,C88,C89,C91,C92,C93,C95,C96,C98,C99,C100,C101,C102,C103,C105,C106,C107,C108,C109,C110,C111,C112,C114,C115,C118,C120,C123,C124,C125,C128,C131,C132,C134,C135,C136,C138,C139,C140,C141,C142,C147,C148,C149,C159,C160,C162,C163 on MB
64
01674356 ECUV1H151JCV CERAMIC CAPACITOR C23,C33,C62 on MB 300567823 GRM39B102K50PT CERAMIC CAPACITOR C15,C24,C43,C54,C127 on MB 500567945 GRM39B103K50PT CERAMIC CAPACITOR C1,C36,C129,C130 on MB 401672412 GRM39CH150J50PT CERAMIC CAPACITOR C121,C119 on MB 213639550S0 16MV100HW+T 100UF/16V CHEMICAL CAPACITOR C21,C31,C66,C68,C69,C72,C157 on MB 713639546S0 16MV10HW+T CHEMICAL CAPACITOR C4,C8,C10,C11,C17,C18,C19,C20,C26,C27,C
28,C29,C30,C34,C39,C40,C46,C47,C49,C51,C52,C94,C97,C104,C113,C116,C122,C126,C133,C143,C150,C151,C152,C153 on MB
34
13639549S0 16MV47HW+T CHEMICAL CAPACITOR C13,C45,C76,C81 on MB 4# 13639582S0 35MV100HW+T CHEMICAL CAPACITOR C64,C67,C70,C74 on MB 4
13639195S0 35MV2200HW(SME35VB2200) CHEMICAL CAPACITOR C56 on MB 1# 13639598 35MV220HW+T CHEMICAL CAPACITOR C144 on MB 1
13639599S0 35MV470HW+T CHEMICAL CAPACITOR C65,C71 on MB 2# 13609111 50MVR33HW+T CHEMICAL CAPACITOR C90 on MB 1
13639113S0 6MV470HW CHEMICAL CAPACITOR C61,C35 on MB 213519694 RPE132-901F104Z50 MLT.LAY.CERAMIC CAPACI-
TORC1,C2,C3,C4,C5 on SW 5
13549279M0 ECQ-M1H104JF3 POLYEST. CAPACITOR C5 on MB 101128045 ERZVA7V330 VARISTOR CAPACITOR C55 on MB 1
INDUCTOR, COIL, FILTER
13529246 DSS310-91D223S-50ATL12-134 EMI FILTER FL1,FL2 on MB 212449386 SBT-0180W EMI FILTER L15 on MB 1
# F2449220 TSL1112SRA-471KR72 INDUCTOR L11 on MB 1
CRYSTAL, RESONATOR
# 02672401 SG-8002JC 67.7376MHZ PC CRYSTAL X1 on MB 100894023 MA-406 20.000MHZ TE24 CRYSTAL X2 on MB 1
ENCODER
01905467 EVE GC1 F20 24B ROTARY ENCODER EN1 on SW 1
CONNECTOR
# F3439160 53015-0210 CONNECTOR CN8 on MB 1F3439166 A2001WR2-11P CONNECTOR CN3 on MB 1
# F3439179 A2001WR2-7P CONNECTOR CN6 on MB 1F3439164 A2001WR2-8P CONNECTOR CN7 on MB 1F3439165 A2001WV2-10P P=2MM CONNECTOR CN2 on MB 1
# F3439178 A2541WV2-2A16NP CONNECTOR 1
11
Sep. 2001
F3439121 A2541WR2-2A16NP CONNECTOR 16P CN1 on MB 1F3439123 A2001WR2-3P CONNECTOR 3P CN4 on MB 1
CONNECTOR
WIRING, CABLE
# G3467180 16P L=160MM LCD WIRING 1G3477146 3P L=40X5X5 MM P=2MM RIBBON CABLE CN5,CN6 on SW 1
# G3477156 7P P=2MM L=140MM RIBBON CABLE CN1,CN3 on SW 1# G3467179 10P P=2MM L=120MM WIRING CN2 on SW 1# G3467177 11P P=2MM L=65MM WIRING CN7 on SW 1# G3467174 2P P=2MM L=150MM WIRING CN10 on SW 1# G3467175 3P P=2MM L=115MM WIRING CN4 on SW 1# G3467176 7P P=2MM L=115MM WIRING CN8 on SW 1# G3467178 8P P=2MM L=65MM WIRING CN11 on SW 1
TRANSFORMER
02563501 PT-10 (2280-T008) PULSE TRANS TR1 on MB 1
SCREWS
40342701 SCREW M2.3x8 BINDING TAP TIGHT P ZC 1# H5019130 SCREW M3x6 PAN MACHINE W/SW+PW
ZC5
H5019124 SCREW M3x6 PAN MACHINE W/SW+SMALL PW ZC
10
40011312 SCREW 3x8 BINDING TAPTITE P BZC 340011278 SCREW 3x8 BINDING TAPTITE P FE ZC 2040019123 SCREW 3x8 BINDING TAPTITE S BZC 1840127689 SCREW M3x10 BINDING TAPTIGHT S TYPE
FE BZC3
# H5029854 BOLT M3x12 HEX BUTTON FENI 640342690 HEX BOLT M6x85 HALF THREAD BZC 140016001 LOCK NUT M6 U BZC 1
# ******** M9 NUT (for ENCODER) 1# H5039520 M9 NUT (for VR) 15# H5039510 NUT M9x12x2 FENI (for Phone Jack) 7
40015901 E-RING M2.5 SUS 1# H5039126 M9 WASHER (for ENCODER) 1# H5039112 M9 WASHER (for Phone Jack) 7
40016067 PLAIN WASHER 6x13x1 BZC 2
PACKING
# G2607214 PACKING CASE 1# G2237620 PAD L 1# G2237616 PAD R 1# G2617273 OUTER PACKING CASE 1
MISCELLANEOUS
G2147118 AC JACK HOLDER on MB 1G2147119 BOLT HOLDER 2
# G2607215 COLOR SLEEVE 122360712 CORD HOOK 236-712 1G2357111 CUSHION R 1
# G2567119 DISPLAY COVER 1# G2567118 ESCUTCHEON (ABS,for PANEL) 1# G2237112 GUARD 1# G2237113 GUARD PLATE 1
40016523 INSULOK TIE 100M/M T-18R <<1000 PCS ORDERING PER>>
2
G2257203 JACK COVER on MB 1# H2369431 LED SPACER 3-2 for SW 1
12569249S0 LITHIUM BATTERY CR2032 220MAH/3V BT1 for MB 112189815 LITHIUM BATTERY HOLDER BH-32 BT1 on MB 1
# G2187904 PEDAL HOLDER 1# G2217138 PEDAL LABEL(1) 1# G2217139 PEDAL LABEL(2) 1# G2217140 PEDAL LABEL(3) 1# G2217143 PEDAL LABEL(4) 1# G2217144 PEDAL LABEL(CTL) 1# G2217142 PEDAL LABEL(DOWN) 1# G2217141 PEDAL LABEL(UP) 1
G2147117 PIN STAY 1# G2567121 RUBBER SW ESCUTCHEON 1
G2147116 SHAFT STAY 1H2369401 SPACER 3X6X10 for SW 7G2177103 SUPPORT SPRING 7G2357112 VR PLATE 1
12
GT-6(T)
ACCESSORIES (STANDARD)
# G6017297 OWNER’S MANUAL JAPANESE 1# G6017298 OWNER’S MANUAL ENGLISH 1
01786212 AC ADAPTOR BRC-100T 101786223 AC ADAPTOR BRC-120T 101786234 AC ADAPTOR BRC-230T 101786245 AC ADAPTOR BRC-240AT 100905234 EURO CONVERTER PLUG ECP01-5A (PLUG for 230V) 1
# H5279511 READ ME FIRST JAPANESE/ENGLISH 140232389 WARRANTY CARD (JAPAN ONLY) 1
13
Sep. 2001
IDENTIFYING THE VERSION
NUMBER
1.
Turn the power off.
2.
While pressing [NAME/NS/MASTER],[UTILITY] and [MANUAL] button, turn on power.
3.
The version number is displayed.
fig.LCD1
TRANSMITTING / RECEIVING
DATA VIA MIDI
The GT-6 can use exclusive messages to set another GT-6 to the same settings, or to transmit its settings to a device such as a sequencer for storage.
The process of transmitting such data is called bulk dump, and the process of receiving such data is called bulk load.
BULK DUMP
1.
Press [UTILITY] button, then press PARAMETER [<] [>] button so that “Bulk Dump” is displayed.
fig.Dump-1
2.
Press PARAMETER [<] [>] button to move the cursor, and rotate the [PATCH/VALUE] dial to select the start and end of the data to be transmitted.
3.
When the data to be sent has been determined, press [WRITE] button.
The data is transmitted.
fig.Dump-2
When the transmission is completed, the screen prior to transmission returns to the display.
4.
Press [EXIT] button to return to the Play screen.
BULK LOAD
1.
Press [UTILITY] button, then press PARAMETER [<] [>] button so that “Bulk Load” is displayed.
fig.Load-1
2.
Transmit the data from the external MIDI device.
The following appears in the display when the GT-6 receives the data.
fig.Load-2
The following appears in the display when the GT-6 finishes receiving the data.
fig.Load-3
At this stage, even more data can be received.
3.
Press [EXIT] button to quit Bulk Load.
After you press [EXIT] button, “Checking...” appears in the display, indicating that the GT-6 is checking the received data.
When the check is completed, the Play screen returns to the display.
TEST MODE
* Note: When user data is present, always back it up on the sequencer (MC-80, etc.) before repair.
(Refer to “Saving data” and “Loading data” for the user data storage procedures).
Individual inspection items
1.DSP Check
2.Display
3.LCD Contrast
4.Switch
5.VR Check
6.EXP PEDAL
7.Battery
8.MIDI IN/OUT
9.OUTPUT D/A
10.EXT OD/DS
11.INPUT A/D
12.DSP INTO
13.Noise (IN -> OUT)
14.Noise (EXT)
15.Calibrete EXP
16.Factory Load
Required items
• Expression Pedal (Roland EV-5)
• MIDI Cable
• Noise Meter
• Oscilloscope
• Oscillator
• Equipment with digital input
• Empty plug
How to enter test mode:
•
Starting from “1.DSP Check”.
Turn on the unit while pressing the [DELAY] and [DELAY TAP] buttons simultaneously.
The ROM version and the checksum will be displayed first.
Proceed to “1.DSP Check” by pressing the [EXIT] button.
fig.LCD1
•
Starting from “9.OUTPUT D/A”.
Turn on the unit while pressing the [CHORUS] and [REVERB] buttons simultaneously.
“1.DSP Check” result is displayed first, then it proceeds to “9.OUTPUT D/A”.
14
GT-6(T)
1.
DSP Check
fig.LCD2
DSP (IC20) and DRAM (IC24) are automatically checked and their results displayed.
If an error occurs, its contents will be displayed, and if no problems exist, “OK” is displayed.
After the inspection completes, it will automatically proceed to the next inspection.
2.
Display
fig.LCD3
All of the LCD and LED segments will be on.
Press the [EXIT] button to proceed to the next inspection.
3.
LCD Contrast
fig.LCD4
Turn the [VALUE] encoder knob in the following order and confirm that the LCD contrast changes.
1) Turning the knob anti-clockwise dims the contrast.
fig.LCD5
2) Turning the knob clockwise brightens the contrast.
fig.LCD4
Change the LCD contrast from ‘15 -> 0 -> 15’, and it will automatically proceed to the next inspection.
4.
Switch
fig.LCD6
The button names to be inspected are displayed on the lower part of the LCD.
Press the displayed button switches.
“Wrong switch!” is displayed when a wrong button is pressed.
Also, for buttons with LEDs confirm that:
1) All the LEDs that are on are red prior to pressing them.
2) The LEDs go out after the buttons are pressed.
However, for [PREAMP/SPEAKER TYPE VARIATION] and [OD/DS TYPE VARIATION], the color changes from red to green.
Confirm the following two points.
Press the switches in the following order.
[1] Effect select button/Edit button group inspection Press according to the LCD display.
[PREAMP/SPEAKER] -> [PREAMP/SPEAKER TYPE VARIATION]->[OD/DS] -> [OD/DS TYPE VARIATION] -> [DELAY] -> [DELAY TAP] ->[CHORUS] -> [REVERB] -> [FX-2] -> [FX-1] -> [EQ] -> [WAH] -> [PARAMETER (<)] -> [EXIT] -> [PEDAL ASSIGN] -> [NAME/NS/MASTER] -> [UTILITY] -> [OUTPUT SELECT] -> [WRITE] -> [PARAMETER (<)] -> [EZ TONE] -> [TUNER/BYPASS] -> [MANUAL]
[2] The pedal switch group and expression switch inspection
[BANK DOWN] -> [BANK UP] -> [EXP PEDAL SW] -> [CTL PEDAL] -> [PEDAL 4] -> [PEDAL 3] -> [PEDAL 2] -> [PEDAL 1]
[3] 7 seg LED
Confirm that the 7 seg LED segments go out one by one each time [WAH] is pressed.
Pressing the [WAH] switch 14 times turns all the segments off .
After the [3] 7seg LED inspection completes, it will automatically proceed to the next inspection.
5.
VR Check
fig.LCD7
Turn all the VRs anti-clockwise all the way (set to MIN position).
The names of the VRs to be inspected are displayed on the lower part of the LCD.
Turn the displayed VR.
[PATCH LEVEL]->[SPEAKER]->[PRE LEVEL]->[PRE TREBLE]->[PRE MIDDLE]->[PRE BASS]->[PRE GAIN]->[PRE TYPE]->[OD/DS TYPE]->[OD/DS DRIVE]->[OD/DS LEVEL]->[DELAY FEEDBACK]->[DELAY LEVEL]->[CHORUS]->[REVERB]
1) Without click - the 7 seg LED segments come on from the bottom according to the positions of the VR knobs, except for the “SPEAKER”, “PREAMP/SPEAKER TYPE” and “OVERDRIVE/DISTORTION TYPE” VRs.
To proceed to the next VR inspection, turn the knob all the way to the right ( [MIN] -> [MAX] ).
2) With click - the numbers are displayed for the 7 seg LED segments according to the clicked position, except for the “SPEAKER”, “PREAMP/SPEAKER TYPE” and “OVERDRIVE/DISTORTION TYPE” VRs.
“SPEAKER” : [1x10] -> [ORIGINAL]
“PREAMP/SPEAKER TYPE” : [JC CLEAN] -> [CUSTOM]
“OVERDRIVE/DISTORTION TYPE” : [OD/BOOST] -> [CUSTOM/EXTERNAL]
To proceed to the next VR inspection, turn the knob all the way to the right ( [MIN] -> [MAX] ).
After the [REVERB LEVEL] VR inspection completes, it will automatically proceed to the next inspection.
6.
EXP PEDAL
fig.LCD8
Confirm the changes on the EXP pedal of this unit and the EXP pedal (SUB EXP PEDAL) connected to the [SUB EXP PEDAL/SUB CTL 1,2] jack.
Connect the EV-5 to the [SUB EXP PEDAL/SUB CTL 1,2] jack.
The EXP pedal of this unit is inspected first, then the SUB EXP PEDAL.
1) Bringing the pedal’s tilt to the center (middle value) will display “***” in the center display.
fig.LCD9
or
15
Sep. 2001
fig.LCD13
2) Pressing further (maximum value) displays “***” on the right display.
fig.LCD10
or
fig.LCD14
3) Finally, returning the pedal forward (minimum value) displays “***” on the left display, and the inspection for that pedal is complete.
fig.LCD11
or
fig.LCD15
After the EXP PEDAL inspection completes, it will automatically proceed to the next inspection.
7.
Battery
fig.LCD16
The voltage of the memory backup battery is displayed.
To proceed to the next inspection, press the [EXIT] button.
8.
MIDI IN/OUT
fig.LCD18
Connect the MIDI IN connector and the MIDI OUT connector with a MIDI cable.
“No Connect” is displayed if the connectors are not connected with a MIDI cable.
If the connectors are properly connected, “Verify OK !” is displayed.
After the MIDI IN/OUT inspection completes, it will automatically proceed to the next inspection.
fig.LCD17
9.
OUTPUT D/A
Note : Check both L(MONO) and R.
Also, when the OUTPUT jack is used for a single channel, the L and R signals will be internally mixed, therefore, empty plugs must be inserted in the R channel for L(MONO) channel measurement and in the L(MONO) channel for R channel measurement, respectively.
fig.LCD19
Confirm these three points.
A) Using an oscilloscope, observe that a short wave is obtained from OUTPUT .
B) Since output mute is automatically made ‘On/Off’, make sure that it is on.
C) Confirm that the level changes when the OUTPUT knob is turned.
fig.LCD20
Oscilloscope : 1.0 V/DIV, 0.5 ms/DIV
Mute = Off Mute = On
fig.1
fig.2
D) Confirm that a same waveform as that from OUTPUT is obtained from Phones.
E) Confirm that a short wave is obtained from Send and that mute is effective.
Oscilloscope : 1.0 V/DIV, 0.5 ms/DIV
Mute = Off Mute = On
16
GT-6(T)
fig.3
fig.4
To proceed to the next inspection, press the buttons in [EXIT] -> [PARAMETER (>)] sequence.
10.
EXT OD/DS
fig.LCD21
Confirm the following two points.
A) Using an oscilloscope, observe that a short wave is obtained from OUTPUT.
fig.10ext-1e
B) Insert an open plug in the RETURN jack and confirm that there is no output.
fig.10ext-2e
Note: Check both L(MONO) and R.
Also, when the OUTPUT jack is used for a single channel, the L and R signals will be internally mixed, therefore, empty plugs must be inserted in the R channel for L(MONO) channel measurement and in the L(MONO) channel for R channel measurement, respectively.
OUTPUT Level Control : MAX
Oscilloscope : 1.0 V/DIV, 0.5 ms/DIV
Insert an empty plug in RETURN
fig.4
fig.2
To proeed to the next inspection, press the [EXIT] button.
DSP D/A SEND (Signal source)
DSP A/D RETURN D/A OUTPUT (Rectangular waveform)
DSP D/A SEND (Signal source)
DSP A/D RETURN D/A OUTPUT (Rectangular waveform)
(Cut off)
17
Sep. 2001
11.
INPUT A/D
fig.LCD22
Input a short wave, and observe the output waveform using an oscilloscope.
Note: Check both L(MONO) and R.
Also, when the OUTPUT jack is used for a single channel, the L and R signals will be internally mixed, therefore, empty plugs must be inserted in the R channel for L(MONO) channel measurement and in the L(MONO) channel for R channel measurement, respectively.
INPUT : Rectangular Waveform, 400 Hz, 40 mVp-p
OUTPUT Level Control : MAX
Oscilloscope : 1.0 V/DIV, 0.5 ms/DIV
fig.5
To proceed to the next inspection, press the [EXIT] button.
12.
DSP Pitch interruption signal
fig.LCD23
Confirm the pitch interruption signal generated from the DSP’s internal oscillation.
If an error occurs, its contents will be displayed.
If no error occurs, it will automatically proceed to the next inspection.
13.
Noise (IN -> OUT)
fig.LCD24
Note: Check both L(MONO) and R.
Also, when the OUTPUT jack is used for a single channel, the L and R signals will be internally mixed, therefore, empty plugs must be inserted in the R channel for L(MONO) channel measurement and in the L(MONO) channel for R channel measurement, respectively.
OUTPUT Level Control: MAX
Confirm that the residual noise is -74 dBm (JIS-A) or lower.
fig.13noise-e
To proceed to the next inspection, press the [EXIT] button.
14.
Noise (EXT)
fig.LCD25
Note: Check both L(MONO) and R.
Also, when the OUTPUT jack is used for a single channel, the L and R signals will be internally mixed, therefore an empty plug must be inserted in the R channel for L(MONO) channel measurement, and an empty plug must be inserted in the L(MONO) channel for R channel measurement.
OUTPUT Level Control: MAX
Confirm that the residual noise is -64 dBm (JIS-A) or lower.
fig.14noise-e
To proceed to the next inspection, press the [EXIT] button.
DSP A/D INPUT
D/A OUTPUT (Connect noise meter)
�
DSP A/D INPUT
D/A SEND
DSP A/D RETURN D/A OUTPUT (Connect noise meter)
18
GT-6(T)
15.
Calibrate EXP
fig.LCD26
1) The maximum and minimum values of the EXP pedal are set up.
fig.LCD27
fig.arrow
fig.LCD26
2) To set up the minimum value, press the [WRITE] button.
fig.LCD28
fig.arrow
fig.LCD26
3) Fully press the EXP pedal and release your hands.
4) To set up the maximum value, press the [WRITE] button.
When the calibration setup is completed, will automatically proceed to the next inspection.
16.
Factory load
fig.LCD29
To overwrite the factory preset data, press the [WRITE] button three times.
fig.LCD30
This ends test mode.
When the following displayed appears, turn off the power.
17.
DIGITAL OUT
After the test mode is completed, connect external equipment that has a DIGITAL IN terminal to DIGITAL OUT, and confirm that the sound is properly output from DIGITAL OUT of the GT-6.
RESTORING THE FACTORY SETTINGS (FACTORY RESET)1. Turn off the power.
2. While holding down PREAMP/SPEAKER On/Off button and [TYPE VARIATION], turn on the power.
The Factory Reset range setting screen appears in the display.fig.FR-1e
* To cancel Factory Reset, press [EXIT] button.
3. Press PARAMETER [<] [>] button to move the cursor, and rotate the PATCH/VALUE dial to specify the range of settings you want to restore to factory settings.
System:
System parameters, Harmonist scales, Auto Riff phrases, and Preamp, Overdrive/Distortion, and Wah Custom Edit parameter settings
#1-1-#35-4:
Settings for Patch Number 1-1 through 35-4
4. If you want to proceed with the factory reset, press [ENTER] button.
The specified range of data will be returned, and return to the Play screen.
HOW TO UPDATE SYSTEM SOFTWARE
Required items• Sequencer (MC-80, etc.)
• MIDI cable
• Update Disk (#17041087)
* Notes
Do not turn the GT-6 unit’s power off while writing the system software.
The GT-6 will not operate because the system will not be properly written into the flash ROM.
* Notes
After updating, execute “TEST:15.Calibrate EXP” and “TEST:16.Factory Load” while in the test mode.
The System Update Via SMFThe GT-6 system is supplied in standard MIDI file (SMF) format.
The following SMF data is stored on the disk. Starting with GT6_01.mid, transfer all data to the GT-6 in the respective order.
GT-6 System Ver.*.** SMF Disk : GT6_01.mid, GT6_02.mid, GT6_03.mid, GT6_04.mid, GT6_05.mid, GT6_06.mid, GT6_07.mid, GT6_08.mid
Update the GT-6’s system in the following order.1. Using a MIDI cable, connect the MIDI OUT connector of the sequencer to
the MIDI IN connector of the GT-6.
2. Turn the GT-6’s power on while pressing the [FX-2] and [PEDAL ASSIGN] and [UTILITY] buttons simultaneously.
The unit is in reception standby status if the LCD displays “Flash Update ALL BLOCK” then displays “Waiting SMF Data [GT6_01.mid]”.
The area of data you wish to factory reset.
19
Sep. 2001
3. The GT6_01.mid SMF data will be sent from the sequencer to the GT-6.
When the GT-6 receives the MIDI signal, the write address and the checksum will be displayed on the LCD.
When all the GT6_01.mid SMF data has been received, the GT-6 writes the received data to the flash ROM.
When it finishes writing, the GT-6 displays “Waiting SMF Data [GT6_02.mid]” on the LCD display.
Next, the GT6_02.mid SMF data is sent from the sequencer.
When the sequencer receives the MIDI signal, the write address and the checksum will be displayed on the LCD.
Play the SMF data in the manner stated above one by one in the respective sequence up to GT6_08.mid.
3-1.GT-6 : “Waiting SMF Data [GT6_01.mid]” -> MC-80 : GT6_01.mid play
3-2.GT-6 : “Waiting SMF Data [GT6_02.mid]” -> MC-80 : GT6_02.mid play
3-3.GT-6 : “Waiting SMF Data [GT6_03.mid]” -> MC-80 : GT6_03.mid play
3-4.GT-6 : “Waiting SMF Data [GT6_04.mid]” -> MC-80 : GT6_04.mid play
3-5.GT-6 : “Waiting SMF Data [GT6_05.mid]” -> MC-80 : GT6_05.mid play
3-6.GT-6 : “Waiting SMF Data [GT6_06.mid]” -> MC-80 : GT6_06.mid play
3-7.GT-6 : “Waiting SMF Data [GT6_07.mid]” -> MC-80 : GT6_07.mid play
3-8.GT-6 : “Waiting SMF Data [GT6_08.mid]” -> MC-80 : GT6_08.mid play
4. After the GT-6 receives all the SMF data, it will display the checksum (4-digit number) of the system software on the LCD display, so confirm it.
5. Execute “TEST:15.Calibrate EXP” and “TEST:16.Factory Load” while in the test mode.
Updating is now completed.
20
GT-6(T)
BLOCK DIAGRAMfig.block
CN7
IC3CODECAK4552
IC20 DSP
IC24DRAM 4M
IC22SRAM 1M
IC26 Flash 4M
LCD UNIT
SW 2 BOARD ASSYPEDAL SW,LED
IC8CODECAK4552
OUTPUT L
OUTPUT R
RETURN
SEND
PHONES
MIDI OUT IN
OUTPUTVOLUME
IC21 CPUH8S/2318
SUB EXP PEDALSUB CTL 1,2
INPUT
JK5
JK6 IC6b
IC6a IC7a
IC7b
IC4bIC5b
IC5a IC4aVR1a
VR1b
IC2a
IC2bIC1b
JK4
JK3
JK2
JK1
JK11
EXT OD/DS
EXT OD/DS
JK8
CN2
CN1
CN2
SW 1 BOARD ASSYPANEL SW,LED
CN11
EXP BOARD ASSYPEDAL VR
CN4CN4
MAIN BOARD ASSYDIGITAL OUT
SW4 BOARD ASSYCARBON SW
CN10CN8 ENC BOARDENCODER
SW 3 BOARD ASSYPEDAL SW,LED
TR1R71 IC17IC19TC9271FS
CN5
CN6
CN11
CN3
CN6 CN8
CN3 CN7
21
GT-6(T)
View from components side
23
Sep. 2001
CIRCUIT BOARD (MAIN)
fig.wiring
22
GT-6(T)
View from foil side
25
Sep. 2001
CIRCUIT BOARD (MAIN)
fig.sk949-c
24
GT-6(T)
DIGITAL OUT
AIN BOARD ASSY (Digital)
ED3
ED0
ED0
ED4ED3
ED6
ED1
ED6
ED7
ED2
ED7
ED5
ED2ED1
ED4ED5
RESET
MUTE
D
+D 3. 3
D
DD
D
D
D
+D 3. 3
D
+D 3. 3
D
D
+D 3. 3
+D 3. 3
D
+D 3. 3
D
D
+D 3. 3
D
+D 3. 3
D
C97 10/16
R7175
R78
N.I.U
C92 0.1
C99 0.1
R74330
C1240.1
C106 0.1
IC19TC9271FS
BLOCK 1
UBDA2
LRS 3
LRCK4
NC5
BCK6
DATA7
VLDY8
EMPH 9
COPY10
FS1 11FS2 12
CKS13
XI14
VS
S15
DO1 16DO2 17
M1 18M2 19
IS1 20IS2 21
CTG122 CTG223 CTG324
FR3225
NC26
LBIT27 CKA1 28CKA2 29
VD
D30
C9410/16
RA11CRN34103J
1 82 73 64 5
C107 0.1
C110 0.1
C100 0.1
A JK9BYKC21-3117
10
IC24
LC32V4265T-25-TLM
VCC 1
I/O1 2I/O2 3I/O3 4I/O4 5
VCC 6
I/O5 7I/O6 8I/O7 9I/O8 10
NC13
NC14
WE15
RAS16
NC17
A018 A119 A220 A321
VCC 22
VSS 23
A424 A525 A626 A727 A828
OE29
UCAS30
LCAS31
NC32
I/O9 35I/O10 36I/O11 37I/O12 38
VSS 39
I/O13 40I/O14 41I/O15 42I/O16 43
VSS 44
C103 0.1
C81 47/16
C95 0.1
C98 0.1
C85N.I.U.
TR1PT-10 (13:4)
123 4
6
1020
C93 0.1
Q92SC4116GR
1
23
C1250.1
R70
470
JK9AYKC21-3117
2
1
R79
N.I.U
C109 0.1
C83 0.1
C101 0.1
RA14CRN34103J
1 82 73 64 5
C105 0.1
C96 0.1
C102 0.1
C840.1
C108 0.1
R72
10K
C1230.1
IC17TC7SH04F
24
53
C860.1
L15SBT-0180W
4
1
3
2
234578910
121314
1617
18
1920212324252728
32333435
36
383940414243
44
454647484950
51
5253
54
55
565758
59
60616263
64 72
73
80 85
90 93
98
101
108
109
110111112113114115
116
117
120
124
128
136
140
142143
144
LRCK
MCKRES
DIF_DATA
BCK
27
Sep. 2001
CIRCUIT DIAGRAM (MAIN 1/2)
fig.sk961-c
4M Flash
ENCODER
PANEL VR A/D
EXP/CTL 1, 2
SW DATA
LCD IF (3.3V <=> 5V) TO LCD
SW SCAN
TO CN2
on SW2 BOARD
TO CN7
on SW1 BOARD
TO CN8
on SW1 BOARD
LED DATA
RESET
TO CN11
on SW1 BOARD
SW_SCNA3
SW_SCNA3
SW_DATA7
SW_DATA7
ContrastContrastResister SelectResister SelectRead/WriteRead/WriteEnable signalEnable signalData Bit 0Data Bit 0Data Bit 1Data Bit 1Data Bit 2Data Bit 2Data Bit 3Data Bit 3Data Bit 4Data Bit 4Data Bit 5Data Bit 5Data Bit 6Data Bit 6Data Bit 7Data Bit 7
DIR "H" : A -> BDIR "L" : A <- B
M
TO CN10
on SW4 BOARD
MIDI
TO CN4
on EXP BOARD
A12
A0
A16
A5
A8
A1
A3
A8
A8
LCD6
A0
D11
D9
D14
A15
A3
LCD6
D8
A1
AD1
A11
A4
A9
A2
A2
A4
D8
D14
A13
LCD5
A6
A13
A12
D13
A9
A14
A6
A7
A10
A3
D12
A14
A10
D12
A6
A3
D9
LCD7
A4
A0
A16
D15
A11
A14
D9
D13
A1
D13
SW_DATA5
A4
CS0
D12
A9
A3
D12
D11
LCD4
D11
A2
D12
A10
LCD1LCD2LCD3
D8
D8A8
A15
D15
D11
D11
XB
D9
D13
A5
D14
D14
LCD3
A12
D14
D13
MIDI IN
A2
A13
A0
A11
A14
A1
D10
A13
A5
D15
A16
XA
A13
A4
LCD2
A7
A15
A12
A11
D10
D15
A2
D15
A7A6
D10
A8
A0
D10
A9
A6
A9
D8
LCD5
LCD0
A1
A15
A11
A12
LCD0
A16
LCD7
RD
A10
A7
D9
A7
A5
LCD4
LCD1
A5
D10
A10
LED_DATA1LED_DATA2
SW_SCAN0SW_SCAN1SW_SCAN2SW_SCAN3
LED_CLOCK
LED_CLOCK
LED_DATA3
SW_DATA0SW_DATA1
SW_DATA6SW_DATA7
LED_DATA4
AD0
SW_DATA2
SW_DATA4SW_DATA3
SW_SCAN1SW_SCAN2SW_SCAN3
SW_SCAN0
LCD7LCD6LCD5LCD4LCD3LCD2LCD1LCD0
CS4
A16A15A14
A18
A17
A18
A19
A19
A17
A19
A17
A19
A19A18
A17
A18
LCD_DIR
AD_A
CONTRAST
BATT
LCD_DIR
BATT
CONTRAST
AD_B
RESET
ENC_BENC_A
ENC_BENC_A
MUTE
AD_C
INT0
INT0
AD_AAD_BAD_C
+D 3. 3
D
D
+D 3. 3
D
D
D
D
D
D
+D 3. 3
D
D
D
D
+5D
D
D
+D 3. 3
+D 3. 3
D
D
+D 3. 3
D
+5D
+D 3. 3
D
+D 3. 3
D
+D 3. 3
+D 3. 3
D
D
+D 3. 3+D 3. 3
D
D
+5D
D
D
+D 3. 3
+D 3. 3D
+D 3. 3
D
D
D
+D 3. 3
D
D
D
D
+D 3. 3
D
D
D
D
D
+D 3. 3
D
D
+D 3. 3
D
D
+D 3. 3
+D 3. 3
+5D
+D 3. 3
+5D
+D 3. 3
D
D
D
D
+D 3. 3
D+D 3. 3
D
+D 3. 3
D
+D 3. 3
+D 3. 3
D
D
+D 3. 3
D
+D 3. 3
D
D
+D 3. 3
D
D
+D 3. 3
+D 3. 3
D
+D 3. 3
+D 3. 3
+D 3. 3
+D 3. 3
+D 3. 3
+D 3. 3
+D 3. 3
D
+D 3. 3
+D 3. 3
+D 3. 3
+D 3. 3
+D 3. 3
+5D
+D 3. 3
D
D
D
D
+5D
+5D +5D
D
+D 3. 3
+D 3. 3
D
TVCC2Testpin 1
R82
10k
R914.7k
TGND1Testpin 1
TA13 Testpin1
RA4CRN34101J1 82 73 64 5
TGND2Testpin 1
CN853015-0210
1 1
2 2
D9RB500V-40
12
C77
0.1
R7610k
D111SS352
1 2
RA2CRN34101J
1 82 73 64 5
C112 0.1
TA14 Testpin1
RA18CRN34103J
18
27
36
45
D61SS352
12
C14310/16
RA8 N.I.U
1 82 73 64 5
24
5
INO
UT
24
5
JK8YKF51-5054
1214
15
2224
25
30 40 50 60
C800.1
RA17 N.I.U
1 82 73 64 5
IC16BTC7W04F
35
CN52.54mm
11
22
TA15 Testpin1
R1041K
IC22
UPD431000AGW-A10
A162
A1531
A143
A1328
A124
A1125
A1023
A926
A827
A75
A66
A57
A48
A39
A210
A111
A012
CE230
CE122
R/W29
OE24
I/O8 21
I/O7 20
I/O6 19
I/O5 18
I/O4 17
I/O3 15
I/O2 14
I/O1 13
NC 1
VDD 32
VSS 16
R1064.7K
TD14Testpin 1
Q10N.I.U.
1
32
R944.7K
R96 N.I.U
TA16 Testpin1
TA1 Testpin1
RA13 N.I.U
1 82 73 64 5
TD13Testpin 1R10510K
R101
N.I.U.
D8
1SS352
12
TA2 Testpin1
TA17 Testpin1
R108 100
C1390.1
R67 120
TD12Testpin 1
L17N.I.U.
DA3 1SS3022 1
3
C75N.I.U.
C1270.001
C1300.01
TA18 Testpin1
C91 0.1
TA3 Testpin1
CN4
A2001WR2-3P
1 1
2 2
3 3
+
-
IC25ATC75S51F
3
14
R1001K
CN1A2541WR2-2A16NP
11 22 33 44 55 66 77 88 99 1010 1111 1212 1313 1414 1515 1616
R80 10k
TD11Testpin 1
TA4 Testpin1
R1034.7K TA19 Testpin1
D10
1SS35212
R93 N.I.U
R1114.7K
C1340.1
CN6
A2001WR2-7P
1 1
2 2
3 3
4 4
5 5
6 6
7 7
CN7A2001WR2-8P
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
R92 N.I.U
R1104.7K
TD10Testpin 1
RA12 CRN34101J
1 82 73 64 5
R1071K
L12 N.I.U
TA5 Testpin1
R69100
DA4 1SS3022 1
3
C780.1
C1420.1
R88 N.I.U
R99N.I.U
RA10 N.I.U
1 82 73 64 5
R97 N.I.U
C121 15P
TD9Testpin 1
TA6 Testpin1
RA20 N.I.U
1 82 73 64 5
R98 N.I.U
CN2A2001WR2-10P
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 10
RA7 N.I.U
1 82 73 64 5
TD8Testpin 1
TCS0 Testpin1
C13310/16
R75 22 1/2W
IC14TC74LVXC3245FS
DIR2
A13 A24 A35 A46 A57 A68 A79 A810
GN
D11
B8 14
B7 15
B6 16
B5 17
B4 18
B3 19
B2 20
B1 21
G22
VC
CB
24V
CC
A1
GN
D13
GN
D12
NC23
TA7 Testpin1
D7N.I.U.
12
C12610/16
L16
N.I.U
L14
N.I.U
BT1CR2032/383-009
12
TRD Testpin1
IC18TC74VHCT541F
A89
A78
A67
A56
A45
A34
A23
A12
G219
G11
Y8 11
Y7 12
Y6 13
Y5 14
Y4 15
Y3 16
Y2 17
Y1 18
VC
C20
GN
D10
C79 0.1
C138
0.1
IC27TC7SH04F
2 4
53
C13
20.
1
R90 N.I.U
TA8 Testpin1
TA0 Testpin1
JK11
HTJ-064-12D
1
23
C1350.1
C1410.1
RA9 N.I.U
1 82 73 64 5
IC16CTC7W04F
62
C890.1
RA16 N.I.U
1 82 73 64 5
C11310/16
RA6CRN34101J1 82 73 64 5
C82N.I.U.
RA21 N.I.U
1 82 73 64 5
RA5CRN34104J
18
27
36
45
R10210k
R109 10
TA9 Testpin1
X1
SG-8002JC(67.7376MHz)
OE 1
GND2 OUT 3
VDD4
C870.1
TCS4 Testpin1
CN3A2001WR2-11P
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 10
11 11
RA3CRN34104J
18
27
36
45
RA19CRN34103J
18
27
36
45
R682.2k
X2MA-406 (20MHz)
14
R77 22
L13
N.I.U
TA10 Testpin1
C111 0.1
Q11DTA143EKA
1
32
R95N.I.U
R811M(F)
TD15Testpin 1
RA15 CRN34101J
1 82 73 64 5
RA1CRN34101J
1 82 73 64 5
C114 0.1
TA11 Testpin1
R83N.I.U.
IC13PC400
1
3
4
5
6
C137N.I.U.
R84470k
C12210/16
R854.7K
TA12 Testpin1
C1280.1
C11915P
TVCC1Testpin 1
C1290.01
IC16ATC7W04F
17
IC16DTC7W04F
84
C1310.1
C1200.1
C880.1
C10410/16
C1150.1
IC21
HD6412312VF
VC
C42
P27/TIOCB5/TMO194
P14/TIOCA15
P25/TIOCB4/TMCI192
P16/TIOCA27
P26/TIOCA5/TMO093
P20/TIOCA356
P22/TIOCC3/TMRI058
P21/TIOCB357
VS
S9
TXD0/P3010 TXD1/P3111 RXD0/P3212 RXD1/P3313 IRQ4/SCK0/P3414 IRQ5/SCK1/P3515
D0/PE0 16D1/PE1 17D2/PE2 18D3/PE3 19
VS
S20
D4/PE4 21D5/PE5 22D6/PE6 23D7/PE7 24D8 25D9 26D10 27D11 28D12 29D13 30D14 31D15 32
VC
C67
A0 34A1 35A2 36A3 37A4 38A5 39A6 40A7 41
VS
S33
A8 43A9 44A10 45A11 46A12 47A13 48A14 49A15 50A16 52A17 53A18 54A19 55V
SS
51
PF2/WAIT/IRQ2 76
PF0/BREQ/IREQ0/CS4 78PF1/BACK/IRQ1/CS5 77
P23/TIOCD3/TMCI061
STBY66
RES 64
NMI65
VS
S70
EXTAL69
XTAL68
VC
C10
0
PF6/AS 72
PF5/RD 73
PF4/HWR 74
PF3/LWR/IRQ3 75
MD059 MD160 MD263
AVCC79
VREF80
P40/AN081 P41/AN182 P42/AN283 P43/AN384 P44/AN485 P45/AN586 P46/AN6/DA087 P47/AN7/DA188
AVSS89
P24/TIOCA4/TMRI191
PG1/CS3/IRQ7/CS6 96
PG2/CS2 97
PG3/CS1/CS7 98
PG4/CS0 99
PF7/PHAI 71
VS
S90
P15/TIOCB1/TCLKC6
P17/TIOCB2/TCLKD8
P13/A23/TIOCD0/TCLKB 4
P12/A22/TIOCC0/TCLKA 3
P11/A21/TIOCB0 2
P10/A20/TIOCA0 1
PG0/ADTRG/IRQ695
WDTOVF(FWE*)62
C1180.1
R86 N.I.U
R87 N.I.U
R89 N.I.U
C11610/16
IC26
LH28F400BVE-BL85
NC 9
NC 10
WE11
RP12
VPP 13
WP14
RY/BY15
NC 16
CE26
GND 27
OE28
DQ0 29
DQ8 30
DQ1 31
DQ9 32
DQ2 33
DQ10 34
DQ3 35
DQ11 36
VCC 37
DQ4 38
DQ12 39
DQ5 40
DQ13 41
DQ6 42
DQ14 43
DQ7 44
A-1/DQ1545
GND 46
BYTE47
A1717
A1648
A151
A142
A133
A124
A115
A106
A97
A88
A718
A619
A520
A421
A322
A223
A124
A025
IC29TC74HC238AF
C 3
B 2
A 1
G2B 5
G2A 4
G1 6
Y77
Y69
Y510
Y411
Y312
Y213
Y114
Y015
VC
C16
GN
D8
RA22N.I.U.
18
27
36
45
RA23N.I.U.
18273645
RA24N.I.U.
18273645
R11
7N
.I.U
.
R11
8N
.I.U
.
R119
10K
R12
010
K
R116100k
R1214.7M(F)
D15N.I.U.
13
R129N.I.U.
R13010K
R131N.I.U.
RA25N.I.U.
18
27
36
45
R132 10KR133 10KR134 10K
RA26N.I.U.
18
27
36
45
RA27N.I.U.
18
27
36
45
R135 N.I.U
R136 N.I.U
DA5 N.I.U
2 1
3
RA28 CRN34103J1 82 73 64 5
IC15M51953AFP
RS
T6
DLY 5
VCC7
GND4
NC 1
NC 2
NC 3
NC 8
C900.33/50
IC28ATC7WH32FU
1
27
R13710k
IC28BTC7WH32FU
5
63
C1400.1
IC28CTC7WH32FU
84
R73N.I.U.
R138 N.I.U.
+
-
IC25BTC75S51F
52
C1360.1
IC20RA0A-101 (TC223C080AF-101) 1
611
15 2226
29
30
31
37
65666768697071
7475
76
777879
8182838486878889919294959697
99100102103104105106107
118119121122123125126127
129130
131
132133
134135
137138
139141
ADDATA
LRCK
MCK
ADDATB
BCK
MUTEDIF_DATA
DADATB
DADATA
26
GT-6(T)
BOARD ASSY (Analog)
SEND
A-9
D
A
A A
A
+D 3. 3
+D 3. 3 +D 3. 3
JK6
HTJ-064-12i
1
24
R58100K
C4610/16
P
R551K
R391M
L9N.I.U
Q52SA1586GR
1
32 R37
10k
R3810K
D11SS352
12
C35470/6.3
C47 10/16
R59100K
R561K
Q6
RN1441-A
1
23
Q152SA1586GR
1
32
R12247k
R12347k
R12447k
MCK
BCKLRCKDADATA
ADDATA
RES
MUTE
29
Sep. 2001
CIRCUIT DIAGRAM (MAIN 2/2)
fig.block
MAIN
GUITAR IN
HEADPHONES
OUT L(MONO)
OUT R
RETURN
A
A
A
A
DD
A+9
A-9
D
D
D
AA
A
D
D
A
A
A
A
A
A
A
A
A
A
A
A
D
A
A-9
A
A
D
D
A
DDD
+D 3. 3
D
A
A+9
A+9
A-9
A+9
A-9
A A
A
A
A
A+9
A-9A
A
A+9
A-9
A
A
A
A
A
A
A+9
A-9
D
D
+5D
A
A
A
A
D
D
A D
A D
A D
+
A
+
A
D
+
+
D
+
D
D
A
C1110/16
+
-
IC5AM5216F
2
31
+
-
IC6CM5218AFP
84
DA1N.I.U.
2 13
R321k
+
-
IC1CM5238FP
84
+
-
IC7B NJM2100M
6
57
C21
100/16
R34
100k
R3010K
C16 10P
R221k
C30
10/16
JK2HTJ-064-12D
1
23
R1147/2W
R24
10K
+
-
IC5BM5216F
6
57
R1447/2W
R63 3k(F-rank)
C2N.I.U.
C31
100/16
C62150p
R331k
L7N.I.U
C66100/16
L4N.I.U
C23150P
R661.8k
R35
10K
+
-
IC4BM5218AFP
6
57
R42 18k
C4110P
C72100/16
R25330
C240.001
C3910/16
R2682K
VR1BRK09K12A0 (10kAx2)
1020
IC3AK4552VT
DEM0 6
SDTO 8LIN2
RIN1
VD5
DEM1 7
SDTI 9
VCOM 14
LOUT15
PDN 13
LRCK 10
MCLK 11
ROUT16
BCLK 12
VA4
VSS3
R2710K
Q3RN1441-A
1
23
+
-
IC6AM5218AFP
2
31
C2510P
JK7
HEC0740-010010
213
C33150P
C57N.I.U.
R28 47K
C29
10/16
R36330
R641.8k(F-rank)
R1910K
Q142SB1132
1
2 3
C26
10/16
C37N.I.U.
R4810K
FL1DSS9ND31H223Q91J
JK3
HTJ-064-12i
1
24
C61470/6.3
R29N.I.U
C360.01
R5210K
FL2DSS9ND31H223Q91J
C67100/35
R40 1.2k
C440.1
R651.5k
JK1
HTJ-064-12i
1
24
C55ERZVA7V330
C70100/35
R41 10k
C4547/16
R1210K
R46
220k
SW1ASDKLA1-B
1 2
R5410
R1310K
C68100/16
L5N.I.U
+
-
IC6B
M5218AF
6
57
C69100/16
D4
1N4004
1 2
R4510K
R51 33k
C10.01
D5
1N4004
12
DA2
N.I.U.
2 1
3
R910
R6047k
R11.2K
C140.1
Q122SA1241-Y1
23
C65470/35
C70.1
R2 10K
C1347/16
C22N.I.U.
C71470/35
C90.1
C1010/16
Q4RN1441-A
1
23
R5 100K(F)
C34
10/16
JK4
HTJ-064-12i
1
24
L11470uH(TSL1112SRA-471KR72)
C3 10P
C810/16
C27
10/16
+
-
IC2ANJM2100M2
31
R17 47K
R4 12K(F)
R620.68 (1/2W)
C17
10/16
R1610K
C150.001
L6N.I.U
JK5
HTJ-064-12i
1
24
+
-
IC4CM5218AFP
84
R7
1M
R2047K
C74100/35
C18
10/16
+
- IC2CNJM2100M
84
C64100/35
C580.1
R8 12K(F)
R610K
C590.1
R10 6.8K(F)
C50.1(P)
R6110k
C6 10P
R3 18k
+
-
IC2BNJM2100M6
57
C40
10/16
C5210/16
IC9NJM2374AM
SI7
V+6
ES 2
IN+ 5
CS
1C
T3
CD
8G
ND
4
+
-
IC7CNJM2100M
84
L1N.I.U
R44 100K(F)
R1144.7k
C38 10P
C4910/16
R53 6.8k(F)
VR1ARK09K12A0 (10kAx2)
23
13
2212
1
R43 12K(F)
+
-
IC7A NJM2100M
2
31
IC8AK4552VT
DEM0 6
SDTO 8LIN2
RIN1
VD5
DEM1 7
SDTI 9
VCOM 14
LOUT15
PDN 13
LRCK 10
MCLK 11
ROUT16
BCLK 12
VA4
VSS3C480.1
IC10BA17805FP
IN1 OUT 3
CO
M2
+
-
IC4AM5218AFP
2
31
D3SS14 1
2
D12
1N4004
1 2
C530.1
C19
10/16
C430.001
L2N.I.U
C144220/35
R3147K
C500.1
R4710k
L8 N.I.U
C28
10/16
C5110/16
R1154.7k
R49 47k
+
-
IC1BM5238FP
6
57
L10 N.I.U.
C32N.I.U.
C540.001
+
-
IC1AM5238FP
2
31
C42 10P
C410/16
R211k
R57 33k
R50 12K(F)
Q72SD1758
1
32
R23100k
L3N.I.U
Q82SB1182
1
2 3
D2
1N4004
1 2
R1582K
D13RD10ESAB2
12
Q132SD1664
1
32
C562200/35
C20
10/16
+
-
IC5CM5216F
84
R1122.2k
Q1RN1441-A
1
23
D14RD10ESAB2
12
Q2RN1441-A
1
23
R1131k
C120.1
R18N.I.U
C1470.1
C1480.1
C1490.1
C145 10p
C146 10p
C152
10/16
C153
10/16
C150
10/16
C151
10/16
C15410p
C157100/16
R127N.I.U.
R128N.I.U.
C158N.I.U.
C1590.1
C1600.1 C161
N.I.U.
IC31 S-81233SGY
IN2 OUT 3
CO
M1
C7647/16
C60N.I.U.
R14110 (0805size)
R13910 (0805size)
R14010 (0805size)
IC30 N.I.U.
IN2 OUT 3
CO
M1
D161SS352
12
D171SS352
12
C1630.1
C1620.1
R1421.5k
R143N.I.U.
MCK
BCKLRCKDADATB
ADDATB
RES
28
GT-6(T)
View from components side
31
Sep. 2001
CIRCUIT BOARD (SW SHEET)
fig.block
View from components side
30
Sep. 2001 GT-6(T)
CIRCUIT DIAGRAM (SW SHEET)fig.circuit-md
SW1 BOARD ASSY (1/6)
SW2 BOARD ASSY (2/6)
TO CN2 ONMAIN BOARD
RIBON CABLE (3P)
EXP BOARD ASSY (6/6)
D+3V
DGND
ENC BOARD ASSY (5/6)
SW3 BOARD ASSY (3/6)
RIBON CABLE (7P)
DGNDSW_DATA6SW_DATA6
SW_DATA7SW_DATA7
SW_SCAN0SW_SCAN0SW_SCAN1SW_SCAN1SW_SCAN2SW_SCAN2SW_SCAN3SW_SCAN3
SW_DATA7SW_DATA7
SW_SCAN1SW_SCAN1
SW_SCAN2SW_SCAN2
SW4 BOARD ASSY (4/6)
TO CN8 ON MAIN BOARD
TO CN6 ON MAIN BOARD
TO CN3 ON MAIN BOARD
TO CN7 ON MAIN BOARD
DELAYLEVEL
REVERBLEVEL
DELAYFEEDBACK
CHORUSLEVEL
PRE/SPLEVEL
PRE/SPSPEAKER
PATCHLEVEL
OD/DSDRIVE
OD/DSTYPE
OD/DSLEVEL
PRE/SPTYPE
PRE/SPTREBLE
PRE/SPGAIN
PRE/SPBASS
PRE/SPMIDDLE
A
B
C
GF
E
D DP
MANUALNAME/FV/CHAIN/NS UTILITY EQ SFX-1 SFX-2 CHORUS REVERB
DELAYTAP DELAY PRE/SP OD/DS
WAH EZ TONE TUNER/BYPASS
PEDALASSIGN
OUTPUTSELECT
PRE/SPTYPE VARIATION
OD/DSTYPE VARIATION
(RED)(GREEN) (RED)(GREEN)
BANKDOWN
BANKUP
EXP PEDAL FXON/OFF
BANK DOWN BANK UP
"CTL""4""3""2""1"
"CTL""4""3""2""1"
LED_DATA3
LED_DATA4
LED_DATA2
LED_DATA1
OD/DS
OD/DSTYPE VARIATION
PRE/SP
PRE/SPTYPE VARIATION
SCAN3
SCAN2
SCAN1
DATA0
DATA1
DATA2
DATA3
DATA4
DATA5
DELAY WAHPARAMETER[<](LEFT)
PARAMETER[>](RIGHT)
EZTONE
REVERB EQ EXIT WRITETUNER/BYPASS
DELAYTAP SFX-1
PEDALASSIGN
OUTPUTSELECT MANUAL
CHORUS SFX-2NAME/FV/CHAIN/NS UTILITY
TO CN4 ON MAIN BOARD
[6detents] [11detents]
[6detents]
EXP PEDAL FXON/OFF
AD_A
AD0AD1
SW
_DA
TA
4
SW
_DA
TA
3
SW
_DA
TA
2
SW
_DA
TA
1
SW
_DA
TA
0
SW_SCAN3SW_SCAN2
SW_SCAN0SW_SCAN1
AD_BAD_C
SW
_DA
TA
5
SW_SCAN3
SW_SCAN2
SW_SCAN1
SW_SCAN0
SW_DATA4SW_DATA3SW_DATA2SW_DATA1SW_DATA0
SW_DATA5
D
D
+D 3. 3 +D 3. 3 +D 3. 3 +D 3. 3 +D 3. 3
+D 3. 3
D
+D 3. 3
+D 3. 3
+D 3. 3
D
+D 3. 3+D 3. 3
+D 3. 3
D
+D 3. 3 +D 3. 3 +D 3. 3 +D 3. 3 +D 3. 3 +D 3. 3 +D 3. 3 +D 3. 3 +D 3. 3 +D 3. 3 +D 3. 3 +D 3. 3
+D 3. 3
D
+D 3. 3
D
D
D
+D 3. 3
D
+D 3. 3+D 3. 3+D 3. 3 +D 3. 3 +D 3. 3
D
+D 3. 3+D 3. 3
D
+D 3. 3+D 3. 3
D
+D 3. 3
D D
D D D D D D D D
+D 3. 3
D
D
+D 3. 3 +D 3. 3FER +3. 3
FER +3. 3 FER +3. 3 FER +3. 3 FER +3. 3 FER +3. 3 FER +3. 3 FER +3. 3 FER +3. 3
+D 3. 3
D
DD
FER +3. 3 FER +3. 3
D
FER +3. 3
D
FER +3. 3
D
FER +3. 3
D
FER +3. 3 FER +3. 3
D
D14
1SS133
1 2
SW16
SKQKAB
1 2D16
1SS133
1 2
R31 470
SW17
SKQKAB
1 2
IC3BU2090 (DIP)
VD
D16
CLOCK3
DATA2
Q11 15
Q10 14
Q9 13
Q8 12
Q7 11
Q6 10
VS
S1
Q5 9
Q4 8
Q3 7
Q2 6
Q1 5
Q0 4
A B
ENEN1AEVE GC1 F20 24B
1 2 3
R14390
IC2BU2090 (DIP)
VD
D16
CLOCK3
DATA2
Q11 15
Q10 14
Q9 13
Q8 12
Q7 11
Q6 10
VS
S1
Q5 9
Q4 8
Q3 7
Q2 6
Q1 5
Q0 4
R1
390
D17
1SS133
1 2
R6
390
LED14L-312LRD
12
SW18
SKQKAB
1 2
LED6
L-34HDSL
12
CN5RIBON 3P (1/2)
11
22
33
D18
1SS133
1 2
LED7
L-34HDSL
12
Q3RN2207
3
21
CN6RIBON 3P (1/2)
11
22
33
SW19
SKQKAB
1 2
R7
390
Q4RN2207
3
21
SW6
SKQKAH
1 2
D19
1SS133
1 2
LED8
L-34HDSL
12
SW3
SKQKAH
1 2
LED29 A-552SR BW
A1
16
B1
15
C1
3
D1
2
E1
1
F1
18
G1
17
DP
14
DP
9
A2
11
B2
10
C2
8
D2
6
E2
5
F2
12
G2
7
DIG2 13DIG114
R24390
D6
1SS133
1 2
SW20
SKQKAB
1 2
R8
390
SW7
SKQKAH
1 2
SW21
SKQKAB
1 2R23120
CN2WIRING 10P
11
22
33
44
55
66
77
88
99
1010
VR6RD901-40-125F-B54-00D
1
2
3
D7
1SS133
1 2
D21
1SS133
1 2
VR7RD901-40-125F-B54-00D
1
2
3
R15390
SW27
SKQKAB
1 2
R32 470
VR8RD901-40-125F-B54-00D
1
2
3
LED15L-312LRD
12
D27
1SS133
1 2
R33 470
VR9RD901-40-125F-B54-00D
1
2
3
SW22
SKQKAB
1 2
R34 470
D22
1SS133
1 2
R35 470
LED9L-312LRD
12
SW28
SKQKAB
1 2
R36 470
LED21L-312LRD
12
R9390
VR2RD901-40-125F-B54-00D
1
2
3
D28
1SS133
1 2
R37 470
R25390
VR3RD901-40-125F-B54-06D
1
2
3
C10.1
SW23
SKQKAB
1 2
C50.1
R38 470
LED22L-312LRD
12
VR4RD901-40-125F-B54-00D
1
2
3
D23
1SS133
1 2
R39 470
CN10WIRING 2P
1 1
2 2
R26390
VR5RD901-40-125F-B54-11D
1
2
3
IC6BU2090 (DIP)
VD
D16
CLOCK3
DATA2
Q11 11
Q10 10
Q9 9
Q8 6
Q7 7
Q6 5
VS
S1
Q5 4
Q4 14
Q3 13
Q2 12
Q1 8
Q0 15
SW29
SKQKAB
1 2
R40 470
R27390
R16390
D29
1SS133
1 2
R41 470
LED23L-312LRD
12
LED16L-312LRD
12
SW24
SKQKAB
1 2
R42 470
LED25L-312LRD
12
D24
1SS133
1 2
R43 470
R28390
CN1RIBON 7P (1/2)
11
22
33
44
55
66
77
SW30
SKQKAB
1 2
R44 470
CN3RIBON 7P (1/2)
1 1
2 2
3 3
4 4
5 5
6 6
7 7
D30
1SS133
1 2
CN11WIRING 8P
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
R29390
SW25
SKQKAB
1 2
SW8
CARBON SW
1 2
LED24L-312LRD
12
A B
EN
EN1BEVE GC1 F20 24B
10 20
D25
1SS133
1 2
R10390
SW31
SKQKAB
1 2
LED10L-312LRD
12
D31
1SS133
1 2
SW26
SKQKAB
1 2D26
1SS133
1 2
LED2
L-34HDSL
12
SW9
SKQKAB
1 2
R17390
R2
390
LED27L-3WSRSGW-CC
12
3
D9
1SS133
1 2
LED17L-312LRD
12
R11390
Q1RN2207
3
21
D10
1SS133
1 2
LED18L-312LRD
12
LED11L-312LRD
12
Q2RN2207
3
21
SW10
SKQKAB
1 2
R18390
R22390
SW11
SKQKAB
1 2
LED19L-312LRD
12
R21120
LED3
L-34HDSL
12
D11
1SS133
1 2
R19390
R3
390
D12
1SS133
1 2
LED20L-312LRD
12
SW12
SKQKAB
1 2
R20390
R12390
D13
1SS133
1 2
CN8
WIRING 7P
1 1
2 2
3 3
4 4
5 5
6 6
7 7
LED12L-312LRD
12
SW13
SKQKAB
1 2
SW1
SKQKAH
1 2
LED4
L-34HDSL
12
D1
1SS133
1 2
R4
390
SW2
SKQKAH
1 2
SW14
SKQKAB
1 2
D2
1SS133
1 2
IC4TC74HC4051AP
7 4
6 2
5 5
4 1
3 12
2 15
1 14
0 13
VEE7
COM3
C 9
B 10
A 11
INH 6
VCC16
GND8
D3
1SS133
1 2
C20.1
R13390
SW4
SKQKAH
1 2
CN7
WIRING 11P
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 10
11 11
LED28L-3WSRSGW-CC
12
3
LED13L-312LRD
12
D4
1SS133
1 2SW5
SKQKAH
1 2
LED5
L-34HDSL
12
SW15
SKQKAB
1 2
D5
1SS133
1 2
R5
390
IC1BU2090F (SOP)
VD
D16
CLOCK3
DATA2
Q11 15
Q10 14
Q9 13
Q8 12
Q7 11
Q6 10
VS
S1
Q5 9
Q4 8
Q3 7
Q2 6
Q1 5
Q0 4
D20
1SS133
1 2D15
1SS133
1 2
LED1
L-34HDSL
12
IC5TC74HC4051AP
7 4
6 2
5 5
4 1
3 12
2 15
1 14
0 13
VEE7
COM3
C 9
B 10
A 11
INH 6
VCC16
GND8
C30.1
C40.1
VR14RD901-40-125F-B54-06D
1
2
3
VR16RD901-40-125F-B54-00D
1
2
3
VR10RD901-40-125F-B54-00D
1
2
3
VR13RD901-40-125F-B54-00D
1
2
3
VR12RD901-40-125F-B54-00D
1
2
3
VR15RD901-40-125F-B54-00D
1
2
3
VR11RD901-40-125F-B54-00D
1
2
3
VR1ARK11K1140 (10KSB)
11
12
13
14
CN4WIRING 3P
1 1
2 2
3 3
SW SHEET ASSY
3332
34
Sep. 2001
ERROR MESSAGE
Normal Error Message
fig.EM-1
The memory backup battery inside the GT-6 has run down. (This message will appear when the power is turned on.)
Replace the battery as soon as possible. For battery replacement, please contact a nearby Roland service center or your dealer.
fig.EM-2
There is a problem with the MIDI cable connection.
Check to make sure the cable has not been pulled out or is not shorted.
fig.EM-3
You’ve attempted to switch patches by rotating the [PATCH/VALUE] dial, but the Dial function (p. **) is set to “VALUE Only.”
If you want to be able to switch patches using the [PATCH/VALUE] dial, set the Dial function to “PATCH No.& VALUE.”
fig.EM-4
More MIDI messages were received in a short time than could be processed correctly.
Error messages in test mode
DSP check
fig.EM-1
Problem : The data written in the DSP (IC8) PROM and the data read do not match.
* Check the following parts and wiring.
DSP(IC20): pins 77-79, 81-84, 86-89, 91-92, 94-97, 99-100, 102-107
fig.EM-2
Problem : The data written to the DRAM (IC24) via the DSP (IC20) and the data read do not match.
* Check the following parts and wiring.
DSP(IC20): pins 7-10, 12-14, 16, 17, 19-21, 23-25, 27, 32-35
DRAM(IC24): pins 1-44
BATTERY check
fig.EM-3
“LOW” is displayed when 2.7 V or lower.
fig.EM-4
“No Battery !!” is displayed when a battery is not inserted.
* Insert a new lithium battery.
If an error message continues to appear when a new lithium battery is inserted, check the following parts and wiring.
CPU(IC21):pin 84
OP.Amp(IC25):pins 1-5
Resistor(R80, R81, R82, R121)
Diode(D9, D10)
Capacitor(C118, C136)
MIDI Check
fig.EM-5
Problem : No MIDI cables are connected.
fig.EM-6
Problem : The data sent (MIDI OUT) and the data received (MIDI IN) do not match.
* Check the following parts and wiring.
• MIDI IN
CPU(IC21):pin 12
Resister(R67-R69)
Capacitor(C80)
Photo Coupler(IC13)
Diode(D6)
• MIDI OUT
CPU(IC21):pins 10
Resister(R76,R77,R138)
Gate IC(IC16)
DSP Pitch interruption signal check
fig.EM-7
Problem : The interruption signal generated from DSP (IC8) internal oscillation is not recognized.
* Check the following parts and wiring.
CPU(IC21):pin 8
DSP(IC20):pin 75