SERVICE MANUAL
COMPACT DISC DECK RECEIVER
E Model
HCD-RG88Ver 1.0 2002.03
9-873-655-01 Sony Corporation2002C0500-1 Home Audio Company
C 2002.03 Published by Sony Engineering Corporation
SPECIFICATIONS
HCD-RG88 is the amplifier, CD player,tape deck and tuner section in MHC-RG88.
– Continued on next page –
Model Name Using Similar Mechanism HCD-RG77
CD CD Mechanism Type CDM58E-30BD60C
Section Base Unit Name BU-30BD60C
Optical Pick-up Name A-MAX.3
TAPE Model Name Using Similar Mechanism HCD-RG77
Section Tape Transport Mechanism Type TCM-230AWR41CS
Amplifier section
The following are measured at AC 120, 220, 240V50/60 HzDIN power output (rated) 160 + 160 watts
(6 ohms at 1 kHz, DIN)Continuous RMS power output (reference)
210 + 210 watts(6 ohms at 1 kHz,10% THD)
InputsGAME (VIDEO): 1 Vp-p, 75 ohms(phono jack)GAME (AUDIO): Voltage 250 mV,(phono jacks) impedance 47 kilohmsMD/VIDEO (AUDIO) IN: voltage 450 mV/250 mV,(phono jacks) impedance 47 kilohmsMIC: sensitivity 1 mV,(phone jack) impedance 10 kilohms
OutputsVIDEO OUT: max. output level 1 Vp-p,(phono jacks) unbalanced, Sync.
negative load impedance75 ohms
PHONES: accepts headphones of(stereo mini jack) 8 ohms or moreFRONT SPEAKER: accepts impedance of 6 to
16 ohmsSURROUND SPEAKER: accepts impedance of
24 ohms or moreSUBWOOFER accept impedance of
8 ohms or more
CD player section
System Compact disc and digitalaudio system
Laser Semiconductor laser(λ=795nm)
Laser Output Max. 44.6 µW**This output is the valuemeasured at a distance of200 mm from theobjective lens surface onthe Optical Pick-up Blockwith 7 mm aperture.
Frequency response 2 Hz – 20 kHz (±0.5 dB) Wave length 795 nmCD OPTICAL DIGITAL OUT(Square optical connector jack, rear panel)Wave length 660 nmOutput Level –18 dBm
Tape player sectionRecording system 4-track 2-channel stereoFrequency response 50 – 13,000 Hz (±3 dB),
using Sony TYPE Icassette
HCD-RG88
2323
SECTION 7DIAGRAMS
7-1. BLOCK DIAGRAM – CD SERVO Section –
SQSO
SQCK
A/DCONVERTER
CH1OUTR
CH1OUTF
6
7
8
9
16
18
11
10
12
21
51
49
48
43
24
4140 39
64 15
28
29
30
31
32
33
24
25
23
6
5
3
2
17
18
15
16
CD A+5V
DETECTOR
A
B
C
D
RFSUMMING
AMP
FOCUSERROR AMP
TRACKINGERROR AMP
RFAC
FE
RF AMP,FOCUS/TRACKING ERROR AMP
IC103
TEE
FF I-V AMP
E I-V AMP
AUTOMATICPOWER
CONTROLQ101
APC LDAMP
LD
LDPD
LASER DIODE
RFAC
ASYO
ASYI
ASYMMETRYCORRECTION
DIGITALPLL
DIGITAL SIGNAL PROCESSOR,DIGITAL FILTER, D/A CONVERTER
IC101 (1/2)
DATA
XLAT
CLOK
14 5 6
MDP
26 7 8
XLON
3
XRST
DIGITALCLV
D/AINTERFACE
SE TE FERF
DCFO
CUS/
TRAC
KING
/SLE
DSE
RVO
DSP
FOCU
S/TR
ACKI
NG/S
LED
PWM
GEN
ERAT
OR
SFDR
CH3FIN
CH4SIN
CH3RIN
CH3OUTF
CH3OUTR
CH2RIN
CH2FIN
CH1RIN
CH1FIN
20MUTE
SRDR
TFDR
TRDR
FFDR
FRDR
EMPH
WFC
KGF
S
MIRR/DFCT/FOK
DETECTOR
SERVO AUTOSEQUENCER
SERVOINTERFACE
CPU INTERFACE
18
6362
6119
SENS
20
363735
34 19
SCOR
SQ-D
ATA-
INSQ
-CLK
XLTCD-CLKCD-DATA
SENS
SCOR
1 2
32 33
SCLK
COUT
9 21
SSTP
27
FOK
2223
MIRRDFCT
TO SERVO INTERFACE
CH4OUTF
CH4OUTRM101
(SPINDLE)MOTORDRIVE
MOTORDRIVE
CH2OUTR
CH2OUTF
M
M
M102(SLED)
FOCUS/TRACKING COIL DRIVE,SPINDLE/SLED MOTOR DRIVE
IC102
2-AXISDEVICE
(TRA
CKIN
G)(F
OCUS
)
DIGITAL SERVOPROCESSORIC101 (2/2)
OPTICAL PICK-UPBLOCK
(A-MAX. 3)
SW
PD
11
12
14
13
54 56 53 55
FILTER
FILO
PCO
CLTV FILI
EFMDEMODULATOR
SERIALIN
INTERFACE
DIGITALFILTER,
NOISE SHAPER
PWM&
INTEGRATORBUFFER
CLOCKGENERATOR
TIMINGLOGICDIGITAL
OUT
INTE
RNAL
BUS
16KRAM
ERRORCORRECTOR
SUBCODEPROCESSOR
60
43 XRST
AIN1
AIN2
AOUT1
AOUT2
TO MIRR/DFCT/FOK DETECTOR
PCMDBCK
LRCKC2PO
DOUT
70
77
LOUT1
LOUT2R-CH
72
75
71
76
A(Page 25)
EQIN
1534 EQ
ACSUM
17FEI
RF DCAMP 28
RFDCO
29RFDCI
19TE BAL
COILDRIVE
COILDRIVE
242628
BU-PWM3BU-PWM2BU-PWM1
PWM1
PWM3
PWM2
PWM3PWM2PWM1
40 LD-ON 48
49
BU UP/DOWN-SW
TBL-SENS
50CD-MUTE
DISC TRAYSTATUS SENSOR
IC711
LASER DIODEON SWITCHQ202 – 205
OPEN-SW 46
CLOSE-SW 47
OPEN
CLOSE
S701DISC TRAY OPEN/CLOSE
DETECT
S711OPTICAL PICK-UPUP/DOWN DETECT
LOAD-OUT 45LOAD-IN 44 9
7RINFIN
MOTORDRIVE 4
2OUT1OUT2
TURN MOTORDRIVERIC701
M721(TURN)M
SYSTEM CONTROLLER(CD MECHANISM CONTROL)
IC501 (1/4)
• SIGNAL PATH: CD PLAY (ANALOG)
: CD PLAY (DIGITAL OUT)
• R-ch is omitted due to same as L-ch.
OPTICALTRANSCEIVER
IC201
CD DIGITAL OUTOPTICAL
CDL-CH
RFACVCA
(LIMIT)When the opticalpick-up is inner position
ON :
E-F BALANCE(1 TRACK JUMP)
RV101
MUTINGQ201
MUTING CONTROLSWITCH
Q206, 207
R-CH
67 66
XTAO
XTAI
X10116.9344MHz
HCD-RG88
2424
7-2. BLOCK DIAGRAM – TUNER/TAPE DECK Section –
FM ANT
ANT GND
AM ANT
ANT GND ST-DINST-CLK
ST-CEST-MUTE
TUNEDSTEREO
L-CH
R-CH
ST-DOUT
TUNER UNIT
FM 75Ω
AM
R-CH
25
ST-D
IN
23
ST-D
OUT
27
ST-C
LK
22
ST-C
E
21
ST-M
UTE
DI DO CLK CE
MUT
ING
3
TUNE
D
2
STER
EO
TUNE
DST
EREO
R-CH
L-CH
R-CH
L-CH
R-CH R-CH
HP901(PB)
HRPE901(REC/PB/ERASE)
13
2
4
R-CH R-CH
REC/PB SWITCHINGIC302
R-CH
BIAS OSCT301
BIASTRAP
REC BIASSWITCH
Q301, 307, 310TC +10V
BIAS OSCQ302, 303
TRIGGERPLUNGER DRIVE
(DECK B)Q391, 392
PM902TRIGGER PLUNGER
(DECK B)
51
A-TR
IG
TRIGGERPLUNGER DRIVE
(DECK A)Q393, 394
PM901TRIGGER PLUNGER
(DECK A)
52
B-TR
IG
90B-
SHUT
89
A-SH
UT
34
32BIN1
AIN1
15 13 12 14
28 27EQOUT1 26
PB-OUT1TAI1
MUTE
DECK A/B SELECT SWITCH,PB EQ AMPIC301 (1/2)
R-CH
23
REC-OUT1 REC-IN1
ALC1
REC EQ AMP, ALCIC301 (2/2)
21
R-CH
R-CH
68
ALC
C (Page 25)
TAPEL-CH
B (Page 25)
TUNERL-CH
D (Page 25)
RECL-CH
55 CAPM-CNT1
54 CAPM-H/L
65 BIAS
CAPSTANMOTOR DRIVE
Q396, 397MMM901
(CAPSTAN)
57
B-PL
AY
56
A-PL
AY
11
ALC
ON/O
FF
S1002(DECK B PLAY)
S1001(DECK A PLAY)
70
A-HA
LF
S1003(DECK A HALF)
91
B-HA
LF
S1006(DECK B HALF)
S1009(DECK B REC)
S1005(DECK A REC)
D +3.3V
SYSTEM CONTROLLER(CD MECHANISM CONTROL)
IC501 (2/4)
• SIGNAL PATH• R-ch is omitted due to same as L-ch.
: TUNER (FM/AM)
: TAPE PLAY (DECK A)
: REC
: TAPE PLAY (DECK B)
ROTATIONDETECT SENSOR
(DECK A)IC1001
ROTATIONDETECT SENSOR
(DECK B)IC1002
DO
CEMUTING
TUNEDSTEREO
DI
CLK
REC BIAS (L)(DECK B)
RV304
REC BIAS (R)(DECK B)
RV354
CAPSTAN MOTORCONTROL SWITCH
Q1001
Q395
TAPE SPEED(HIGH)
RV1001
TAPE SPEED(NORMAL)
RV1002
A/B
NORM
AL/H
IGH
SPEE
D
MUT
E ON
/OFF
REC
MUT
E ON
/OFF
A/B
NOR/
HIGH
REC
MUT
E
58 5361 67 66
A/B
NOR/
HIGH
REC-
MUT
EPB
-A/B
EQ-H
/N
TC-M
UTE
AMS-
IN
REC
MUT
E
EQ
ALC REC LEVEL (L)(DECK B)
RV301
69
TC-R
ELAY
+
MUTINGQ306
MUTING CONTROLSWITCH
Q389
BUFFERQ390, 398, 399
LOW-PASSFILTERIC303
24
ANTENNA
REC/PBSWITCHINGQ304, 305
D +3.3VD +3.3V
HCD-RG88
2525
7-3. BLOCK DIAGRAM – MAIN Section –
–
GEQ
DATA
GEQ
CLK
81 82
M891(FAN)
+–+–
+–+
FRONT SPEAKERIMPEDANCEUSE 6–16Ω
L
R
SURROUNDSPEAKER
IMPEDANCEUSE 24Ω
L
R
PHONESJ631
RY501
SYSTEM CONTROLLER(CD MECHANISM CONTROL)
IC501 (3/4)
R-ch is omitted due to same as L-ch.
CD L-CHA(Page 23)
TAPE L-CHC(Page 24)
TUNER L-CHB(Page 24)
T501
D507
D511
FAN MOTORDRIVE
Q891, 892
FAN MOTORON SWITCH
Q831
OVER LOADDETECT SWITCH
Q510
PROTECT SWITCHQ502
OVER LOADDETECT SWITCH
Q509
OVER LOADDETECT
Q501, 551 DC DETECTSWITCH
Q507, 508
M
HEADPHONE MUTINGQ812, 862
MUTING CONTROLSWITCH
Q861
RY502
+
+
+TH701
+D502
MUTINGQ103
MUTING CONTROLSWITCH
Q504, 505
STANDBYSWITCH
Q503, 504, 581
R-CH
D841
R-CH
R-CH
1815
1716
OUT1VOLIN1
14
2221
TOUT1 VOLUMECONTROL
SOUNDCONTROLCIRCUIT
INPUTSELECTSWITCH
+R-CH
8
+ R-CH
R-CHR-CH
INPUT SELECT SWITCH,TONE CONTROL,
ELECTRICAL VOLUMEIC102
IND1INB1
INA1INC1
64
3
2
INEX1
SWOU
T
BB B
1
BB A
1
RECB
1
DATA
CLOC
K
7
5
24
SAOU
T
MIC
19
+CPU
INTERFACE
R-CH
J750
L
R
MD/VIDEO(AUDIO) IN
R-CH
J601
J401
L
RGAMEINPUT
REC L-CHD(Page 24)
SPEANA(Page 26)
MIC
AUDIO
VIDEO OUT
VIDEO
J721 MIC AMPIC722 (1/2)
FEED BACKSWITCH
Q101
SIGNAL PATH: TUNER (FM/AM)
: CD PLAY
: TAPE PLAY
: MD/VIDEO (AUDIO) IN: GAME INPUT (AUDIO): GAME INPUT (VIDEO)
: REC
: MIC INPUT
SURROUNDSPEAKER PROTECT
RELAY DRIVEQ513
FRONT SPEAKERPROTECT
RELAY DRIVEQ512
–2
–1
POWER AMPIC501
RV722MIC LEVEL
MICCONTROL
Q721
A +10V
MIC AMPIC722 (2/2)
E
+ SUB WOOFEROUT
IMPEDANCEUSE 8Ω
TM801
RY801
SUB WOOFERPROTECT
RELAY DRIVEQ824
–1
–2
OVER LOADDETECT SWITCH
Q511
OVER LOADDETECT SWITCH
Q825
87FRONT-RELAY
97SW RELAY
80LINE-MUTE
86LINK-RELAY
78HP MUTE79HP-DETECT
88PROTECTOR
83STK-MUTE
TEMPERATUREDETECT SWITCH
Q505, 506
BUFFERIC901 (2/2)
LOW-PASSFILTER
IC901 (1/2)974 VOLUME
CONTROL2
8
LINE AMPIC903 (1/2)
FILTER AMPIC903 (2/2)
AGCQ905
MUTINGQ999 OVER LOAD
DETECTQ1004, 1054
STANDBYSWITCH
Q1001-1003
LINE AMP,ELECTRICAL VOLUME
IC902
SUB WOOFER AMPIC502 (1/2)
SUB WOOFER AMPIC502 (2/2)
1AD-KEY
7SW-SOLID-LED
5SW-LINK-LED
94 SW-AD-KEY
59 SW-ON-LED
71 SW-LINK-LED
72SW-MATRIX-SURR-1-LEDSW-MATRIX-SURR-2-LED60
4SW-MTRX-SURR-LED
6SW-WIDE-LED
2VOLUME
CN101
(TO SS-WGV8)SYSTEM CONTROL
HCD-RG88
2626
FL601FLUORESCENT
INDICATOR TUBE
1 –
10, 1
2 –
22,
24 –
41,
43,
44
P1 –
P41
1G –
15G
100
– 86
17 –
12
67 –
72
64 –
66
F01
– F0
6
BPF0
– B
PF5
4 LINE IN
11L+R
BAND-PASSFILTERIC602
73 ALL-BAND6 REC IN
80 VOLUME-A79 VOLUME-B
ROTARYENCODER
S748VOLUME
X(Page 25) ESPEANA
X6014MHz
83 X1
82 X0
52 –
59,
74
LED-TAPE,LED-TUNER,
LED-MD-VIDEO,LED-CD,
LED-GAME,LED-DISC1,LED-DISC2,LED-DISC3,
LED-REC
LED DRIVEQ601 – 605,
Q791 – 793, 795
D604 – 608,D791 – 793, 795
D794
KEY0
– K
EY2
S751, 752, 754 – 762,S765 – 780, 782 – 792
60I2C-DATA61I2C-CLOCK77RESET
30 IIC-DATA29 IIC-CLK41 GC-RESET
74 POWER-KEY
73 DISPLAY-KEY
S749
S750DISPLAY
75 STBY-LED
4 SIRCS
X50216MHz
15 X-IN
13 X-OUT
X50132.768kHz
10 XC-IN
11 XC-OUT
38CD-POWER
SYSTEM CONTROLLER(CD MECHANISM CONTROL)
IC501 (4/4)
84STBY-RELAY
12RESET
20AC-CUT
B+ SWITCHQ911, 912
RECTD906 – 909
RECTD914 – 917
CD +3.3V+3.3V
REGULATORQ102
+5VREGULATOR
IC911
M +9V
M +7V
A +10VTC +10V
D920 – 922
D502 D504
D501 D503
+4VREGULATOR
IC951
+4VREGULATOR
IC971
D +4V
+9VREGULATOR
IC961
+10VREGULATOR
IC101
CD D+5VCD A+5V
RESET SIGNALGENERATOR
IC601 D505
RECTD918, 919, 923, 924
RECTD972 – 975
LED DRIVEQ794
T972SUB POWER
TRANSFORMER
RECTD541
RECTD543
+VL
–VL
+VH
–VH
– 33VREGULATOR
Q941
POWER ON/OFFRELAY DRIVE
Q971
– VGRECTD977
VF1
VF2
RY971
(E, Singapore)
(Mexican, Argentina)
AC IN
T910MAIN POWER
TRANSFORMER
RESETSWITCH
Q601
REMOTE CONTROLRECEIVER
IC603
TO FLUORESCENTINDICATOR TUBE
FL601
D +3.3V
EVER +4V
VOLTAGESELECTOR
S901
FLUORESCENTINDICATOR TUBE DRIVER,
KEY CONTROLIC601
7-4. BLOCK DIAGRAM – DISPLAY/KEY CONTROL/POWER SUPPLY Section –
HCD-RG88
2929
7-7. SCHEMATIC DIAGRAM – BD Board – • See page 28 for Waveforms. • See page 50 for IC Block Diagrams.
• Voltages and waveforms are dc with respect to groundunder no-signal conditions.no mark : CD PLAY
The components identified by mark 0 or dottedline with mark 0 are critical for safety.Replace only with part number specified.
AMAIN
BOARD (1/4)CN201
1
2
3
4
5
6
RV101
E-F BALANCE(1 TRACK JUMP)
TP(RFDC)
TP2(TEO)
TP(DVC)
680
220k
33kTP
(FEI)
TP(RFAC)
Q1012SB710A-RT1AUTOMATIC
POWER CONTROL
RF AMP,FOCUS/TRACKING
ERROR AMP
FOCUS/TRACKING COIL DRIVE,SPINDLE/SLED MOTOR DRIVE
TP(FEO)
DIGITAL SERVO PROCESSORDIGITAL SIGNAL PROCESSOR,
DIGITAL FILTER,D/A CONVERTER
Q1022SD1664-T100-QR+3.3V REGULATOR
DSP+5V (SW)
D-OUT
DSP-GND
L-CH
RF-GND
R-CH
RF+5V (SW)
X-RST
CD-DATA
CD-CLK
LD-ON
SQ-DATA
SQ-CLK
M-GND
M+7V (UNSW)
X-LAT
(Page 34)
HCD-RG88
3232
CMAIN BOARD (3/4)
CN304
[3.3] [3.3]
[∗] 2.9<<2.9>>
[1.5
]∗
<<∗
>>
(CAPSTAN)
CAPSTAN MOTORCONTROL SWITCH
TAPE SPEED(NORMAL)
TAPE SPEED(HIGH)
ROTATIONDETECT
SENSOR (DECK A)
ROTATIONDETECT
SENSOR (DECK B)
+3.3V
+3.3V
CAPM−
CAPM+
CAPMH/L
ATRGM+
TRGMGND
BTRGM+
S1001(DECK A PLAY)
S1002(DECK B PLAY)
S1003(DECK A HALF)
S1005(DECK A REC)
S1006(DECK B HALF)
S1009(DECK B REC)
C100133
10V
PM902(DECK B)
PM901(DECK A)
+3.3V
+3.3V
7-11. SCHEMATIC DIAGRAM – SW Board –
• Voltages are dc with respect to ground under no-signalconditions.[ ] : TAPE PLAY (DECK A) : TAPE PLAY (DECK B)⟨⟨ ⟩⟩ : REC
∗ : Impossible to measure
(Page 36)
HCD-RG88
3434
7-13. SCHEMATIC DIAGRAM – MAIN Board (1/4) –
• Voltages are dc with respect to ground under no-signal(detuned) conditions.no mark : TUNER (FM/AM)( ) : CD PLAY
C702
C140
C210 C209
C206
C207
C203
R204
R254
C189
R285
Q201
R284
C163
C161R151
R152
C1
59
C1
68
C1
55
C1
56
C1
53
C1
58
R153
C1
64
C1
65
R101
C1
09
C1
08
C1
06
C1
05
C1
18
C1
03
C1
50
C1
01
R105
C110
R103
C119
R104
R121
C121 D121
C190 R191 C157 R155 C705
Q103
Q153
R163
R165
CN702
C703
C704
R154
C175
D1
22
C115C114
Q251R159
R701
R751 C751 R752
R702C701
CN202
CN783
R150
C122
R122
R166 R164
C125
R116 R113
R114
R1
15
J750
R156 D841
R157
EPT901
Q151
Q101
IC102
FB701
FB751
C200
L201
C201
FB201CN201 C2
28
C2
26
C2
24
R224
R226
R228
C202
FB210
FB215
FB219
FB218
FB217
FB216
FB214
FB213
FB212
FB211
C212 C211
FB208
Q207
Q206
Q205
Q202
R208R206
R209
R2
07
IC201
J401
C752
R286
C113
R109
C104 R108
C205
FB203
FB204
FB2
20
Q204
Q203
R158C154
R212
R217
R219
C112
C162
C116C117
C180
R180
JW704
R190
R162
R102
C111
C1
60
2.2 50V
0.1
0.1 47010V
0.1
1000 6.3V
0.022
10k
10k
0.1
22k
2SC3661
470k
1050V
0.00682.2k
10k
0.0
22
10
50
V
10
50
V
10
50
V
10
50
V
0.0
22
10k
0.2
2
0.3
3
2.2k
0.0
22
0.0
22
10
50
V
10
50
V
10
50
V
10
50
V
10
50
V
10
01
6V
10k
0.047
10k
1050V
47k
1k
470p 1SS355
1050V 2.2k 0.47
50V 1M 0.1
2SC3661
2SC3661
1k
10k
11P
0.022
0.022
47k
4.7 50V
1S
S3
55
0.330.22
2SC366133k
1k
1k 220p 100k
100k220p
10P
2P
2.2k
470p
1k
10k47k
4.750V 10k 1k
47k
10
k
2P
100k 1SS355
4.7k
2SC1623
2SC1623
M61519FP
0.1
10010V
21P
0.0
1
0.0
04
7
0.4
7
2.2k
330k
100k
10006.3V
0.001 0.022
FN1F4M
FA1A4M
2SC1623
2SC1623
10k10k
10k
10
k
TOTX141
1P
2.250V
22k
1050V
33k
10 50V 1k
0.022
2SA812
2SA812
1k10 50V
0
0
0
150V
150V
10016V0.1
0.068
10k
2.2k
620
620
0.033
0.0
33
A2
A3
A4
A5
A6
A7
A8
B1
B2
B3
B4
B5
B6
B7
B8
C1
C2
C3
C4
C6
C7
C8
24
26
28
43
35
37
40
32
34
33
19
27
25
23
22
3
2
21
81
82
44
45
46
47
48
49
36
50
AA1
AA2
AA3
AA4
AA
1A
A2
AA
3A
A4
ZZ1
ZZ2
ZZ3
D.GND
D-OUT
3.3V
GM(V)-GND
GM(V)-SIG
D-0UT
R-CH
L-CH
M-GND
X-RST
X-LAT
SENS
SQ-CLK
SQ-DATA
SCOR
CD-DATA
CD-CLK
M+7V(UNSW)
PWM3
PWM2
PWM1
LD-ON
DSP-GND
RF-GND
DSP+5V(SW)
RF+5V(SW)
D.GND
TBL ADDRESS SW
BU UP/DOWN SW
MGND
M+7V
OPEN SW
CLOSE SW
D+3.3V
MTR CNT2(LOAD IN)
MTR CNT1(LOAD OUT)
ST-CLK
ST+10V
TUNED
ST-CE
STEREO
ST-L
A-GND
ST-R
ST-MUTE
ST-DOUT/MC-DIN
ST-DIN /MC-DOUT
(1/4)
MUTING
MUTING
(CHASSIS)
∗
AM
ANTENNATUNER
UNIT
FM
THE ASSEMBLED
BLOCK
∗SUPPLIED WITH
FEED BACK
SWITCH
FEED BACK
SWITCH
INPUT SELECT
SWITCH,
TONE CONTROL,
ELECTRICAL
VOLUME
MUTING
MUTING
Q206,207
MUTING CONTROL
SWITCH
OPTICAL
TRANSCEIVER
R
L
(AUDIO)IN
OPTICAL
VIDEO OUT
MD/VIDEO
CD DIGITAL OUT
Q202-205
LASER
DIODE ON
SWITCH
100µH
75Ω(Page 39)
(Page 29)
(Page 30)
(Page 36)
(Page 37)
(Page 35)
HCD-RG88
3535
7-14. SCHEMATIC DIAGRAM – MAIN Board (2/4) –
• Voltages are dc with respect to ground under no-signal(detuned) conditions.no mark : TUNER (FM/AM)
The components identified by mark 0 or dottedline with mark 0 are critical for safety.Replace only with part number specified.
R814
C783
CN891C892Q891
R891
R893
Q892
R921
CN781
CN901
R819
R869
R892R866
R816
R862
R864
R510
R865R863
R861
R508
R501
CN903
JW813JW815
Q504
Q505
C504
Q861
C861
Q862
Q812
C863
C813
TM801
M891
R825
JW901
JW902
Q825
Q824
D801
RY801
R803
1k
0.1
3P0.12SB1116
10k
2.2k
2SC2603
471W
10P
13P
6802W
6802W
4.7k56
56
10k
1k
470k
100k100k
1k
15k
68k
5P
FN1F4M
FA1A4M
150V
FN1F4M
4750V
2SC3661
2SC3661
4.7100V
4.7100V
3.3k
2SC1623
FA1L3Z
1SS355
270
A1
A2
A3
A4
A5
A6
A7
A8
D1
D2
D4
D5
D6
D7
D8
88
87
ZZ1
ZZ2
ZZ3
97
78
80
23
FAN+
FAN-
SP PROTECT IN
FAN DET
-B
R-IN
A-GND
SW PROTECT
HP-R
HP-L
POWER-GND
POWER-GND
L-IN
HP-R
HP-GND
HP-L
A+10V
MIC-SIG
GM(A)-R
GM(A)-GND
GM(A)-L
SW-
SW-
SW+
SW+
(2/4)
IMAGINARY_GND
-1
-2
SWITCH
DRIVE
SWITCH
MUTING
CONTROL
SWITCH
MUTING
CONTROL
SWITCH
MUTING
CONTROL
MUTING
HEADPHONE
MUTING
HEADPHONE
Q891,892
FAN MOTOR
DRIVE
(FAN)
MIC-AGND
HEADPHONE CONTROL
FRONT RELAY
DBFB FEEDBACK
SUB WOOFER OUT
OVER LOAD
DETECT
RELAY
PROTECT
SUB WOOFER
IMPEDANCE USE 8Ω
(Page 41)
(Page 34)
(Page 37)
(Page 43)
(Page 39)
HCD-RG88
3636
7-15. SCHEMATIC DIAGRAM – MAIN (3/4)/HEAD (A)/HEAD (B) Boards – • See page 28 for Waveforms.
The components identified by mark 0 or dottedline with mark 0 are critical for safety.Replace only with part number specified.
• Voltages and waveforms are dc with respect to groundunder no-signal conditions.[ ] : TAPE PLAY (DECK A) : TAPE PLAY (DECK B)⟨⟨ ⟩⟩ : REC
TP
31
1
R366
C312
R305R304
R316
R371
R374
R373
R377
R378
CN304
TP321
TP322
TP323
TP301
TP303
TP304
TP306
TP307
TP308
NO303
NO302
C321
C371
C326
C376
C335
C336
Q303
R3
45
C3
38
R3
46
C3
39
C3
40
C341 R347 C342
R328R317
Q310
Q307Q301
L351
C382
RV354
R382
C383 C381
Q305
Q304 R342R332
R329
C332
R351 C3
53
C3
55
R370R352C364 R354 RV351
IC303(2/2)
R313
R333 C316
C395
R398
IC303(1/2)
C398
C399 R397
C397
C315R315R327
R365 C365
R362
R334
CN301
C391 R314 C390
R393
RV304
C334 C384
Q302 C337
R375
C385
C331
L301
C333
R379 R392
R361 R391 R363 R399C363C362
Q392 Q394
R364R360
Q397
R369R368
R367
Q396
C356
R380C361
C351
C359
TP338
C310
C309
R311
R310
R312
R308
L302
R309
R306TP320
IC301
C301
R301
C303C305
C306
TP318TP325
RV301
C311
R330
R302
R394
Q390
Q398
Q399
R395
R388 R387
R390C396R396
Q395
Q393Q391
R344
T301
TP317
HP901
HRPE901 CN2
CN1
Q389
Q306
R320
C314
JR390
R355
C304
C354
TP
309
R343
C308C307
R307
3.3k
10 50V
47k2.2k
10k
47k
47k
1k
47k
75k
17P
8P
3P
390p
390p
390p
390p
0.01100V
2.250V
2SC2001
18
k
68
00
p
18
k
68
00
p
18
00
0p
1050V 3.3k 47
16V
2.2k10k
FA1A4M
2SA8122SC3624
27mH
0.00012
220k
8.2k
330p 0.01
FA1A4M
FN1F4M 2.2k8.2k
10k
0.00012
3.3k
0.1
15
0V
2.2k4.7k2200p 2.2k 47k
NJM4565M(TE2)
1k
2.2k 1
22p
2.2MNJM4565M(TE2)
0.01
0.01 15k
1050V
110k15k
10k 1
10k
100k
3P
10010V 1k 470
10V
4.7k
220k
27p 27p
2SC2001 15000p
75k
1050V
0.01
27mH
330p
10k 2.2k
2.2k 2.2k 2.2k 2.2k4700p4700p
FA1A4M FA1A4M
680680
FA1A4M
3.3k3.3k
47k
2SB1068
2.250V
22k1050V
0.01
4716V
10 50V
47 16V
100
100
100
100
4.7k
22k
HA12237
0.01
3.3k
0.11
50V
2.250V
47k
1050V
22k
4.7k
10k
FA1A4M
FA1A4M
2SC3624A
4.7k
22k 10k
10k2250V10k
FA1A4M
2SB11162SB1116
5.6
6P
3P
FA1A4M
FA1A4M
2.2k
2200p
47k
5.6
47016V10
50V
1M
B1
B2
B3
B4
B5
B6
B7
B8
E1
E2
E3
E4
E5
E6
E7
52
58
67
66
68
61
YY1
YY2
YY3
YY4
YY5
YY6
YY1
YY2
YY3
YY
3
YY
4
YY5
YY
5
YY
6
57
56
70
90
91
89
XX1
XX2
XX3
XX4
XX1 XX2 XX3 XX4
51 54 5569 65
53
L-PB
L-REC
R-PB
E-HOT
R-REC
L-PB
R-PB
CAPM+
AHALF
ASHUT
DGND
BSHUT
BMETAL
CAPM-
CAPMH/L
ATRGM+
BTRGM+
TRGMGND
BHALF
L
GND
R
GND
GND
GND
GND
EOU
T2
TA
I2
PB
-OU
T2
NC
REC
-IN
2
ALC
2
NC
REC
-OU
T2
A/B
VCC
GND
I-REF
TEST
REC
-OU
T1NC
ALC1
REC
-IN
1
NC
PB
-OU
T1
TA
I1
EQO
UT1PB-NF1B
AIN1
RIP
BIN1
GND
BIN2
NC
AIN2
RETNREC-
PB-NF2A
NF1APB- P
B-
EQ1
ALCDET
REC MUTEON/OFF
ON/OFFMUTE
SPEEDNORMAL/HIGH
OFF
PB
-EQ
2
NF2
BP
B-
ALC ON/S
W.R
2
GN
D
SW
.P2
CO
NT.
SW
.P1
GN
D
SW
.R1
VCC
GN
D
(3/4)
Q396,397
CAPSTAN MOTOR
DRIVE
INVERTER
Q393,394
TRIGGER PLUNGER
DRIVE(DECK A)
TRIGGER PLUNGER
Q391,392
DRIVE(DECK B)
Q301,307,310
REC BIAS
SWITCH
Q302,303
BIAS OSC
BIAS OSC
/70A120
BPLAY.SW
/70120B
APLAY.SW
(FOR ADJUSTMENT)
L-CH
R-CH
TAPE
1
7
ERASE
R-CH
L-CH
(REC/PB/ERASE)
(DECK B)
(DECK A)
(PB)
MECHANISM DECK
(TCM-230AWR41) (CHASSIS)
(CHASSIS)
MUTING CONTROL
SWITCH
MUTING
BUFFER
BUFFER
BUFFER
REC/PB SWITCHING
REC/PB SWITCHING
Q304,305
DECK A/B SELECT
SWITCH,
REC/PB EQ AMP,
ALC
LOW-PASS
FILTER
+3.3V
BLOCK
µPC1330H
100µH
IC301
(Page 34)
(Page 32)
(Page 37)
HCD-RG88
3737
7-16. SCHEMATIC DIAGRAM – MAIN Board (4/4) – • See page 28 for Waveforms.
• Voltages and waveforms are dc with respect to groundunder no-signal (detuned) conditions.no mark : TUNER (FM/AM)( ) : CD PLAY
[ ] : TAPE PLAY (DECK A) : TAPE PLAY (DECK B)⟨⟨ ⟩⟩ : REC
∗ : Impossible to measure
C920
D907 D906
D908D909
C919
C918
D916D917
D915 D914
C917
C916
D919D924
D923 D918
C914
C915
C910
R917
C911
IC951
C925 C951
IC961
C961
IC101
C922 C921
C909
D921
TP901
D509
D508
D501
D502
D503
D504
D505
D601
C434
C432
R532
C433
R541
R549
R448
R447
R446
R544
R545
R543
C546
R540
R432
R433
R434
R535
R536
R537
TP431
TP439
TP530
TP
52
9
R530
R529
R4
19
R4
20
R5
17
C516
C416
R575
C512
X502
R513
X5
01
C5
11
C510
R509
R5
11
R4
30
R4
29
R503R502
C502
TP437
TP485R584
R591
R590
R589
R585 R588
TP
46
3
C564
C562
CN401
C962
C932
CN501
D9
22
D9
20
C601
IC601
C602R604D603
R603 C603
C530
R602 D602
R601
TP514
R548
R5
47
R546
R579
TP516
CN904
R918
R919
Q912
IC911
JW951
C596
FB599
Q601
C598
C498
R593
FB516
R592
FB562
R583
R488
R574
R573
R580
Q911
CN902
R916
R999C907
Q999
R997
R998
C908
C923
IC902
C930
C903
R907
C906
C935
R906
R901
C905R913R914R912
D902
D901
R915
Q905
R920
C931
R908
C9
04
R902
C901
C902
R903
IC903(1/2)
IC901(2/2)
IC901(1/2)
IC903(2/2)
R904
R905
C928
C913
C926
C933
C912
R4
60
R4
59
R4
71
R4
72
R4
70
R5
57
R5
56
IC501R594
R493
R597
R494
R492
CN101
330025V
11ES2N 11ES2N
11ES2N11ES2N
0.1
0.1
11ES2N11ES2N
11ES2N 11ES2N
0.1
0.1
11ES2N11ES2N
11ES2N 11ES2N
0.1
0.1
220016V
2.2k
0.1
47010V 0.1
AN7809
0.1
M5F7810L
47016V 0.1
100025V
11ES2N
1SS355
1SS355
1SS355
1SS355
1SS355
1SS355
1SS355
1SS355
47p
47p
47k
47p
10k
100
100
100
100
100
100
100
0.001
100
100
100
470
470
100
470
10k
10k
0 4.7
k
10
k
22006.3V
0.1
10k
0.1
16MHz
0
32.7
68K
Hz
15
p
22p
10k
33
0k
10
0
10
0
10k10k
0.022
100
100
100
100
10k 10k
0.01
10010V
30P
47010V
47010V
4P
11
ES
2N
11
ES
2N
1050V
M62703ML
0.147k1SS355
47k 0.1
100p
4.7k 1SS355
220
10k
10
k
10k
10k
2P
2.2k
2.7k
FA1A4M
0.1
2SC1623
1050V
0.1
1k
4.7k
100
100
10k
10k
10k
RT1P137L-TP
13P
6.8k
2.2k2.250V
2SC3661
10k
4.7k
2216V
10016V
M5282FP-T1
1050V
1006.3V
5.6k
15
0V
10016V
2.2k
1k
2.2 50V4.7k4.7k4.7k
UDZ-TE-17-2.2B
1SS355
1M
2SK246
47k
0.01
0
22
p
12k
0.1
0.1
100k
NJM4565M(TE2)
NJM4565M(TE2)
NJM4565M(TE2)
NJM4565M(TE2)
6.8k
6.8k
0.1
0.1
1050V
1050V
22006.3V
10
0
10
010
0
10
0
10
0
10
0
10
0
M30620MCN-A09FP1k
100
10k
4.7k
C1
C2
C3
C4
C5
C6
C7
C8
D1
D2
D4
D5
D6
D7
D8
E1
E2
E3
E4
E5
E6
E7
53
58
65
66
67
68
69
52
51
54
55
70
90
91
89
56
57
24
26
43
35
37
40
33
32
19
44
45
46
47
48
49
5 6 7
81
28
34
61
83
84
86
87
77
76
29
30
50
78
94
97
38
88
60
72
71
59
60
71
72
59
80
82
94
4
73
74
75
41
36
84
86
83
27
21
22
25
23
32
RR1
RR2
RR3
RR4
RR1
RR2
RR3
RR3
RR4
RR4
41
29
30
4
73
74
75
38
*
IIC-DATA
SPEANA
IIC-CLK
SIRCS
KEY INT DISPLAY
KEY INT POWER
POWER LED
D+4V
D+4V
EVER+4V
EVER+4V
EVER+4V
VF(1)
VF(1)
VF(2)
VF(2)
VG
VG
A+10V
A+10V
A+10V
GC+4V
GC-RESET
D-GND
D-GND
D-GND
D-GND
A+10V
SPEANA
SPEANA
VOLUME
D+4V
DGND
AGND
SW-SOLID-LED
SW-WIDE-LED
SW-LINK-LED
SW-MTRX-SURR-LED
AD-KEY
VF(1)
VF(2)
FAN ON
-VG
AC4(1)
AC4(2)
AC3(1)
AC3(2)
EVER+4V
D-GND
STK MUTE
AGND
SW-IN
IIC-CLK
IIC-DATA
D+3.3V
D-GND
X-O
UT
VS
S
X-I
N
VC
C
NM
I
SC
OR
IIC
-CL
K
SQ-CLK
CD-DATA
CD-CLK
ST
-MU
TE
ST
-CE
ST
-DO
UT
ST
-DIN
ST
-CL
K
XRST
VC
C
VS
S
TC
-MU
TE
EQ
-H/N
PB
-A/B
MODEL-IN
AVSS
VREF
AVCC
TC
-RE
LA
Y
XC
-IN
XC
-O
UT
GN
D
GN
D
RE
C-M
UT
EBU UP/DOWN-SW
A-TRIG
B-T
RIG
CA
PM
-H/L
A-SHUT
A-H
AL
F
B-SHUT
A-P
LA
Y
B-HALF
B-P
LA
Y
CLOCK-OUT
TXD1
GEQ
SIR
CS
SU
R1
SU
R2
SU
R3
BU
-PW
M3
BU
-PW
M2
BU
-PW
M1
CD-POWER
SENS
OPEN-SW
CLOSE-SWSTBY-RELAY
FRONT-RELAY
LOAD-OUT
LOAD-IN
ON
/OFF
AU
DIO
OU
T
LD-ON
SQ-DATA-IN
TBL-SENSCA
PM
-CN
T1
SO
FT-T
ES
T
DIS
PLA
Y-K
EY
PO
WER
-KEY
STB
Y-L
ED
PROTECTOR
AM
S-I
N
TU
NE
D
STER
EO
DEST-IN
CD-MUTE
GA
ME
/VC
DV
IDE
O-O
UT
HP
-MU
TE
HP
-DE
TE
CT
SW
-LIN
K-L
ED
MUTE
DATA
LINK-RELAY
SW-AD-KEY
SW-RELAY
NO
-US
E
NO
-US
E
NO-USE
USE
NO-
DATA
IIC-
(4/4)
STBY RELAY
LINK RELAY
(FOR CHECK)
SYSTEM
CONTROL
(1/2)
(2/2)
BUFFER
LOW-PASS FILTER
(1/2)
LINE AMP
(2/2)
FILTER AMP
MUTING
B+ SWITCH
B+ SWITCH
AGC
+5V REGULATOR
+4V REGULATOR
GIO
GIO
GIO
+9V REGULATOR
GIO
+10V REGULATOR
GIO
RESET SIGNAL
GENERATOR
RESET
SWITCH
SYSTEM CONTROLLER
(CD MECHANISM CONTROL)NO-USE
RES
ET
AC
-CU
T
XLT
GC-RESET
SW
-MA
TR
IX-S
UR
R-2
-LE
D
BIA
S
GEQ CLK
NO-USE
ELECTRICAL VOLUME
LINE AMP,S
W-O
N-L
ED
AL
C
SW
-MA
TR
IX-S
UR
R-1
-LE
DLINE-
STK-MUTE
* R493
0
4.7k (E,MX,AR)
(SP)
µPC7805A
µPC3504
(Page 36)
(Page 34) (Page 35)
(Page 45)
(Page 41)
(Page 43)
HCD-RG88
3939
7-18. SCHEMATIC DIAGRAM – GAME IN Board –
• Voltages are dc with respect to ground under no-signal(detuned) conditions.no mark : TUNER (FM/AM)
JW611
C606
C604
JW610
C636
JW609
JW603
EP701
C747 IC722(1/2)C741
C719
C736
C737
IC722(2/2)C738
C718 C717
Q721
CLP702
EP703
JW613
TP732
TP731
TP733
TP734
TP735
TP736
TP737
TP738
TP739
TP741
TP742
NO606
NO607
J721
J631
C631
C630
R604
R605
R602
R603
C634
C716
C749
R743 C744
R742
R739
R738
R737
C743 R736
C740
R735R734 R744
C715
RV722
R721
R722R746
C635
J601
R745C7
48R740
2.250V
2.250V
0.1
2.250V
NJM4565D0.1550V
2.250V
1050V
1050V
NJM4565D2.250V
10010V
10010V
2SC2785TP
10P
2P
0.001
0.001
100k
100k
1k
1k
0.001
47p
0.1
10k 0.001
1k
100k
1k
22k
470p 10k
100p
180k100 100k
47p
50k
12k
18k1k
0.001
3P
100
0.0
22
2.2k
HP-L
HP-R
HEADPHONE CONTROL
A+10V
HP-GND
GM(A)-L
GM(A)-R
GM(A)-GND
GM(V)-SIG
GM(V)-GND
(CHASSIS)
(CHASSIS)
(CHASSIS)
MIC
L
R
AUDIO
VIDEO
GAME
INPUT
PHONES
MIC-AGND
MIC-SIG
MIC AMP
3
2
4
1
6
57
8
LEVEL
MIC
MIC
CONTROL
(Page 34)
(Page 35)
HCD-RG88
4141
NO1001
Q1002
R1068
R1069
R1023
C1060
C1059
C1009
C1010
D1003R1070
D1052
R1066
R1067
Q1054
Q1004
R1020R1014
R1015
R1018
R1019
R1017
Q1003
R1013
R1012
R1010 C1007
R1054
R1009
D1001R1007
C1006R1008C1005
Q1001
R1006R1005
R1011
R1004
R1022
C1008C1001
C1018
IC502(2/2)
C1002
C1004
R1003R1002
R1001
C1052
R1053R1051
C1054C1051
R1052
C1017
NO1002
IC502(1/2)
R1016
D1002
R1021
R1071
C1003
C1053
2P
2SA988
0.225W
0.225W
47k
0.047
0.047
0.047
0.047
1SS133T100k
1SS133T
15k
1k
2SC2785
2SC2785
10Ok10k
10k
0.225W
0.225W
1k
2SC2785
22k
2.2k
47k 4750V
47k
100
1SS133T22k
10050V33k22
100V
2SC2785
110k
100k
47k
100
22100V
4.750V
10000p
STK-402-120S
220p
10010V
1.5k47k
1k
220p
1.5k1k
10010V
4.750V
47k
4.750V
13P
STK-402-120S
15k
1SS133T
101/2W
101/2W
0.33
0.01
AGND
OVERLOAD_DET
SW_MUTE
VL+
IMAGINARY_GND
VL-
SW+
SW-
RCC_GND
SW-
SW+
SW+
SW-
IMAGINARY_GND
OVER LOAD
DETECT
OVER LOAD
DETECT
STANDBY
SWITCH
STANDBY
SWITCH
STANDBY
SWITCH
SUB WOOFER AMP
SW-IN
7-20. SCHEMATIC DIAGRAM – SUB WOOFER Board –
• Voltages are dc with respect to ground under no-signal(detuned) conditions.no mark : TUNER (FM/AM)
The components identified by mark 0 or dottedline with mark 0 are critical for safety.Replace only with part number specified.
(Page 37)
(Page 35)
(Page 43)
HCD-RG88
4343
7-22. SCHEMATIC DIAGRAM – POWER/SENSOR Boards –
• Voltages are dc with respect to ground under no-signal(detuned) conditions.no mark : TUNER (FM/AM)
The components identified by mark 0 or dottedline with mark 0 are critical for safety.Replace only with part number specified.
R533
R515
R514
R531
C942D941
R945R942R943
C525C523C524
JW567
JW566
C544
C545
EP501
D5
11
D5
07
D5
08
D509
R548R547
R545
JW517
Q510
Q502
D506
C516R544
R543
R537
Q507Q508
D502
R528
R532R521
Q505
R522
Q506
R592
R542
C526
Q513
R5
46
C514
R538C515
Q509
C507
C508
R509
R559
C558
C557
R507
R557
R505
R555
R516
R517
Q504
R513
R519
R582
R581
R561
C559
R518R512
Q581
Q503
C504
C554
R502
C502
R552
R551C551
R501C501
C552
C509
C512
C943
CN503
NO501
NO504
CN502
NO505CN701
Q941
D543
D510
JW563
JW604
TM501
R527
RY502
RY501R529 R530
Q512
Q501
D551
D501
D581
R511
Q551
Q831
JW573
CN1072
TH701
EP502
JW561
Q511
C541
C513
C5
91
R591
R541C546
C596
R523
R506
R556
R558
R560
IC501(1/2)
IC501(2/2)
R524
D503
C553
D504
D541
R565R564
R540
R539
R526R525
R520
R510
R508
R503
R553
R554
C5
42
C592
C517
C581
47k
22k
2.2k
220
1050V
MTZJ-T-72-33D
8.2k8.2k1k
0.010.010.01
0.1100V
0.1100V
1S
S1
33
T
1S
S1
33
T
1S
S1
33
T
1S
S1
33
T
47k47k
4.7k
2SC2785
2SC2785
1SS133T
10010V10k
68k
10k
2SC27852SC2785
1SS133T
47k
560k100k
2SC2785
100k
2SC2785
100k
100k
1050V
BA1F4M
22
k
10010V
47k2.250V
2SA1175
0.068
0.068
101/2W
101/2W
0.068
0.068
100k
100k
1k
1k
10k
10k
2SC1841
33k
68k
33k
33k
100
22100V
33k1
2SC1841
2SA988TP
10010V
10010V
47k
470p
47k
1k4.750V
1k4.750V
470p
22100V
0.01
10050V
13P
13P
3P
13P
2P2P
2SB1375
D5SBA20
1SS133T
56k 22k 22k
BA1F4M
2SC1841
1SS133T
1SS133T
1SS133T
100
2SC1841
2SC2785
8P
2SC2785
0.1
0.01
0.1
100k
100k2200100V
2200100V
82k
22k
22k
0.15W
0.15W
STK412-150
STK412-150
3.3k1W
MTZJ-T-72-18C
220p
MTZJ-T-72-18C
RBV-2506
4.7k4.7k
6802W
6802W
56k47k
3.3k1W
0.15W
0.15W
220
220
47k
22
00
42
V
220042V
1050V
2250V
AA1
AA2
AA3
AA4
AA5
AA6
AA7
AA8
AA1
AA2
AA3
AA4
AA5
AA6
AA7
AA8
VH
VH
GND
GND
VL
VL
AC3
AC3
AC4
AC4
VP
VF
VF
STBY RELAY
D-GND
R-IN
A-GND
L-IN
STK MUTE
STBY RELAY
D-GND
-B
FAN ON
DBFB FEEDBACK
FAN DET
SP PROTECT IN
FRONT RELAY
OVERLOAD_DET
SW_MUTE
VL+
IMAGINARY_GND
VL-
SW+
SW-
SW PROTECT
RCC_GND
LINK RELAY
-VG
EVER+4V
VF(1)
VF(2)
AC4(1)
AC4(2)
AC3(1)
AC3(2)
-33V
REGULATOR
(CHASSIS)
-1
-2
R
L
R
L
FRONT SPEAKER
FRONT SPEAKER
DRIVE
PROTECT RELAY
-1
-2
PROTECT
SWITCH
OVER LOAD
DETECT SWITCH
Q507,508
DC DETECT SWITCH
OVER LOAD
DETECTSWITCH
STANDBY
SWITCH
STANDBY
SWITCH
STANDBY
POWER AMP
OVER LOAD
DETECTDETECT SWITCH
Q505,506
TEMPERATURE
FAN MOTOR
ON SWITCH
SURROUND
SPEAKER
PROTECT
RELAY
DRIVE
(CHASSIS)
POWER-GND
POWER-GND
HP-R
HP-L
2
4
3
1
2
41
3
EVER+4V
Q509-511
IMPEDANCE USE 6 − 16Ω
IMPEDANCE USE 24ΩSURROUND SPEAKER
C503220p
47kR504
(Page 41)
(Page 36)
(Page 49)
(Page 49)
(Page 37)
HCD-RG88
4545
7-24. SCHEMATIC DIAGRAM – PANEL/CD OPEN/CD SWITCH Boards – • See page 28 for Waveform. • See page 50 for IC Block Diagram.
• Voltages and waveform are dc with respect to ground un-der no-signal (detuned) conditions.no mark : TUNER (FM/AM)
FL601
CN601
TP
60
2
TP
60
3
TP
60
4
TP
605
TP
606
TP
60
7
TP
608
TP
609
TP
61
0
TP
61
1
TP
61
2
TP
61
3
TP
61
4
TP
61
5
TP
61
6
TP
61
7
TP
61
8
TP
61
9
TP
62
0
TP
62
1
TP
62
2
TP
62
3
TP
62
4
TP
62
5
TP
62
6
TP
62
7
TP
62
8
TP
62
9
TP
630
TP
63
1
TP
63
2
TP
63
3
TP
63
4
TP
635
TP
636
TP
63
7
TP
63
8
TP
639
TP
64
0
TP
64
1
TP
64
2
TP
64
3
TP
64
4
TP
64
5
TP
64
6
TP
64
7
TP
64
8
TP
64
9
TP
650
TP
65
1
TP
65
2
TP
65
3
TP
65
4
TP
655
TP
656
TP
65
7
TP
658
TP674
TP675
TP676
TP677
TP678
TP679
TP680
TP701
TP702
TP703
TP704
TP705
TP706
TP707
TP708
TP709
TP710
TP711
TP712
TP713
TP714
TP715
TP716
TP717
TP718
TP719
TP720
TP721
TP722
TP723
TP724
TP725
TP726
TP727
TP728
TP729
TP730
TP681
IC602
C608
C610
D614
Q601Q602Q603
X601 NO604
CNS601
Q604Q605Q795Q794
D605D608
C622
C652
TP601
NO602
C619
C653
S749
D612
D792 D791D793
S788 S789 S790 S791
NO603
R618
C611 C612 R681 R680
FB6
03
R749
R795
D604D606D607D795
R660
C620 C618
R613
C609 R614
R611
R606
R607
R8
21
R8
22
R8
23
R8
24
R8
20
R8
19
R8
25
R646
R645
R647
D610
R792
S792
R800 R799 R798
R788 R789 R790 R791
R751
S751
R779
R662
R6
63
R661
R6
55
R6
56
C712
R657
R658
R659
R654
R652
R653
R8
17
R8
18
C623C6
29
C6
28
C6
27
C6
26
C6
25
C6
24
C711
C651
S787
S786
S785
S784
S782
S783
S779
R780
R781
R782
R783
R784
R785
R786
R787
Q791Q792Q793
R601 C613
R626R627R628R629R630
D794
R612
R682
S780
JW619
JW620
JW621
JW622
C710
IC601
R801
30P
BA3830F-E2
1050V
1050V
IIES2
BA1A4MBA1A4MBA1A4M
4MHz 8P
8P
BA1A4MBA1A4MBA1A4MBA1A4M
SEL5923ASEL5923A
4.750V
1050V
6P
4710V
1050V
IIES2
SEL5923A SEL5923ASEL5923A
6P
10k
1050V 0.01 680 330
270
150
SEL5923ASEL5923ASEL5923ASLR325VC
1M
0.01 0.01
27k
0.0033
33k
47k
270k
270k
68
0
68
0
68
0
68
0
68
0
39
0
39
0
100
10k
100
MTZJ-T-72-5.1B
68k
150 150 150
10k 15k 22k 33k
470
470
10k
10
k
10k
10
0
10
0
0.01
15k
15k
15k
100
10k
10k
1k
1k
0.001
0.0
1
0.0
1
0.0
1
0.0
1
0.0
1
0.0
1
0.01
0.1
680
1k
1.5k
1.5k
2.2k
3.3k
4.7k
6.8k
BA1A4MBA1A4MBA1A4M
82k 6.850V
330330330330330
SELS5223S
22k
22k
0.01
MB90M407PF-G-119-BND
220
65
48
60
61
73
72
69
67
70
71
72
73
68
12
13
14
15
16
17
18
19
20
21
22
24
25
26
27
28
29
30
10 9 8 7 6 5 4 3 2 1
100
99
98
97
96
95
94
71
70
69
68
67
79
80
77
77
93
86
87
88
89
90
91
92
52
53
54
55
56
74
2345678910
12
13
14
15
16
17
18
19
20
21
22
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
44
88
87
86
89
90
91
92
93
94
95
96
97
98
99
100
52 53555456
57
58
59
31
32
33
34
35
36
37
38
39
40
41
43
44
61
60
1
49 51
43
48
74
64
65
79
80
66
64
56
54
53
52
51
49
AA1
AA2
AA3
AA1 AA2 AA3
57
58
59 66
F1
F1
NP
NP
NP
NP
F2
F2
F2
NP
NP
NP
NP
F1
VG
VCC-CPU
VSS-CPU
AV
SS
AV
CC
MD
2
VKK
MD0
VS
S-I
O
VD
D-F
IPVG
A+10V
A+10V
A+10V
D+4V
D+4V
GC+4VP1
P2
P3
P4
P5
P6
P7
P8
P9
P1
0
P1
1
P12
P1
3
P14
P1
5
P1
6
P1
7
P1
8
P1
9
P20
P21
P22
P23
P24
P25
P26
P27
P28
P29
P30
P31
P32
P33
P34
P35
P36
P37
P38
P39
P40
VSS-IO
P41
P41
P40
P39
P38
P37
P36
P35
P34
P33
P32
P31
P30
P29
P28
P27
P26
P25
P24
P23
P22
P21
P20
P1
9
P1
8
P1
7
P1
6
P1
5
P14
P1
3
P12
P1
1
P1
0
P9
P8
P7
P6
P5
P4
P3
P2
P1
G1
G2
G3
G4
G5
G6
G7
G8
G9
G1
0
G1
1
G1
2
G1
3
G1
4
G1
5
FLUORESCENT INDICATOR TUBE
DISC 1 LED
DISC 2 LED
DISC 3 LED
GC DGND
KEY 2
+4V
SPEANA
SIRCS
KEY INT DISPLAY
POWER LED
VF(1)
IIC-DATA
IIC-CLK
KEY INT POWER
VF(2)
VF(1)
VF(2)
A+10V
SPEANA
SPEANA
DISC 1 LED
DISC 2 LED
DISC 3 LED
GC DGND
KEY 2
+4V
VOL 1B
VOL 1A
KEY 1
KEY INT DISPLAY
KEY 0
DGND
EVER +4V
SIRCS
MD2
INT0
INT1
SI0
S00
VCC-CPU
GC DGND
MD0
F01
F02
F03
F04
L+R
VCC
BIAS
GND
RST.C
RST
R01
R02
F06
F05
LINENF
INLINE
NFREC
INREC
BAND-PASS
FILTERD-GND
D-GND
D-GND
D-GND
EVER+4V
EVER+4V
EVER+4V
GC-RESET
(FOR CHECK)
TUNER/BANDCDTAPE A/BMD(VIDEO)GAMEREC
PAUSE/START
LED DRIVE LED DRIVE LED DRIVE LED DRIVE LED DRIVE LED DRIVE LED DRIVE
OPEN/CLOSE
EX-CHANGE
DISC SKIP
DISC 3DISC 1 DISC 2DISC 1DISC 2DISC 3
LED DRIVE LED DRIVE LED DRIVE
REC
PAUSE/START
FLUORESCENT INDICATOR TUBE DRIVER,
KEY CONTROL
TUNER/BAND
CD
TAPE A/B
MD(VIDEO)
GAME
GAME MIXING
SURROUND
SPEAKER MODE
HI-DUB
1G
2G
15G
3G
4G
5G
6G
7G
8G
9G
10G
11G
12G
13G
14G
NO-USE
X1
X0
SO
FT-T
ES
T
RES
ET
NO
-US
E
NO
-US
E
LED
-REC
AL
L-B
AN
D
BP
F5
BP
F0
BP
F1
BP
F2
BP
F3
BP
F4
KEY
2
KEY
1
KE
Y0
I2C
-CL
OC
K
I2C
-DA
TA
LE
D-D
ISC
3
LE
D-D
ISC
1
LE
D-D
ISC
2
LE
D-G
AM
E
LE
D-C
D
LED
-MD
-VID
EO
LE
D-T
UN
ER
LE
D-T
AP
E
MD1
NO-USE
NO-USE
NO-USE
CD SYNC
VOLUME-AVO
LU
ME
-B
(Page 37)
(Page 47)
HCD-RG88
4747
7-26. SCHEMATIC DIAGRAM – PAD SWITCH/VOL Boards –
• Voltages are dc with respect to ground under no-signal(detuned) conditions.no mark : TUNER (FM/AM)
NO605
TP682
S776 S777S775S774S773S772S771S770S769S768S767S766S765
S754 S755 S757 S758 S759 S760 S761 S762
CN606 CN607
S750
D613
C615
S748
R625
C614
R750
R765 R766 R767 R768 R769 R770 R771 R772 R773 R774 R775 R776 R777 R778
S778
S752S756
R752 R753 R755 R756 R757 R758 R759 R760 R761 R762
IC603
R754
C752C751
8P
4P 4P
1SS133T-72
4710V
47
0.001
270
470 680 1k 1.5k 1.5k 2.2k 3.3k 4.7k 6.8k 10k 15k 22k 33k 68k
680 1k 1.5k 2.2k 3.3k 4.7k 6.8k 10k 15k 22k
NJL74H400A
1.5k
0.10.1
VOL 1A
VOL 1B
GC DGND
KEY 1
VOL 1B
VOL 1A
KEY 1
KEY INT DISPLAY
KEY 0
SIRCS
DGND
EVER +4V
VOL 1A
VOL 1B
GC DGND
KEY 1
VOLUME
(ROTARY ENCODER)
DISPLAY
DIMMER FM MODE
REPEAT
SPECTRUM
TUNER MEMORY
PLAY MODE
S766
S765 S767 S769
S768 S770
GROOVE
S771
S772
S773
EFFECT
ON/OFF
S774 S775
ENTER
S776
S777
MOVIE EQGAME EQMUSIC EQ
S778
SURROUND
P FILE
- +
REMOTE CONTROL
RECEIVER
DIRECTION
EDIT
(Page 45)
HCD-RG88
4949
7-28. SCHEMATIC DIAGRAM – MAIN TRANS/SUB-TRANS Boards –
• Voltages are dc with respect to ground under no-signal(detuned) conditions.no mark : TUNER (FM/AM)
The components identified by mark 0 or dottedline with mark 0 are critical for safety.Replace only with part number specified.
TP1
TP2
TP3
TP4
TP5
TP6
TP7
TP8
TP9
TP10
TP11
TP12
TP13D977
JW972
JW971
R974
R975
CN976
C975
D974D975
D973 D972
C976
C973C978
C977
JW984
JW986
JW987
CN997
T972
T910
R952
R941
Q971
C971
D971
CN974
RY971
S901
D976
F974
F975
F976
F977
F971
JW975
JW974
JW973
CN973
JW993JW
990
NO971
R951
C941
R953
R944
IC971
11ES2
100k
10k
3P
220016V
11ES211ES2
11ES2 11ES2
0.1
10016V0.1
0.1
13P
0.15
1
2SC2785
10000p250V
1SS133T
2P
T6.3AL250V
T6.3AL250V
T8AL250V
T8AL250V
T5AL250V
0.1
10063V
∗
∗
STBY RELAY
D-GND
N
220
120
AC3
AC4
AC4
VF
VF
VL
VL
AC3
VH
GND
GND
VH
230-240
220
120
230-240
N
230-240
220
230-240
220
120
120
VP
TRANSFORMER
TRANSFORMER
SUB POWER
MAIN POWER
∗ NOT REPLACEABLE:
BUILT IN TRANSFORMER
GO I
+4V REGULATOR
RELAY DRIVE
POWER ON/OFF
AC IN
220V
VOLTAGE SELECTOR120V
230-240V
-1
-2
(E,SP)
(MX)
(MX
)(A
R)
(E,SP,AR)
(E,SP)
∗4P
2P (MX,AR)
CN973
(E,SP)
(E,SP)
(MX,AR)
(E,SP)
(AR)
(E,S
P,A
R)
(MX)
EVER+4V
(E,SP)
NO971∗4P
2P (MX,AR)
(E,SP)
µPC3504AHF
(Page 43)
(Page 43)