A32
FMJ A32, P35 & P35/3Amplifi ers
Service Manual
ARCAMARCAM
Issue 1.0
Contents List
! Phono board L870
o Circuit description o Component overlay o Parts list o Circuit diagrams
! Amplifier & PSU board L882
o Circuit description o Component overlay o Parts list o Circuit diagrams
! Display board L928
o Component overlay o Parts list o Circuit diagrams
! Preamplifier board L937
o Circuit description o Component overlay o Parts list o Circuit diagrams
! 3rd Channel Amplifier board L911 o Component overlay o Parts list o Circuit diagrams
! Transformer specifications o L914TX o L915TX
! General assembly
o A32 - Mechanical parts list o P35 - Mechanical parts list o P35/3 - Mechanical parts list
1 2 3 4 5 6 7 8
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FilenameECO No. DESCRIPTION OF CHANGE
G:\DATA\ECO\ECO AGENDA\01_1070 l870 A85 PHONO ISSUE2\L870_2.0.ddb - L870c1_2.0.PRJ
A & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PB
A85 PHONO STAGE - TOP LEVEL
Circuit Diagram
L870C1JBR23-Apr-2001INITIALS
Date Printed 1 3Sheet of
Notes:
1
EMC
SK1PHONO2HG
0V_SIG
0V_SIG
LEFT IN LEFT OUT
LEFT CHANNELL870C2_2.0.SCH
RIGHT IN RIGHT OUT
RIGHT CHANNELL870C3_2.0.SCH
12345678
SK2
AMPCT8
+15V
-15V
0V_HF0V_SIG
Q_1
Q_2
Q_3
Q_4
Q_5
Q_6
Q_7 Q_8
PCB
PCB1
L870PB_2
Update Box
EL1
UPDATE_BOX
C1100N CD
00_1051 JAG 22/3/01 PRODUCTION ISSUE 1
01_1070 JAG 17/4/01 updated pcb and scm 2
1 2 3 4 5 6 7 8
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B
C
D
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C
B
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G:\DATA\ECO\ECO AGENDA\01_1070 l870 A85 PHONO ISSUE2\L870_2.0.ddb - L870C2_2.0.SCH
A & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PB
A85 PHONO STAGE - LEFT CHANNEL
Circuit Diagram
L870C2JBR23-Apr-2001INITIALS
Date Printed 2 3Sheet of
Notes:
TR1062SA1085
TR1072SA1085
R12022R MF
R12122R MF
R105100R MF
R10847K MF
R101100R MF
R102100R MF
+ C102100U SILMIC
+C103100U SILMIC
R100330R MF
+ C10022U EL
R10912K MF
R11012K MF
C105100N PE
R117
2M2 MFR111
56K MF
R113100K MF
R114100K MF
TR111BC546B
TR110BC546B
TR114BC546B
TR112BC546B
TR113BC546B
TR100BC556B
TR101BC556B
TR102BC556B
TR103BC556B
TR104BC556B
TR105BC556B
TR108BC546B
TR109BC546B
+15V
-15V
R12239K MF
R112
100K MF
R115
15K MF
456
SW100B4PCO
10 11 12
SW100D4PCO
R104100R MF C108
470P PPW R12310R MF
C104100N PE
C107100N PE
R116
2M2 MF
3
26
74
IC100
TL071CD
0V_SIG0V_SIG
D1001N4148
R11822R MF
R11922R MF
C106100N PE
0V_SIG0V_HF
0V_SIG
0V_SIG0V_HF
D1011N4148
D1021N4148
R106100R MF
LEFT IN
LEFT OUT
Q_101
Q_102
Q_103
C109100P PPW
R1245K6 MF
C117470P PPWC116
470P PPW
C111
10N PP AX
C112
10N PP AX
C118
10U NP
C113
1U0 PE
C1151N3 PP
C110
4N7 PP
C101
1N0 PP
C119
100P PP
00_1051 JAG 22/3/01 PRODUCTION ISSUE 1
C120
1N0 PP
01_1070 JAG 17/4/01 updated pcb and scm 2
1 2 3 4 5 6 7 8
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G:\DATA\ECO\ECO AGENDA\01_1070 l870 A85 PHONO ISSUE2\L870_2.0.ddb - L870C3_2.0.SCH
A & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PB
A85 PHONO STAGE - RIGHT CHANNEL
Circuit Diagram
L870C3JBR23-Apr-2001INITIALS
Date Printed 3 3Sheet of
Notes:
TR2062SA1085
TR2072SA1085
R22022R MF
R22122R MF
R205100R MF
R20847K MF
R201100R MF
R202100R MF
+ C202100U SILMIC
+C203100U SILMIC
C209
100P PPW
R200330R MF
+ C20022U EL
R20912K MF
R21012K MF
C205100N PE
R217
2M2 MFR211
56K MF
R213100K MF
R214100K MF
TR211BC546B
TR210BC546B
TR214BC546B
TR212BC546B
TR213BC546B
TR200BC556B
TR201BC556B
TR202BC556B
TR203BC556B
TR204BC556B
TR205BC556B
TR208BC546B
TR209BC546B
+15V
-15V
R22239K MF
R212
100K MF
R215
15K MF
123
SW100A4PCO
7 8 9
SW100C4PCO
R204100R MF
C208
470P PPWR22310R MF
C204100N PE
C207100N PE
R216
2M2 MF
3
26
74
IC200
TL071CD
0V_SIG0V_SIG
D2001N4148
R21822R MF
R21922R MF
C206100N PE
0V_SIG0V_HF
0V_SIG
0V_SIG0V_HF
D2011N4148
D2021N4148
R206100R MF
RIGHT IN
RIGHT OUT
Q_201
Q_202
Q_203
R2245K6 MF
C217470P PPWC216
470P PPW
C215
1N3 PP
C211
10N PP AX
C212
10N PP AX
C21810U NP
C213
1U0 PE
C219
100P PP
C210
4N7 PP
C201
1N0 PP
00_1051 JAG 22/3/01 PRODUCTION ISSUE 1
C220
1N0 PP
01_1070 JAG 17/4/01 updated pcb and scm 2
1 2 3 4 5 6 7 8
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FilenameECO No. DESCRIPTION OF CHANGE
L882C1_4.1.PRJ
A & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PB
A85 amplifier and PSU - top sheet
Circuit Diagram
L882C1J Reckless20-Mar-2002INITIALS
Date Printed 1 4Sheet of
Notes:
Top+
Top-
SK100A
CAMCON_G
Bot+
Bot-
SK100B
CAMCON_G
Top+
Top-
SK101A
CAMCON_G
Bot+
Bot-
SK101B
CAMCON_G
D1001N4003F
D1011N4003F
1 2
34
5 6
78SP100
STAR_8
EMC
1
N
FSK104A
PHONO4G
N
F
SK104B
PHONO4G
0V_SIG0V_SIG
0V_SIG
1 2 3
SW100A2PCO
4 5 6
SW100B2PCO
C1001N0 SM
1234
SK102
AMPCT4
STANDBYSPKR1 ONSPKR2 ONTHERMPROTVIPROTDCPROTAC PRESENT
L SIG
R SIG
SPKR1 ON
SPKR2 ON
THERMPROTVIPROTAC PRESENTDCPROT
LS L
LS R
L SIG0V_SIG0V_LS_L0V_HF_L+49V-49V +5V_D
+49V-49V
0V_D0V_PSU
R SIG0V_SIG0V_LS_R0V_HF_R+49V-49V
0V_TRIG
LS L
0V_LS_L
0V_LS_R
LS R
+49V
0V_D
VIPROT_LDCPROT_L
DCPROT_LVIPROT_RDCPROT_R
DCPROT_R
VIPROT_LVIPROT_R
STANDBY
+49V
+5V_D
0V_D
0V_PSU
0V_LS_R
0V_HF_R
0V_LS_L0V_HF_L
0V_D
0V_TRIG
0V_SIG
R103
330R 1W CFR104
330R 1W CF
R105100R 1W CF
R106100R 1W CF
1234
SK106
AMPCT4
231
45
67
SK105
HPSKT
1234
SK107
AMPCT4
LS L
LS R
0V_LS_L
REMOTE
REMOTE
FROM PREAMP
INTEGRATED / PRE-POWERMODE SELECT SWITCH
TRIGGER
TRIGGER
TP102
TP101
TP100
TP103TP104
TP105TP106
TP107TP108
TP109TP110
TP117
TP111 TP113 TP115
TP112 TP114 TP116
0V_D +5V(D)VPOSVNEG
0V_PSUPWRON
THPROT_uCVIPROT_LVIPROT_R VIPROT_uC
AC_PRES0V_TRIGDCPROT_LDCPROT_R
DCPROT_uCRC5 INTRG IN
L882C2L882C2_4.1.SCH
INPUT0V_SIG
VIPROTDCPROTOUTPUT0V_LS
0V_HFVPOSVNEG
L882C3L882C3_4.1.SCH
INPUT0V_SIG
VIPROTDCPROTOUTPUT0V_LS
0V_HFVPOSVNEG
L882C4L882C4_4.1.SCH
RLY100A
RLY G5Z-2A-E
RLY100B
RLY G5Z-2A-E
RLY100CRLY G5Z-2A-E
RLY101A
RLY G5Z-2A-E
RLY101B
RLY G5Z-2A-E
RLY101CRLY G5Z-2A-E
TR100BD179
TR101BD179
R101
100R SM
R102
100R SM
R107220R SM
R108220R SM
PCB
PCB
L882PB_4
TP118
TP119
TP120
TP121
1234567891011121314
SK103
FFC 14W 2.54MM VER8K7014
EARTH LEAD8M101
EL
EARTH LEAD
12
PL100
12
PL101
R100
10R MF
02_E035 JBR 4/2/2002 FUSE VALUES UPRATED TO T4A 4.0
02_E062 JBR 20/3/02 LDO REG FITTED TO IC201 4.1
1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
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FilenameECO No. DESCRIPTION OF CHANGE
L882C2_4.1.SCH
A & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PB
A85 amplifier - power supply and microcontroller interface
Circuit Diagram
L882C2J Reckless20-Mar-2002
INITIALSDate Printed 2 4Sheet of
Notes:
LN E
N E L
SK203IEC3 NO RIVETS
BC200TOOLING4.1
Gre
en1
SK202CAGECLAMP1
C2053N3 MAINS
C2063N3 MAINS
Far from PCB
SK201B
JACK3.5X2
Near to PCB
SK201A
JACK3.5X2
SW200BVOL SEL SLIDE
SW200AVOL SEL SLIDE
C208
3N3 MAINS
C207
3N3 MAINS
VinI
GN
DG
Vout O
IC201L4940V5
D2031N4003F
D2011N4003F
D2021N4003F
D2001N4003F
C225100N CD
C226100N CD
VR201VDR 115V
VR200VDR 115V
+1
~ 2
-4
~3
BR200BRGBU8D
LIVENEUTRAL
EARTH
EMC Shield
SH200EMCMAINS
NEUTRAL
LIVE
LIVE
NEUTRAL
0V_D
+5V(D)
0V_D
0V_PSU
VPOS
VNEG
0V_PSU
+49V
+5V_D
0V_D
PWRON
-49V
+5V_D
TH200PTH90DEG
+5V_D
0V_D
THPROT_uC
VIPROT_L
VIPROT_R
+5V_D
0V_D
VIPROT_uC
0V_D
9VRMS
+5V_D
0V_D
9VRMS
+ C22922U EL
AC_PRES
+
C2273300u 25V
+ C2281000u 10V
2
3
4
6
7
8
1 5
SK204
MOLEXPWR8
1
2
3
4
5
6SK200
MOLEXPWR6
D206BAS16W SM
TR204BC849B
R211
10K SM
R220
10R SM
R2001K0 SM TR202FMMT597
D205BAS16W SM C213
10N SM
TR203FMMT497
DZ20715V 350MW SM
+ C22310U EL
+ C22210U EL
R21010K SM
+49V
0V_TRIG
0V_TRIG
1 2
IC202A
74HC14D
3 4
IC202B
74HC14D
1011
IC202E
74HC14D
1213
IC202F
74HC14D
C21410N SM
C21510N SM
R213
4K7 SM
R214
4K7 SM
TR205BC856B
R2061K0 SM C218
10N SM
C203100N SM
DCPROT_L
DCPROT_R
+5V_D
0V_D
DCPROT_uC
0V_D
5 6
IC202C
74HC14D
89
IC202D
74HC14D
C21610N SM
C21710N SM
R215
4K7 SM
R216
4K7 SM
TR206BC856B
R2071K0 SM C220
100N SM
C204100N SM
14
7
IC202G74HC14D
C201100N SM
C202100N SM
R2051K0 SM
R221
10R SM
C224100N CD
R2191K8 SM
R212
4K7 SM
TR201FMMT497
TRIGGER OUTPUTAPPROX 13.5VDC60mA MAX CURRENT
R201
1K0 SM
R202
1K0 SM
R203
1K0 SM
R204
1K0 SM
C21910N SM
C22110N SM
MAINS WIRING AND AUXILIARY SUPPLY
POWER AMP SUPPLY
MICROPROCESSOR SIGNALS INTERFACE
HS
HS200TO220HS08REG
123456
SK205
AMPCT6
RLY200A
DPDT5V
RLY200B
DPDT5V
RLY200CDPDT5V
115V
115V6
4
2
1 0V
5
8
9V
0V
9V
37
0V
TX200
TX 3VA 9301
TR200BD179
R21710R SM
R21810K SM
STANDBY RELAY CONTROL
R2271K0 SM
DZ2044V7 350MW SM
R228
100K SM
L20027mH C200
680P PP
3
21
IC200A
LM393A SM
R22310K SM
R229100K SM
R20910K SM
R2241K8 SM
R2301K5 SM
5
67
IC200B
LM393A SM
84
IC200CLM393A SM
R2251K8 SM
C2311N0 SM
R20810K SM
C232100N SM
0V_TRIG
+5V_D
RC5 IN
CARRIER FILTER AND DEMODULATOR
C23010N SM
MODULATED RC5REMOTE CONTROL INPUT
+ C23310U EL
R222
10K SM
TRG IN
TP206
TP200
TP207
TP203
TP201
TP202
TP210
TP204
TP205
TP208
TP209
TP211
TP212
+ C20910,000u 63V
+ C21010,000u 63V
R226
470R SM
C211100N PC
C212100N PC
CHASS
SK101CCAMCON_G
C235
1N0 SM
C234
220N X2 CLASS
R231
1M5 VR25
NF
NF
F202
T750mA SM
02_E035 JBR 4/2/2002 FUSE VALUES UPRATED TO T4A 4.0
F200
T4A
F201
T4A
02_E062 JBR 20/3/02 LDO REG FITTED TO IC201 4.1
1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
ISSUE
DRAWING NO.
23425
DRAWING TITLE
Drawn by:DATE
FilenameECO No. DESCRIPTION OF CHANGE
L882C3_4.1.SCH
A & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PB
A85 amplifier - power output stage left
Circuit Diagram
L882C3J Reckless20-Mar-2002
INITIALSDate Printed 3 4Sheet of
Notes:
R324
1K0 SM
TR300FMMT597
TR301FMMT597
R315100R SM
R316100R SM
R319100R SM
TR314FMMT497
TR315FMMT497
R317100R SM
R318100R SM
R320100R SM
R32222R SM
0V_SIG
C317
470N PE
0V_SIG
0V_SIG
INPUT
0V_SIG
R3505R6 2W CF
C319100N PE
0V_HF 0V_LS
C313
100N SM
R341
330R SM
R342
330R SM
R343100R SM
R344100R SM
R3450R0 SM
R3460R0 SM
R33422K SM
R33622K SM
D301BAS16W SM
D302BAS16W SM
TR312FMMT497
TR304FMMT597
TR313FMMT497
TR302FMMT597
DZ3054V7 350MW SM
0V_HF
VIPROT
C320100U NP
TR305FMMT597
DZ3064V7 350MW SM
0V_HF
DCPROT
OUTPUT
0V_LS
0V_HF
VPOS
VNEG
0V_HF
0V_HF
DZ30015V 350MW SM
DZ30115V 350MW SM
C309100N SM
C310100N SM
C314100N SM
0V_SIG
0V_SIG
D3041N4003F
D3031N4003F
R30210K SM
R32722K SM
RV300100R PSET
C31210N SM
12
PL300
BIAS
R3251K0 SM
R3261K0 SM
ADJ BIAS
D300BAS16W SM
R30010K SM
R30910K SM
R30510K SM
R30610K SM
+ C30510U EL
MEASURE
TR318SAP15N
TR319SAP15P
R30110K SM
C315100N SM
R347
100R SM
R349
100R SM
R348
100R SM
R340100K SM
DZ3024V7 350MW SM
DZ3034V7 350MW SM
3
21
84
IC300A
TL072CD
5
67IC300B
TL072CDR3284K7 SM
0V_HF
0V_SIG
TR311FMMT497
TR303FMMT597
TR310FMMT497
TR307FMMT597
C307
100P SM
C308
100P SM
INPUT FILTER V TO I AMP
DC SERVO
PNP CURRENT MIRROR
NPN CURRENT MIRROR
PRE DRIVER
PRE DRIVER
OUTPUT STAGE
OUTPUT STAGE
V-I PROTECTION
V-I PROTECTION
VI PROTECTSIGNAL TO MICRO
DC OFFSETDETECTION
DC OFFSET SIGNALTO MICRO
ZOBEL NETWORK
TR316FMMT497
TR308FMMT597
TR317FMMT497
R31110K SM
R31210K SM
R313
10K SM
R30310K SM
R30410K SM
R30710K SM
R3104K7 SM
R3294K7 SM
+
C300100U EL
+
C301100U EL
R338150R SM
R339150R SM
R30822K SM
R31410K SM
TR309FMMT497
TR306FMMT597
R32322R SM
R32122R SM
TP302
TP303
TP304
TP307
TP308
TP305
TP306
R33722R SM
R3311K5 SM
R332
1K8 SM
R330
1M0 SM
R333
3K3 SM
R335
3K3 SM
L300
2U2H LAC SMALL
R351
10R MF
C316470P PPW
C311100N PC
+ C31810U EL
TR321FMMT597
TR320FMMT497
+ C302100U EL 100V
+ C306100U EL 100V
R352470R 2W MF 5%
R353470R 2W MF 5%
BOOTSTRAP
BOOTSTRAP
(SET TO 16mV)
+ C303100U EL
+ C304100U EL
TR322FMMT497
R3541K0 SM
R3556K8 SM
02_E035 JBR 4/2/2002 FUSE VALUES UPRATED TO T4A 4.0
02_E062 JBR 20/3/02 LDO REG FITTED TO IC201 4.1
1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
ISSUE
DRAWING NO.
23425
DRAWING TITLE
Drawn by:DATE
FilenameECO No. DESCRIPTION OF CHANGE
L882C4_4.1.SCH
A & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PB
A85 amplifier - power output stage right
Circuit Diagram
L882C4J Reckless20-Mar-2002
INITIALSDate Printed 4 4Sheet of
Notes:
R424
1K0 SM
TR400FMMT597
TR401FMMT597
R415100R SM
R416100R SM
R419100R SM
TR414FMMT497
TR415FMMT497
R417100R SM
R418100R SM
R420100R SM
R42222R SM
0V_SIG
R430
1M0 SM
R4311K5 SM
R432
1K8 SM
C417
470N PE
0V_SIG
0V_SIG
INPUT
0V_SIG
R4505R6 2W CF
C419100N PE
0V_HF 0V_LS
C413
100N SM
R441
330R SM
R442
330R SM
R443100R SM
R444100R SM
R4450R0 SM
R4460R0 SM
R43422K SM
R43622K SM
D401BAS16W SM
D402BAS16W SM
TR412FMMT497
TR404FMMT597
TR413FMMT497
TR402FMMT597
DZ4054V7 350MW SM
0V_HF
VIPROT
C420100U NP
TR405FMMT597
DZ4064V7 350MW SM
0V_HF
DCPROT
OUTPUT
0V_LS
0V_HF
VPOS
VNEG
0V_HF
0V_HF
DZ40015V 350MW SM
DZ40115V 350MW SM
C409100N SM
C410100N SM
C414100N SM
0V_SIG
0V_SIG
D4041N4003F
D4031N4003F
R40210K SM
R42722K SM
RV400100R PSET
C41210N SM
12
PL400
BIAS
R4251K0 SM
R4261K0 SM
ADJ BIAS
D400BAS16W SM
R40010K SM
R40910K SM
R40510K SM
R40610K SM
+ C40510U EL
MEASURE
TR418SAP15N
TR419SAP15P
R40110K SM
C415100N SM
R447
100R SM
R449
100R SM
R448
100R SM
R440100K SM
DZ4024V7 350MW SM
DZ4034V7 350MW SM
3
21
84
IC400A
TL072CD
5
67IC400B
TL072CDR4284K7 SM
0V_HF
0V_SIG
TR411FMMT497
TR403FMMT597
TR410FMMT497
TR407FMMT597
C407
100P SM
C408
100P SM
INPUT FILTER V TO I AMP
DC SERVO
PNP CURRENT MIRROR
NPN CURRENT MIRROR
PRE DRIVER
PRE DRIVER
OUTPUT STAGE
OUTPUT STAGE
V-I PROTECTION
V-I PROTECTION
VI PROTECTSIGNAL TO MICRO
DC OFFSETDETECTION
DC OFFSET SIGNALTO MICRO
ZOBEL NETWORK
TR416FMMT497
TR408FMMT597
TR417FMMT497
R41110K SM
R41210K SM
R413
10K SM
R40310K SM
R40410K SM
R40710K SM
R4104K7 SM
R4294K7 SM
+
C400100U EL
+
C401100U EL
R438150R SM
R439150R SM
R40822K SM
R41410K SM
TR409FMMT497
TR406FMMT597
R42322R SM
R42122R SM
(SET TO 16 mV)
TP402
TP403
TP404
TP405
TP406
TP407
TP408
R43722R SM
R433
3K3 SM
R435
3K3 SM
R451
10R MF
C416470P PPW C411
100N PC
+ C41810U EL
TR421FMMT597
TR420FMMT497
+ C402100U EL 100V
+ C406100U EL 100V
R452470R 2W MF 5%
R453470R 2W MF 5%
BOOTSTRAP
BOOTSTRAP
+ C403100U EL
+ C404100U EL
L400
2U2H LAC SMALL
TR422FMMT497
R4541K0 SM
R4556K8 SM
02_E035 JBR 4/2/2002 FUSE VALUES UPRATED TO T4A 4.0
02_E062 JBR 20/3/02 LDO REG FITTED TO IC201 4.1
1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
ISSUE
DRAWING NO.
23425
DRAWING TITLE
Drawn by:DATE
FilenameECO No. DESCRIPTION OF CHANGE
J:\Released_Documents\Native_format_files\Protel_DDB\L928_B.3.Ddb - Documents\L928CT_1_B.3.PRJ
A & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PB
A32 FMJ AMP DISPLAY PCB
Circuit Diagram
L928CT1CL10-Oct-2001INITIALS
Date Printed 1 2Sheet of
Notes:
L928CT_B.1L928CT_2_B.3.SCH
FD_1
FIDUCIAL
FD_2
FIDUCIAL
A32 FMJ DISPLAY PCB
MICRO
PCB
PCB1
L928PB_B
CHASSIS 1
CHASSIS 2
CHASSIS 3
(BY SK3)
(BY SK1)
(BY SK2)
C391N0 SM
C451N0 SM
C401N0 SM
C411N0 SM
C431N0 SM
C441N0 SM
C461N0 SM
C471N0 SM C491N0 SM
C481N0 SM
0V_D
0V_D 0V_D 0V_D 0V_D
0V_D0V_D0V_D0V_D
0V_D
CL INITIAL PROTOTYPE25/04/01 A.0
FIX2FIXING HOLE 3.5
FIX7FIXING HOLE 3.5
FIX10FIXING HOLE 3.5
FIX5FIXING HOLE 3.5
FIX11FIXING HOLE 3.5
FIX13FIXING HOLE 3.5
FIX3FIXING HOLE 3.5
FIX8FIXING HOLE 3.5
FIX1FIXING HOLE 3.5
FIX6FIXING HOLE 3.5
FIX9FIXING HOLE 3.2
FIX12FIXING HOLE 3.2
C381N0 SM
C371N0 SM
0V_D
0V_D
WAF 9/08/01 UPDATED PROTOTYPE B.0
JBR 10/9/01 PRE PRODUCTION RELEASE B.2
WAF 26/9/01 STICKY PADS RENUMBERED B.3
1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
ISSUE
DRAWING NO.
23425
DRAWING TITLE
Drawn by:DATE
FilenameECO No. DESCRIPTION OF CHANGE
J:\Released_Documents\Native_format_files\Protel_DDB\L928_B.3.Ddb - Documents\L928CT_2_B.3.SCH
A & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PB
A32 FMJ AMP DISPLAY PCB
Circuit Diagram
L928CT2CL10-Oct-2001INITIALS
Date Printed 2 2Sheet of
Notes:
Vcc1
PB02
PB13
PB24
PB35
PB46
PB57
PB68
PB79
Vpp/RESO10
Vss11
TxD0/P9.012
TxD1/P9.113
RxD0/P9.214
RxD1/P9.315
IRQ4/SCK0/P9.416
IRQ5/SCK1/P9.517
D0/P4.018
D1/P4.119
D2/P4.220
D3/P4.321
Vss22
D4/P4.423
D5/P4.524
D6/P4.625
D7/
P4.7
26
D8/
P3.0
27
D9/
P3.1
28
D10
/P3.
229
D11
/P3.
330
D12
/P3.
431
D13
/P3.
532
D14
/P3.
633
D15
/P3.
734
Vcc
35
A0/
P1.0
36
A1/
P1.1
37
A2/
P1.2
38
A3/
P1.3
39
A4/
P1.4
40
A5/
P1.5
41
A6/
P1.6
42
A7/
P1.7
43
Vss
44
A8/
P2.0
45
A9/
P2.1
46
A10
/P2.
247
A11
/P2.
348
A12
/P2.
449
A13
/P2.
550
P2.6/A14 51P2.7/A15 52P5.0/A16 53P5.1/A17 54P5.2/A18 55P5.3/A19 56
Vss 57P6.0/WAIT 58P6.1/BREQ 59P6.2/BACK 60
CLKOUT 61STBY 62
RES 63NM1 64
Vss 65EXTAL 66
XTAL 67Vcc 68
P6.3/AS 69P6.4/RD 70
P6.5/HWR 71P6.6/LWR 72
MD0 73MD1 74MD2 75
AV
cc76
Vre
f77
P7.0
/AN
078
P7.1
/AN
179
P7.2
/AN
280
P7.3
/AN
381
P7.4
/AN
482
P7.5
/AN
583
P7.6
/AN
6/D
A0
84P7
.7/A
N7/
DA
185
AV
ss86
P8.0
/IRQ
087
P8.1
/IRQ
188
P8.2
/IRQ
289
P8.3
/IRQ
390
P8.4
/CS0
91V
ss92
PA0
93PA
194
PA2
95PA
396
PA4
97PA
598
PA6
99PA
710
0
H8/3048F
IC1
H8/3048F
Gnd1
Res2Vcc3
DS1
233
Gnd4
IC2
DS1233 SM
R110K SM
R210K SM
R310K SM
R410K SM
R510K SM
R610K SM
R710K SM
R810K SM
R910K SM
R1010K SM
R1110K SM
R1210K SM
R1310K SM
R1410K SM
R1510K SM
R1610K SM
0V_D
R17330R SM
R18330R SM
R19330R SM
R21330R SM
R22330R SM
R25330R SM
BUT1
1
BUT2
BUT3
BUT4
BUT1
3
BUT6
BUT7
BUT8
BUT9
BUT1
2
BUT1
4
BUT1
BUT1
0
BUT5
BUT1
5
BUT1
6
0V_D
C118P SM
C218P SM
Programming adaptor
+5V
0V_D
+5V
+5V
D2BAS16W SM
+5V
R26
10K SM
+5V
IND
10
IND
2
IND
8
IND
1
IND
5
IND
6
IND
9
IND
4
IND
3
IND
7
0V_D
+5V
R27
10K
SM
R28
10K
SM
R34150R SM
R33330R SM
0V_D
+5V
0V_D
+5V
To preamp board
SEL1SEL2SEL3SEL4SEL5SEL6SEL7SEL8SEL9
LEFTAUDIO
MUTETONE
TONEID
SDATA
SLOAD
SCLK
0V_D
PHASEAPHASEB
+5V
PHAS
EAPH
ASEB
+5V
0V_D
A0
1A
12
A2
3
VSS4
SDA
5
SCL
6
WP
7
VDD 8
IC524C02 SM
0V_D
R3210K SM
+5V
DISPCLK
DISPDAT
DIS
PDAT
DIS
PCLK
0V_D
F1 to F2 = 4Vac 150mAVDD2 = 40Vdc 20mA
+5V
DIS
PLAT
DIS
PBLK
3
21
IC6A
LM393A SM
5
67
IC6B
LM393A SM
84
IC6CLM393A SM
C3100N SM
C4100N SM
0V_D
0V_D
C5100N SM
0V_D
DISPBLKDISPLAT
BUT9BUT8BUT7BUT6BUT2IND3
BUT3
BUT1
IND
1BU
T5IN
D2
BUT4
IND
12IN
D11
BUT1
6IN
D6
BUT1
5IN
D5
BUT1
0IN
D7
BUT1
2IN
D9
BUT1
4IN
D4
BUT1
1IN
D8
BUT1
3
C6100N SM
C7
100N SM
C8100N SM
C9
100N SM
C10100N SM
0V_D
+5V
R35
10K SM
R36
10K SM
R3710K SM
R381K2 SM
R39
2K2 SM
R404K7 SM
+5V
+5V
+5V
0V_D
0V_D
+ C1110U EL SM
R41100K SM
R42100K SM
0V_D
+5V
R43100K SM
R44100K SM
3
21
IC7ALM393A SM
5
67
IC7B
LM393A SM
84
IC7CLM393A SM
0V52V7
2V7
0V5
3
21
IC8A
LM393A SM
5
67
IC8B
LM393A SM
84
IC8CLM393A SM
R4510K SM
R461K2 SM
R474K7 SM
0V5
2V7+5V
+5V
0V_D
0V_D
R48
0R0
SM
SCLKSLOAD
SDATATONEID
SEL1SEL2SEL3SEL4SEL5SEL6SEL7
SEL8
SEL9
MU
TETO
NE
+ C1410U EL SM
C15100N SM
0V_D
C16100N SM
12345
SK2
AMPCT5
SAMTX2
SAMRX2
SAMRX2SAMTX2
SAMBUSYSAMDATA
+5V
0V_D
IND
10
C17100N SM
0V_D
D3BAS16W SM
R5510K SM
+5V
PR_TXDPR_GND
PR_RESETPR_MD
PR_PMODEPR_VPP
PR_RXDPR_VCC
VFD_VDD2
3
21
IC11AAD8532 SM
5
67
IC11BAD8532 SM
84
IC11CAD8532 SM C25
100N SM
DC
PRO
TVI
PRO
T
F1C
LOC
KF2
CLO
CK
STANDBYSP1ONSP2ONTHERMPROT
+5V
0V_D
F1CLOCK
F2CLOCK
+SUP VFD_VDD2
+
C2810U EL SM
0V_D
R5610K SM
R5710K SM
Q_1Q_2Q_3Q_4Q_5Q_6Q_7Q_8Q_9
Q_10
Q_11Q_12
Q_14
Q_15
Q_16
Q_17
Q_19
Q_20
Q_21 Q_22
Q_23
R58
0R0 SM
R59
0R0 SM
R64100R SM
R65
100R SM R66100R SMR67
100R SM
C3110P SM
C3210P SM
0V_D
R4910K SM
R5010K SM
+5V
Q_34SAMHOLD
SAMHOLD
R51100R SM
Q_35
Q_37
Q_38
Q_39
Q_40Q_41
Q_42
Q_43
Q_44
Q_45
Q_46
Q_47Q_48
Q_49
Q_50
Q_51
Q_52
Q_53Q_54
Q_55
Q_56
Q_57
Q_58
Q_59
Q_64
Q_65 Q_66 Q_67 Q_68 Q_69 Q_70 Q_71 Q_72 Q_73 Q_74
Q_75
Q_78
Q_79 Q_80
Q_81
Q_82
Q_8
3Q
_84
Q_8
5
Q_86Q_87Q_88Q_89Q_90Q_91
Q_9
2Q
_93
Q_9
4Q
_95
Q_9
6Q
_97
Q_98
Q_9
9Q
_100
Q_1
01Q
_102
Q_1
03Q
_104
Q_1
05Q
_106
Q_1
07Q
_108
Q_1
09Q
_110
Q_1
11Q
_112
Q_1
13Q
_114
Q_115
Q_116
R20330R SM
R23330R SM
R24330R SM
R31330R SM
R G
LED11
LED RED/GRN 3MM
Q1BC847B
Q2BC847B
R2910K SM R30
10K SM
0V_D
IND
11
IND
12
R6810K SM
BUT1
7
BUT17
0V_D
+5V
+SUP
STANDBYSP1ONSP2ONTHERMPROTVIPROTDCPROTACPRESENT
ACPR
ESEN
T
0V_D
R69
2R2
SM
R70
2R2
SM
R71
2R2
SM
R72
2R2
SM
0V_D
IRIN
Q3BC847B
Q4BC847B
R7310K SM
R7410K SM
R7510K SM
R76
10K SM
0V_D
+5V
IRIN
IRIN
IROUT
C12
100N SM
(FIT CLOSE TO SK1)
+5V
0V_D
+ C33220U EL
+ C34220U EL
SAMDATASAMBUSY
IRIN
C 3
B 2A 1
4 5
SW18ALPS_ENCODER
LED7
LED GREEN
LED8
LED GREEN
LED6
LED GREEN
LED3
LED GREEN
LED10
LED GREEN
LED9
LED GREEN
LED1
LED GREEN
LED4
LED GREEN
LED2
LED GREEN
LED5
LED GREEN
RECEIVE
TRANSMIT
TRANSMIT
TRANSMIT
RECEIVE
RECEIVE
RESPIN
RESPIN
PB0
PB0
VPROG
VPROG
1234567891011121314
SK1
FFC 14W 2.54MM HOR
12345678910111213141516171819202122
SK3
FFC 22W 1MM HOR
To power amp / PSU
0V_D
C50A 100PX4 SMC50B 100PX4 SM
C50C 100PX4 SMC50D 100PX4 SM
C51A 100PX4 SMC51B 100PX4 SM
C51C 100PX4 SMC51D 100PX4 SM
C52A 100PX4 SMC52B 100PX4 SM
C52C 100PX4 SMC52D 100PX4 SM
C53A 100PX4 SMC53B 100PX4 SM
C53C 100PX4 SMC53D 100PX4 SM
C54A 100PX4 SMC54B 100PX4 SM
C54C 100PX4 SMC54D 100PX4 SM
C55A 100PX4 SMC55B 100PX4 SM
CHASSIS 1
C60D 100PX4 SMC60C 100PX4 SM
C60B 100PX4 SMC60A 100PX4 SM
C61D 100PX4 SMC61C 100PX4 SM
C61B 100PX4 SMC61A 100PX4 SM
C62D 100PX4 SMC62C 100PX4 SM
C62B 100PX4 SMC62A 100PX4 SM
C63D 100PX4 SMC63C 100PX4 SM
CHASSIS 2
+ C29100U EL SM
R52
100R SM
R53
100R SM
LEFTAUDIO
+
C2610U EL SM
C55C 100PX4 SMC55D 100PX4 SM
C63B 100PX4 SM
C63A 100PX4 SM
X116MHZ SM
F11
F12
F13
SIN
4
VD
D1
5
SOU
T6
LAT
7
BLK
8
CLK
9
VSS
10
VSS
11
VD
D2
12
F215
F216
F217
Graphics Display
DISP1B1013
12345678910
11121314
SK4
HEADER 7X2HORIZ
STICKY PADDOUBLE SIDED
10 X 15MM
SP101
STICKY PAD DS 10X15MM
STICKY PADDOUBLE SIDED
10 X 15MM
SP102
STICKY PAD DS 10X15MM
Q_122Q_123Q_124Q_125Q_126Q_127Q_128
Q_129
Q_120
Q_119
Q_118
Q_117
Q_121
CL 25/04/01 INITIAL PROTOTYPE A.0
+5V
3
O/P2
GN
D1
Cas
eC
ase
O/P
GN
D+5
V
RX1SBX1610-52/PIC-26043TM2
Q5BD179 NPN TO-126
R543K3 MF
DISPLAY CRADLEE916PM
DC1
DISPLAY CRADLE E916PM
DISPLAY CRADLEE916PM
DC2
DISPLAY CRADLE E916PM
SW6TACTSW A1505
SW12TACTSW A1505
SW11TACTSW A1505
SW8TACTSW A1505
SW7TACTSW A1505
SW13TACTSW A1505
SW14TACTSW A1505
SW15TACTSW A1505
SW16TACTSW A1505
SW17TACTSW A1505
SW1TACTSW A1505
SW2TACTSW A1505
SW3TACTSW A1505
SW4TACTSW A1505
SW5TACTSW A1505
SW9TACTSW A1505
SW10TACTSW A1505
POWER SP1SP2TONE DOWN UP ENTERMODE RECORD SELECT
C13
100N SM
AV DVD CD TUNER VCRPHONO/
AUX TAPE
IR RXSUPPORT PAD
SP
IR RX SUPPORT PAD
LED
SPAC
ER
SP1
SPACER F195
LED
SPAC
ER
SP2
SPACER F195
LED
SPAC
ER
SP3
SPACER F195
LED
SPAC
ER
SP4
SPACER F195
LED
SPAC
ER
SP5
SPACER F195
LED
SPAC
ER
SP6
SPACER F195
LED
SPAC
ER
SP7
SPACER F195
LED
SPAC
ER
SP8
SPACER F195
LED
SPAC
ER
SP9
SPACER F195
LED
SPAC
ER
SP10
SPACER F195
WAF 9/08/01 UPDATED PROTOTYPE B.0
IR RXSUPPORT PAD
SP103
IR RX SUPPORT PAD
PLACE ONE ON TOP OFTHE OTHER UNDER RX1
D1ZENER 400MW 33V
JBR 10/9/01 PRE PRODUCTION RELEASE B.2
WAF 26/9/01 STICKY PADS RENUMBERED B.3
1 2 3 4
A
B
C
D
4321
D
C
B
A
ISSUE
DRAWING NO.
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DRAWING TITLE
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FilenameECO No. DESCRIPTION OF CHANGE
J:\Change_Control\ECO_AGENDA\01_E014 Fuse changes on A32 preamp\L937_1.1.ddb - Documents\Schematic\L937C1_1.0.PRJ
A & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PB
Integrated amplifier preamp
Circuit Diagram
L937C1JBR28-Nov-2001INITIALS
Date Printed 1 3Sheet of
Notes:
Main signal pathL937C2_1.1.SCH
Power supplyL937C3_1.1.SCH
USE EXCLUDE NF WHEN USING RUNOUT SHEET PROGRAM
PCBPCB1
L937PB_1 01_1142 JBR 14/8/01 First production release 1.0
01_E014 JBR 28/11/01 Fuses uprated to 2A 1.1
1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
ISSUEDRAWING NO.
23425
DRAWING TITLE
Drawn by:DATE
FilenameECO No. DESCRIPTION OF CHANGE
J:\Change_Control\ECO_AGENDA\01_E014 Fuse changes on A32 preamp\L937_1.1.ddb - Documents\Schematic\L937C2_1.0.SCH
A & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PB
Integrated amplifier preamp - main signal path
Circuit Diagram
L937C2JBR28-Nov-2001INITIALS
Date Printed 2 3Sheet of
Notes:
EMC
1
N
F
SK2A
PHONO4G
C1001N0 SM
0V_SIG
0V_SIG
R100
1K0 SM
R101
1K0 SM
R103100K SM
R104100K SM
D100BAV99W DUAL SM+15V -15V
0V_SIG
0V_SIG
D101BAV99W DUAL SM
+15V -15V
N
F
SK2B
PHONO4G
0V_SIG
R102
1K0 SM
R125
1K0 SM
R105100K SM
R128100K SM
D102BAV99W DUAL SM+15V -15V
0V_SIG
0V_SIG
D106BAV99W DUAL SM
+15V -15V
EMC
1
N
F
SK3A
PHONO4G
C1211N0 SM
0V_SIG
0V_SIG
R126
1K0 SM
R127
1K0 SM
R129100K SM
R130100K SM
D107BAV99W DUAL SM+15V -15V
0V_SIG
0V_SIG
D108BAV99W DUAL SM
+15V -15V
N
F
SK3B
PHONO4G
0V_SIG
R156
1K0 SM
R157
1K0 SM
R159100K SM
R160100K SM
D112BAV99W DUAL SM+15V -15V
0V_SIG
0V_SIG
D113BAV99W DUAL SM
+15V -15V
EMC
1
N
F
SK4A
PHONO4G
C1391N0 SM
0V_SIG
0V_SIG
R158
1K0 SM
R189
1K0 SM
R161100K SM
R192100K SM
D114BAV99W DUAL SM+15V -15V
0V_SIG
0V_SIG
D115BAV99W DUAL SM
+15V -15V
EMC
1
N
F
SK5A
PHONO4G
0V_SIG
R190
1K0 SM
R191
1K0 SM
R193100K SM
R194100K SM
D116BAV99W DUAL SM+15V -15V
0V_SIG
0V_SIG
D117BAV99W DUAL SM
+15V -15V
CD INPUT
TUNER INPUT
AV INPUT
DVD INPUT
TAPE INPUT
VCR INPUT
C1601N0 SM
0V_SIG
C1641N0 SM
0V_SIG
0V_SIG
R195
1K0 SM
R196
1K0 SM
R197100K SM
R198100K SM
D118BAV99W DUAL SM+15V -15V
0V_SIG
0V_SIG
D119BAV99W DUAL SM
+15V -15V
EMC
1
N
F
SK6
PHONO2G
AUX INPUT
CD L
CD R
TUNER L
TUNER R
AV L
AV R
DVD L
DVD R
TAPE IN L
TAPE IN R
VCR IN L
VCR IN R
AUX L
AUX R
AUX LCD LTUNER LAV LDVD L
VCR IN LMODULE L
0V_SIG
AUX RCD RTUNER RAV RDVD R
VCR IN RMODULE R
0V_SIG
TAPE 0TAPE 1
TAPE 2
TAPE 0TAPE 1
TAPE 2
+15V
+15V-15V
-15V
0V_SIG
0V_SIG
C104100N SM
C105100N SM
+15V
-15V
3
21
Z109ATL072 SM
84
Z113CTL072 SM
R1061M0 SM
0V_SIG
R108
47R SM
D103BAV99W DUAL SM
+15V -15V
N
F
SK4B
PHONO4G
0V_SIG
5
67
Z109BTL072 SM
R1071M0 SM
0V_SIG
R109
47R SM
D104BAV99W DUAL SM
+15V -15V
3
21
Z110ATL072 SM
R1311M0 SM
0V_SIG
R133
47R SM
D109BAV99W DUAL SM
+15V -15V
5
67
Z110BTL072 SM
R1321M0 SM
0V_SIG
R134
47R SM
D110BAV99W DUAL SM
+15V -15V
N
F
SK5B
PHONO4G
0V_SIG
+15V
+15V-15V
-15V
-15V
-15V
C108100P SM
C109100P SM
C129100P SM
C130100P SM
AUX LCD LTUNER LAV LDVD LTAPE IN L
MODULE L
0V_SIG
AUX RCD RTUNER RAV RDVD RTAPE IN R
MODULE R
VCR 0VCR 1
VCR 2
VCR 0VCR 1
VCR 2
0V_SIG
0V_SIG
0V_SIG
TAPE OUTPUT
VCR OUTPUT
C106100N SM
C107100N SM
+15V
-15V0V_SIG
C125100N SM
C126100N SM
+15V
-15V
0V_SIG
C127100N SM
C128100N SM
+15V
-15V
0V_SIG
AUX LCD LTUNER LAV LDVD LTAPE IN LVCR IN LMODULE L
AUX RCD RTUNER RAV RDVD RTAPE IN RVCR IN RMODULE R
LISTEN 0LISTEN 1LISTEN 2
LISTEN 0LISTEN 1LISTEN 2
0V_SIG
0V_SIG
C143100N SM
C144100N SM
+15V
-15V
0V_SIG
C145100N SM
C146100N SM
+15V
-15V
0V_SIG
84
Z114CTL072 SM
R17022K SMR16222K SM R17122K SMR16322K SM R17222K SMR16422K SM R17322K SMR16522K SM
R17422K SMR16622K SM R17522K SMR16722K SM R17622K SMR16822K SM R17722K SMR16922K SM
+15V
+15VR178
22K SM
C148
22P SM
R179
22K SM
C149
22P SM
5
67 Z115B
OPA2134PA SM
5
67 Z116B
OPA2134PA SM
84
Z116C
OPA
2134
PA S
M
0V_SIG
0V_SIG
R183
1M0 SM
R184
1M0 SMR199
100K SM
R180
100K SM
0V_SIG
0V_SIG
+5V
+5V
+5V
+5V
+5V
+5V
X04X15X26X37X412X511X610
X79
EN2A01A116A215
V-3
D 8
GND14
V+ 13Z100
DG408DY
X04X15X26X37X412
X511X610X79
EN2A01A116A215
V-3
D 8
GND14
V+ 13Z101
DG408DY
X04X15X26
X37X412X511X610X79
EN2A01A116A215
V-3
D 8
GND14
V+ 13Z102
DG408DY
X04
X15X26X37X412X511X610X79
EN2A01A116A215
V-3
D 8
GND14
V+ 13Z103
DG408DY
X04X15X26X37X412X511X610X79
EN2A01A116
A215
V-3
D 8
GND14
V+ 13Z104
DG408DY
X04X15X26X37X412X511X610X79
EN2
A01A116A215
V-3
D 8
GND14
V+ 13Z105
DG408DY
LIN4
LGND5
RGND12
RIN13
LMO 2
RMO 15
AVC
C1
DVC
C7
LFO 3
RFO 14
DG
ND
11
XCS
6D
ATA
9C
CLK
10
XMU
TE8
AGN
D16
Z107VSDVC
0V_SIG
C186
100N SM
+5V
+C15410U EL
C155100N SM C156100N SM
0V_SIG0V_SIG
+5V
SCLK
SDAT
ASL
OAD
0V_SIG
0V_SIG
R200
2R2 SMR201
2R2 SMR202
2R2 SM0V_SCLK
0V_SLOAD
0V_SDATA
C15822P SM
C15922P SM
0V_SIG
0V_SIG
SEL11
S2 14D12
V+ 13S13
S3 11
V-4
GND5 VL 12
S46
D3 10D47
SEL3 9
D2 15
SEL48
SEL2 16Z106
DG413DY
+15V-15V
0V_SIG
+5V
TONE*
TONE*
TONE*
TONE*
C152100N SM
0V_SIG
C153100N SM
R186
47R SM
R187
47R SM
R185
22R SM + C157100U EL
R1102K2 SM
R1112K2 SM
+ C110100U EL
R112
22K SM
0V_SIG
R11322K SM
+ C11110U CERAFINE
+5V
3
21
Z111ATL072 SM
5
67
Z112BTL072 SM3
21
Z112ATL072 SM
5
67
Z111BTL072 SM
84
Z109CTL072 SM
84
Z110CTL072 SM
+
C117
10U CERAFINE
R12122K SM
R11922K SM
R12022K SM
+ C11610U CERAFINE
0V_SIG
D105BAV99W DUAL SM
0V_SIG
R114
22K SM
R118
22K SM
1618
17Z108D
DS
1844
1519
14Z108A
DS
1844
R1152K7 SM
R1162K7 SM
0V_SIG
R1175K6 SM
R1352K2 SM
R1362K2 SM
+ C131100U EL
R137
22K SM
0V_SIG
R13822K SM
+ C13210U CERAFINE
+5V
3
21
Z113ATL072 SM
5
67
Z114BTL072 SM3
21
Z114ATL072 SM
5
67
Z113BTL072 SM
+
C138
10U CERAFINE
R14622K SM
R14422K SM
R14522K SM
+ C13710U CERAFINE
0V_SIG
D111BAV99W DUAL SM
0V_SIGR139
22K SM
R143
22K SM
62
7Z108B
DS
1844
53
4Z108C
DS
1844
R1402K7 SM
R1412K7 SM
0V_SIG
R1425K6 SM
84
Z111CTL072 SM
84
Z112CTL072 SM
+15V
+15V-15V
-15V
C169100N SM
C168100N SM
C172100N SM
C173100N SM
C176100N SM
C177100N SM
C180100N SM
C181100N SM
0V_SIG 0V_SIG 0V_SIG 0V_SIG
C170100N SM
C171100N SM
C174100N SM
C175100N SM
C178100N SM
C179100N SM
C182100N SM
C183100N SM
C184100N SM
C185100N SM
0V_SIG 0V_SIG 0V_SIG 0V_SIG 0V_SIG
PS 1R/W 8
DOUT 11RST9DIN12CLK13
VCC
20G
ND
10
Z108E
IC DS1844
+5V
SDATASCLK
TONEID
C118100N SM
+ C12010U EL
0V_SIG
C11910N SM
R122
2R2 SM0V_TONEID
C115
22P SM
C136
22P SM
0V_SDATA
0V_SCLK
R124
2R2 SM
R123
2R2 SM
R15122K SMR14722K SM R15222K SMR14822K SM R15322K SMR14922K SM R15422K SMR15022K SM R15522K SM
LISTEN 0LISTEN 1LISTEN 2VCR 0VCR 1VCR 2TAPE 0TAPE 1TAPE 2
TONE*
0V_TONEID
TONEID
0V_SDATA
SDATA
0V_SLOAD
SLOAD
0V_SCLK
SCLK
1234
SK102
AMPCT4
0V_SIG
12345678
SK103
AMPCT8
+15V
0V_SIG
-15V
AUX R
AUX L
TO P
HO
NO
PC
B
TO POWER AMP I/P
TO M
ICR
O /
DIS
PLAY
PC
B
3
21Z115A
OPA2134PA SM
3
21Z116A
OPA2134PA SM
3
21Z117A
OPA2134PA SM
5
67Z117B
OPA2134PA SM
84
Z115C
OPA
2134
PA S
M 84
Z117C
OPA
2134
PA S
M
RLY100A
RLY DPDT 5V SM
RLY100B
RLY DPDT 5V SM
+
-
RLY100CRLY DPDT 5V SM
D120BAS16W SM
Q100BC849B R203
4K7 SMMUTE*
0V_D
+5V
MUTE*
0V_D
+ C18710U EL
123456789
101112131415161718192021222324252627282930
SK101
FFC30V SM
0V_MODULE
AUX L
AUX R
CD L
CD R
TUNER L
TUNER R
AV L
AV R
DVD L
DVD R
TAPE IN L
TAPE IN R
VCR IN L
VCR IN R
MODULE LMODULE R
TO P
LUG
IN M
OD
ULE
PC
B
+5V
R188
10K SM0V_SIG
0V_HF
D121BAV99W DUAL SM
D122BAV99W DUAL SM+15V -15V
C113470N PE
C134470N PE
C150
470N PE
C151
470N PE
+ C18810U EL
+ C18910U EL
+15V
-15V
0V_SIG
+ C19010U EL
+ C19110U EL
+15V
-15V
0V_SIG
R20410K SM
C112
470N PEC192
470N PE
C133
470N PEC193
470N PE
C101470P FKP2
C102470P FKP2
C103470P FKP2
C122470P FKP2
C123470P FKP2
C124470P FKP2
C140470P FKP2
C141470P FKP2
C142470P FKP2
C161470P FKP2
C162470P FKP2
C163470P FKP2
C165470P FKP2
C166470P FKP2
C114CFKP2 63V 2N2
C135CFKP2 63V 2N2
CDL1 CDL
CDR
CDR1
TUNL1
TUNR1
TUNL
TUNR
AVL1
AVR1
AVL
AVR
DVDL1
DVDR1
DVDL
DVDR
TAPEIL1
TAPEIR1
TAPEIL
TAPEIR
VCRIL1
VCRIR1
VCRIL
VCRIR
AUXL
AUXR
+15V1
-15V1
AUXL1
AUXR1
LISTEN2LISTEN1
LISTEN0
LIST2LIST1
LIST0
VCR2VCR1
VCR0
VCR21VCR11
VCR01
TAPE2TAPE1
TAPE0
TAP2TAP1
TAP0
TAPEO1
TAPE02
VCRO1
VCR02
Z115_1A
Z116_1A
/TONE
Z107_4
Z107_13
Z107_1
SK102_1
SK102_3
Z116_1B
Z113_3
Z111_3
Z115_1B
Z111_1
Z111_7
Z108_19
Z112_3Z112_1
Z112_7
TONEIDSDATA
SCLK
Z106_11Z114_7Z114_1Z114_3
Z108_3
Z113_7
Z113_1
AUXIL1
AUXIR1
Z106_14
+15V2
-15V2
R182100R SM
123456789
10111213141516171819202122
SK100
FFC22V1MM
C147100N PE
C167100N PE
01_1142 JBR 14/8/01 First production release 1.0
R18110K SM
01_E014 JBR 28/11/01 Fuses uprated to 2A 1.1
1 2 3 4
A
B
C
D
4321
D
C
B
A
ISSUE
DRAWING NO.
23425
DRAWING TITLE
Drawn by:DATE
FilenameECO No. DESCRIPTION OF CHANGE
J:\Change_Control\ECO_AGENDA\01_E014 Fuse changes on A32 preamp\L937_1.1.ddb - Documents\Schematic\L937C3_1.0.SCH
A & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PB
Integrated amplifier preamp - power supply
Circuit Diagram
L937C3JBR28-Nov-2001INITIALS
Date Printed 3 3Sheet of
Notes:
12
34
SK300MOLEXPWR4
+ C3001000u 35V
+ C3101000u 35V
D302
BAS16W SM
D308
BAS16W SM
VinI
ADJ
A
Vout O
Z301LM317T
D305BAS16W SM
D304
BAS16W SM
R303470R SM
+C30510U EL
C304100N SM
R3021K2 SM
R307220R SM
+15V
-15V
+5V
0V_PSU
SP300STAR POINT 4 0V_PSU
0V_SIG
0V_HF 0V_MODULE
+ C306470U EL 25V
C307470N PE
C308100N SM
C309100N SM
Q3012SC5248
Q3052SA1964
+ C302220U EL
+ C312220U EL
Q300J112
Q303J112
R300330R SM
R304330R SM
+C3033300u 25V
+ C3133300u 25V
D31015V 350MW SM
D31115V 350MW SM
Q306BC846B
Q307BC856B
1234
SK301
IDC4S
+15V
-15V0V_PSU
0V_MODULE
AC1
AC2
UR+
UR-
D311-
D310+
+15V3 +5V
+3.75V
0V_SIG
-15V3
C3141N0 PP
C3151N0 PP
D300S1D
D301S1D
D306S1D
D307S1D
01_1142 JBR 14/8/01 First production release 1.0
01_E014 JBR 28/11/01 Fuses uprated to 2A 1.1
F300
T2A SM
F301
T2A SM
1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
ISSUEDRAWING NO.
23425
DRAWING TITLE
Drawn by:DATE
FilenameECO No. DESCRIPTION OF CHANGE
J:\ECO_wip\01_1101 A85 RANGE PCB FUSES AND DC OFFSET\L911_1.1.DDB - Documents\L911C1_1.1.PRJ
A & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PB
AP85 third channel - top level
Circuit Diagram
L911C1J Reckless4-Jun-2001 INITIALS
Date Printed 1 2Sheet of
Notes:
+1
~ 2
-4
~3
BR100BRGBU8D
0V_PSU
+49V
-49V
TH100PTH90DEG
+5V_D
0V_D
1011IC100E
74HC14D
5 6IC100C
74HC14D
89IC100D
74HC14D
14
7
IC100G74HC14D
C100100N SM
C101100N SM
R1001K0 SM
POWER AMP SUPPLY
TP100
TP101
+ C10610,000u 63V
+ C10710,000u 63V
C108100N PC
C109100N PC
D1001N4003F D1011N4003F
SPKR1 ON
SPKR2 ON
TR100BD179
TR101BD179
R105
100R SM
R106
100R SM
R103220R SM
R104220R SM
Top+
Top-
SK102A Bot+
Bot-
SK102BINPUT0V_SIG
VIPROTDCPROTOUTPUT0V_LS
0V_HFVPOSVNEG
L911C2_1L911C2_1.1.SCH
EMC
1
N
F
SK101
PHONO2G
C1051N0 SM
0V_SIG
+49V
-49V
0V_HF
0V_LS
0V_LS
RLY101A
RLY SPST SPKR
RLY101BRLY SPST SPKR
RLY100A
RLY SPST SPKR
RLY100BRLY SPST SPKR
0V_D
1 2IC100A
74HC14D
3 4IC100B
74HC14DC10310N SM
C10410N SM
R101
1K0 SM
R102
1K0 SM
1 2
3 4
SK103MOLEXPWR4
THERMPROT
VIPROT1
DCPROT1
+49V
0V_D
1213IC100F
74HC14D
1234567891011121314
SK100
FFC 14W 2.54MM VER
+5V_D
0V_DSPKR1 ONSPKR2 ONTHERMPROTVIPROT1DCPROT1
0V_D
+5V_D
+ C102100U EL
SP100
STAR POINT 8
0V_PSU
0V_SIG
0V_LS 0V_HF
0V_DPIN 1 TO THE LEFT AS YOU LOOK FROM THE FRONT
R107
2R2 SM
TP102
TP103
TP104TP105TP106TP107TP108
TP109
TP110
TP114
TP115
TP111TP112 TP113
TP116
JR 30/1/01 PRODUCTION ISSUE 1.0
PCBPB
L911PB_1
01_1018
01_1101 JR 4/6/01 DC OFFSET CHANGES 1.1
1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
ISSUEDRAWING NO.
23425
DRAWING TITLE
Drawn by:DATE
FilenameECO No. DESCRIPTION OF CHANGE
L911C2_1.1.SCH
A & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PB
AP85 third channel - output stage
Circuit Diagram
L911C2J Reckless4-Jun-2001 INITIALS
Date Printed 2 2Sheet of
Notes:
R324
1K0 SM
TR300FMMT597
TR301FMMT597
R315100R SM
R316100R SM
R319100R SM
TR314FMMT497
TR315FMMT497
R317100R SM
R318100R SM
R320100R SM
R32222R SM
0V_SIG
C317
470N PE
0V_SIG
0V_SIG
INPUT
0V_SIG
R3505R6 2W CF
C319100N PE
0V_HF 0V_LS
C313
100N SM
R341
330R SM
R342
330R SM
R343100R SM
R344100R SM
R3450R0 SM
R3460R0 SM
R33422K SM
R33622K SM
D301BAS16W SM
D302BAS16W SM
TR312FMMT497
TR304FMMT597
TR313FMMT497
TR302FMMT597
DZ3054V7 350MW SM
0V_HF
VIPROT
C320100U NP
TR305FMMT597
DZ3064V7 350MW SM
0V_HF
DCPROT
OUTPUT
0V_LS
0V_HF
VPOS
VNEG
0V_HF
0V_HF
DZ30015V 350MW SM
DZ30115V 350MW SM
C309100N SM
C310100N SM
C314100N SM
0V_SIG
0V_SIG
D3041N4003F
D3031N4003F
R30210K SM
R32722K SM
RV300100R PSET
C31210N SM
12
PL300
BIAS
R3251K0 SM
R3261K0 SM
ADJ BIAS
D300BAS16W SM
R30010K SM
R30910K SM
R30510K SM
R30610K SM
+ C30510U EL
MEASURE
TR318SAP15N
TR319SAP15P
R30110K SM
C315100N SM
R347
100R SM
R349
100R SM
R348
100R SM
R340100K SM
DZ3024V7 350MW SM
DZ3034V7 350MW SM
3
21
84
IC300A
TL072CD
5
67
IC300B
TL072CDR3284K7 SM
0V_HF
0V_SIG
TR311FMMT497
TR303FMMT597
TR310FMMT497
TR307FMMT597
INPUT FILTER V TO I AMP
DC SERVO
PNP CURRENT MIRROR
NPN CURRENT MIRROR
PRE DRIVER
PRE DRIVER
OUTPUT STAGE
OUTPUT STAGE
V-I PROTECTION
V-I PROTECTION
VI PROTECTSIGNAL TO MICRO
DC OFFSETDETECTION
DC OFFSET SIGNALTO MICRO
ZOBEL NETWORK
TR316FMMT497
TR308FMMT597
TR317FMMT497
R31110K SM
R31210K SM
R313
10K SM
R30310K SM
R30410K SM
R30710K SM
R3104K7 SM
R3294K7 SM
+
C300100U EL
+
C301100U EL
R338150R SM
R339150R SM
R30822K SM
R31410K SM
TR309FMMT497
TR306FMMT597
R32322R SM
R32122R SM
TP302
TP303
TP304
TP307
TP308
TP305
TP306
R33722R SM
R3311K5 SM
R332
1K8 SM
R330
1M0 SM
R333
3K3 SM
R335
3K3 SM
L300
2U2H LAC SMALL
C316470P PPW
C311100N PC
+ C31810U EL
TR321FMMT597
TR320FMMT497
+ C302100U EL 100V
+ C306100U EL 100V
R352470R 2W
R353470R 2W
BOOTSTRAP
BOOTSTRAP
R351
5R6 2W CF
C307
100P SM
C308
100P SM
+ C303100U EL
+ C304100U EL
R3541K0 SM
R3556K8 SM
TR322FMMT497
JR 30/1/01 PRODUCTION ISSUE 1.001_1018
01_1101 JR 4/6/01 DC OFFSET CHANGES 1.1