Arcam FMJ A-32 Schematic

Service Manual

ARCAM

FMJ A32, P35 & P35/3
Amplifi ers

A32

Issue 1.0

ARCAM

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

87654321

D

C

LEFT CHANNEL

C1
100N CD

SK1
PHONO2HG

EMC

1

0V_SIG

0V_SIG

Q_1

Q_2

L870C2_2.0.SCH

LEFT IN LEFT OUT

RIGHT CHANNEL
L870C3_2.0.SCH

RIGHT IN RIGHT OUT

Q_3

Q_4

+15V

Q_6

-15V

SK2
1
2
3
4
5
6
7
8

AMPCT8

0V_HF0V_SIG

Q_5

Q_7 Q_8

D

C

B

A

PCB1

PCB

L870PB_2

1 2 3 4 5 6 7 8

EL1

Update Box

UPDATE_BOX

DRAWING TITLE

A85 PHONO STAGE - TOP LEVEL

23425

A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

Notes:

Filename

G:\DATA\ECO\ECO AGENDA\01_1070 l870 A85 PHONO ISSUE2\L870_2.0.ddb - L870c1_2.0.PRJ

Circuit Diagram

01_1070 JAG 17/4/01 updated pcb and scm 2

00_1051 JAG 22/3/01 PRODUCTION ISSUE 1

ECO No. DESCRIPTION OF CHANGE

INITIALS

Date Printed

DATE

Drawn by:

JBR23-Apr-2001

1 3Sheet of

DRAWING NO.

L870C1

B

A

ISSUE

87654321

+

C102
100U SILMIC

R111
56K MF

R124

5K6 MF

R123
10R MF

C119

100P PP

C101

1N0 PP

C110

4N7 PP
C120

1N0 PP

C112

10N PP AX
C111

10N PP AX

R112
100K MF

C105
100N PE

Q_101

R113
100K MF

R114
100K MF

R115
15K MF

TL071CD

R101
100R MF

TR102
BC556B

TR108
BC546B

R116
2M2 MF

74

IC100

3

6

C118

2

10U NP

R117
2M2 MF

TR104
BC556B

D

TR100
BC556B

+

C100
22U EL

R109
12K MF

R110
12K MF

LEFT IN

C

R104
100R MF

SW100B
4PCO

5

6

C108
470P PPW

4

R108
47K MF

C109

100P PPW

TR106
2SA1085

R100
330R MF

TR101
BC556B

TR107
2SA1085

C115
1N3 PP

SW100D
4PCO

R105
100R MF

101112

Q_102

R102
100R MF

TR103
BC556B

D100
1N4148

C104

100N PE

0V_SIG0V_HF

C106
100N PE

+15V

TR109
BC546B

R118
22R MF

R119
22R MF

TR105
BC556B

C113

1U0 PE

0V_SIG

R122
39K MF

D

C

LEFT OUT

0V_SIG0V_SIG

B

TR110
BC546B

D101
1N4148

R120
22R MF

A

1 2 3 4 5 6 7 8

TR111
BC546B

D102
1N4148

R121
22R MF

DRAWING TITLE

A85 PHONO STAGE - LEFT CHANNEL

A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

C116

470P PPW

23425

TR112
BC546B

+

C103
100U SILMIC

Notes:

Filename

G:\DATA\ECO\ECO AGENDA\01_1070 l870 A85 PHONO ISSUE2\L870_2.0.ddb - L870C2_2.0.SCH

TR113
BC546B

TR114
BC546B

R106
100R MF

0V_SIG0V_HF

Circuit Diagram

C117
470P PPW

C107
100N PE

Q_103

-15V

01_1070 JAG 17/4/01 updated pcb and scm 2

00_1051 JAG 22/3/01 PRODUCTION ISSUE 1

ECO No. DESCRIPTION OF CHANGE

INITIALS

Date Printed

DATE

Drawn by:

JBR23-Apr-2001

2 3Sheet of

DRAWING NO.

L870C2

B

A

ISSUE

87654321

+

C202
100U SILMIC

R211
56K MF

R224

5K6 MF

9

R223
10R MF

C219

100P PP
C201

1N0 PP
C210

4N7 PP

C220

1N0 PP

C212

10N PP AX
C211

10N PP AX

R212
100K MF

C205
100N PE

Q_201

R213
100K MF

R214
100K MF

R215
15K MF

TL071CD

R201
100R MF

TR202
BC556B

TR208
BC546B

R216
2M2 MF

74

IC200

6

3
2

C218
10U NP

R217
2M2 MF

TR204
BC556B

D

TR200
BC556B

+

C200
22U EL

R209
12K MF

R210
12K MF

RIGHT IN

C

R204
100R MF

SW100A
4PCO

2

3

C208

470P PPW

1

R208
47K MF

C209

100P PPW

TR206
2SA1085

R200
330R MF

TR201
BC556B

TR207
2SA1085

R205
100R MF

C215
1N3 PP

7

SW100C
4PCO

8

Q_202

R202
100R MF

TR203
BC556B

D200
1N4148

C204

100N PE

0V_SIG0V_HF

C206
100N PE

+15V

TR209
BC546B

R218
22R MF

R219
22R MF

TR205
BC556B

C213

1U0 PE

0V_SIG

R222
39K MF

D

C

RIGHT OUT

C217

0V_SIG0V_SIG

B

TR210
BC546B

D201
1N4148

R220
22R MF

A

TR211
BC546B

D202
1N4148

R221
22R MF

DRAWING TITLE

A85 PHONO STAGE - RIGHT CHANNEL

23425

A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach

1 2 3 4 5 6 7 8

Cambridge CB5 9PB

470P PPW

TR212
BC546B

+

C203
100U SILMIC

Notes:

Filename

G:\DATA\ECO\ECO AGENDA\01_1070 l870 A85 PHONO ISSUE2\L870_2.0.ddb - L870C3_2.0.SCH

TR213
BC546B

TR214
BC546B

R206
100R MF

0V_SIG0V_HF

Circuit Diagram

470P PPWC216

C207
100N PE

Q_203

-15V

01_1070 JAG 17/4/01 updated pcb and scm 2

00_1051 JAG 22/3/01 PRODUCTION ISSUE 1

ECO No. DESCRIPTION OF CHANGE

INITIALS

Date Printed

DATE

Drawn by:

JBR23-Apr-2001

3 3Sheet of

DRAWING NO.

L870C3

B

A

ISSUE

87654321

D

C

FROM PREAMP

B

SK102

1
2
3
4

AMPCT4

0V_SIG

SK103

1
2
3
4
5
6
7
8
9
10
11
12
13
14

FFC 14W 2.54MM VER
8K7014

L882C3

SW100A
2PCO

2

PL100

2

C100
1N0 SM

PL101

2

5

L882C3_4.1.SCH

INPUT
0V_SIG

0V_HF
VPOS
VNEG

L882C4
L882C4_4.1.SCH

INPUT
0V_SIG

0V_HF
VPOS
VNEG

3

1

SK104B

TP100

0V_SIG

PHONO4G

1

6

TP103

F

N

TP104

TP105

TP106

VIPROT

DCPROT

OUTPUT0V_LS

VIPROT

DCPROT

OUTPUT0V_LS

TP107

TP108

TP101

TP102

TP109

VIPROT_L
DCPROT_L
LS L

VIPROT_R
DCPROT_R
LS R

TP110

TP117

L SIG
R SIG

0V_D
0V_PSU

STANDBY
VIPROT_L
VIPROT_R
0V_TRIG
DCPROT_L
DCPROT_R

LS L

0V_LS_L

LS R

LS L

TP111 TP113 TP115

0V_LS_L

LS R

TP112 TP114 TP116

0V_LS_R

L882C2
L882C2_4.1.SCH

0V_D +5V(D)
0V_PSU
PWRON

VIPROT_R VIPROT_uC
DCPROT_L

DCPROT_R

SK106
1
2
3
4

AMPCT4

4
5

SK105

HPSKT

RLY100A

RLY G5Z-2A-E

RLY100B

RLY G5Z-2A-E

2
3
1

6
7

THPROT_uCVIPROT_L

AC_PRES0V_TRIG

DCPROT_uC

TP118

TP120

SK100A

Top+

Top-

CAMCON_G

SK101A

Top+

Top-

CAMCON_G

VPOS
VNEG

RC5 IN

TRG IN

TP119

R105
100R 1W CF

L SIG
0V_SIG
0V_LS_L
0V_HF_L
+49V

-49V +5V_D

R SIG
0V_SIG
0V_LS_R
0V_HF_R
+49V

-49V

1

1

SK104A

F

EMC

N

PHONO4G

0V_SIG

SW100B
2PCO

4

INTEGRATED / PRE-POWER
MODE SELECT SWITCH

+5V_D

R100

+49V

10R MF

STANDBY
SPKR1 ON
SPKR2 ON
THERMPROT
VIPROT
DCPROT
AC PRESENT
TRIGGER
REMOTE
0V_D

+49V

-49V
THERMPROT
VIPROT
AC PRESENT
DCPROT
REMOTE
TRIGGER

R103
330R 1W CF

R104
330R 1W CF

R106
100R 1W CF

RLY101A

RLY G5Z-2A-E

RLY101B

RLY G5Z-2A-E

SK107
1
2
3
4

AMPCT4

SK100B

Bot+

Bot-

CAMCON_G

SK101B

Bot+

Bot-

CAMCON_G

D100

1N4003F

TR100
BD179

0V_TRIG

0V_D

RLY100C
RLY G5Z-2A-E

R107
220R SM

TR101
BD179

34

5 6

TP121

1 2

SP100

STAR_8

RLY101C
RLY G5Z-2A-E

R101
100R SM

R102
100R SM

R108
220R SM

78

D101
1N4003F

PCB

L882PB_4
EL

EARTH LEAD

EARTH LEAD

PCB

8M101

+49V

0V_SIG
0V_HF_R
0V_LS_R
0V_LS_L0V_HF_L
0V_PSU

SPKR1 ON

SPKR2 ON

0V_D

D

C

B

A

1 2 3 4 5 6 7 8

DRAWING TITLE

A85 amplifier and PSU - top sheet

23425

A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

Notes:

Filename

L882C1_4.1.PRJ

Circuit Diagram

02_E062 JBR 20/3/02 LDO REG FITTED TO IC201 4.1
02_E035 JBR 4/2/2002 FUSE VALUES UPRATED TO T4A 4.0

ECO No. DESCRIPTION OF CHANGE

Date Printed

INITIALS

20-Mar-2002

DATE

Drawn by:

J Reckless

1 4Sheet of

DRAWING NO.

L882C1

ISSUE

A

87654321

NEUTRAL

SK204

4

8

3

7

2

D

SK203
IEC3 NO RIVETS

SW200B
VOL SEL SLIDE

SW200A
VOL SEL SLIDE

F200

T4A

F201

T4A

SH200
EMCMAINS

BC200
TOOLING4.1

EMC Shield

Green

SK202
CAGECLAMP1

1

C205
3N3 MAINS

TP206

N E L

TP200

TP207

EARTH

C234

220N X2 CLASS

R231
1M5 VR25

LNE

C206
3N3 MAINS

LIVENEUTRAL

LIVE

NEUTRAL

LIVE

6

1 5

MOLEXPWR8

RLY200A

DPDT5V

C207

3N3 MAINS

RLY200B

DPDT5V

C208

3N3 MAINS

MAINS WIRING AND AUXILIARY SUPPLY

TP202

TP201

TP210

TP203

NF
VR200
VDR 115V

NF

VR201
VDR 115V

TX200

1 0V

115V

2
3

115V

4

TX 3VA 9301

HS200

+

C227
3300u 25V

TO220HS08REG

IC201
L4940V5

I

Vin

G

C225
100N CD

GND

Vout

+5V_D

O

TP205

HS

C226
100N CD

+5V(D)

+

C228
1000u 10V

0V_D

9VRMS

5

9V

0V

6
7

9V

0V

8

F202

T750mA SM

C224
100N CD

D200
1N4003F

D201
1N4003F

TP204

D202
1N4003F

D203
1N4003F

D

0V_D

+5V_D

9VRMS

R219
1K8 SM

C

B

A

STANDBY RELAY CONTROL

PWRON

+5V_D

TH200
PTH90DEG

R205
1K0 SM

R213
4K7 SM

R214
4K7 SM

IC202E

74HC14D

MICROPROCESSOR SIGNALS INTERFACE

IC202F

74HC14D

C219
10N SM

SK200

3
2

1

MOLEXPWR6

SK201A

JACK3.5X2

MODULATED RC5
REMOTE CONTROL INPUT

6
5

4

TP211

Near to PCB

R226
470R SM

3

R227
1K0 SM

~

BR200

1

BRGBU8D

+

~

-

4

TRG IN

R228
100K SM

DZ204
4V7 350MW SM

RC5 IN

TR204

IC202G
74HC14D

C214
10N SM

0V_D

BC849B

D206
BAS16W SM

C201
100N SM

1 2

3 4

C215
10N SM

0V_D

IC202A

74HC14D
IC202B

74HC14D

C202
100N SM

+

C229
22U EL

0V_D

+49V

TP208

+

C209
10,000u 63V

2

+

C210
10,000u 63V

POWER AMP SUPPLY

C211
100N PC

C212
100N PC

0V_PSU

0V_PSU

TP209

VPOS

VNEG

SK205

1
2
3
4
5
6

AMPCT6

-49V

R223
10K SM

R229
100K SM

C231
1N0 SM

+5V_D

84

IC200C
LM393A SM

C232
100N SM

+

C233
10U EL

VIPROT_L

VIPROT_R

CARRIER FILTER AND DEMODULATOR

L200

C200

27mH

680P PP

R208

IC200B

10K SM

7

LM393A SM

5
6

R209
10K SM

R224
1K8 SM

R230
1K5 SM

R225
1K8 SM

IC200A

2
3

LM393A SM

C230
10N SM

1

R222
10K SM

R211
10K SM

14

7

R201
1K0 SM

R202
1K0 SM

0V_TRIG

+49V

DCPROT_L

DCPROT_R

TR201
FMMT497

R218
10K SM

DZ207
15V 350MW SM

+

C223
10U EL

0V_TRIG

DRAWING TITLE

A85 amplifier - power supply and microcontroller interface

23425

A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

+5V_D

C235

1N0 SM

TR200
BD179

TP212

R210
10K SM

CAMCON_G
SK101C

CHASS

R217
10R SM

+

C222
10U EL

R212
4K7 SM

RLY200C
DPDT5V

R200
1K0 SM

TR203
FMMT497

D205
BAS16W SM C213

TR202
FMMT597

10N SM

SK201B

JACK3.5X2

TRIGGER OUTPUT
APPROX 13.5VDC
60mA MAX CURRENT

Far from PCB

0V_TRIG

0V_D

1 2 3 4 5 6 7 8

R203
1K0 SM

R204
1K0 SM

Notes:

Filename

L882C2_4.1.SCH

0V_D

Circuit Diagram

C216
10N SM

C217
10N SM

IC202C

5 6

74HC14D
IC202D

74HC14D

R215
4K7 SM

R216

89

4K7 SM

C221
10N SM

02_E062 JBR 20/3/02 LDO REG FITTED TO IC201 4.1
02_E035 JBR 4/2/2002 FUSE VALUES UPRATED TO T4A 4.0

ECO No. DESCRIPTION OF CHANGE

INITIALS

Date Printed

20-Mar-2002

1011

+5V_D

0V_D

+5V_D

0V_D

1213

TR205
BC856B

R206
1K0 SM

TR206
BC856B

R207
1K0 SM

R221
10R SM

DATE

R220
10R SM

C218
10N SM

C220
100N SM

Drawn by:

J Reckless

AC_PRES

THPROT_uC

C203
100N SM

C204
100N SM

VIPROT_uC

DCPROT_uC

2 4Sheet of

DRAWING NO.

L882C2

C

B

A

ISSUE

87654321

D

R315

TR300
FMMT597

C310
100N SM

C314
100N SM

TR314
FMMT497

100R SM

PNP CURRENT MIRROR

TR311
FMMT497

R328
4K7 SM

TP302

0V_SIG

84

IC300A

3

1

2

TL072CD

TP303

TR303
FMMT597

NPN CURRENT MIRROR

R317
100R SM

R300
10K SM

+

C300

DZ300

100U EL

15V 350MW SM

0V_HF

0V_SIG

C

INPUT

0V_SIG

0V_HF

B

INPUT FILTER V TO I AMP

R324
1K0 SM

DZ302
4V7 350MW SM

DZ303
4V7 350MW SM

0V_SIG

+

C301
100U EL

0V_HF

C309
100N SM

DZ301
15V 350MW SM

R309
10K SM

R327
22K SM

0V_SIG

C316
470P PPW

C317

470N PE

IC300B

7

TL072CD

0V_SIG

TP304

R322
22R SM

R337
22R SM

R319
100R SM

R333
3K3 SM

DC SERVO

R330

6

1M0 SM

5

0V_SIG

R331
1K5 SM

R332
1K8 SM

R335
3K3 SM

R320
100R SM

C307

100P SM

TR322
FMMT497

C311
100N PC

C308

100P SM

R316
100R SM

TR301
FMMT597

TR321
FMMT597

R355
6K8 SM

R354
1K0 SM

TR320
FMMT497

TR315
FMMT497

R318
100R SM

TR309
FMMT497

R338
150R SM

BOOTSTRAP

+

C302
100U EL 100V

R352
470R 2W MF 5%

470R 2W MF 5%
R353

+

C318
10U EL

+

C306
100U EL 100V

BOOTSTRAP

R339
150R SM

TR306
FMMT597

PRE DRIVER

TR310
FMMT497

R321
22R SM

C312
10N SM

R323
22R SM

TR307
FMMT597

PRE DRIVER

ADJ BIAS

RV300
100R PSET

D300
BAS16W SM

OUTPUT STAGE

TR318
SAP15N

TP305

R325
1K0 SM

R340
100K SM

R326
1K0 SM

TP306

TR319
SAP15P

OUTPUT STAGE

PL300

1
2

MEASURE
BIAS
(SET TO 16mV)

R341
330R SM

R342
330R SM

R343
100R SM

R344
100R SM

V-I PROTECTION

R334
22K SM

R347
100R SM

R345
0R0 SM

+

C303
100U EL

+

C304
100U EL

R346
0R0 SM

R348
100R SM

R336
22K SM

V-I PROTECTION

D301
BAS16W SM

TR312
FMMT497

TR304
FMMT597

D302
BAS16W SM

D303
1N4003F

DC OFFSET SIGNAL
TO MICRO

D304
1N4003F

R349
100R SM

DCPROT

TP308

DZ306
4V7 350MW SM

0V_HF

TR305
FMMT597

R302
10K SM

R310
4K7 SM

C315
100N SM

R301
10K SM

R329
4K7 SM

TR313
FMMT497

R303
10K SM

R304
10K SM

TR316
FMMT497

TR308
FMMT597

R311
10K SM

R312
10K SM

TR302
FMMT597

R305
10K SM

R306
10K SM

0V_HF

DC OFFSET
DETECTION

R307
10K SM

R313
10K SM

TR317
FMMT497

VI PROTECT
SIGNAL TO MICRO

TP307

+

C305
10U EL

R308
22K SM

C320
100U NP

VIPROT

DZ305
4V7 350MW SM

R351
10R MF

L300

2U2H LAC SMALL

R350
5R6 2W CF

ZOBEL NETWORK

C319
100N PE

0V_HF 0V_LS

R314
10K SM

C313

100N SM

VPOS

OUTPUT

0V_LS

0V_HF

VNEG

D

C

B

A

A

DRAWING TITLE

A85 amplifier - power output stage left

23425

A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

1 2 3 4 5 6 7 8

Notes:

Filename

L882C3_4.1.SCH

Circuit Diagram

02_E062 JBR 20/3/02 LDO REG FITTED TO IC201 4.1
02_E035 JBR 4/2/2002 FUSE VALUES UPRATED TO T4A 4.0

ECO No. DESCRIPTION OF CHANGE

Date Printed

INITIALS

20-Mar-2002

DATE

Drawn by:

J Reckless

3 4Sheet of

DRAWING NO.

L882C3

ISSUE

87654321

D

R415

TR400
FMMT597

C410
100N SM

C414
100N SM

TR414
FMMT497

100R SM

PNP CURRENT MIRROR

TR411
FMMT497

R428
4K7 SM

TP402

0V_SIG

84

IC400A

3

1

2

TL072CD

TP403

TR403
FMMT597

NPN CURRENT MIRROR

R417
100R SM

R400
10K SM

+

C400

DZ400

100U EL

15V 350MW SM

0V_HF

0V_SIG

C

INPUT

0V_SIG

0V_HF

B

INPUT FILTER V TO I AMP

R424
1K0 SM

DZ402
4V7 350MW SM

DZ403
4V7 350MW SM

0V_SIG

+

C401
100U EL

0V_HF

C409
100N SM

DZ401
15V 350MW SM

R409
10K SM

R427
22K SM

C416
470P PPW C411

0V_SIG

C417

470N PE

IC400B

7

TL072CD

0V_SIG

TP404

R422
22R SM

R437
22R SM

R419
100R SM

R433
3K3 SM

DC SERVO

R430

6

1M0 SM

5

0V_SIG

R431
1K5 SM

R432
1K8 SM

R435
3K3 SM

R420
100R SM

C407

100P SM

TR422
FMMT497

100N PC

C408

100P SM

R416
100R SM

TR401
FMMT597

TR421
FMMT597

R455
6K8 SM

R454
1K0 SM

TR420
FMMT497

TR415
FMMT497

R418
100R SM

TR409
FMMT497

R438
150R SM

BOOTSTRAP

+

C402
100U EL 100V

R452
470R 2W MF 5%

470R 2W MF 5%

R453

+

C418
10U EL

+

C406
100U EL 100V

BOOTSTRAP

R439
150R SM

TR406
FMMT597

PRE DRIVER

TR410
FMMT497

R421
22R SM

C412
10N SM

R423
22R SM

TR407
FMMT597

PRE DRIVER

ADJ BIAS

RV400
100R PSET

D400
BAS16W SM

OUTPUT STAGE

TR418
SAP15N

TP405

R425
1K0 SM

R440
100K SM

R426
1K0 SM

TP406

TR419
SAP15P

OUTPUT STAGE

PL400

1
2

MEASURE
BIAS
(SET TO 16 mV)

R441
330R SM

R442
330R SM

R443
100R SM

R444
100R SM

V-I PROTECTION

R434
22K SM

R447
100R SM

R445
0R0 SM

+

C403
100U EL

+

C404
100U EL

R446
0R0 SM

R448
100R SM

R436
22K SM

V-I PROTECTION

D401
BAS16W SM

TR412
FMMT497

TR404
FMMT597

D402
BAS16W SM

D403
1N4003F

DC OFFSET SIGNAL
TO MICRO

D404
1N4003F

R449
100R SM

DCPROT

TP408

DZ406
4V7 350MW SM

0V_HF

TR405
FMMT597

R402
10K SM

R410
4K7 SM

C415
100N SM

R401
10K SM

R429
4K7 SM

TR413
FMMT497

R403
10K SM

R404
10K SM

TR416
FMMT497

TR408
FMMT597

R411
10K SM

R412
10K SM

TR402
FMMT597

R405
10K SM

R406
10K SM

0V_HF

DC OFFSET
DETECTION

R407
10K SM

R413
10K SM

TR417
FMMT497

VI PROTECT
SIGNAL TO MICRO

TP407

+

C405
10U EL

R408
22K SM

C420
100U NP

VIPROT

DZ405
4V7 350MW SM

R451
10R MF

L400

2U2H LAC SMALL

R450
5R6 2W CF

ZOBEL NETWORK

C419
100N PE

0V_HF 0V_LS

R414
10K SM

C413

100N SM

VPOS

OUTPUT

0V_LS

0V_HF

VNEG

D

C

B

A

A

DRAWING TITLE

A85 amplifier - power output stage right

23425

A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

1 2 3 4 5 6 7 8

Notes:

Filename

L882C4_4.1.SCH

Circuit Diagram

02_E062 JBR 20/3/02 LDO REG FITTED TO IC201 4.1
02_E035 JBR 4/2/2002 FUSE VALUES UPRATED TO T4A 4.0

ECO No. DESCRIPTION OF CHANGE

Date Printed

INITIALS

20-Mar-2002

DATE

Drawn by:

J Reckless

4 4Sheet of

DRAWING NO.

L882C4

ISSUE

A32 FMJ DISPLAY PCB

87654321

D

D

L928CT_B.1
L928CT_2_B.3.SCH

MICRO

C

CHASSIS 1
(BY SK3)

0V_D

C39
1N0 SM

FD_1

FIDUCIAL

FIX7
FIXING HOLE 3.5

FIX1
FIXING HOLE 3.5

FD_2

FIDUCIAL

FIX2
FIXING HOLE 3.5

0V_D 0V_D 0V_D 0V_D

FIX8
FIXING HOLE 3.5

C40
1N0 SM

FIX10
FIXING HOLE 3.5

C41
1N0 SM

FIX9
FIXING HOLE 3.2

FIX3
FIXING HOLE 3.5

FIX5
FIXING HOLE 3.5

C43
1N0 SM

FIX6
FIXING HOLE 3.5

FIX11
FIXING HOLE 3.5

C44
1N0 SM

FIX13
FIXING HOLE 3.5

C

C38
1N0 SM

0V_D

FIX12
FIXING HOLE 3.2

B

CHASSIS 2
(BY SK1)

0V_D

C45
1N0 SM

PCB1

PCB

L928PB_B

C46
1N0 SM

C47
1N0 SM

0V_D0V_D

CHASSIS 3
(BY SK2)

C48
1N0 SM

C49
1N0 SM

0V_D0V_D

C37
1N0 SM

0V_D

B

A

DRAWING TITLE

A32 FMJ AMP DISPLAY PCB

WAF 26/9/01 STICKY PADS RENUMBERED B.3

Circuit Diagram

23425

A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

1 2 3 4 5 6 7 8

Notes:

ECO No. DESCRIPTION OF CHANGE

Filename

J:\Released_Documents\Native_format_files\Protel_DDB\L928_B.3.Ddb - Documents\L928CT_1_B.3.PRJ

Date Printed

JBR 10/9/01 PRE PRODUCTION RELEASE B.2
WAF 9/08/01 UPDATED PROTOTYPE
CL INITIAL PROTOTYPE25/04/01 A.0

INITIALS

10-Oct-2001

DATE

Drawn by:

CL

1 2Sheet of

DRAWING NO.

A

B.0

ISSUE

L928CT1

87654321

SP7

LED

SPACER

PHONO/

AV DVD CD TUNER VCR

Q1
BC847B

D

R29
10K SM R30

R33

330R SM

R34
150R SM

Q2
BC847B

10K SM

R1
10K SM

SW6

TACTSW A1505

R2
10K SM

SW12

TACTSW A1505

R3
10K SM

SW11

TACTSW A1505

R4
10K SM

SW8

TACTSW A1505

R5
10K SM

SW7

TACTSW A1505

R6
10K SM

SW13

TACTSW A1505

R7
10K SM

SW14

TACTSW A1505

R8
10K SM

SW15

TACTSW A1505

POWER SP1SP2TONE DOWN UP ENTERMODE RECORD SELECT

R68
10K SM

SW17

TACTSW A1505

R9
10K SM

SW16
TACTSW A1505

R10
10K SM

SW1

TACTSW A1505

R11
10K SM

SW4

TACTSW A1505

R12
10K SM

SW2

TACTSW A1505

AUX TAPE

R13
10K SM

SW5

TACTSW A1505

R14
10K SM

SW3

TACTSW A1505

R15
10K SM

SW10

TACTSW A1505

R16
10K SM

SW9

TACTSW A1505

0V_D

IND12

LED11

IND11

BUT11

BUT2

BUT3

BUT4

IC7B

BUT13

BUT6

BUT7

BUT8

BUT17

BUT9

BUT12

BUT14

BUT1

BUT10

BUT5

BUT15

BUT16

SPACER F195

R17
330R SM

Q_65 Q_66 Q_67 Q_68 Q_69 Q_70 Q_71 Q_72 Q_73 Q_74

LED7

IND10

LED GREEN

SP8

LED

SPACER

SPACER F195

R18
330R SM

LED8

IND2

LED GREEN

SP6

LED

SPACER

SPACER F195

R19
330R SM

LED6

IND8

LED GREEN

SP3

LED

SPACER

SPACER F195

R20
330R SM

IND1

LED GREEN

LED3

LED GREEN

SP10

LED

SPACER

SPACER F195

R21
330R SM

LED10

IND5

LED GREEN

SP9

LED

SPACER

SPACER F195

R22
330R SM

LED9

IND6

SP1

LED

SPACER F195

R25
330R SM

IND9

LED GREEN

SPACER

LED1

LED GREEN

SP4

LED

SPACER

SPACER F195

R24
330R SM

LED4

IND4

SP2

LED

SPACER

SPACER F195

R23
330R SM

IND3

LED GREEN

SP5

SPACER F195

LED2

LED GREEN

LED

SPACER

+5V

R31
330R SM

LED5

IND7

D

5

R

LED RED/GRN 3MM

G

6

LM393A SM

0V_D

7

+5V

0V_D

LEFTAUDIO

10U EL SM
C11

+

R41

100K SM

+5V

R43
100K SM

3

Q_35

IC7A
LM393A SM

1

+5V

R49
10K SM

R480R0 SM

TRANSMIT

RECEIVE

R50
10K SM

Q_34

SAMHOLD

+5V

R37
10K SM

2V7

1

5
6

IC6A

IC6B

LM393A SM

0V5

2
3

7

SAMDATA

0V_D

R40
4K7 SM

R38
1K2 SM

2

Q_53

R42

100K SM

C

R44
100K SM

Q_47

+5V

C9

LM393A SM

0V_D

100N SM

Programming adaptor

PR_GND
PR_TXD

PR_MD
PR_RESET

+5V

Q_39

0V_D

C7

100N SM

0V_D

TRANSMIT

RESPIN

SAMHOLD

Q_37

X1
16MHZ SM

Q_38

+5V

IC2

3
2

4
1

DS1233 SM

Vcc
Res

Gnd
Gnd

0V_D

To preamp board
SK3

22

Q_1

21

Q_2

20

Q_3

19

Q_4

18

Q_5

17

Q_6

16

Q_7

15

Q_8

14

Q_9

13
12

Q_10

11
10

Q_11

9

Q_12

8

Q_117

7

Q_14

6

Q_118

5

Q_15

4

Q_119

3

Q_16

2

Q_120

1

Q_17

FFC 22W 1MM HOR

SK4

F1CLOCK

F2CLOCK

PHASEA

PHASEB

SEL8

SEL9

MUTE

TONE

ACPRESENT

IRIN

DCPROT

VIPROT

Q_55

RECEIVE
VPROG

PB0

PR_VCC
PR_RXD

PR_VPP

PR_PMODE

12
34
56
78
910

1112

+5V

+

C14
10U EL SM

0V_D

+5V

Q_56

C4
100N SM

Q_86
Q_87
Q_88
Q_89
Q_90
Q_91

0V_D

C50B 100PX4 SM
C50D 100PX4 SM
C51B 100PX4 SM
C51D 100PX4 SM
C52B 100PX4 SM
C52D 100PX4 SM
C53B 100PX4 SM
C53D 100PX4 SM
C54B 100PX4 SM
C54D 100PX4 SM
C55B 100PX4 SM
C55D 100PX4 SM

AVcc

MD2
MD1
MD0

P6.4/RD

P6.3/AS

Vcc

XTAL

EXTAL

Vss

NM1

RES

STBY

Vss

A13/P2.5

H8/3048F

Q_98

C3
100N SM

IC1

75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51

0V_D

0V_D

+5V

C17

+5V

R55
10K SM

Q_51

D3
BAS16W SM

Q_52

B

DISPDAT

DISPCLK
DISPBLK

DISPLAT

C31
10P SM

R64
100R SM

R65
100R SM
R67

100R SM

C32
10P SM

Q_44

Q_46

Q_45

R66
100R SM

Q_42

Q_43

100N SM

PB0
SEL7
SEL6
SEL5
SEL4
SEL3
SEL2
SEL1
VPROG

TRANSMIT
RECEIVE

TONEID
SDATA

SLOAD
SCLK

0V_D

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25

Vcc
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
Vpp/RESO
Vss
TxD0/P9.0
TxD1/P9.1
RxD0/P9.2
RxD1/P9.3
IRQ4/SCK0/P9.4
IRQ5/SCK1/P9.5
D0/P4.0
D1/P4.1
D2/P4.2
D3/P4.3
Vss
D4/P4.4
D5/P4.5
D6/P4.6

0V_D

100

PA7

D7/P4.726D8/P3.0

99

PA6

97

98

PA4

PA5

D9/P3.1

D10/P3.2

96

PA3

D11/P3.3

93

94

95

PA1

PA2

D12/P3.4

D13/P3.5

92

PA0

D14/P3.6

89

90

91

Vss

P8.4/CS0

P8.3/IRQ3

H8/3048F

D15/P3.7

Vcc35A0/P1.0

86

87

88

AVss

P8.0/IRQ0

P8.1/IRQ1

P8.2/IRQ2

A1/P1.1

A2/P1.2

A3/P1.339A4/P1.4

82

83

84

85

P7.5/AN5

P7.6/AN6/DA0

P7.7/AN7/DA1

A5/P1.5

A6/P1.642A7/P1.7

79

80

81

P7.2/AN2

P7.3/AN3

P7.4/AN4

Vss44A8/P2.045A9/P2.146A10/P2.2

76

77

78

Vref

P7.0/AN0

P7.1/AN1

P6.6/LWR

P6.5/HWR

CLKOUT

P6.2/BACK

P6.1/BREQ

P6.0/WAIT

P5.3/A19
P5.2/A18
P5.1/A17
P5.0/A16
P2.7/A15
P2.6/A14

A11/P2.3

A12/P2.4

0V_D

+5V

R51
100R SM

Q_41

Q_40

+5V

R32
10K SM

5

6WP7

IC5
24C02 SM

SCL

VSS

SDA

VDD

A0

8

C8
100N SM

4

A

C5
100N SM

0V_D

27

28

Q_99

Q_100

BUT13

IND10

29

30

Q_101

Q_102

BUT11

IND8

31

32

Q_103

Q_104

BUT14

IND4

33

34

Q_105

Q_106

BUT12

IND9

36

37

Q_107

Q_108

BUT10

IND7

38

Q_109

Q_110

BUT15

IND5

40

41

Q_111

Q_112

BUT16

IND6

43

Q_113

Q_114

IND12

IND11

Q_96

Q_97

IND2

BUT4

47

48

Q_94

Q_95

IND1

BUT5

49

50

Q_92

Q_93

BUT3

BUT1

1A12A23

0V_D

CHASSIS 1

HEADER 7X2HORIZ

R26

10K SM

STANDBY
SP1ON
SP2ON
THERMPROT

RESPIN

SAMTX2
SAMRX2
BUT17

BUT9
BUT8
BUT7
BUT6
BUT2
IND3

0V_D

C50A 100PX4 SM
C50C 100PX4 SM
C51A 100PX4 SM
C51C 100PX4 SM
C52A 100PX4 SM
C52C 100PX4 SM
C53A 100PX4 SM
C53C 100PX4 SM
C54A 100PX4 SM
C54C 100PX4 SM
C55A 100PX4 SM
C55C 100PX4 SM

1314

D2
BAS16W SM

+5V

R35
10K SM

SAMTX2

SAMRX2

C1
18P SM

0V_D

C2
18P SM

DS1233

SEL1
SEL2
SEL3
SEL4
SEL5
SEL6
SEL7
SEL8
SEL9

LEFTAUDIO

MUTE
TONE

TONEID

SDATA
SLOAD

SCLK

Q_115

R72

Q_21 Q_22

R36
10K SM

Q_59

2V7

+5V

R45
10K SM

IC8B

7

LM393A SM

PLACE ONE ON TOP OF
THE OTHER UNDER RX1

C12

100N SM

R70

R71

2R2 SM

2R2 SM

2R2 SM

0V52V7

IC8A

3
2

LM393A SM

R69

2R2 SM

R39
2K2 SM

0V_D

1

0V5

6
5

SAMDATA
SAMBUSY

Q_19

Q_20

+5V

+

C33
220U EL

+

0V_D

(FIT CLOSE TO SK1)

+SUP VFD_VDD2

R54
3K3 MF

D1
ZENER 400MW 33V

+5V

R47
4K7 SM

SAMBUSY

R46
1K2 SM

0V_D

Q_54

SP

IR RX

SUPPORT PAD

IR RX SUPPORT PAD

SBX1610-52/PIC-26043TM2

SP103

IR RX

SUPPORT PAD

IR RX SUPPORT PAD

+5V

SK2

1
2
3
4
5

AMPCT5

0V_D

C34
220U EL

Q5

BD179 NPN TO-126

Q_75

+

C26
10U EL SM

DRAWING TITLE

A32 FMJ AMP DISPLAY PCB

23425

2

RX1

O/P
O/P

Case

0V_D

0V_D

+5V

3

+5V

Case

Notes:

IROUT

GND

GND +5V

1

SW18
ALPS_ENCODER

4

5

C60C 100PX4 SM
C60A 100PX4 SM
C61C 100PX4 SM
C61A 100PX4 SM
C62C 100PX4 SM
C62A 100PX4 SM
C63C 100PX4 SM
C63B 100PX4 SM
C63A 100PX4 SM

CHASSIS 2

Q_23

+

C28
10U EL SM

R76
10K SM

C6
100N SM

A
B

C

C13

100N SM

R75
10K SM

+5V

R27

R2810K SM

10K SM

1
2

3

0V_D

C60D 100PX4 SM
C60B 100PX4 SM
C61D 100PX4 SM
C61B 100PX4 SM
C62D 100PX4 SM
C62B 100PX4 SM
C63D 100PX4 SM

84

IC6C

LM393A SM

Circuit Diagram

R73
10K SM

Q3
BC847B

0V_D

Q_58
Q_57

PHASEA
PHASEB

To power amp / PSU

FFC 14W 2.54MM HOR

C10
100N SM

+5V

R74
10K SM

IRIN
Q4

BC847B

SK1

14
13
12
11
10
9
8
7
6
5
4
3
2
1

84

IC7C

LM393A SM

+5V

R56
10K SM

R57
10K SM

0V_D

+5V

0V_D

F1 to F2 = 4Vac 150mA
VDD2 = 40Vdc 20mA

Graphics Display

+5V

17

IRIN

SP101

DOUBLE SIDED
STICKY PAD

10 X 15MM
STICKY PAD DS 10X15MM
SP102

DOUBLE SIDED

STICKY PAD

10 X 15MM
STICKY PAD DS 10X15MM

DC1

DISP1
B1013

F11F12F13SIN4VDD15SOUT6LAT7BLK8CLK9VSS10VSS11VDD212F215F216F2

DISPLAY CRADLE

E916PM

DISPLAY CRADLE E916PM

F1CLOCK

Q_50

F2CLOCK

DC2

DISPLAY CRADLE

E916PM

DISPLAY CRADLE E916PM

R52

Q_79

Q_78

100R SM

R53
100R SM

IC11A
AD8532 SM

3

2

5
6

IC11B
AD8532 SM

Q_82

1

Q_80

7

Q_81

DISPDAT

DISPLAT

Q_49

R58
0R0 SM

R59
0R0 SM

0V_D

DISPCLK

DISPBLK

Q_83

Q_84

Q_85

Q_48

+SUP

Q_121

STANDBY
SP1ON
SP2ON
THERMPROT
VIPROT
DCPROT
ACPRESENT

IRIN

Q_122
Q_123
Q_124
Q_125
Q_126
Q_127
Q_128

Q_129

+5V

Q_64

C15
100N SM

84

IC8C

LM393A SM

C16
100N SM

84

IC11C

AD8532 SM

Q_116

C25
100N SM

+

C29
100U EL SM

0V_D

WAF 26/9/01 STICKY PADS RENUMBERED B.3

JBR 10/9/01 PRE PRODUCTION RELEASE B.2
WAF 9/08/01 UPDATED PROTOTYPE

VFD_VDD2

C

B

A

B.0

A & R Cambridge Ltd.
Pembroke Avenue

0V_D

1 2 3 4 5 6 7 8

Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

ECO No. DESCRIPTION OF CHANGE

Filename

J:\Released_Documents\Native_format_files\Protel_DDB\L928_B.3.Ddb - Documents\L928CT_2_B.3.SCH

Date Printed

CL 25/04/01 INITIAL PROTOTYPE

INITIALS

10-Oct-2001

DATE

Drawn by:

CL

2 2Sheet of

DRAWING NO.

L928CT2

A.0

ISSUE

4321

D

C

D

C

Main signal path
L937C2_1.1.SCH

B

Power supply
L937C3_1.1.SCH

B

USE EXCLUDE NF WHEN USING RUNOUT SHEET PROGRAM

DRAWING TITLE

Integrated amplifier preamp

PCB1

A

PCB

L937PB_1

23425

A & R Cambridge Ltd.
Pembroke Avenue

Notes:

Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

1 2 3 4

Filename

J:\Change_Control\ECO_AGENDA\01_E014 Fuse changes on A32 preamp\L937_1.1.ddb - Documents\Schematic\L937C1_1.0.PRJ

Circuit Diagram

01_E014 JBR 28/11/01 Fuses uprated to 2A 1.1
01_1142 JBR 14/8/01 First production release 1.0

ECO No. DESCRIPTION OF CHANGE

Date Printed

INITIALS

28-Nov-2001

DATE

Drawn by:

JBR

1 3Sheet of

DRAWING NO.

L937C1

ISSUE

A

87654321

D100

+15V -15V

BAV99W DUAL SM

SK2A

CDL1 CDL

0V_SIG

D101
BAV99W DUAL SM

D102
BAV99W DUAL SM

0V_SIG

TUNR1

D106
BAV99W DUAL SM

D107
BAV99W DUAL SM

0V_SIG

D108
BAV99W DUAL SM

D112
BAV99W DUAL SM

0V_SIG

D113
BAV99W DUAL SM

D114
BAV99W DUAL SM

0V_SIG

D115
BAV99W DUAL SM

D116
BAV99W DUAL SM

0V_SIG

D117
BAV99W DUAL SM

R100
1K0 SM

R101
1K0 SM

R102
1K0 SM

R125
1K0 SM

R126
1K0 SM

R127
1K0 SM

R156
1K0 SM

R157
1K0 SM

R158
1K0 SM

R189
1K0 SM

R190
1K0 SM

R191
1K0 SM

0V_SIG

0V_SIG

0V_SIG

0V_SIG

0V_SIG

0V_SIG

0V_SIG

0V_SIG

0V_SIG

0V_SIG

0V_SIG

0V_SIG

R103
100K SM

CDR

R104
100K SM

TUNL

R105
100K SM

TUNR

R128
100K SM

AVL

R129
100K SM

AVR

R130
100K SM

DVDL

R159
100K SM

DVDR

R160
100K SM

TAPEIL

R161
100K SM

TAPEIR

R192
100K SM

VCRIL

R193
100K SM

VCRIR

R194
100K SM

CD L

470P FKP2

CD R

0V_SIG

TUNER L

TUNER R

0V_SIG

AV L

AV R

0V_SIG

DVD L

DVD R

TAPE IN L

TAPE IN R

VCR IN L

VCR IN R

C101

C102
470P FKP2

C103
470P FKP2

C122
470P FKP2

C123
470P FKP2

C124
470P FKP2

C140
470P FKP2

C141
470P FKP2

C142
470P FKP2

C161
470P FKP2

C162
470P FKP2

C163
470P FKP2

CD INPUT

1

F

EMC

N

C100
1N0 SM

0V_SIG

D

TUNER INPUT

CDR1

PHONO4G

+15V -15V

+15V -15V

SK2B

TUNL1

F

N

PHONO4G

+15V -15V

+15V -15V

C

AV INPUT

SK3A

AVL1

1

F

EMC

N

C121
1N0 SM

0V_SIG

DVD INPUT

B

TAPE INPUT

AVR1

PHONO4G

+15V -15V

+15V -15V

SK3B

DVDL1

F

N

DVDR1

PHONO4G

+15V -15V

+15V -15V

SK4A

TAPEIL1

1

F

EMC

N

C139
1N0 SM

0V_SIG

VCR INPUT

A

C160
1N0 SM

0V_SIG

TAPEIR1

PHONO4G

+15V -15V

+15V -15V

SK5A

VCRIL1

1

F

EMC

N

VCRIR1

PHONO4G

+15V -15V

1 2 3 4 5 6 7 8

+15V

-15V

+15V

-15V

+15V

-15V

0V_SIG

C106
100N SM

C107
100N SM

C125
100N SM

C126
100N SM

C127
100N SM

C128
100N SM

0V_SIG

0V_SIG

+15V

C104
100N SM

C105
100N SM

-15V

0V_SIG

0V_SIG

0V_SIG

+15V

-15V

+15V

C145
100N SM

C146
100N SM

-15V

AUX INPUT

C164
1N0 SM

VCR2

C143
100N SM

C144
100N SM

PHONO2G

AUX L
CD L
TUNER L
AV L
DVD L

VCR IN L
MODULE L

0V_SIG

AUX R
CD R
TUNER R
AV R
DVD R

VCR IN R
MODULE R

TAPE 2

AUX L
CD L
TUNER L
AV L
DVD L
TAPE IN L

MODULE L

VCR01

AUX R
CD R
TUNER R
AV R
DVD R
TAPE IN R

MODULE R

AUX L
CD L
TUNER L
AV L
DVD L
TAPE IN L
VCR IN L
MODULE L

LIST2

AUX R
CD R
TUNER R
AV R
DVD R
TAPE IN R
VCR IN R
MODULE R

LISTEN0

LISTEN1

LISTEN2

D118
BAV99W DUAL SM

AUXIL1

1

TAPE 1

TAPE 2

TAPE 0

TAPE 1

LIST1

TAPE 0

0V_SIG

0V_SIG

VCR 2

0V_SIG

VCR 1

VCR 2

0V_SIG

LIST0

VCR 1

R162
22K SM

R163
22K SM

R164
22K SM

R165
22K SM

R166
22K SM

R167
22K SM

R168
22K SM

R169
22K SM

TAP0

TAP1

TAP2

TAPE0

TAPE1

TAPE2

VCR11

VCR21

VCR0

VCR1

+15V -15V

SK6

F

EMC

N

0V_SIG

AUXIR1

+15V -15V

D119
BAV99W DUAL SM

+5V

+5V

+5V

VCR 0

+5V

VCR 0

R195
1K0 SM

R196
1K0 SM

-15V

-15V

LISTEN 0
LISTEN 1
LISTEN 2

0V_SIG

LISTEN 0
LISTEN 1
LISTEN 2

0V_SIG

Z100
4
5
6
7

12
11
10

9
2

1

16
15

14

3

DG408DY

Z101
4
5
6
7

12
11
10

9
2

1

16
15

14

3

DG408DY

Z102
4
5
6
7

12
11
10

9
2

1

16
15

14

3

DG408DY

Z103
4
5
6
7

12
11
10

9
2

1

16
15

14

3

DG408DY
R170

22K SM
R171

22K SM
R172

22K SM
R173

22K SM

R174
22K SM

R175
22K SM

R176
22K SM

R177
22K SM

AUXL

0V_SIG

0V_SIG

X0
X1
X2
X3
X4
X5
X6
X7

EN
A0
A1
A2

GND
V-

X0
X1
X2
X3
X4
X5
X6
X7

EN
A0
A1
A2

GND
V-

X0
X1
X2
X3
X4
X5
X6
X7

EN
A0
A1
A2

GND
V-

X0
X1
X2
X3
X4
X5
X6
X7

EN
A0
A1
A2

GND
V-

+5V

+5V

R197
100K SM

AUXR

R198
100K SM

-15V

-15V

AUX R

AUX L

V+

V+

V+

V+

4
5
6

7
12
11
10

9

2

1
16
15

14

3

4

5

6

7
12
11
10

9

2

1
16
15

14

3

+15V
13
8

D

0V_SIG

+15V-15V
13
8

D

0V_SIG

+15V
13
8

D

0V_SIG

+15V-15V
13
8

D

0V_SIG

Z104

X0
X1
X2
X3
X4
X5
X6
X7

EN
A0
A1
A2

GND
V-

DG408DY
Z105

X0
X1
X2
X3
X4
X5
X6
X7

EN
A0
A1
A2

GND
V-

DG408DY

SK103

1
2
3
4
5
6
7

TO PHONO PCB

8

AMPCT8

C165
470P FKP2

C166
470P FKP2

R106
1M0 SM

R107
1M0 SM

R131
1M0 SM

R132
1M0 SM

V+

V+

0V_SIG

D

D

AUX R

AUX L

13
8

13
8

+15V

+15V

+15V1

0V_HF

0V_SIG

0V_SIG

-15V1

-15V

3
2

5
6

3
2

5
6

C147
100N PE

C167
100N PE

+15V

AUXR1

AUXL1

+15V -15V

D103
Z109A
TL072 SM

Z109B
TL072 SM

Z110A
TL072 SM

Z110B
TL072 SM

C148

22P SM
R178
22K SM

2

Z115A

3

OPA2134PA SM

C149

22P SM
R179
22K SM

2

Z116A

3

OPA2134PA SM

Z109C

TL072 SM

Z113C

TL072 SM

BAV99W DUAL SM

R108

1

47R SM

C108
100P SM

+15V -15V

D104

BAV99W DUAL SM

R109

7

47R SM

C109
100P SM

+15V -15V

D109

BAV99W DUAL SM

R133

1

47R SM

C129
100P SM

+15V -15V

D110

BAV99W DUAL SM

R134

7

47R SM

C130
100P SM

Z115_1A

1

R180
100K SM

R199
100K SM

84

-15V

84

-15V

7

OPA2134PA SM
+15V

1

7

OPA2134PA SM

C168
100N SM

0V_SIG 0V_SIG 0V_SIG 0V_SIG

C169
100N SM

-15V2

C170
100N SM

0V_SIG 0V_SIG 0V_SIG 0V_SIG 0V_SIG

C171
100N SM

470N PE

+

+

-15V

470N PE

C150

Z115B

C188
10U EL

C189
10U EL

C151

Z116B

TAPEO1

0V_SIG

TAPE02

VCRO1

0V_SIG

VCR02

Z116_1A

84

Z110C

TL072 SM

84

Z114C

TL072 SM

SK4B

PHONO4G

VCR OUTPUT

SK5B

PHONO4G

6
5

0V_SIG

0V_SIG

6
5

0V_SIG

TAPE OUTPUT

F

N

F

N

R183
1M0 SM

R184
1M0 SM

C172
100N SM

C173
100N SM

C174
100N SM

C175
100N SM

TONE*

C152
100N SM

0V_SIG

TONE*

84

Z111C

TL072 SM

84

Z115C

OPA2134PA SM

C176
100N SM

C177
100N SM

C178
100N SM

C179
100N SM

1
2
3
4

6
7
8

+

C110
100U EL

0V_SIG

+

C131
100U EL

0V_SIG

Z106

SEL1
D1
S1
V­GND5VL
S4
D4
SEL4

DG413DY

+15V2

Z112C

TL072 SM

OPA2134PA SM

SEL2

SEL3

+15V

84

84

Z116C

+5V

R110
2K2 SM

R112
22K SM

R111
2K2 SM

Z115_1B

+5V

R135
2K2 SM

R137
22K SM

R136
2K2 SM

Z116_1B

TONE*

+5V

C180
100N SM

C181
100N SM

C182
100N SM

C183
100N SM

/TONE

TONE*

OPA2134PA SM

16
15

D2

14

S2

13

V+

12
11

S3

10

D3

9

Z111_3

Z113_3

+15V-15V

0V_SIG

+15V

84

Z117C

R113
22K SM

+

R138
22K SM

+

Z111A
TL072 SM

3
2

C111
10U CERAFINE

Z113A
TL072 SM

3
2

C132
10U CERAFINE

+

C154
10U EL

Z107_4

C153
100N SM

Z107_13

0V_SIG

0V_SDATA

0V_SLOAD

0V_SCLK

C184
100N SM

C185
100N SM

Z111_7

Z113_7

1

1

0V_SIG

R182
100R SM

R200
2R2 SM
R201
2R2 SM
R202
2R2 SM

Z111_1

Z113_1

C155
100N SM

D105
BAV99W DUAL SM

0V_SIG

1618

Z108D
17

DS1844

5
6

D111
BAV99W DUAL SM

62

Z108B
7

DS1844

5
6

0V_SIG

C156
100N SM

1

0V_SIG

AVCC

SCLK

SDATA

SLOAD

+5V

C186

100N SM

0V_SIG

Z112_3

Z108_19

C113
470N PE

R115
2K7 SM

R116
2K7 SM

Z114_3

Z108_3

C134
470N PE

R140
2K7 SM

R141
2K7 SM

LFO

LMO
RFO

RMO

16

R181
10K SM

DS1844

0V_SIG

DS1844

0V_SIG

1519

53

+

C157
100U EL

3

2
14

15

Z107
VSDVC

Z108A
14

0V_SIG

Z108C
4

0V_SIG

0V_SIG

+

R117
5K6 SM

R142
5K6 SM

C187
10U EL

C114
CFKP2 63V 2N2

3
2

C135
CFKP2 63V 2N2

2

Z117A

3

OPA2134PA SM

6

Z117B

5

OPA2134PA SM

R114
22K SM

7
Z111B

TL072 SM

C112

470N PE

C192

470N PE

+5V

R139
22K SM

7
Z113B

TL072 SM

C133

470N PE

C193

470N PE

+5V

R185
22R SM

Z107_1

7

DVCC

4

LIN

5

LGND

13

RIN

12

RGND

DGND11XCS6DATA9CCLK10XMUTE8AGND

DRAWING TITLE

Integrated amplifier preamp - main signal path

23425

A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

Notes:

Filename

J:\Change_Control\ECO_AGENDA\01_E014 Fuse changes on A32 preamp\L937_1.1.ddb - Documents\Schematic\L937C2_1.0.SCH

Circuit Diagram

Z112A
TL072 SM

3
2

Z114A
TL072 SM

C136

22P SM

+15V

+

+

-15V

D120
BAS16W SM

R118
22K SM

R143
22K SM

C190
10U EL

C191
10U EL

C158
22P SM

1

C159
22P SM

7

C115

22P SM

1

Z112B
TL072 SM

Z112_1

5

1

6

7

Z112_7

R119
22K SM

R120
22K SM

+

0V_SIG

Z114B

Z114_1

TL072 SM

5

7

6

+15V -15V

0V_SIG

SK102_1

R186
47R SM

SK102_3

R187
47R SM

0V_SIG

+5V

+-RLY100C

RLY DPDT 5V SM

Q100
BC849B

0V_D

10U CERAFINE
R144
22K SM

R145
22K SM

+

C137
10U CERAFINE

0V_SIG

D121
BAV99W DUAL SM

RLY100A

RLY DPDT 5V SM

R203
4K7 SM

01_E014 JBR 28/11/01 Fuses uprated to 2A 1.1
01_1142 JBR 14/8/01 First production release 1.0

ECO No. DESCRIPTION OF CHANGE

Date Printed

C117

+

10U CERAFINE

C116
10U CERAFINE

C138

Z106_11Z114_7

+

D122
BAV99W DUAL SM

RLY DPDT 5V SM

MUTE*

INITIALS

Z106_14

R121
22K SM

R146
22K SM

RLY100B

DATE

SCLK

SDATA

TONEID

0V_D

0V_TONEID

SK102
1
2
3
4

AMPCT4
TO POWER AMP I/P

Drawn by:

JBR28-Nov-2001

SCLK

SDATA

TONEID

IC DS1844

0V_TONEID

0V_SDATA

0V_SCLK

LISTEN 0
LISTEN 1
LISTEN 2
VCR 0
VCR 1
VCR 2
TAPE 0
TAPE 1
TAPE 2

TONE*
TONEID

0V_SDATA

13
12

R122
2R2 SM

R124
2R2 SM

R123
2R2 SM

SDATA

0V_SLOAD

0V_SIG

2 3Sheet of

9

MUTE*

+5V

CLK
DIN
RST

R147
22K SM

R148
22K SM

R149
22K SM

R150
22K SM

SLOAD

0V_SCLK

R188

10K SM

20

Z108E

VCC

1

PS

8

R/W

11

DOUT

GND

10

0V_SIG

SCLK

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 L

MODULE R

0V_MODULE

DRAWING NO.

C118
100N SM

R204
10K SM

C119
10N SM

R151
22K SM

R152
22K SM

R153
22K SM

R154
22K SM

R155
22K SM

FFC22V1MM

L937C2

+

C120
10U EL

SK100
1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17

TO MICRO / DISPLAY PCB

18
19
20
21
22

SK101

1

2

3

4

5

6

7

8

9
10
11
12
13
14
15
16
17
18
19
20

TO PLUG IN MODULE PCB
21
22

23
24
25
26
27
28
29
30

FFC30V SM

ISSUE

D

C

B

A

4321

D302

BAS16W SM

Q305
2SA1964

D

C

SK300
MOLEXPWR4

3

4

1

2

F300

T2A SM

F301

T2A SM

AC1

C307
470N PE

AC2

D300
S1D

C308
100N SM

C309
100N SM

D301
S1D

UR+

+

C300
1000u 35V

Q300
J112

R300
330R SM

C314
1N0 PP

C315
1N0 PP

Q303
J112

Q306
BC846B

D310+

+

C302
220U EL

+

C312
220U EL

D311-

D310
15V 350MW SM

D311
15V 350MW SM

+15V

+

+

I

+15V3

C304
100N SM

C303
3300u 25V

C313
3300u 25V

Z301
LM317T

Vin

0V_PSU

D304

BAS16W SM

Vout

ADJ

A

+3.75V

R302
1K2 SM

R307
220R SM

O

+

C305
10U EL

-15V

D305
BAS16W SM

+15V

0V_PSU

0V_MODULE

R303
470R SM

SK301
1
2
3
4

IDC4S

+5V

+5V

+

C306
470U EL 25V

D

C

D306
S1D

B

D307
S1D

+

UR-

C310
1000u 35V

R304
330R SM

Q301
2SC5248

D308

BAS16W SM

Q307
BC856B

-15V

-15V3

SP300
STAR POINT 4

0V_HF 0V_MODULE

0V_PSU

0V_SIG

0V_SIG

B

DRAWING TITLE

Integrated amplifier preamp - power supply

A

23425

Notes:

Circuit Diagram

01_E014 JBR 28/11/01 Fuses uprated to 2A 1.1

A

A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

1 2 3 4

Filename

J:\Change_Control\ECO_AGENDA\01_E014 Fuse changes on A32 preamp\L937_1.1.ddb - Documents\Schematic\L937C3_1.0.SCH

01_1142 JBR 14/8/01 First production release 1.0

ECO No. DESCRIPTION OF CHANGE

Date Printed

INITIALS

28-Nov-2001

DATE

Drawn by:

JBR

3 3Sheet of

DRAWING NO.

L937C3

ISSUE

87654321

+5V_D

SK100

D

+5V_D

14

IC100G
74HC14D

7

C100
100N SM

+

C102
100U EL

C101
100N SM

R100
1K0 SM

TH100
PTH90DEG

IC100E

74HC14D
IC100F

1011

1213

FFC 14W 2.54MM VER
PIN 1 TO THE LEFT AS YOU LOOK FROM THE FRONT

THERMPROT

TP102

1
2
3
4
5

SPKR1 ON

6

SPKR2 ON

7

THERMPROT

8

VIPROT1

9

DCPROT1
10
11
12
13
14

TP103

+5V_D

TP104
TP105
TP106
TP107
TP108

0V_D

0V_D

0V_SIG

TP116

0V_LS 0V_HF

SP100

STAR POINT 8

0V_PSU

R107
2R2 SM

D

0V_D

0V_D

C

+49V

D100
1N4003F

TR100
BD179

B

RLY101B
RLY SPST SPKR

R103
220R SM

0V_D

TR101
BD179

RLY100B
RLY SPST SPKR

R105
100R SM

R106
100R SM

R104
220R SM

74HC14D

D101
1N4003F

SPKR1 ON

SPKR2 ON

0V_SIG

EMC

C105
1N0 SM

TP110

SK101

F

N

PHONO2G

1

TP109

+49V

-49V

0V_HF

0V_LS

L911C2_1
L911C2_1.1.SCH

INPUT
0V_SIG

0V_HF
VPOS
VNEG

VIPROT

DCPROT

OUTPUT0V_LS

R101
1K0 SM

R102
1K0 SM

TP111

1 2

C103
10N SM

5 6

C104
10N SM

0V_D
RLY101A

RLY SPST SPKR

TP112 TP113

IC100A

74HC14D
IC100C

74HC14D

3 4

SK102A

Top+

Top-

0V_LS

IC100B

74HC14D
IC100D

74HC14D

RLY100A

RLY SPST SPKR

C

VIPROT1

89

DCPROT1

SK102B

Bot+

Bot-

B

+49V

TP100

1

BR100

TP114

1

2

SK103

3

A

MOLEXPWR4

4

TP115

1 2 3 4 5 6 7 8

3

BRGBU8D

+

2

~

~

-

4

-49V

+

C106
10,000u 63V

+

C107
10,000u 63V

C108
100N PC

0V_PSU

C109
100N PC

POWER AMP SUPPLY

TP101

PB

PCB

L911PB_1

DRAWING TITLE

AP85 third channel - top level

23425

A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

Notes:

Filename

J:\ECO_wip\01_1101 A85 RANGE PCB FUSES AND DC OFFSET\L911_1.1.DDB - Documents\L911C1_1.1.PRJ

Circuit Diagram

01_1101 JR 4/6/01 DC OFFSET CHANGES 1.1
01_1018

ECO No. DESCRIPTION OF CHANGE

Date Printed

JR 30/1/01 PRODUCTION ISSUE 1.0

INITIALS

4-Jun-2001

DATE

Drawn by:

J Reckless

1 2Sheet of

DRAWING NO.

L911C1

A

ISSUE

87654321

D

R315

TR300
FMMT597

C310
100N SM

3
2

C314
100N SM

TR314
FMMT497

100R SM

PNP CURRENT MIRROR

TR311
FMMT497

R328

4K7 SM

TP302

84

0V_SIG

IC300A

TL072CD

TP303

TR303
FMMT597

NPN CURRENT MIRROR

R317
100R SM

R300
10K SM

+

C300

DZ300

100U EL

15V 350MW SM

0V_HF

0V_SIG

C

INPUT

0V_SIG

0V_HF

B

INPUT FILTER V TO I AMP

R324
1K0 SM

DZ302
4V7 350MW SM

DZ303
4V7 350MW SM

0V_SIG

+

C301
100U EL

0V_HF

C309
100N SM

DZ301
15V 350MW SM

R309
10K SM

R327
22K SM

C316
470P PPW

0V_SIG

7

1

C317

470N PE

IC300B

TL072CD

R322
22R SM

R337
22R SM

0V_SIG

R319
100R SM

R333
3K3 SM

DC SERVO

0V_SIG

TP304

R335
3K3 SM

R320
100R SM

R330

6

1M0 SM

5

R331
1K5 SM

R332
1K8 SM

C307

100P SM

TR322

FMMT497

C311
100N PC

C308

100P SM

R316
100R SM

TR301
FMMT597

TR321
FMMT597

R355
6K8 SM

R354
1K0 SM

TR320
FMMT497

TR315
FMMT497

R318
100R SM

TR309
FMMT497

R338
150R SM

BOOTSTRAP

+

C302
100U EL 100V

R352
470R 2W

470R 2W
R353

+

C318
10U EL

+

C306
100U EL 100V

BOOTSTRAP

R339
150R SM

TR306
FMMT597

PRE DRIVER

TR310
FMMT497

R321
22R SM

C312
10N SM

R323
22R SM

TR307
FMMT597

PRE DRIVER

ADJ BIAS

RV300
100R PSET

D300
BAS16W SM

OUTPUT STAGE

TR318
SAP15N

TP305

R325
1K0 SM

R340
100K SM

R326
1K0 SM

TP306

TR319
SAP15P

OUTPUT STAGE

PL300
1
2

MEASURE

BIAS

R341
330R SM

R342
330R SM

R343
100R SM

R344
100R SM

V-I PROTECTION

R334
22K SM

R347
100R SM

R345
0R0 SM

+

C303
100U EL

+

C304
100U EL

R346
0R0 SM

R348
100R SM

R336
22K SM

V-I PROTECTION

D301
BAS16W SM

TR312
FMMT497

TR304
FMMT597

D302
BAS16W SM

D303
1N4003F

DC OFFSET SIGNAL
TO MICRO

D304
1N4003F

0V_HF

R349
100R SM

DCPROT

TR305
FMMT597

TP308

DZ306
4V7 350MW SM

R302
10K SM

R310
4K7 SM

C315
100N SM

R301
10K SM

R329
4K7 SM

TR313
FMMT497

R303
10K SM

R304
10K SM

R311
10K SM

R312
10K SM

0V_HF

TR316
FMMT497

TR308
FMMT597

TR302
FMMT597

R305
10K SM

+

R306
10K SM

DC OFFSET
DETECTION

R307
10K SM

R313
10K SM

TR317
FMMT497

VI PROTECT
SIGNAL TO MICRO

TP307

C305
10U EL

VIPROT

DZ305
4V7 350MW SM

R308
22K SM

0V_HF 0V_LS

C320
100U NP

R350
5R6 2W CF

C319
100N PE

R314
10K SM

R351
5R6 2W CF

L300

2U2H LAC SMALL

ZOBEL NETWORK

C313

100N SM

VPOS

OUTPUT

0V_LS

0V_HF

VNEG

D

C

B

A

A

DRAWING TITLE

AP85 third channel - output stage

23425

A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

1 2 3 4 5 6 7 8

Notes:

Filename

L911C2_1.1.SCH

Circuit Diagram

01_1101 JR 4/6/01 DC OFFSET CHANGES 1.1

JR 30/1/01 PRODUCTION ISSUE 1.001_1018

INITIALS

DATE

Drawn by:

J Reckless4-Jun-2001

2 2Sheet of

DRAWING NO.

L911C2

ECO No. DESCRIPTION OF CHANGE

Date Printed

ISSUE