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PREAMP AMP CIRCUIT FOR Vm1.7
PCB-1: MAIN BOARD FOR Vm5.0
C720BEE INPUT SELECT CIRCUIT
RL31B
6
RCA31A
4
R31
DISC
5
L1
470
C31
R349
100p
22K
RL32B
6
RCA31C
4
R33
CD
5
L2
470
C33
R351
100p
22K
RL33B
6
RCA32A
4
R35
VIDEO
5
L3
470
C35
R353
100p
22K
RL34B
6
RCA32C
4
R37
AUX
5
L4
470
C37
R355
100p
22K
RL35B
6
RCA33A
4
R39
TAPE
5
L5
470
C39
R357
100p
22K
RL36B
6
4
R311
TUNER L
5
L6
470
C311
R337
1n2
R345
22K
220K
3
RL31A
RCA31B
1
R32
DISC
2
470
R1
C32
R350
100p
22K
3
RL32A
RCA31D
1
R34
CD
2
470
R2
C34
R352
100p
22K
RL33A
3
RCA32B
1
R36
VIDEO
2
470
R3
C36
R354
100p
22K
RL34A
3
RCA32D
1
R38
AUX
2
470
R4
C38
R356
100p
22K
RL35A
3
RCA33B
1
R310
TAPE
2
470
R5
C310
R358
100p
22K
RL36A
3
1
R312
TUNER R
2
470
C312
R6
R341
1n2
22K
R346
220K
PREAMP OUT MODULE CIRCUIT FOR Vm1.6
PCB-7: OUT MODULE BOARD FOR Vm5.0
C68
R68
0.1u
1K
CB61
+18V
1
LOUT
C62
2
LIN-
C64
3
220p
22p
LIN+
Q62
4
GND
2SK170
5
R62
RIN+
C610
6
R64
220
RIN-
100p
1M
7
ROUT
R610
8
-18V
R621
430
9
120
CON9
D64
1N4148
C611
15pF
C67
0.1u
C325
47u/25
C321
0.1u
R325
390 MF
R321
3K3 MF
C327
22n 5%
63V
R323
R319
750 MF
N.I.
C323
+18V
C319
R327
180 MF
0.1u 10%
47u/25
CB32
OFF
1
TONE DEFEAT SW
SW31A
2
ON
3
4
5
C326
6
47u/25
7
8
9
R326
390 MF
R322
3K3 MF
C324
C322
C320
0.1U
0.1u 10%
C328
22n 5%
47u/25
-18V
63V
R324
R320
750 MF
N.I.
R328
180 MF
OFF
TONE DEFEAT SW
SW31B
ON
R492
4K7,1%
+12V
RL31C
RL32C
RL33C
D37
D38
D39
1N4148
1N4148
1N4148
DISC
CD
VIDEO
C351
C352
C353
10n
Q34
Q35
10n
10n
Q33
C1815
C1815
C1815
R369
R371
R373
4K7
4K7
4K7
R370
R372
R374
4K7
4K7
4K7
+5V
C438
C439
C440
C357
510p
510p
510p
0.1u
IC32
4094
01-72004-02
Q65
Q63
C66
A970
A970
0.1u 20%
R67
Q68
1K
D667
R612
R611
1K
C61
C63
1K
220p
22p
Q61
R616
R620
R61
2SK170
D63
33
10
C69
D61
220
1N4148
100p
1N4148
R63
1M
R69
430 2%
R617
R618
10
10
D62
1N4148
Q66
B647
C65
R614
R613
0.1u 20%
10K
10K
C720BEE TONE CONTROL CIRCUIT
R329
1K5 MF
C331
0.22u 5%
63V
RT32A
10KA
C333
BASS POT
0.97u
5%63V
RT34A
20K MN
BALANCE POT
R331
390 MF
1
C335
470p,50V,20%
2
3
C350
R388
820p
20k
R330
1K5 MF
C332
0.22u
RT32B
5%,63V
10KA
BASS POT
C334
0.97u
5%63V
R332
RT34B
390 MF
20K MN
BALANCE POT
4
C336
5
470p,50V,20%
6
Z2 IN L
-18V
+18V
R367
R368
2K
2K
D313
D314
16V
16V
Z2 IN R
RL34C
RL35C
RL36C
R402
D310
D311
D312
10K
C301
1N4148
1N4148
1N4148
10uF/50V
AUX
TAPE
FM/AM
Q401
A1015
C354
C355
C356
Q36
Q37
Q38
10n
10n
10n
C1815
C1815
C1815
R403
1K
R379
R375
R377
4K7
4K7
4K7
R376
R378
R380
4K7
4K7
4K7
Q402
C1815
VOL+
VOL-
+5V
C442
C441
C358
510p
N.I.
0.1u
IC33
4094
PREAMP IN MODULE CIRCUIT FOR Vm1.6
PCB-8: IN MODLE BOARD FOR Vm5.0
Q67
D667
CB61
+18V
1
LOUT
2
LIN-
3
R615
LIN+
4
33
GND
5
RIN+
6
RIN-
7
ROUT
8
-18V
R619
9
10
CON9
Q64
B647
MOTO POT FOR Vm1.6
PCB-5: POT BOARD FOR Vm5.0
CZ34
CB31
TO VOLUME POT
9
1
8
2
7
3
6
4
5
5
4
6
3
7
+
2
8
-
1
9
CON9
CON9
MUTE CONTROL CIRCUIT
PCB-9: MUTE BOARD 01-72008-00
R335
C339
C345
PR IN L
1
R387
C349
1u/50
0.1U
20K
68
1nF
R333
C343
4.7K
N.L.
C341
C337
R336
47u/25
PR IN R
0.1U
2
68
+18V
VR301
R334
C344
CB33
100
4.7K
N.L.
1
2
R383
R385
3
R317
560 1%
1.8
470
4
Z2 LI
5
5
C317
6
R384
R386
C364
7
100p
N.L.
8
560 1%
1.8
9
VR302
R318
-18V
100
470
Z2 RI
8
C318
C363
100p
N.L.
C340
C342
1u/50
47u/25
C338
C346
CON10
0.1U
0.1U
CON10
R365
R364
-18V
10k
10k
C347 100nF.63V,5%
IC34A
TL082CP/D
R366
R362
10K
11K,MF,1%
R361
C348
220nF,63V,5%
IC34B
11K,MF,1%
+18V
TL082CP/D
+5V
RI4
4.7K
QI2
2SA1015
RI3
RI2
33
1K
+5V
R404
VOLUME CONTROL
MOTOR
10K
-
+
Name
Q403
C720BEE AMP Vm1.2.SCH
C417
C418
A1015
4u7/50V
4u7/50V
R405
1K
+12V
+5V
R406
R407
-30V
1K
1K
VFD AC1
Q404
VFD AC2
C1815
C303
C302
-46V
220p
220p
PROTECTION
-46V
SPK A
GND
SPK B
+18V
R489
100K
D423
R436
Q411
A1015
56K
1N4148
R448
R457
220K
100K
R451
R435
330K
390K
Q39
C434
C1815
22n/63V
R382
-46V
22K
R381
5K1
Q65
C68
A970
0.1u
R68
1K
Q68
D667
R612
1K
C62
C64
220p
Q62
22p
R616
2SK170
R62
C610
D63
33
R64
220
100p
1N4148
1M
R610
R621
430
120
R618
R66
10
560 2%
D64
1N4148
C611
40pF
Q66
C67
B647
0.1u
R614
10K
RT33A
RT33B
RT33C
POTALPS
POTALPS
POTALPS
2
8
4
5
PR OUT L
3
PR LO
RCA34A
Q31
PMBFJ108
R347
L PRE-OUT
100K
D319
R338
10M
1N4148
PR OUT R
Q32
10
PMBFJ108
4
PR RO
RCA34B
R348
R PRE-OUT
D318
100K
R339
10M
1N4148
Z2 OUT L
Q311
PMBFJ108
6
Z2 LO
RCA33C
D317
R391
RECORD L
R389
100K
10M
1N4148
Z2 OUT R
Q312
PMBFJ108
7
Z2 RO
RCA33D
R390
R392
D316
RECORD R
10M
100K
1N4148
CB34
CB34
SUBOUT 2
SUBOUT 1
Q310
R363
2SK363
RCA35
100
C360
SUB-OUT
C361
100p
D315
N.I.
R340
10M
1N4148
PHONE1A
QI1
+5V
RI5 10K
2SC1815
IR OUT
PHONE1B
RI1 12K
C362
RI6 100
10n
IR IN
+12V
R2
PHONE2
10
+12V Trigger
C3
0.1uF
CZ35
OP SEL ST
19
OP SEL DATA
18
OP SEL CLK
17
IR IN
16
IR OUT
15
14
IP SEL DATA
13
IP SEL CLK
12
IP SEL ST
11
10
SPK A
9
SPK B
8
Standby
7
6
5
4
3
VFD AC1
2
VFD AC2
1
+12V
CON19
+5V
CZ36
L-OUT
17
GND
16
R-OUT
15
+12V
14
13
12
C444
11
0.1uF
10
STEREO
9
TUNER
8
PLL CLK1
7
PLL D1
6
PLL D0
5
PLL CE
4
RDS CLK
3
RDS DATA
2
1
CON17
CZ37
STEREO
8
TUNER
7
PLL CLK1
6
PLL D1
5
PLL D0
4
PLL CE
3
RDS CLK
2
RDS DATA
1
CON8
01-72004-01
Q63
C66
A970
0.1u 20%
R67
1K
Q67
D667
R611
C61
C63
1K
220p
Q61
22p
R615
R620
2SK170
33
R61
10
C69
D61
220
100p
1N4148
R63
1M
R69
430 2%
R617
R619
R65
10
10
560 2%
D62
1N4148
Q64
B647
C65
R613
0.1u
10K
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