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NAD M-3 Schematic

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Page 1
SERVICE MANUAL
downloaded from http://receiverfaq.ru/
MODEL: M3SERVICE MANUAL
© NAD 2006
NAD ELECTRONICS INTERNATIONAL TORONTO
Integrated Amplifier
M3 C/AH
SERVICE MANUAL
M3 C/AH
Integrated Amplifier
M3 C/AH
Page 2
BLOCK DIAGRAMS
1. POWER DISTRIBUTE DIAGRAM
L CHANNEL
TRANSFORMER
MAIN
±20V RECTIFY
B605
ON PSU
±72V RECTIFY
B606
ON PSU
HIGH CURRENT
POWER SUPPLY
RECTIFY
B603 B604
ON PSU
L CHANNEL
INPUT RELAYS
ON PREAMP
L CHANNEL
OUTPUT RELAYS
ONLAMP
±20V REGULATOR
B606
ON PSU
±72V REGULATOR
B606
ON PSU
ISC CIRCUIT
D602 D603
ON PSU
BALANCE AMP
ON BAL
PRE AMP
ON PRE AMP
L CHANNEL AMPLIFIER
ON L AMP
AC INLET EMI FILTER
STANDBY RELAY
POWERSWITCH
FUSE F902
AH: 5A 250V C: 3.15A 350V
FUSE F901
100mA 250V
FUSE F903
AH: 5A 250V C: 3.15A 350V
R CHANNEL
MAIN
TRANSFORMER
R-CORE
STANDBY
TRANSFORMER
HIGH CURRENT
POWER SUPPLY
RECTIFY
B603 B604
ON PSU
±72V RECTIFY
B606
ON PSU
±20V RECTIFY
B605
ON PSU
5V REGULATOR
B901 IC1
12V RECTIFY
B902
ISC CIRCUIT
D602 D603
ON PSU
±72V REGULATOR
B606
ON PSU
±20V REGULATOR
B606
ON PSU
L CHANNEL
INPUT RELAYS
ON PREAMP
LOGIC CIRCUIT
ON PREAMP
MCU
LOGIC CIRCUIT
ON FPP
12V TRIGGER
ON BAL
STANDBY
RELAY
ON PSU
L CHANNEL
AMPLIFIER
ONLAMP
BALANCE AMP
ON BAL
PRE AMP
ON PRE AMP
3-9
L CHANNEL
OUTPUT RELAYS
ONLAMP
Page 3
2. PREAMP SIGNAL PATH
LEFT CHANNEL
DISC CD TUNER INPUT4 INPUT5 INPUT6
BALANCE
DISC CD TUNER INPUT4 INPUT5 INPUT6
BALANCE
BALANCE AMP
BALANCE AMP
INPUT SELECTOR
INPUT SELECTOR
STEREO/MONO
SWITCH
0/6.5dB SELECTABLE GAIN
AMP STAGE
0/6.5dB SELECTABLE GAIN
AMP STAGE
54dB ATTENUATOR
2dB/STEP
54dB ATTENUATOR
2dB/STEP
5dB TONE CONTROL
1dB/STEP
5dB TONE CONTROL
1dB/STEP
RIGHT CHANNEL
2,2.5,3,3.5dB SELECTABLE GAIN
AMP STAGE
2,2.5,3,3.5dB SELECTABLE GAIN
AMP STAGE
30dB ATTENUATOR
10dB/STEP
30dB ATTENUATOR
10dB/STEP
BIAMP HIGH PASS FILTER BY PASS, 40, 60, 80, 100Hz
BIAMP HIGH PASS FILTER BY PASS, 40, 60, 80, 100Hz
PRE OUT1
PRE OUT2
PRE OUT1
PRE OUT2
3-10
Page 4
3. SYSTEM CONTROL PATH
P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7
P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7
P2.0 P2.1 P2.2 P2.3 P2.4
P2.5 P2.6 P2.7
P3.0 P3.1
P3.2
MCU
AT89C51
P3.3
P3.4
P3.5
P3.6 P3.7
P4.0 P4.1 P4.2
P4.3
P4.4
P4.5 P4.6 P4.7
P5.0 P5.1 P5.2
P5.3 P5.4 P5.5
P5.6 P5.7
VFD
KEYS
U83 MAX3221 (FPP)
Q85 Q86 (FPP) IR IN/OUT SOCKET ( REAR PANEL)
Q89 inverter(FPP) Protect Circuit (High when Protect)
Q91 (PSU) OP91 OPTOISO (PSU) RL91 standby relay (PSU)
U84 U85 7400 (FPP) D81 Tri-color LED (FPP)
U108 U113 U208 U213 CD4094 (PRE)
U110 U210 (PRE) CD4094
U105 (PRE) TC9274
U205 (PRE) TC9274
U109 U209 (PRE) TC9274
U109 U209 (PRE) TC9274
RL301 RL302 RL401 RL402 OUTPUT RELAYS (LAMP/RAMP)
ENCODE
EEPROM
RJ45 RS232 SOCKET (REAR PANEL)
RL101 ... RL112, RL201 ... RL212 For Input Select and Biamp Filter Switch Q130 Q131 Q230 Q231 for Mute
U104 U107 U204 U207 (PRE) MAX4621 30dB Attenuator, Q101...Q103, Q201...Q203,
6.5 Gain/ 0.5 Gain Switch
3-11
Page 5
CIRCUIT DIAGRAMS
1.POWER AMPLIFIER BOARD
R33 10
R34 10
GND
AGND
R3A7 17K3
R326 100K
R3A6
D340
1N4148
R3A2 1K2
Q355
2SA970
R3A4
10K Q356 2SC2240
3
R3A5 6K35
1
1K
2
R328
C308
330P
300
R327 20K
to HS4-M3-B007 PRE VC4.0.SCH J103
CZ301
CON2
R306 100
AGND
IC303A
TL082D
D316 LED
R307 82
R308
33
L301
100uH
R317 21/1/4W 1%
R320
33
R377 82
D319 LED
D317
1N4148
Q304
2SC2240
C305
33P/250V
Q303 2SC2240
Q306 2SA970
C307
33P/250V
Q307 2SA970
D320
1N4148
D301 18V
D302 18V
D318
1N4148
R318 100
2SC2240
D321
1N4148
Q330
C301
0.1uF
C306
0.1uF
R309 82 FP 1/2W
Q309 2SA1015
Q310 2SA1360
GND
Q311 2SC3423
Q312 2SC1815
R323 82 FP 1/2W
C310
0.1u/80V
AGND
C309
0.1uF
D303 1N4148
D304 1N4148
R324 100K
Q331
2SC3423
R31 1K
R32 1K2
Q332 2SA1360
D306 1N4148
AGND
C314
0.1U
D305
1N4148
Q308
R325
2SC1815
39K C319 10uF/50V
R350
C303
10uF/50V
100
C302
1N
C315
Q301
2SA970
AGND
R355
10K/0.6W
R358
10K/0.6W
C304 10uF/50V
R321
39K
180K
R305 27K
R304 100
Q302 2SC2240
R312 100
R313 27K
R314
100
R376 220K
Q305 2SA1015
R310
22K
R311 10K
AGND
R302
22K
AGND
R301
R303
470
1 2
AGND
Q329 2SC2878
AGND
AGND
R37
R315
200K
10K
R316 22K
10uF/50V
+72V
-72V
R36
4.7K
D311 1N4148
R3A1 1K
IC305
TL431
R3A3 1K
-74V
330/0.5W FP
R344
4K7/3W FP
+74V
R341
IC302 TL431
D308 BAV21
D307BAV21
Q313 2SA1360
Q314 2SC3423
R395 4K7/3W FP
+72V
R334 4K7/3W FP
IC301
TL431
2 3
R332 330/0.5W FP
R331
4R7/FS
R330 3R3/0.5W FP
R338 3R3/0.5W FP
R339
4R7/FS
2 3
R396 4K7/3W FP
-72V
R353
680
+V24R
RL301B
RL302B
R393 0
Q353 2SC1815
R378
10K
PRGND
+V24R
RT301 T0=80 degree C
-V74 +V74
Rxl
2R2
GND
to HS4-M3-B007 PSU VC4.0.SCH P601 P602 P603
B301
R366 100K
PRGND
Q352 2SC1815
PROTECT AC DET SP A SP B
PRGND
D314 1N4148
+72V-72V
SPGND
R398 10K
CON10
PRGND
D313
1N4148
CZ302
1 2 3 4 5 6 7 8 9 10
CZ303
CON8
Q354 2SA1015
R397 100K
R394 N.I.
1 2 3 4 5 6 7 8
1
1
1
1
to HS4-M3-B007 PSU VC4.0.SCH CZ603to the binding post
P301 PCBNUT
P302 PCBNUT
P303 PCBNUT
P304 PCBNUT
6
RL301A
RL302A
D312 1N4148
C340 22N
THERMAL BREAKER
R375
200
Q350
2SA1015
D315
1N4148 R374 3K3
R373 100K
R392 0
R372 N.I.
R379 10K
PRGND
PRGND
Cxl
0.1uF/50V
R348
15
R337 18
R3B1
R380
2.2
C325 470pF
R351 22
Q322 2SC5200
R381
2.2
R3B5
0.1R 1W 5%
Q323 2SA1943
C328
0.1uF
Q324 2SC5200
0.1R 1W 5%
R352
1M
R382
2.2
R383
2.2
AGND
R3B2
R3B6
AGND
0.1R 1W 5%
Q327 2SA1943
D322
3.6V
D324
3.6V
Q328
2SC5200
0.1R 1W 5%
C329 1uF
R384
2.2
R385
2.2
Q317
Q337
2SC4793
2SC4793 R333 10K
C311
1
100UF/25V
R3881R389 R335 10K
R345
1K2 %1
Q315
KSC2690
R346 1K 1%
VR301
200
1
R342
R390
10K
1
C312 100u/25V
R343 10K
Q338
2SA1837
IC303B TL082D
Q321 2SA1943
1
R347 220
2SA1015
Q316
C326 470pF
GND
R391
1
1
Q318 2SA1837
R329 18
R349
15 R322
1K2 3W 1% R319
1K2 3W 1%
C327
1uF
R3B3
R3B7
0.1R 1W 5%
R386
2.2
Q319 2SA1943
D323 1N4148
D325 1N4148
Q320 2SC5200
R387
2.2
0.1R 1W 5%
R354
1M
R3B4
R3B8
C321
0.1R 1W 5%
4u7/50V
D309
BAV21
GND
R361 1K
R356
0.05/5W
R357
0.05/5W
C316
0.1uF
0.1R 1W 5%
R362
56K
SPGND
C320 22N
R359 10/2W FS
C318
0.1uF
GND
C323 10uF/80V
-V74
R364 6K8
R363 22K
Q325 C2240
GNDADJ DC
C322
10uF/80V Q326 2SA970
R365 10K
R371
56K
C317
0.1uF
PRGND
D326
1N4148
C334
2.2uF/50V
+V74
R368 2K2
C331 330u/16V
PRGND
GND
R35
200K
C333 47u/50V
1
2
D327
12V
2.2uF/50V
L302 1uH
R399
3R3/1W FP
Note: Cxl+Rxl network is between the chassis and the de-coupling ground with the minimum loop.
5
PRGND
C335
R370
3K3
R369
56K
8
IC304*
7
uPC1237HA
4
3
C332
0.22u
GND
SPGND
L CHANNEL AMP
to HS4-M3-B007 PRE VC4.0.SCH J203
CZ401
CON2
1 2
D411 1N4148
R46
4.7K
AGND
R402
22K
R401
Q429 2SC2878
AGND
R47 200K
R495 4K7/3W FP
Q408
R425
2SC1815
39K C419 10uF/50V
100
C402
1N
C403 10uF/50V
Q401
2SA970
AGND
C404
10uF/50V
C415 10uF/50V
R421
39K
+72V
-72V
R405 27K
R450 220K
R404 100
Q402 2SC2240
R412 100
R413 27K
R414
100
R476 220K
Q405 2SA1015
R455
10K/0.6W
R458
10K/0.6W
R410
22K
R411 10K
AGND
AGND
R403
470
AGND
R415 10K
R416 22K
R406 100
R407 82
AGND
R477 82
L401 100uH
D419 LED
D417
D416
1N4148
LED
Q404 2SC2240
C405
33P/250V
Q403 2SC2240
R408
33
R417 21/1/4W 1%
R420
33
Q406 2SA970
C407
33P/250V
Q407 2SA970
D420
1N4148
IC403A
TL082D
D418 1N4148
R418 100
Q430
2SC2240
D421
1N4148
D401 18V
D402 18V
R409 82 FP 1/2W
Q409 2SA1015
Q410 2SA1360
GND
Q411 2SA3423
Q412 2SC1815
R423 82 FP 1/2W
C410
0.1u/80V
C401
0.1uF
C406
0.1uF
C409
0.1uF
2SC3423
R41 1K
R42 1K2
AGND
AGND
D403 1N4148
D404 1N4148
R424 100K
Q431
C414
0.1uF
Q432 2SA1360
D405
1N4148
R426 100K
GND
D406 1N4148
AGND
D440
R4A1
1N4148
1K R4A2 1K2
Q455
2SA970 R4A7 17K3
R4A4
10K Q456 2SC2240
3
TL431
IC405
R4A5 6K35
R4A3
1
1K
R427 20K
R428
300
2
C408 330P
1K
-74V
330/0.5W FP
4K7/3W FP
R4A6
R43 10
R44 10
+74V
R444
R441
IC402 TL431
D408 BAV21
D407BAV21
Q413 2SA1837
Q414 2SC4793
+72V
R434 4K7/3W FP
3
IC401
TL431
2
R432
330/0.5W FP
R431
4R7/FS
R430 3R3/0.5W FP
R438 3R3/0.5W FP
R439
4R7/FS
3
2
R496 4K7/3W FP
-72V
R448
R437
15
18
Q437
2SC4793 R433 10K
1
C411
100UF/25V
R4881R489 R435 10K
R447 220
R445
1K2 1%
Q415
KSC2690
R446 1K 1%
VR401
200
1
R442
R490
10K
C412
100u/25V
R443 10K
R453
680
1
Q438
2SA1837
IC403B TL082D
Q418 2SA1837
1
R491
1
2SA1015
Q416
C426 470pF
1
R429 18
R449
15 R422
1K2 3W 1% R419
1K2 3W 1%
Q417 2SC4793
R480
2.2
Q421 2SA1943
C425 470pF
R451 22
GND
Q422 2SC5200
R481
2.2
C427
1uF
R4B1
R4B5
0.1R 1W 5%
R482
2.2
Q423 2SA1943
C428
0.1uF
Q424 2SC5200
R483
2.2
0.1R 1W 5%
R452
1M
R4B2
R4B6
AGND
0.1R 1W 5%
R484
2.2
Q427 2SA1943
D422
3.6V
D424
3.6V
Q428
2SC5200
R485
2.2
0.1R 1W 5%
C429 1uF
AGND
R4B3
R4B7
0.1R 1W 5%
R486
2.2
Q419 2SA1943
D423 1N4148
D425 1N4148
Q420
2SC5200
R487
2.2
0.1R 1W 5%
R454
1M
R4B4
R4B8
C421
0.1R 1W 5%
4u7/50V
D409
BV21
GND
R461 1K
R456
0.05/5W
R457
0.05/5W
C416
0.1uF
0.1R 1W 5%
R462
56K
SPGND
GND
C420 22N
R459 10/2W FS
C418
0.1uF
C423 10uF/80V
-74V
R464 6K8
R463 22K
Q425 C2240
C417
C422
10uF/80V
Q426 2SA970
R471
56K
GND
PRGND
0.1uF
+74V
R467
10K
R468 2K2
C431 330u/16V
D426
1N4148
C434
2.2uF/50V
C433
GND
47u/50V
1
2
PRGND
D427
12V
C435
2.2uF/50V
Note: Cxr+Rxr network is between the chassis and the de-coupling ground with the minimum loop.
PRGND
GND
5
R45 200K
R470
3K3
R469
56K
8
IC404*
7
uPC1237HA
6
4
3
D412
1N4148
C432
0.22u
L402 1uH
R499
3R3/1W FP
SPGND
R CHANNEL AMP
THERMAL BREAKER
R475
200
Q450
2SA1015
R474 3K3
R473 100K
RL401B
R472 N.I.
PRGND
R478
10K
PRGND
RL401A
RL402A
C440 22N
Cxr
0.1uF/50V
B401
R466 100K
D414
D415
1N4148
1N4148
R4930R492
R479 10K
PRGND
PRGND
Q452
Q453
2SC1815
2SC1815
PROTECT AC DET SPK A SPK B
+V24R
RT401 T0=80 degree C
-74V+74V
Rxr
2R2
GND
to HS4-M3-B007 PSU VC4.0.SCH P701 P702 P703
0
+72V-72V
PRGND
SPGND
RL402B
R498 10K
+V24R
PRGND
D413
1N4148
CZ402
1 2 3 4 5 6 7 8 9 10
CON10
CZ403 CON8
Q454 2SA1015
R497 100K
R494 N.I.
1 2 3 4 5 6 7 8
1
1
1
1
to HS4-M3-B007 PSU VC4.0.SCH CZ703
to the binding post
P401 PCBNUT
P402 PCBNUT
P403 PCBNUT
P304 PCBNUT
*IC 304 and IC 404 replaced by Protect Module
R12 10k
R21
Q11
220k
2SA1015GR
R17 100k
Q12
D12
R27
R28 10k
R23
56K
1N4148
10k
Q18 2SC1815GR
R18 100k
1
2
3
4
5
6
7
8
R22
R20
R24
820k
220k
180k
Q16 2SC1815GR
Q15 2SC1815GR
C10
1N
R25
4.7k
Q17 2SC1815GR
Q13 2SC1815GR
D10 1N4148
R10 100k Q10 2SA1015GR
R13 10k
Q14 2SC1815GR
R19 56k
D13
4.7V
R15 10K
Q19
2SC1815
R11
R26
100k
10k
R16 10k
Protect Module
2SA1015GR
R14 22k
C12
0.22UF
C11 100N
J10 CON8
Replace and change orientation for the parts below: C601 & C701 From 4.7uF/50V to 0.47uF/50V. Reverse mount C601 & C701.
Remove the parts below:
R369 & R469 Remove the 56K Ohm resistor.
Replace the parts below:
R370 & R470 From 6.8K Ohm to 5.1K Ohm.
Change orientation for the parts below:
D601 & D701 Reverse mount the 1N4148.
3-12
Page 6
2. PREAMP BOARD
HDATA2 VOLA2 HDATA HCLK VOLA
RRCA1 INPUT1
RRCA2 INPUT2
RRCA3 INPUT3
RRCA4 INPUT4
RRCA5 INPUT5
RRCA6 INPUT6
LRCA1 INPUT1
LRCA2 INPUT2
LRCA3 INPUT3
LRCA4 INPUT4
LRCA5 INPUT5
INPUT6
OPSEL_CLK OPSEL_DATA OPSEL_STB
S10
S117S128S139S1410S1511S1612S1713S18
S10'28S9'29S8'30S7'31S6'32S5'33S4'34S3'35S2'36S1'
27
Rin2
Rin3
C201 100p
100p C203
C204 100p
C205 100p
C206 100p
C101 100p
C102 100p
C103 100p
C104 100p
C105 100p
C106 100p
28
27
S9'29S8'30S7'31S6'32S5'33S4'34S3'35S2'36S1'
S10'
S117S128S139S1410S1511S1612S1713S18
6
Lin3
LOUT
123456789
123456789
LOUT
Rin1
Rin1
Rin2
Rin3
Rin4
Rin5
Rin6
Rin7
Lin7
Lin1
Lin2
Lin3
Lin4
Lin5
Lin6
-18VL
+18VL
Lin1
Lin2
-18VL
+18VL
CZ108LCON5 CZ108 CON5
+18VL
-18VL
18
19
14
16
U209
CK
TC9274N
STB
DATA
Vdd38GND15Vss
S18'20S17'21S16'22S15'23S14'24S13'25S12'26S11'
40
-18VR
+18VR
C230
C231
0.1uF
0.1uF
3
RL201A
1
2
6
RL201B
4
5
3
RL202A
1
2
6
RL202B
4
5
3
RL203A
1
2
6
RL203B
4
5
RIN
3
RL204A
1
2
6
RL204B
4
5
3
RL205A
1
2
6
RL205B
4
5
3
RL206A
1
2
6
RL206B
4
5
2
RL207A
1
3
5
RL207B
4
6
6
RL212B
4
5
RL212A
2
1
3
3
RL107A
1
2
6
RL107B
4
5
3
RL101A
1
2
6
RL101B
4
5
LIN
3
RL102A
1
2
6
RL102B
4
5
3
RL103A
1
2
6
RL103B
4
5
3
RL104A
1
2
6
RL104B
4
5
3
RL105A
1
2
6
4
RL105B
5
3
1
RL106A
2
6
4
RL106B
5
38
15
40
Vss
Vdd
S18'20S17'21S16'22S15'23S14'24S13'25S12'26S11'
GND
U109
TC9274N
CK16DATA18STB
19
14
OPSEL_STB_L OPSEL_DATA_L OPSEL_CLK_L
1C57
10n
1R66
1R65
4.7K
4.7K
1C56 100p
Z2MUTE
5
44
6
S51S62S73S84S9
S141S242S343S4
37
Rin4
Rin5
Rin6
Rin7
R201
220R
R202
C220
1M
100pF
R203
220R
C221
R204
100pF
1M
C202 100p
R205
220R
C222
R206
100pF
1M
R207
220R
C223
R208
100pF
1M
R209
220R
C224
R210
100pF
1M
R211
220R
C225
R22
100pF
1M
R213
220R
CZ101
8 7 6 5 4 3 2 1
FROMBAL_SCH CZ504
R113
220R
R101
220R
R102
C120
1M
100pF
R103
220R
R104
C121
1M
100pF
R105
220R
R106
C122
1M
100pF
R107
220R
R108
C123
1M
100pF
R109
220R
R110
C124
1M
100pF
R111
220R
R12
C125
1M
100pF
LRCA6
37
S51S62S73S84S95S10
S141S242S343S4
44
Lin4
Lin5
Lin6
Lin7
LIN7
MAININ L
LIN
10
10
LIN7
MAININ L
LIN
24VR
78
RL207C
2C13
10n
2R13
2R14
4.7K
4.7K 2Q07 2SC1815
2C14 100p
RIP7
1R700R1R71
FUNC HDATA HCLK
+5V
2C52
HCLK
15
3
16
2
100N
U213
OE
4094
24VL
CLK
VCC
GND
8
10
RIP7
RMUTE1
MONO
FILTER1
FILTER2
FILTER3
0.22uF C238
R277 220K
+20VR
2C31
+17VR
100N
2C32 100N
-20VR
-18VR +18VR
2Q21 KSA1220
2C40
2C39
0.1uF
0.1uF
VOLR_CLK VOLR_DATA VOLR_STB OPSEL_CLK OPSEL_DATA TONE_STB
-18VL -20VL
1Q21 KSA1220
1C40
1C39
0.1uF
0.1uF
C138
0.22uF
LIN
R177 220K
C139
1U
+17VL
+20VL
1C31 100N
R13 100k
1R85 220K
R14
1C32 100N
10
-20VL
VOLL_CLK VOLL_DATA VOLL_STB
HCLK HDATA2 VOLA2 OPSEL_CLK OPSEL_DATA OPSEL_STB FUNC DATA HCLK
+5V
123456789
10
0R
HDATE L
1R73
FUNC L HCLKL
+5V
1R72
10K
1R74 10K
24VL
78
RL112C
1D16 1N4148
1C13
10n
1R13
1R14
4.7K
4.7K
1Q25 2SC1815
1C14 100p
LIP7
2D07 1N4148
2C15
10n
2R16
2R15
4.7K
4.7K
2C16 100p
RMUTE1
+5V
1R69
10K
1Q27 2SC3326
10K
2C51
1
D
STR
GND
Q14Q25Q36Q47Q514Q613Q712Q811QS9QS
8
10
RIP3
RMUTE2
R282 1M
C239 1U
2R85
220K
R23
100k
R24 10
-20VR
+20VR
2R43 430
2R42
2C38
5K6
0.1uF
+20VL
2R39 430
2R38 5K6
1C38
0.1uF
R182 1M
C136
220U
1R86
442
Q103 2SC3326
1D12 1N4148
10
CZ208 CON10
CON10 CZ208L
123456789
24VL
+5V
1Q26 2SC3326
78
RL107C
1D07 1N4148
1Q07 2SC1815
C226 100uF/16V
R275 6K651%
Q202
2SC3326
Notassemble
R183 1M
R145 10K
VOLA
HDATA
+5V
+5V
2C48
1
2
15
3
16
100N
1R101
10K
D
1R103 10k
10
7
ZEROR
2R90 1M
2R91 10K
-18VR
+18VR
9
R196
10K
R199
10K
ZEROL
1Q28
2SC3326
4
3
7
U203A
TLO84
+20VL
-20VL
R179
4991%
C108
22p
C128
1U
U102B AD8512ARZ
1R97 47K
3
8
C208
22P
R296
10K
R299
10K
12
V+
V-
7
123456789
OE
STR
CLK
VCC
Q14Q25Q36Q47Q514Q613Q712Q811QS9QS
-1dBR
-0.5dBR
-10dBRR
-20dBRR
5dBR
0dBR
+20VR
PREAMPMODULE
6
U201A
V+
V-
1
5
-20VR
R279
4991%
2R92
180
C228
1U
6
10K(NC)
5
U202B AD8512ARZ
2C55
1U 47K 2R97
-18VR
+18VR
U101B PREAMP MODULE
R185
8
L3
0R
11
1R92
180
1R93 1M
VL+VL-
6
5
2C55
1U
-18VL
1R99
100K
R197
82
1R49
82
R198
100K
+18VL
U212B
4
5
74F00 U212D
12
13
74F00
+20VR
+5V
-20VR
-30dBRR
2
2R93 1M
VR202
VR102 10K(NC)
GND
8
R285
33 L2
0R
VR+VR-
2R99 100K
R297 82
1R50 82
R298 100K
33
6
11
1R102
0
1R60 5K
2D15
1N4148
R283
C214
1M
100p
C229 1uF
R276 3K241%
Q201
2SC3326
2D13 1N4148
C242
2.2N
U203C
TL084
2R98
47k
2C45
0.1U R245 10K
2C44 R280 10K
0.1U
U203B
TL084
C114 100p
1R90
C129
1M
1uF
R176 3K241%
Q101 2SC3326
1R91 10K
C141
2.2N
C142
2.2N
U103B
TL084
1R98
47k
U103D
TL084
U103C
TL084
1C45
+18VL
U103A
0.1U
1C44
TL084
0.1U
-18VL
U212A
1
2
74F00
U212C
9
10
74F00
+5V
1C54 100N
OPSEL_DATA
OPSEL_STB
VOLR_STB
VOLR_CLK
VOLR_DATA
OPSEL_CLK
1011121314151617181920212223242526
24VR
78
RL208C
2Q08 2SC1815
+5V
15
16
100N
OE
VCC
RIP1
RIP4
RIP5
RIP6
10
9
-20VR
2R88
180
C236 220U
2R86
442
Q203 2SC3326
2Q22 KSC2690
2R44 430
2C35
0.1uF
1Q22 KSC2690
2R40 430
1C35
0.1uF
4
3
1R84
1R88
180
C119 1U
1C33
0.1U
1
U102A
1R87
AD8512ARZ
10K
C140
2.2N
1C52
100N
GND
8
10
FILTER1L
FILTER2L
1C15
1R16
1R15
4.7K
4.7K
FILTER3L
78
RL209C
2D08 1N4148
2C17
10n
2R17
2R18
4.7K
4.7K 2Q09 2SC1815
2C18 100p
FILTER2
1
3
2
U208
D
4094
STR
CLK
Q14Q25Q36Q47Q514Q613Q712Q811QS9QS
RIP2
12
U201B
24VR
PREAMP MODULE
L4
V+
8
0R
V-
R212
7
33
11
2R89
2R84
499
1M
C207 22P
C219
1U
2C33
+18VR
84
2
0.1U
1
3
U202A
2R87
AD8512ARZ
10K
2C34
0.1U
-18VR
2D12
1N4148
1R47 5K1
2R45
2C36
2C37
5K6
0.1uF
0.1uF
+18VL
1R48 5K1
2R41 5K6
1C36
1C37
0.1uF
0.1uF
+20VL
6
U101A
PREAMP MODULE
L1
V+
2
0R
V-
R112
5
1
33
-20VL
499
C107
1R89
22P
1M
+18VL
84
2
3
1C34
-18VL
0.1U
1
2
15
3
16
OE
VCC
LIP5
LMUTE1L
FILTER3L
78
RL108C
10n
1Q08
2SC1815 1C16 100p
100N
U113
D
4094
STR
CLK
GND
Q14Q25Q36Q47Q514Q613Q712Q811QS9QS
8
10
LIP6
LIP7
Z2MUTE
1D08 1N4148
1C17
10n
1R18
1R17
4.7K
4.7K
1C18 100p
FILTER1L
2C46
0.1U
2C47
0.1U
1C46
0.1U
1C47
0.1U
VR101 10K(NC)
24VR24VR
78
RL210C
2D09 1N4148
2C19
10n
2R20
2R19
4.7K
4.7K 2Q10 2SC1815
2C20 100p
FILTER1
+17VR
R27 100K
VR+
R28 22
VR201
10K(NC)
R29 22
VR-
R21 100K
C240
2.2N
-17VR
+5V
2Q19 2SC1815
+5VMR
+5V
1Q19 2SC1815
+5VML
+17VL
R17 100K
VL+
R18 22
R19 22
VL-
R11 100K
-17VL
+5V+5V 1C51
1
2
15
3
16
U108
D
OE
4094
STR
CLK
VCC
Q14Q25Q36Q47Q514Q613Q712Q811QS9QS
LIP1
LIP2
LIP3
LIP4
LMUTE2L
78
RL109C
1D09 1N4148
1C19
1R20
1R19
4.7K
4.7K 1Q09 2SC1815
1C20 100p
LMUTE1L
78
10n
2D10 1N4148
2C21
2R22
2R21
4.7K
4.7K
2C22 100p
FILTER3
41
-0dBR
42
-2dBR
43
-4dBR
44
-6dBR
1
-8dBR
2
-10dBR
3
-12dBR
4
-14dBR
5 6
-16dBR
7
-18dBR
-20dBR
8 9
-22dBR
10 11
-24dBR
12 13
-26dBR
14
16 18 19
-18VR
+18VR
-18VL
+18VL
-0dBL
41
-2dBL
42
-4dBL
43
-6dBL
44
1
-8dBL
2
-10dBL
-12dBL
3 4
-14dBL
5
-16dBL
6
-18dBL
7 8
-20dBL
-22dBL
9
10
-24dBL
11 12
-26dBL
13 14
16 18 19
-18VL
+18VL
1
2
3
D
STR
Q14Q25Q36Q47Q514Q613Q712Q811QS9QS
-1dBL
-0.5dBL
5dBL
RL110C
1D10 1N4148
1Q10 2SC1815
10n
1D19
1D20
1D21
2D21
CLK
U205
TC9274N
U105
TC9274N
+5V
15
0dBL
FILTER2L
78
RL211C
2Q11 2SC1815
S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17 S18
CK DATA STB
2D18
20V0.5W
2D17
20V0.5W
1D18
20V0.5W
1D17
20V0.5W
1V0.5W
1V0.5W
1V0.5W
1V0.5W
S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17 S18
CK DATA STB
1C24
0.1U
1C48
16
100N
OE
VCC
-10dBL L
-20dBL L
-30dBL L
1C21
10n
1R22
1R21
4.7K
4.7K
1C22 100p
78
RL212C
2D11 1N4148
1C23
10n
1R23
2R23
4.7K
4.7K 2Q12 2SC1815
2C23 100p
MONO
37
-28dBR
S1'
36
-30dBR
S2'
35
-32dBR
S3'
34
-34dBR
S4'
33
-36dBR
S5'
32
-38dBR
S6'
-40dBR
31
S7'
-42dBR
30
S8'
29
S9'
28
-44dBR
S10'
27
-46dBR
S11'
-48dBR
26
S12'
25
-50dBR
S13'
24
S14'
23
-52dBR
S15'
22
S16'
21
-54dBR
S17'
20
S18'
+18VR
38
Vdd
40
Vss
-18VR
15
GND
2C24
0.1U 2C25
0.1U
2D20
2.2V
1R108 3R3
-28dBL
37
S1'
-30dBL
36
S2'
-32dBL
35
S3'
34
-34dBL
S4'
-36dBL
33
S5'
-38dBL
32
S6'
-40dBL
31
S7'
-42dBL
30
S8'
29
S9'
28
-44dBL
S10'
-46dBL
27
S11'
26
-48dBL
S12'
-50dBL
25
S13'
24
S14'
-52dBL
23
S15'
22
S16'
-54dBL
21
S17'
20
S18'
38
Vdd
40
Vss
15
GND
1C25
0.1U
U110 4094
GND
8
10
24VL24VL24VL24VL24VL
78
RL111C
1D11 1N4148
1C01
10n
1R02
1R01
4.7K
4.7K 1Q11 2SC1815
1C02 100p
LIP1
24VR
78
RL201C
2D16 1N4148
2C01
10n
2R02
2R01
4.7K
4.7K 2Q01 2SC1815
2C02 100p
RIP1
-0dBR
R216 453
-2dBR
-4dBR
R217 357
R218 294
-6dBR
-8dBR
R219 255
R220 191
-10dBR
-12dBR
R221 150
R222 121
-14dBR
R223 95.3
-16dBR
R224 75
-18dBR
-20dBR
R225 59
R226 46.4
-22dBR
-24dBR
R227 38.3
R228 28.7
-26dBR
-28dBR
R229 23.2
R230 18.7
-30dBR
-32dBR
R231 15
R232 11.8
-34dBR
-36dBR
R233 9.53
R234 6.81
-38dBR
-40dBR
R235 5.90
R236 4.75
-42dBR
-44dBR
R237 3.65
R238 2.8
-46dBR
-48dBR
R239 2.32
R240 1.87
-50dBR
-52dBR
R241 1.47
R242 1.15
-54dBR
R243 0.909
R244 3.57
1 2 3 4
-18VR
+18VR
POWER
-0dBL
R116 453
-2dBL
-4dBL
R117 357
R118 294
-6dBL
-8dBL
R119 255
R120 191
-10dBL
R121 150
-12dBL
R122 121
-14dBL
R123
-16dBL
R124 75
-18dBL
R125 59
-20dBL
R126 46.4
-22dBL
R127 38.3
-24dBL
R128 28.7
-26dBL
-28dBL
R129 23.2
R130 18.7
-30dBL
-32dBL
R131 15
R132 11.8
-34dBL
-36dBL
R133 9.53
R134 6.81
-38dBL
-40dBL
R135 5.90
R136 4.75
-42dBL
-44dBL
R137 3.65
R138 2.8
-46dBL
-48dBL
R139 2.32
R140 1.87
-50dBL
-52dBL
R141 1.47
R142 1.15
-54dBL
R143 0.909
R144 3.57
1Q14
DTA114ESC
2
2
1R76 1Q13 DTC114ESC
1 3
5dBL
24VL
78
RL101C
1D01 1N4148
1C03
10n
1R03
1R04
4.7K
4.7K 1Q01 2SC1815
1C04 100p
LIP2
78
RL202C
2D01 1N4148
2C03
10n
2R03
2R04
4.7K
4.7K 2Q02 2SC1815
2C04 100p
RIP2
J204
J204T
4
4
3
3
2
2
1
1
R-SIGNAL
R-SIGNAL
J105
J105T
1 2 3 4
DATA
DATA
J205
-18VT
J205T
4
4
3
3
2
2 1
1
POWER
+18VT
95.3
J104T
J104
4
4 3
3
2
2
1
1
L-SIGNAL
L-SIGNAL
+20VL
1
3
1R77
1R75
1K
1K
10K
1C26 100p
-20VL
24VL 24VL
78
RL102C
1D02 1N4148
1R05
4.7K 1Q02 2SC1815
LIP3
24VR
+18VT
1C30 100N
2C30 100N
-18VT
19
16
18
STB
DATA
40
2
-1dBL
1C05
10n
1R06
4.7K
1C06 100p
2D02 1N4148
2R05
4.7K
RIP3
C209 82N
R246
309
R247
160
R248
274
R249
402
R250
887
R251
1K58
R252
698
R253
249
R254
121
R255
68.1
R256
48.7
R257
121
1C29
0.1U
+18VT
2C29
0.1U
14
CK
Vdd38GND15Vss
S18'20S17'21S16'22S15'23S14'24S13'25S12'26S11'
+18VT
TONE CONTROL BOARD
C109 82N
R146
309
R147
160
R148
274
R149
402
R150
887
R151
1K58
R152
698
R153
249
R154
121
R155
68.1
R156
48.7
R157
121
1Q16 DTA114ESC
2
1 3
1Q15 DTC114ESC
78
RL103C
1D03 1N4148
1Q03 2SC1815
78
2C05
10n
2R06
4.7K
2C06 100p
C211
0.22uF
1R52 10R
6
-3dBB
-4dBB
-5dBB
S117S128S139S1410S1511S1612S1713S18
27
-3dBT
-4dBT
-5dBT
1R51 10R
MMBFJ108
MMBFJ108
MMBFJ108
MMBFJ108
MMBFJ108
MMBFJ108
MMBFJ108
MMBFJ108
MMBFJ108
MMBFJ108
C111
MMBFJ108
0.22U
+20VL
1
3
1R78 10K
-20VL
1R07
4.7K
LIP4
24VR
RL203C
2Q03 2SC1815
5
-1dBB
-2dBB
S10
S10'28S9'29S8'30S7'31S6'32S5'33S4'34S3'35S2'36S1'
-1dBT
-2dBT
Q107
Q108
Q109
Q110
Q111
Q112
Q113
Q114
Q115
Q116
Q117
1R791K1R80
1C27
100p
1C07
10n
1R08
4.7K
1C08 100p
0dBB
0dBT
78
RL104C
1Q04 2SC1815
2D03 1N4148
Q207 MMBFJ108
Q208 MMBFJ108
Q209 MMBFJ108
Q210 MMBFJ108
Q211 MMBFJ108
Q212 MMBFJ108
Q213 MMBFJ108
Q214 MMBFJ108
Q215 MMBFJ108
Q216 MMBFJ108
Q217 MMBFJ108
1dBB
S51S62S73S84S9
1dBT
1K
24VL
24VR
78
RL204C
2C07
10n
2R08
2R07
4.7K
4.7K 2Q04 2SC1815
2C08 100p
RIP4
5dBT
2R37 10M
4dBT
2R36 10M
3dBT
2R35 10M
2dBT
2R34 10M
R263
1dBT
2R33 10M
0dBT
2R32 10M
-1dBT
2R31 10M
-2dBT
2R30 10M
-3dBT
2R29 10M
-4dBT
2R28
2R106
10M
15
-5dBT
R269
2R27 10M
287
5dBT
4dBT
3dBT
44
5dBB
4dBB
3dBB
2dBB
2dBT
U112
S141S242S343S4
TC9274N
1dBT
0dBT
-1dBT
37
-2dBT
5dBT
4dBT
3dBT
2dBT
-3dBT
-4dBT
-5dBT
1R38
5dBT
10M
1R39
4dBT
10M
1R40
3dBT
10M
1R41
2dBT
10M
1R42
1dBT
10M
1R43
0dBT
10M
1R44
-1dBT
10M
1R45
-2dBT
10M
1R24
-3dBT
10M
1R25
-4dBT
10M
1R26
-5dBT
R169
10M
287
+20VL
1
1Q18 DTA114ESC
2
2
3
1 3
1Q17 DTC114ESC
-20VL
-0.5dBL
1D04 1N4148
1C09
10n
1R10
1R09
4.7K
4.7K
1C10 100p
LIP5
24VR 24VR24VR24VR
78
RL205C
2D04 1N4148
2C09
10n
2R09
2R10
4.7K
4.7K 2Q05 2SC1815
2C10 100p
RIP5
R258
C213
866
332N
Q218 MMBFJ108
R259
Q219
316
MMBFJ108
R260
Q220
432
MMBFJ108
R261
Q221
681
MMBFJ108
R262
Q222
866
MMBFJ108
845
Q223 MMBFJ108
R264
Q224
487
MMBFJ108
R265
Q225
249
MMBFJ108
R266
Q226
150
MMBFJ108
R267
Q227
100
MMBFJ108
R268
Q228
53.6 MMBFJ108
C212
1uF
20K
2R107
2R46
10K 2R47
10K 2R48
10K 2R49
10K 2R50
10K 2R51
10K 2R52
10K 2R53
10K 2R54
10K 2R55
10K 2R56
10K
-18VT
Q118
R158
MMBFJ108
866
C113 332N
Q119
R159
MMBFJ108
316
Q120
R160
MMBFJ108
432
Q121
R161
MMBFJ108
681
Q122
R162
MMBFJ108
866
Q123
R163
MMBFJ108
845
Q124
R164
MMBFJ108
487
Q125
R165
MMBFJ108
249
Q126
R166
MMBFJ108
150
Q127
R167
MMBFJ108
100
Q128
R168
MMBFJ108
53.6
1R106 15
C112
1uF
20K
1R107
1R81
1R83
1R82 1K
10K
1K
1C28 100p
24VL
78
RL105C
1D05 1N4148
1C11
10n
1R11
1R12
4.7K
4.7K 1Q05 2SC1815
1C12 100p
LIP6
78
RL206C
2D05 1N4148
2C11
10n
2R12
2R11
4.7K
4.7K 2Q06 2SC1815
2C12 100p
RIP6
5dBB
10M 2R26
4dBB
10M 2R25
3dBB
10M 2R24
2dBB
10M 2R71
1dBB
10M 2R70
0dBB
10M 2R69
-1dBB
10M 2R68
-2dBB
10M 1R46
-3dBB
10M 2R74
-4dBB
10M 2R73
-5dBB
10M 2R72
2R57
5dBB
10K 2R58
4dBB
10K 2R59
3dBB
10K 2R60
2dBB
10K 2R61
1dBB
10K 2R62
0dBB
10K 2R63
-1dBB
10K 2R64
-2dBB
10K 2R65
-3dBB
10K 2R66
-4dBB
10K 2R67
-5dBB
10K
1R27
5dBB
10M
1R28
4dBB
10M
1R29
3dBB
10M
1R30
2dBB
10M
1R31
1dBB
10M
1R32
0dBB
10M
1R33
-1dBB
10M
1R34
-2dBB
10M
1R35
-3dBB
10M
1R36
-4dBB
10M
1R37
-5dBB
10M
24VL
1Q23
78
DTC114ESC
RL106C
1D06 1N4148
2
1Q06 2SC1815
-20VL
LMUTE2L
+20VL
J201
CON26
+18VR
1
2Q23 DTC114ESC
2D06
2Q24
1N4148
2
DTA114ESC
2
3
1R59 10K
1 3
2C53 100p
-18VR
RMUTE2
C218
R284
0.22uF
33K
R281
+17VR
1K91%
R25 100k
R278
220K
R26 10
2D14 1N4148
C241
2.2N
+18VR
R215
1K
Q204
2SA1015
R294
1K
Q205
2SA1015
2R146 10k
ZERORP
R214 5K
C118
R184
0.22uF
33K
R181
1K91%
1 3
R15
100k
24VR24VL
C126
100uF/16V
R178
220K
R175
R16
6K651%
10
Q102 2SC3326
1D13
1D14
1N4148
1N4148
+18VL
R115
1K
Q104
2SA1015
R194
1K
Q105
R180
2SA1015
10K 1R146 10k
ZERO LP
R114 5K1
Notassemble
+18VL
1
1Q24 DTA114ESC
1D15 1R58
3
5K
1R57
1C53
1N4148
10K
100p
-18VL
VOLL_DATA
VOLL_CLK
TONE_STB
HCLK
FUNC
VOLL_STB
+17VL
2
+20VR
2
5dBR
3
2Q13 DTC114ESC
R170
97.6 R171
600 R172
600 R173
191 R174
196 1R94
57.6 R186
60.4 R187
60.4 R1002
28.0 R1001
27.4
1
R270
97.6 R271
600 R272
600 R273
191 R274
196 2R94
57.6 R286
60.4 R287
60.4 R2002
28.0 R2001
27.4
5
2
RL108A
C115
100n5%
C116
R191
37.4K1%
R192
28K1%
1
2Q14
2
DTA114ESC
3
2R76
2R77
10K
1K
1 3
2C26 100p
-20VR
+18VR
+5VMR
-18VR
2R105
1.5
+18VR
-18VR
2R95
84.5
ROUT
6
RL211B
5
RL210B
100n5%
4
C215
6
C216
56n5%
2
RL209A
R291
3
37.4K1%
R292
28K1%
3
5
RL209B
4
2
6
2C60
0.22U
-18VL
+5VML
+18VL
1C43 100N
1R105
1.5
-18VL
+5VML
+18VL
1C42 100N
1R95
84.5
5
RL109B
6
2
RL111A
56n5%
3
6
RL111B
5
2
RL109A
3
+18VL
C130
0.1uF
1C60
0.22U
U210 4094
10
+5VMR
RL210A
4
1
C131
0.1uF
+20VR
1
2Q16 DTA114ESC
2
2
3
2R78
2R79
10K
1K
1 3
2R75
2Q15
1K
DTC114ESC
-1dBR
-30dBR
2C43 100N
2C42
2C41 100N
100N
4
1
1
R288
300K
1C41 100N
-20dBL L
-10dBL L
0dBL L
0.1uF
C117
3
2
+18VL
5
6
4
1
1C49
2
3
U111A
OPA2134
5
R188
6
300K
-20dBR
0.1uF
C217
2
3
5
6
-30dBL L
U106B
OPA2134
100N
-10dBR
3
2
+18VR
5
6
-18VL
+18VL
-18VL
OPA2134
0dBR
U206B
OPA2134
U211B
OPA2134
16 15 14 13 12 11 10
16 15 14 13 12 11 10
9
8 4
84
U111B
2C27 100p
-20VR
U204
9
NO2
10
IN2
11
V+
12
VL
13
GND
14
V-
15
IN1
16
NO1
MAX4621
U207
9
NO2
10
IN2
11
V+
12
VL
13
GND
14
V-
15
IN1
16
NO1
MAX4621
-18VR
U206A
R293
1
200
C233
8 4
OPA2134
0.1uF
1R63
7
200
+18VR
2C49
100N
84
U211A
OPA2134
R289
1
200
2C50
100N
-18VR
1R64
7
200
U104
NO1 IN1
V-
GND VL V+
IN2
NO2
MAX4621
U107
NO1 IN1
V-
GND VL V+
IN2
NO2
MAX4621
U106A
OPA2134
R193
1
200
C133
0.1uF
1R61
7
200
R189
1
200
100N
1C50
1R62
7
200
+20VR
1
2Q18 DTA114ESC
2
2
3
2R81
2R82
10K
1K
1 3
2Q17
2R80
DTC114ESC
1K
-0.5dBR
8
COM2
7 6 5 4 3 2 1
COM1
8
COM2
7 6 5 4 3 2 1
COM1
2
3
LOUT
1
COM1
2 3 4 5 6 7 89
COM2
1
COM1
2 3 4 5 6 7 8
COM2
1R53
5k
5
RL108B
6
Q131
2SC3326
2C28
2R83 1K
100p
-20VR
RRCA10 MAIN IN
CZ203
MAIN IN R
3 2 1
TOAMP_SCH CZ401
ROUT
J107
J207
BARL
BARR
1
1
LRCA10 MAIN IN
CZ103
MAIN IN L
1 2 3
TOAMP_SCH CZ301
RRCA7 PREOUT1
3
2
R295
100K
Q230
RL208A
2SC3326
1R56
C232
220P
5K
RL211A
1R55
5k
Q231
2SC3326
Q130
2SC3326
1R54
5k
2
1
5
4
3
RL112A RELAYSP
1
RRCA8
1
1R67
6
RL112B RELAYSP
4
R195
100K
PREOUT2
6
5
1C58220P
RL208B
100K
4
RRCA9 TAPE2
R290
1M
J206 RGND
1
J106 LGND
1
LRCA7
3
2
PREOUT1
RL110A
C132
220P
1
LRCA8 PREOUT2
6
5
1C59220P
1R68100K
RL110B
4
LRCA9 TAPE2
R190
1M
3-13
Page 7
67$1'%<$1'63($.(5%2$5'
Standby
1
2 3
4
R Core 10VA Transformer
5
6 7
8
IC1
3
IN
2
3
B901
C905
0.1uF/50V
C906
0.1uF/50V
1
1
3
DF1501S
B902
DF1501S
4
2
C903 2200uF/16V
C904 1000uF/25V
2
C901
0.1uF/50V
CZ908
4
1 2
3
3
2 1
4
CON4
4
C902
0.1uF/50V
1
AMS1117-5.0
OUT
G
4
O
C907 100uF/10V
C908
0.1uF/50V
TO PSU SCH CZ71
F901
CZ906
1 2 3 4 5
CON5
230V 100MA/250V
120V 100MA/250V
CZ905 CON5
123
4
4
123
2
1
2
1
2
1
JP902
120V JP901
230V JP900
120V
F902,F903
F903
F902
120V 5A/250V
230V 3.15A/250V
JP903
120V
JP904
230V JP905
120V
CZ902
123
4
CON4
to HS4-M3-B007 PSU VC4.0.SCH CZ74
CZ904
1 2
1
2
1
2
1
2
JP906
120V
JP907
230V JP908
120V
1
2
1
2
1
2
3 4
4PIN
CZ903
1 2 3 4
CZ903
To two main transformers
8 7 6 5 4 3 2 1
CZS1
8PIN MOLEX CONNECTOR
LCH SPEAKER CONNECTOR BOARD
1
8
1
1
1
7 6 5 4 3 2 1
CZS2
8PIN MOLEX CONNECTOR
RCH SPEAKER CONNECTOR BOARD
1
1
1
1
3-14
Page 8
4. ENCODER AND CONNECT BOARD
+5V
ES1 EC16B243040F
CZ94
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 26
FROM PRE_SCH CZ201
-24VR +24VR
ZEROL ZEROR OPSEL_STB VOLR_STB OPSEL_DATA VOLR_DATA OPSEL_CLK VOLR_CLK HDATA VOLA FUNC VOLL_STB HCLK VOLL_DATA TONE VOLL_CLK
-24VL +24VL
TO FPP BOARD CZ81
ECZ1
4 3 2 1
CON4 +5V
ENCODE BOARD
5V
+24VL
C990
-24VL
14
1OU/35V
10U/35V
IR OUT
13
12
C994
IR IN
11
EC1
0.1U
10
ER2
220
EC2
0.1U
ER3
220
EC3
0.1U
Q990 C2983
Q991 C2983
9
TXD
D990 24V
D991 24V
RXD
ER1
A
10K
1C2
ER4 10K
+5V
R990
5.6K
C991 100N
R991
5.6K
C993 100N
-24VR
TRIG-
TRIG+
+24VR
2345678
1
EC4
0.1U
B
3
EC5
0.1U
-24VL
+24VL
TONE VOLA VOLL_CLK VOLL_DATA VOLL_STB VOLR_CLK VOLR_DATA VOLR_STB FUNC HDATA HCLK ZEROR
FROM PSU_SCH CZ73
ZEROL OPSEL_STB OPSEL_DATA OPSEL_CLK TRIG+ TRIG­RXD TXD 5V
IR OUT IR IN
+24VR
-24VR
FROM PSU_SCH CZ75
CZ97
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
CZ92
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
CZ93 FROM BAL_SCH CZ501
3-15
Page 9
5. FRONT PANEL BOARD
S811
3recorde
S812
6biamp
1 2 3 4
1
C828
0.1U
C829
0.1U
2 3 4 5 6 7
C827
C830
0.1U
0.1U
SPK A SPK B STBY ZERO L ZERO R
S814
2listen
S815
5mode
S816
8volume
U87
DIP8
U83
MAX3221
8
A0
Vdd
7
WP
A1
6
A2
SCL
5
Vss
SDA
/EN
/FCOFF
C1+
VCC
V+
GND
C1-
DOUT
C2+
FCON
C2-
DIN
V-
/INV
RIN8ROUT
R842 0R
C8331NC8341NC8351NC8361NC837
+5V C824
16 15 14 13 12 11 10 9
0.1uF
S817
1standby
S818
4mono
S819
7speaker
+5V
C831
0.1U
R841
0R
TXD1 TXD RXD RXD1
1N
R81710K
R840 10KX8
123456789
+5V
TONE
VOLL CLK
VOLL DATA
TONE
VOLA
ZERO L
ZERO R
PROTECT
STBY
CZ82 TO PSU_SCH CZ72
U810 M3 VFD
S820
+5V
CZ81
1 2 3 4
CON4
R839
+5V
1
VD1
2
VD2
3 4
VD3 VD4
5
VD5
6
VD6
7
VD7
8
+5V
R81910K
R81810K
R82910K
R83010K
VOLA
VOLL STB
C825
20P
VOLL CLK
VOLL DATA
VOLR DATA
VOLR CLK
VOLL STB
VOLR STB
X81
11.0592MHz
VOLR DATA
VOLR CLK
FUNC
HDATA
C826
R838 10KX8
123456789
+5V
VOLR STB
HCLK
OPSEL DATA
OPSEL STB
OPSEL CLK
101112131415161718192021222324252627282930
20P
FUNC
SPK B
HDATA
SPK A
10KX8
ENCODER_A ENCODER_B
HCLK
OPSEL DATA
OPSEL STB
RXD1
TXD1
+5V
OPSEL CLK
GND
VD8
9
SPK A
SPK B
123456789
NAD M3
DB714DB613DB512DB411DB310DB29DB18DB07E6R/W5RS4RST3VCC2GND
22
15
17
23
VCC
U86
89C51RD68
OPSEL DATA
OPSEL CLK
VOLR STB
Q86 2SA1015
VOLR DATA
P1.2/ECI
P1.5/CEX227P1.4/CEX125P1.3/CEX0
RESET
PSEN
ALE/PROG
P3.0/RXD P3.1/TXD P3.2/INT0 P3.3/INT1
P3.4/T0 P3.5/T1
P3.6/WR
P3.7/RD
P4.344P4.4
50
46
VOLR CLK
VOLL CLK
VOLL DATA
VOLL STB
TONE
+5V
R824
10K
R823 22
19 21 54 55 56 58 59 61 64 65 49 48 51
100uF/25V C813
P1.0/T2 P1.1/T2EX P2.0/A8 P2.1/A9 P2.2/A10 P2.3/A11 P2.4/A12 P2.5/A13 P2.6/A14 P2.7/A15 XTAL1 XTAL2 VSS
IR OUT
ZERO L
+5V
P0.7/AD73P0.6/AD65P0.5/AD56P0.4/AD49P0.3/AD311P0.2/AD212P0.1/AD114P0.0/AD0
P1.6/CEX328P1.7/CEX429P5.716P5.613P5.510P5.48P5.37P5.263P5.162P5.060P4.757P4.653P4.5
ZERO R
SPK A
SPK B
OPSEL STB
C816
0.1U
R843
1
+5V
C821
C815
0.1u
0.1U
30 2
EA
67 68 34 39 40 41 42 43 45 47 20
P4.0
24
P4.1
26
P4.2
+5V
R852
10k
R853
R850 10k
Q88 2SC3326
R851
10k
R848
10k
R849 10k
R847
10k
R831
10K
U82
3
Vss
2
GND
1
Signal
HS0038B4
+5V
10k
R846 10k
Q87 2SC3326
Q89
2SC3326
+5V
C817
0.1U
IR IN
R816 3k3
PROTECT
R815
10k
C810 1N/50V
C814 100uF/25V
R834
10K
RXD TXD IR V IR S
STBY LEDA LEDB HCLK HDATA
FUNC
VOLA
+5V
R828 10K
2SC1815
R826
10K
C812
10N
J81
1 2
CON2
R837
R844
10K
Q85
R845
10K
10K
U84C
U84D
7 14
7 14
10
11
74LS00N
U84A
3
74LS00N
U85D
11
10
U85A
3
74LS00N
C
TEXT
BE
2SC3326 2SC1815 2SA1015
9
74LS00N
U84B
5
4
74LS00N
9
4
5
12
13
+5V
C811
0.1uF
1
2
74LS00N
12
13
+5V
1
2
+5V
R825
10K
2
TEXT
13
TCM810
1. GND
2. VDD
3. RESET
10K
+5V
RESET
GNDVCC
8
6
U85C
8
74LS00N
U85B
6
74LS00N
2
TEXT
13
DTA114EKA
RESET
Q81 DTA114
+5V
C832
0.1U
C823
0.1uF
U89 TCM810
+5V
+5V
Q82 DTA114
+5V
Q83 DTA114
R835
R833 220
2 3
R836 220
1
ROB D81
BL-BUBJFB52C4V-1
100
4
2
TEXT
13
123
HS0038B4
1. Signal
2. GND
3. VCC
DTC114EKA
3-16
Page 10
6. BALANCE INPUT BOARD
JIRA1
R501
R502
R52
330
C51
10n/63V
R51
0R
100
100
C58
0.1uF/50V
+20VR
U52B
74HCU04
U52A
34
74HCU04
R574
5.6K
U51
OPTOISO1
IR IN JIRB2
IR OUT1 JIRB1
IR OUT2
RS232
1 2 3 4 5 6 7 8
DB9
PJ1
+12VOUT
R53
0R
IRout IR in
232t 232r trigger+ trigger-
CZ501
14 13 12 11 10 9 8 7 6 5 4 3 2 1
CON12
TO CON_SCH CZ93
+20VR
C52
Q537
2SC3324
VCC
Q536 2SC2983
Q538 2SC3324
0.1uF
R573 10K
D51 12V
R575 10K
12
R572
12
-20VR
VCC
-20VL
+20VL
C558 100N
INPUT1 XLR
INPUT2 XLR
R512 220
R513
220
D518 12V
R511 220
R514 220
C559 100N
D519
12V
D520 12V
D521 12V
C59 220N
R516 120K
R517 120K
C510 220N
C511 220N
R518 120K
R519 120K
C512 220N
C513 100P
C514 100P
C515 100P
C516 100P
R54 10
2
R55 10
R56 10
2
R57 10
R520 1Meg
L53
220uH X2
R521 1Meg
R522
1Meg
L54
220uH X2
R523
1Meg
R524
75
334
R525
75
R526
75
334
R527
75
R570
R556 4K7
R571
R557 4K7
160
160
+20VL
Q525 2SC3324
Q516 2SA1312
-20VL
+20VR
Q531 2SC3324
C555
0.1u
Q523 2SA1312
-20VR
C538
0.1uF/50V
C556
33U/16V
C541
0.1uF/50V
C550
0.1uF/50V
C545
0.1uF/50V
R581 10K
C557 33U/16V
C554
0.1u
R580 10K
CZ504
1 2 3 4 5 6 7 8
CON12
TO PRE_SCH CZ101
C521 22P
+20VL
Q524 2SC2983
R558 4k7
-20VL
R530 2k2
Q526 2SC2983
C540
0.1uF/50V
+20VL
+20VR
C542
0.1uF/50V
Q527 2SC2983
R560 4k7
R536 2k2
Q532 2SC2983
C543
0.1uF/50V
+20VR
C539
0.1uF/50V
R540
2K21 1%
R541
2K21 1%
-20VR
R559
2K2
R562
49.9
R561
2K2
R563
49.9
Q59 2SA1312
C546
47p
R564 100
Q518 2SA1312
C548 47p
R565 100
D52
1N4148
R528 1K
C501 220P
4
112
C503 220P
R529
1K
C504 220P
Q56 2SK209
112
4
C506 220P
C502 470pF
R531 1K
C505 470pF
2SA1312
Q54 2SK209
Q55 2SK209
Q57 2SK209
R535 1K
Q58
C517
160p
C552
0.1uF/50V
C519 160p
Q512
2SA1312
D54
1N4148
Q513 2SA1312
C536
160P
C553
0.1uF/50V
C537 160P
Q517 2SA1312
C518 22P
R532 1K
C551
0.1uF/50V
R533 1K
D55 1N4148
C520 22P
R537 1K
C544
0.1uF/50V
R538 1K
C522 22P
D511 1N4148
R542 100
L51
100uH
R566 470
R551
2K21 1%
R544 100
L52
100uH
R568 470
R553
2K21 1%
R546 4K7
Q514
2SA1312
R547 4K7
Q519 2SA1312
R543 100
R567 470
R545 100
R569 470
Q528
2SC3324
D56 1N4148
D57 1N4148
D58 1N4148
Q533
2SC3324
D5121N4148
D5131N4148
D5141N4148
R576 3K
Q510 2SA1312
R577 3K
Q520 2SA1312
R554 3K
Q511 2SA1312
Q529 2SC3324
C534
10uF
C524 33P
C530 47P
R555 3K
Q521 2SA1312
Q534 2SC3324
C535
10uF
C527 33P
C531 47P
R552 2K21
R550
2K21
R548 10K
R549 10K
Q515
C525 33P
Q522
C528 33P
2SA1312
2SA1312
D53 1N4148
C526
33P
Q530 2SC3324
R534 1K
D515 1N4148
C529
33P
Q535 2SC3324
R539 1K
C532 100p
D59
1N4148
D510
1N4148
C533 100p
D516
1N4148
D517 1N4148
3-17
Page 11
7.POWER BOARD
S1 SW SPST
AC INLET PLUG AC MALE
CZ73
16 15
+20VL
14
-20VL
13
TONE
12
VOLA
11
VOLL_CLK
10
VOLL_DATA
9
VOLL_STB
8
VOLR_CLK
7
VOLR_DATA
6
VOLR_STB
5
FUNC
4
HDATA
3
HCLK
2
ZEROR
1
CON16
TO CON_SCH CZ97
+V74L -V74L
P601 CON1
1
P602 CON1
1
P603 CON1
1
GND
P604
CON1
1
GND
TO AMP_SCHP301 P302 P303 P304
CZ603
1 2 3 4 5 6 7 8 9
10
CON10
TO AMP_SCH CZ302
CZ75
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16
CON16
TO CON_SCH CZ92
P701 CON1
1
P702 CON1
1
P703 CON1
1
GND
P704
CON1
1
GND
TO AMP_SCHP401 P402 P403 P404
CZ703
1
2
3
4
5
6
7
8
9 10
CON10
TO AMP_SCH CZ402
PROTECT
SPK A
PROTECT AC DET L SPK A SPK B
DGND DGND
-20VR +20VR IR IN IR OUT
5V TXD RXD TRIG­TRIG+ OPSEL_CLK OPSEL_DATA OPSEL_STB ZEROL
SPK B
-20VR
+20VR
C78 CAP
1
3
2
AC DET R
EMI FILTER
AC
GND
AC
EMI FILTER
C601
4.7uF/25V
D613 BAV21
+20VL
-20VL
D601
1N4148
R656 100K
C646
22u/80V
C647
22u/80V
R756
BAV21
100K
D713
C746 22u/80V
C747
22u/80V
-20VL
+V71L
-V71L
-20VR
+V71R
-V71R
R601
22K
R661 220K
C660 1uF/50V
Q621
2SA1015
R669
9K1
R761 220K
C760
1uF/50V
Q721
2SA1015
R769
9K1
AC
AC
D614
6.8V
R631
10K 1% 1W
C644
22n
C645
22n
R731
10K 1%1W
C744
22n
C745
22n
R729
10K 1% 1W
4
5
R658 62K
10u/100V
D608
1N4148
R629
10K 1% 1W
6.8V D714
R758 62K
C742
10u/100V
D708
1N4148
R671
10
R670
15K
C642
R771
10
R770
15K
2
3
R667 100K
R767 100K
4.5V
2
3
R628 5k1 1% 1W
R630 2K 1%
R627
1K
C643 10u/100V
R728 5k1 1% 1W
R726
1K
R730 2K 1%
R727
1K
C743 10u/100V
8
4
D616 1N4148
C667 1uF/50V
R626
1K
8
4
D716 1N4148
C767 1uF/50V
-11.9V
IC605A TL082BD
1
C669
10u/50V
C640
47P
D607
C641 47P
11.9V
IC705A TL082BD
1
C769
10u/50V
C740
47P
1N4148
D707
1N4148
C741 47P
R666 10
C664 10u/50V
R654
10K
ISC2
2SC2240
D606
1N4148
1N4148
R766
10
C764 10u/50V
R754
10K
ISC
2SC2240
D706
R665
15K
IC605B TL082BD
7
Q611
Q612
KSA1220
R765
15K
IC705B TL082BD
7
Q711
Q713 2SA970
Q712
KSA1220
D615 1N4148
+20VR
R659 10K
KSC2690
R625
2K2
Q613 2SA970
D715 1N4148
+20VR
R759 10K
Q709
KSC2690
Q710
2SC2240
R725 2K2
C92 4700P
Q620 2SC1815
R664
9K1
6
5
R602 91K
Q601 2SC1815
Q609
3R3 1/2W FS
Q610
2SC2240
D605
1N4148
100u/100V R621 1K
R623
3R3 1/2W FS
Q720 2SC1815
R764
9K1
6
5
C762 1uF/50V
R702 91K
Q701 2SC1815
3R3 1/2W FS
D705
1N4148
R721 1K
R723
3R3 1/2W FS
Q92 2SA1015
+20VL
R655 220K
R652
C662
18K
1uF/50V
C661
10uF/50V
D619
R622
R620
1K
+20VL
100 R693
R624
1K
C639 100u/100V
C637
R619
1K
R617 1K
+20VR
R755 220K
V0V0
2.9V @ 4ohms/30W
0V
C761
10uF/50V
R722
R720
1K
+V24
R793 100
R724 1K
C737 100u/100V
R719
1K
R717 1K
TRIG+
R98 100
RL91 DH12D1-O(M)
BAV21
R643
47K
5V6
R618 1K
C636 100u100V
C605
0.1uF
R716
1K
R718 1K
C736
100u/100V
C705
0.1uF
D617
VR701
D717 BAV21
R743
47K
D719 5V6
VR701 6K8
C739 100u/100V
R94 22K
1
R616 1K
R752
18K
R95
12K
+V74L
2SA970
6K8
C638
C634
C635
2SA970
C738
C734
1000u/100V
Q605
R651 220K
100u/100V
1000u/100V
100u/100V
C735
-V74L
1000u/100V
R751 220K
-V74R
1000u/100V
Q705
D91 1N4148
+V74R
1
OP91
OPTOISO1
OP92
OPTOISO1
R97
4.7k
R610
0.025/3W 2%
1N5404
R613 470K
C632 22n/100V
C633 22n/100V
R713 470K
C732
22n/100V
C733 22n/100V
D604
R636 680k
R736 680k
FP
R611 100 1%
2SA970 Q606
R612 9K1 1%
+20VL
-20VL
R710
0.025/3W 2%
D704
1N5404
R711 100 1%
Q706 2SA970
R712 9K1 1%
+20VR
-20VR
C666 22m/80V
C627 22m/80V
C654 22u/50V
C655 22u/50V
FP
C766
22m/80V
C727 22m/80V
C754 22u/50V
C755 22u/50V
GND
R93
2K
C622 22n/100V
C623 22n/100V
C656 22N
C657 22N
C722 22n/100V
C723 22n/100V
C756 22N
C757 22N
Q91
2SA1015
R96
10K
D92 1N4148
240/1% MF
3k6/1% MF
3k6/1% MF
240/1% MF
R708 1K
3k6/1% MF
3k6/1% MF
5V
R91
10K
Q607 2SA1015
R614
22K
R633
R632
R634
R635
Q707 2SA1015
R714
22K
D709 1N4148
R733
240/1% MF
R732
R734
R735
240/1% MF
D710 1N4148
5V
PROTECT
R608 1K
D602 BT151-500R
(TRIG)
R607
100
IN
IN
D702 BT151-500R
(TRIG)
R707
100
R609
22K
D609 1N4148
D610 1N4148
R709
22K
IN
IN
R92
10k
R606
100
ISC
R706
100
ISC
R615
22K
Q608 2SC1815
Q604 2SC1815
IC603 LM317M
C652 10u/50V
C653 10u/50V
IC604 LM337M
R715
22K
Q708 2SC1815
Q704 2SC1815
IC703 LM317M
10u/50V
10u/50V
IC704 LM337M
Q603 2SA1015
D603 BT151-500R
R605
1K
C650 22N
C651 22N
Q703 2SA1015
D703 BT151-500R
R705
1K
C752
C753
R603
1K
R604
1K
R703
1K
C720
22n/100V
R704
1K
C750 22N
C751 22N
C620
22n/100V
C621 22n/100V
C649 2m2/50V
C721 22n/100V
C748 2m2/50V
C749 2m2/50V
3
3
3
C648 2m2/50V
1
3
3
3
B706 DB104
1
CZ71
CON3
TO STB_SCH CZ906
2
C617 22n/250V
B603 KBU1004
4
2
B604
4
KBU1004
2
B606 DB104
4
2
B605 DB104
4
2
C717 22n/250V
B703 KBU1004
4
2
B704 KBU1004
4
2
4
2
B705 DB104
4
1 2 3 4 5
1
1
1
C631 22n/250V
3
1
1
1
3
C618 22n/250V
R646
0.22/1W FS
R647
0.22/1W FS
R648
0.22/1/2W FS
C630 22n/250V
R649
0.22/1/2W FS
C701
4.7uF/25V
C718 22n/250V
R746
0.22/1W FS
C731
22n/250V
R747
0.22/1W FS
R748
0.22/1/2W FS
C730 22n/250V
R749
0.22/1/2W FS
CB601
L1 L2
G H1 H2
D701 1N4148
R701 22K
L1 L2
G H1 H2
2
1
CB603
5PIN
CB604
5PIN
CB703
5PIN
CB704
5PIN
TO STB_SCH CZ902
EMI FILTER
TRANS_M3
EMI FILTER
TRANS_M3
CZ74
CON4
CZ72
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 26 27 28 29 30
CON30
1 2 3 4
TO FFP_SCH CZ81
1 2 3 4
1 2 3 4
5V DGND TRIGGER+ TRIGGER-
IR IN IR OUT DGND 5V TXD1 RXD1 SPK A SPK B OPSEL CLK OPSEL DATA OPSEL STB HCLK HDATA FUNC VOLR STB VOLR DATA VOLR CLK VOLL STB VOLL DATA VOLL CLK VOLA TONE STBY PROTECT
ZERO R ZERO L
1
2
1
CB701
2
1
2
1
1
2
2
3
3
4
4
5
5
1
1
2
2
3
3
4
4
5
5
1
1
2
2
3
3
4
4
5
5
1
1
2
2
3
3
4
4
5
5
3-18
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