WQ-740W/WQ-780W
– 9 –
Figure 9 SCHEMATIC DIAGRAM (2/6)
7
8
9
10
11
12
Q302
9014 C
MUTE
C342
470/16
Q508
9014 C
MIC AMP.
R557
1K
R558
33
C533
4.7/50
R556
150K
C532
500P
C341
4.7/50
R344
4.7K
R343
330
R346
470K
C343
500P
R552
4.7K
R555
4.7K
C345
0.0047(ML)
R553
680
R554
680
R534
4.7K
C346
4.7/50
R351
1K
SW402-B
D519
1N4001
VR301
50K(B)
D507
1N4001
R341
10K
R531
1K
Q303
9014 C
MIC AMP.
C344
4.7/50
C414
0.0033(ML)
R416 10K
C417
0.0033(ML)
R415 10K
R349
2.2K
C347
10/16
R350
3.9K
R345
1K
D520
1N4148
SW401-C
R450
4.7K
D517
1N4148
R565
5.6K
C536
47/16
R566
100K
D402
1N4148
ON
OFF
LIVE
HALL
MIC
VOLUME
SW401-B
SW402-A
OFF
ON
HALL
LIVE
SW402
SURROUND
ON/OFF
SW402
SURROUND ON/OFF
SW404
FUNCTION
SELECTOR
CNS105
CNS1
SW502
TAPE1 MAIN
SW501
TAPE2 MAIN
SW503
TAPE2 PLAY
–
+
M
M501
TAPE MOTOR
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
R568
1K
C537
10/16
C535
4.7/50
C450
2.2/50(N.P)
C459
2.2/50(N.P)
SW401-A
HALL
LIVE
SW401
SURROUND
MODE SELECT
MIC1
MIC2
MICROPHONES
MIC101
CNS109
CNH109
1
1
2
2
BUILT-IN
MICROPHONE
2
3
4
5
6
7
1
CN207
P12 1-F
FROM GRAPHIC
EQUALIZER PWB
CN4
TWL
GND
GND
L-CH
R-CH
TWR
CNH106
1
2
3
4
5
6
CNS106
1
2
3
4
5
6
SP4
SURROUND
SP2
FULL-RANGE
SP1
FULL-RANGE
SP3
SURROUND
L-CH SPEAKERS
R-CH SPEAKERS
Q510
9014 C
MUTE
R567
22K
R422
120
R423
120
4
6
7
9
8
1
14
12
13
11
10
3
2
5
IC402 LA4508
POWER AMP.
C430
100/16
C428
0.01(ML)
C427
0.01(ML)
C469
220/16
D401
1N4001
C437
470/25
C426
100/16
C425
100/16
C424
0.0015(ML)
C423
0.0015(ML)
C422
1/50
Q402
9014 C
POWER MUTE
Q401
9014 C
POWER MUTE
C421
1/50
R421
10K
R442
10K
R441
10K
R420
10K
F1
C429
100/16
C433
1000/10
C434
1000/10
C432
0.18(ML)
C431
0.18(ML)
J1
HEADPHONES
C440 10/16
R440 27K
Q501
8050 C
VOLTAGE
REGULATOR
R501
4.7
D518
1N4148
FUSE
RESISTOR
FUSIBLE
D305
1N4148
D525
1N4148
Q506
2SB1370
SWITCHING
R535
330/1W
R548
100
Q507 9014 C SWITCHING
R545
22K
R502
680
D522
1N4148
D509
1N4001
C505 10/16
C507 100/16
C508
0.1
R564
22K
D524
1N4148
D505
SW404-B
CD/LINE
RADIO
TAPE
R537
10K
CNS110
CNH110
1
2
C504
0.1
C503
0.1
D504
D503
C501
0.1
C502
0.1
D501
F501
T2A L250V
1
2
T501
POWER
TRANSFORMER
AC220-240V
50/60Hz
AC110-127V
50/60Hz
SO501
AC POWER
INLET SOCKET
AC110-127V/
220-240V
50/60Hz
SW505
VOLTAGE
SELECTOR
D502
C522
3300/25
D523
1N4148
BATTERYS
DC15V['' D '' SIZE(UM/SUM-1,
R20 OR HP-2)BATTERYx10]
CNS102
R419
3.3K
R418
3.3K
CNS101
VCC
GND
LO0
RO0
RI0
LI0
1
2
3
4
5
6
C407
10/16
C473
0.068
C472
0.068
C474
820P
R471
8.2K
R472
8.2K
C471
820P
VR401-B
50K(B)
VR401-A
50K(B)
CNH102
VOLUME
FROM GRAPHIC EQUALIZER PWB
CN205
P12 1-C
VOLUME
A
B
MAIN PWB-A
SW401
SURROUND
MODE SELECT
SW401-D
HALL
LIVE
SW403
DUBBING SPEED/
BUILT-IN MICROPHONE/
FM MODE
SW403-A
R217
330
C529
0.022
D515
1N4148
C530
4.7/50
SW404-A
CD/LINE
RADIO
TAPE
SW404
FUNCTION
SELECTOR
D526
1N4148
48
6
2
C223
0.0015
MIC/FM MONO
L/FM STEREO
H/FM STEREO
D501~D504'RL202DC
T1.25A
L250V
POWER PWB-C
VOLUME PWB-B1
1
2
3
4
5
2
3
4
5
1
1
5
SW401
SURROUND
MODE SELECT
