Xerox SB WA340 Service Manual
SCHEMATIC DIAGRAM-1
POWER CIRCUIT
: -B SIGNAL LINE
: +B SIGNAL LINE
: MAIN SIGNAL LINE
TO
MAIN CIRCUIT
(JK700) OF
SA-MT1P/PC-S,
(JK300) OF
SA-HT700P/PC-S
CN501
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
E501
K4CZ01000027
AC1
1
DC_DET
2
AC2
3
SYS6V
4
HP_CNT
5
D.GND
6
FL
7
HELP
8
A.GND
9
A.GND
FR
SL
A.GND
SR
C
A.GND
SW
A.GND
PCONT
MUTE A/CNTR SURR
SYNC
FL1
AC3
FL2
AC4
C551
0.01
R501
4.7K
R502
4.7K
R506
15K
R505
15K
R539 100
R540 100
R543 100
IC501
FLin
FRin
IN GND
SUBin
Cin
-VD
+VD
SRin
SLin
RELAY
-Di SENS
+Di SENS
IH DET
DISP HMUT
R532
4.7K
R519
R557
56K
R523
820K
SL_O
120K
R520
R530 1
R531 1
26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
R513
56K
C507 18P
R514 56K
C508 18P
C506 1000P
C505 1000P
R516 56K
C501
1000P
R507
3.9K
R503
15K
R504
15K
R541
100
R542
100
D503
MA2C700A0F
C529 0.1
C502
1000P
C503
1000P
R509
4.7K
R511
3.9K
R508
R547
390K
R549 47K
R553
56K
R550
10K
C536
16V33
C504 680P
15K
R512
15K
R544
100
R402
D504
B0AACK000004
C534
50V33
R510 4.7K
C516
0.01
1K
C510 22P
R515 56K
C509 22P
R517 56K
C511 22P
R518 56K
C512 22P
C515
0.01
C517
0.01
KRA102MTA
INTERFACE SWITCH
R545
220K
D503
R548
330K
Q507
KTC3199GRTA
SWITCH
Q507
R561
100
D506
10K
D505
R560
C513
0.047
Q520
R546
1K
Q506
KRA102MTA
INTERFACE SWITCH
Q505
KTC3199GRTA
SWITCHING
C538
6.3V100
R558
R559
18
56K
R526
120K
R525
150K
R527
120K
R528
22K
Q503
6.3V220
SR_O
R524
120K
150K
C539
GND
AC IN
C_O
-VCC LOW
8
7
D502
R529
22K
C514
6.3V100
KTC3199GRTA
Q501
Q509
KTC3199GRTA
SWITCH
D505-D506
B0AACK000004
+VCC LOW
6 5
Q503
SWITCH
Q502
D501
SUB_O
-VCC HI
+VCC HI
432
FR_O
FL_O
1
27K
R522
D508
B0AACK000004
RSN311W64B-P
POWER HIC
D501-D502
B0JAPG000019
R521
10K
Q501-Q502
KTC3199GRTA
SWITCH
IC501
TO FAN
CN507
C541
16V10
D507
R566
270
D507, D519
B0AACK000004
D519
R551
4.7K
R554 820K
C537 0.1
R552
5.6K
Q508
+
1
-
2
Q508
KTA12710YTA
CURRENT AMP
Q510
KTC3199GRTA
SWITCH
Q510
R556
10K
R555
100K
C540
50V2.2
SCHEMATIC DIAGRAM-2
POWER CIRCUIT
R593
R591
470K
6.8K
C562
5600P
C563
0.082
C561
R575
50V2.2
6.8K
Q513
KTC3199GRTA
DC DETECT SWITCH
: -B SIGNAL LINE
: +B SIGNAL LINE
C564
1200P
IC502
C522
0.047
R592
C518
0.047
R533
10
C565
0.1
C0AABB000055
DUAL LOW-NOISE OP AMP
5 6 7 8
Q514
KTC3199GRTA
DC DETECT SWITCH
C520
C521
0.047
0.047
R53510R53610R53710R538
68K
C523
0.047
C569
0.047
: MAIN SIGNAL LINE
R597
10K
R594 10K
R403
100K
1234
10
C566
C519
0.047
R534
R599
22K
R571
3.3K
0.1
R596
47K
10
C552
0.1
C568
0.01
C524
0.1
Q514
C526
0.1
C525
0.1
C528
0.047
C527
0.1
Q513
R572
22K
R595
100
R573
0.1
JK501
+
FLch
-
+
FRch
-
+
SRLch
-
JK502
+
SRRch
-
+
CENTER
-
3
2
SUB WOOFFER
1
CN506(W506)
C560
50V10
Q511
KTC2026
VOLTAGE REGULATOR
C544
50V100
D509
C543
1000P
C567
50V10
D509, D533
B0BA5R100013
R568
150
D533
R569
3.9K
D510
B0BA9R600002
R598
1.5K
R567
1.5K
C545
0.1
R570
10K
D515
C546
35V3300
D517
D515, D516
B0EAKM000085
C547
35V4700
D513
D514
D511-D514,D517-D518
B0HARM000017
C530
1000P
C550
0.01
C548
35V4700
D511
D512
R565
3.9K
C531
1000P
1000P
E500
K4CZ01000027
D516
C549
35V3300
D518
K5G502AA0002
C532
C554
0.1
C553
0.1
FP1
C533
1000P
PCONT
SYS6V
3
3
2
2
1
1
H505B/W505
FP1
1
2
GND
3
SYNC
4
5
HELP
6
7
D524
SLI325URCT31
H505A/W505
1
2
3
4
5
6
7
8
9
10
11
12
CP502
TO
AC INLET
CIRCUIT
(CN502) ON
SCHEMATIC
DIAGRAM-3
R577
1.5K
LED
CIRCUIT
CN503
TO
TRANSFORMER
CIRCUIT
(H500/W500) ON
SCHEMATIC
DIAGRAM-3
Loading...