Xerox Phaser 3120 User Manual

8-16
SCHEMATIC DIAGRAMS
Service Manual
HVPS Circuit Diagram (2/2)
D503
D1NL20U
5V
R413
1/2W 100K
C407
103
C505
104
D402
1N4148
OPC
1
C402
102
R505
10K
+
C113
25V 47uF
MHV-PWM
¡
R410
1/2W 560K
BIAS-sen
R513
1/2W 50K
R407
100K
ZD401
2.7V
6
ZD402
2.7V
R501
47K
R408
470
¡
GND
ZD501
2.7V
C405
104
R404
10K
Q402
C945C-Y
7
D401
1N4148
D501
1N4148
SUPPLY
R512
30KF
¡
BIAS-sen
1
+
C112
50V 10uF
IT401
C504
472
R515
MGR1/2W 15MF
C502
102
5
C506
103
R510
1/2W 1.8M
OUT
5V
ZD503
200V
C501
473
R508
470
C503
681
R502
22K
Q403
C2316
+
-
U102-D
KA324
12
13
14
IN
R504
10K
CON2-20
R503
330KF
C508
103
R409
1/4W 4.7
Q501
A708-Y
ZD403
130V
2
D404
4KV
R401
47K
+
-
U102-C
KA324
10
9
8
4
24VS
5V
C510
3KV 101
R402
22K
R412
30KF
C406
103
MHV-sen
CON2-19
5
D502
1N4148
R405
10K
D504
4KV
Q401
A708-Y
C409
3KV 471
R406
5.6K
C404
472
Q503
C2316
2
5V
DEV
20K
MHV
20K
R511
MGR1/2W 10MF
C509
3KV 471
MHV-sen
DEV
Q502
C945C-Y
4
24VS
5V
KA7805
R506
5.6K
D403
D1NL20U
MHV
¡
IT-01
R411
MGR1/2W 20MF
U103
IT501
R514
1/2W 50K
ZD502
2.7V
R509
1/4W 10
¡
R507
100K
C410
221
C507
103
¡
6
24VS
C403
331
BIAS-PWM
7
C401
473
C408
103
IT-01
R414
MGR1/2W 15MF
R403
1.5M

Xerox Phaser 3120 Specifications

General

Brand	Xerox
Model	Phaser 3120
Category	Printer
Language	English