ViewSonic G90fB-4 User Manual

6-7. Abnormal horizontal linearity
AND IC101 PIN9,10,11
CHECK L401, Q426, Q420, Q427
6-8.
Abnormal vertical size
O
K
N
G
O
K
N
G
READJUST V-SIZE FUNCTION VALUE
RELATIVE CIRCUIT
CHECK VERT. OSC CIRCUIT
RELATIVE CIRCUIT
N
G
READJUST V-SIZE FUNCTION VALUE
CHECK THE VOLTAGE OF IC101
RELATIVE CIRCUIT
CHECK IC101 PIN33,34
CHECK THE IC601 PIN1 ABOUT 11.8V
PIN 4 ABOUT -12V
CHECK D601, C605
6-9. Vertical center
NG
READJUST V-CENTER
RELATIVE CKT
CHECK IC401 AND IC601
6-10. Side-pin cushion distortion
READJUST FOCUS CONTROL
NG
CHECK FOCUS CONTROL UNIT,
FOCUS LEAD WIRE, CRT SOCKET & CRT
6-11. Poor focus
READJUST FOCUS CONTROL
NG
CHECK FOCUS CONTROL UNIT,
FOCUS LEAD WIRE, CRT SOCKET & CRT
CHECK IC101 AND IC601 RELATIVE
CIRCUIT
ViewSonic Corporation Confidential - Do Not Copy G90fB-4
20

ViewSonic G90fB-4 Specifications

General

Brand	ViewSonic
Model	G90fB-4
Category	Monitor
Language	English