NEC MultiSync V520 Service Manual

5. NO RASTER
CHECK
U301 PIN 3, U402 PIN 4
H/V SYNC
NO RASTER
POWER SUPPLY
CHECK
CHECK
B+
CHECK
U301 PIN 7, U402 PIN 23,24
H/V SYNC
CHECK
T301 PIN 3 VOLTAGE
68V(AT H-FREQ.
31.5KHz)
TROUBLE IN
MCU U701
TROUBLE IN
U301, U402
TROUBLE IN
U102,Q102,D114,D111,L102
OR DEFLECTION YOKE
TROUBLE IN
Q307, Q308,T302, D307,
D308
CHECK Q307
COLLECTOR ABOUT
1050Vp-p
CHECK G1
VOLTAGE ABOUT
-45~65V
TROUBLE IN
Q304, Q305, Q306, ZD303
D318, T301, C344
TROUBLE IN
G2 VOLTAGE
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
36

NEC MultiSync V520 Specifications

General

Brand	NEC
Model	MultiSync V520
Category	Monitor
Language	English