6-3 NO BLANKING
NG
OK
CHECK THE
CIRCUIT OF
CHECK THE RELATIVE
CHECK G1 RELATIVE
CHECK R859 ON VIDEO
FBT PIN 4 ON MAIN
OF Q601, Q707
6-4 HOR./OSC/DEF/HV CIRCUIT FAULT
1. NO RASTER (DISCONNECT WITH SIGNAL CABLE)
NG
OK
OK
OK
NG
NG
NG
CHECK THE COLLECTOR
CHECK THE COLLECTOR
RELATIVE CIRCUIT
RELATIVE CIRCUIT
CHECK Q402,
CHECK T401, T402, Q402,
ABOUT 3Vpp
OF Q403 ABOUT 1200Vpp AT
D408, C418, C419, H-DY,
CHECK IC401 PIN 8 WAVE FORM
CHECK IC401 PIN 26~29,
CHECK IC401 PIN 10 ABOUT 12
CHECK IC401 PIN 10 RELATIVE
OF Q402 ABOUT
CHECK
T401,T402,Q402,Q403,CD408,D408,
C418,C419,H-DY,B+
Q705.
ViewSonic Corporation
Confidential – Do Not Copy
E70f-5_E70fB-5_E70fSB-5
19
