ViewSonic E70FSB-2 - E 70F+SB - 17" CRT Display Service Manual page 22

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