ViewSonic E70FSB-2 - E 70F+SB - 17" CRT Display Service Manual page 23

6-5 ABNORMAL HORIZONTAL DEFLECTION
1. ABNORMAL HORIZONTAL WIDTH OF VIDEO
READJUST H -WIDTH
OK
CHECK FBT B+
ABOUT 65V AT
CHECK THE HV
CRT ABOUT 25.5KV
2. ABNORMAL HORIZONTAL VIDEO CENTER
CHECK IC401 PIN 29
RELATIVE CIRCUIT
3. ABNORMAL HORIZONTAL LINEARITY
CHECK L401, Q426, Q428,Q431
ViewSonic Corporation
NG
24.5KV
CHECK THE RELATIVE
OF Q404, Q405, &
CHECK THE
CIRCUIT OF
20
Confidential – Do Not Copy E70f-5_E70fB-5_E70fSB-5