Mitsubishi Electric 1786FD2 Service Manual page 87

MEA 1786FD2 CRT Monitor Service Guide
13. SIZE REGULATION NG
H SIZE
REGULATION NG
CHECK ABL CIRCUIT
FROM FBT PIN 8
R330
MAIN BOARD
OK
CHECK ABL CIRCUIT
14.Unstable Vertical Display
Unstable Vertical Display
N
Check IC201
& Ambient
CKT
SIZE REGULATION NG
V SIZE
REGULATION NG
REPLACE R329
R258,R211
IC201 pin 24
sawtooth genentor
N
Check IC202
& Ambient
CKT
H & V SIZE
REGULATION NG
H.V. ABNORMAL
H.V.
OK
REPLACE FBT
Y
Y
IC 202
has output
Check DY
Trouble Shooting
CHECK REGULATION CIRCUIT
R329,C324,R330,HMOD,VMOD
CKT
REPLACE THE FAILURE
COMPONENTS
12