Mitsubishi Electric 1786FD2 Service Manual page 86

MEA 1786FD2 CRT Monitor Service Guide
11. HORIZONTAL SIZE CAN NOT CONTROL
HORIZONTAL SIZE CAN NOT CONTROL
NO
CHECK IC201
YES
PIN11 ABOUT
para wave
NO
CHECK +12V REPLACE
REPLACE
12.BRIGHTNESS CAN NOT CONTROL
BRIGHTNESS
CAN NOT
CONTROL
CHECK Q314,Q315,Q316
YES
CHECK Q317,Q318
YES
CHECK BRITE SIGNAL
ADJUSTABLE
YES
CHECK C224,Q202
R241,Q203,R232
R231,+48V,+8V
NG
REPLACE
CHECK UC CIRCUIT
CHECK UC CIRCUIT
NO
REPLACE
Trouble Shooting
11