- 24 -
NO
YES
Input full white pattern to monitor
Check the voltage at pin 2 of IC502?
(PWM WAVE FORM)
Check replace IC502
Q605,Q607 base input exists?
Check replace
Q605, 12V
Check and replace pin
12 of the IC802?
NO
YES
YES
5-2-11 ACL Failure
Is Screen voltage (550
±
50V) right?
Check Screen control
voltage
and FBT
Does Q201 collector pulse
(35Vp-p) exist?
Check 80V Line
Does Q201 base drive
wave form exist?
Check The G1
Check and replace IC201
NO
YES
NO
YES
NO
YES
5-2-10 Visible Retrace
Q201 COLLECTOR
G1
IC502 2pin PWM