Table of Contents
Advertisement
7 Troubleshooting
7-2-8 S_Pin, Trap, Para, V_Lin, Pin_Bal Failure
Key check (7-2-19)
Is IC401's Pin 24 OK?
8
Yes
Refer to 7-2-13 I
2
7-2-9 Tilt Failure
Check tilt connector. (CN303)
Key check (7-2-19)
Does the PWM duty of
IC202's Pin 17 vary, pressing tilt
and + or – key?
No
Does the output voltage of
IC302's Pin 1 vary, pressing tilt and
+ or – key?
Yes
Check and replace CRT.
7-12
No
C Failure.
No
No
Check and replace IC401.
Check and replace IC302, IC202.
Check and replace IC302, +13 V
and –12 V line.
WAVEFORMS
8
1.12 V (IC401, #24)
CH1 P-P = 1.12 V
CH1 RMS = 3.094 V
CHA42*7L/5**7L
Advertisement
Table of Contents
