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7-2-19 User Control Failure
When pressing keys,
does LED blink?
Yes
Refer to 7-2-18 Key Check.
7-2-20 Degaussing Failure
Check if degaussing coil is connected
with CN601.
When pressing cont and brit
key simultaneously, does the
voltage of IC202's Pin 6 vary from
0 V to 5 V for 2~3 seconds?
Yes
Check and replace Q601, D602,
R602, RL602.
Check and replace degaussing coil.
CHA42*7L/5**7L
No
Check knob function and space
at front cover.
Refer to 7-2-18 Key Check.
No
Refer to 7-2-18 Key Check.
7 Troubleshooting
7-23
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