Panasonic KX-F900 Service Manual page 56

I x, ,0o1
(3) PROCEDURE FROM OUR EXPERIENCE TO FIX
plug the AC cord
I Power ON J
- ,,-- No reaction
LCD
Black squares or any charactor come.
I
•-_ Check
power line
I (Refer to page 58)
No reaction means that Power line is
broken (short-circuit).
Turn over and take
bottom cover off.
Oscilloscope
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[]
[] r_
O
GND
BE CAREFUM
• This is the TEST with AC power on.
AC
RESET is fixed at 5V
Is pin 101 of ASlC 5V?
not 5V
like a wave form below
Check the voltge of
testing points.
(Refer to next page)
r
Check detail.
(Refer to page 58)
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