Defective Operation Grille Section; Defective Switching Power Supply Section - Panasonic KX-F1200 Service Manual And Technical Manual

10. IOI--PI--(.;flVP_. OPERATION GRILLE SECTION
10-1. NO KEY OPERATION
Is the button always
pressed?
[.o
I heck
disconnection of
CN404 (Digital board.)
YES
•. [ Repair the button.
Check IC301.
" (Operation board).
L__ Rx-i iz_
10-2. NO LCD INDICATION
I
Is the disconnection of cable and connector NO
between LCD and Operation board OK?
Repair.
I YES NO
ReplaceLCD. I ---i_ YES ---[ END I _-_
J
Check IC301. j
11. DEFECTIVE SWITCHING POWER SUPPLY SECTION
11-1.
NO OPERATION
It is necessary that power supply is connected to analog board and digital board to
test the power supply.
I 'sFI01 open? I NO
YES
-_ls Q101 short?
Is D101 short?
-_ls D103 short?
is Rl15 open?
YES
YES
I YES
I YES
Is D201 shorted?
YES
molt
--_ Is PC101 shorted? I'_
IslC2Olshorted?
IYEs+ =[
The thermal function
may operate.
Check loading side.
Replace each part. j
Replace F101, Q101, D101, D103, Rl15.
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