Panasonic KX-F910BX Service Manual page 70

KX-F910BX
24V output OK?
NO
Replace IC101.
24V output OK?
NO
NO
D201 short?
YES
Replace D201.
24V output OK?
NO
NO
24V-GND short?
YES
Replace
D202,PC101and IC201.
24V output OK?
NO
Replace the whole board.
(It is difficult to fix by testing other parts.)
YES
5V,check
(DC-DC converter check)
YES
5V,check
(DC-DC converter check)
YES
5V,check
(DC-DC converter check)
YES
5V,check
(DC-DC converter check)
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5V check
Replace Q201.
5V output OK?
Replace D203.
5V output OK?
Replace IC202.
5V output OK?
Replace D204.
5V output OK?
Replace peripheral circuit of IC202