Panasonic KX-F680BX - Page 72

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KX-F680BX/KX-F2681BX
24V output OK?
Replace IC101.
24V output OK?
D201 short?
Replace D201.
5V, check
(DC-DC converter check)
5V, check
(DC-DC converter check)
24V output OK?
5V, check
(DC-DC converter check)
24V-GND short?
24V output OK?
Replace
PC101 and IC201.
Replace the whole board.
5V, check
(DC-DC converter check)
(It is difficult to fix by testing other parts.)
NO
YES
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
5V output OK?
5V check
Replace Q201.
Replace D203.
5V output OK?
Replace IC202.
5V output OK?
5V output OK?
Replace D204.
Replace peripheral circuit of IC202.