Panasonic KX-FT21BX Service Manual page 102

KX-FT21LA
Is R102, R103, R104
or R105 short or open?
YES
Replace the broken part.
24V output OK?
NO
NO
Does D201, Q201, D202 or
D203 short?
YES
Replace the broken part.
24V output OK?
NO
NO
Is R211, R222, VR201,
R224 or R225
short or open?
Replace the broken part.
24V output OK?
NO
- 76 -
(Control circuit check)
NO
YES
A
YES
A
YES
A