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KX-TSC62SXB/KX-TSC62SXW
8 Troubleshooting Guide
8.1.
Service Hints
Dead.
Can't hear the voice from handset.
No voice transmit.
Can't tone dial.
Can't pulse dial.
No rings.
Can't change the volume for Speakerphone.
Caller ID Function doesn't work.
Caller ID Function doesn't work. (DTMF)
Can't speak with the speakerphone.
8.2.
Set Dead
Is the input voltage Q101 emitter
about 48V(line)/24V(PBX) ?
Is output of C106 positive about 3.6V
Is output of D808 cathod about 3.4V
8.3.
Pulse Dialing Problems
Can a pulse sound
be monitored?
Does the voltage
across Tip (T) and
Ring (R) rapidly
switch between 48V
and 10V ?
Check TEL line Jack.
SYMPTOM
YES
YES
YES
Check IC801 and X2.
NO
YES
NO
YES
CURE
Check IC801, X2.
Check Q401, Q431, Q433 and handset jack.
Check Q422, Q401 and handset jack.
Check IC801 (58), C481~C484, R481~R483.
Check Q301, Q302, Q305.
Check IC201.
Check IC801, R621, R619.
Check C501, C521, C502, C522, R501, R521, R507,
C507 and IC501.
Check around IC501, Q501, Q502 and Q554.
Check IC601.
NO
Check Tel Line.
NO
Check Q103,Q102 and Q101.
NO
NO
Check dial mode
in Pulse Dialing?
YES
Do pulses
NO
(3 Vp-p) appear
at Pin56 of IC801?
YES
Do pulses
NO
(3 Vp-p) appear
at base of Q305?
YES
Check Q301 and
Q302.
12
Check D808.
Change to
Pulse Dial
mode.
Check IC801,
X2.
Check Q305.
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