Read Panasonic KX-TS2361CAW Service Manual online
11
KX-TS2361CAW
8 Troubleshooting Guide
8.1.
Service Hints
8.2.
Pulse Dialing Problems
SYMPTOM
CURE
No Tone Dialing.
Check IC1, Q3, Q9, VR3, R38, R34 and R35.
Dead.
Check IC1, Q2 and Q1.
Rings, no dial tone, no pulse or tone.
Check Q1, Q2, and D1.
No rings.
Check C1, R1, R3 and IC2.
No pulse dial.
Check Q1 and Q2.
Can a pulse sound be
monitored?
monitored?
Does the voltage across
Tip (T) and Ring (R)
rapidly switch between
48 V and 10V?
Tip (T) and Ring (R)
rapidly switch between
48 V and 10V?
Check Q1, Q2, D1,
and SA1.
and SA1.
Do pulses (0.6 Vp-p)
appear at the base of
Q2?
appear at the base of
Q2?
Does Pin 10 of IC1
output the dial pulse?
output the dial pulse?
Check D1, SA1, Q1
and Q2 and POS1.
and Q2 and POS1.
Check Q2 and C6
of Pin 10 of IC1.
of Pin 10 of IC1.
Check IC1.
OK
NO
NO
YES
YES
YES
YES
NO
NO
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