Read Panasonic KX-TS2361CAW Service Manual online
13
KX-TS2361CAW
8.5.
Problems With Ringer
Check R1, C1, IC2, R3, C37, R2, C3, C2.
8.6.
How to Check the IC1 (Scanning to the key)
Connect to the telephone
line and lift the handset.
Push and hold the key "0~9".
line and lift the handset.
Push and hold the key "0~9".
Is the voltage at pin
17 of IC1 3~5V?
17 of IC1 3~5V?
Check D1, Q1, D6, D7.
Does the signal at pin
6 of IC1 3.58MHz oscillate?
6 of IC1 3.58MHz oscillate?
Check the solded pin
18 to 22 of IC1 and all
keys.
18 to 22 of IC1 and all
keys.
Check the contact
of key.
of key.
Check X1, C27, C28
and IC1.
and IC1.
Is there voltage output from
any of the pins 18 to 22 of
IC1 when any key is pressed
as shown below.
any of the pins 18 to 22 of
IC1 when any key is pressed
as shown below.
When the signals are output from
more than one pin of 13 to 16 of IC1.
more than one pin of 13 to 16 of IC1.
NO
NO
YES
YES
4 V
0 V
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