Read Panasonic KX-TCD961GB Service Manual online
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KX-TCD961GB
TROUBLESHOOTING GUIDE
HANDSET: DOES NOT OPERATE.
Yes
No
Yes
No
Yes
No
1
No
Yes
No
Check the battery terminal, PCB
and battery contact.
and battery contact.
Check X1 and the surrounding
area.
Check the IC1 soldering.
area.
Check the IC1 soldering.
Disconnect the AC adaptor of
the base unit. Are clock
waveforms output to IC1 pin 10
of the handset?
the base unit. Are clock
waveforms output to IC1 pin 10
of the handset?
Check the power of IC1.
Is it 3.0V?
Is it 3.0V?
Supply 3.6V voltage to the PCB
from an external source.
from an external source.
Defective battery contact.
Replace the batteries with fully
charged ones, and set the power
switch to ON. Does " " flash
on the LCD screen of the
handset?
charged ones, and set the power
switch to ON. Does " " flash
on the LCD screen of the
handset?
No
Check the battery voltage.
Is it more than 3.6V?
Is it more than 3.6V?
Does " " remain lit, and is the
handset number displayed?
handset number displayed?
Set the handset power switch to
ON. Does " " flash on the LCD
screen of the handset?
ON. Does " " flash on the LCD
screen of the handset?
Handset: Insert the batteries.
Base unit: Connect the AC adaptor and telephone cord.
Base unit: Connect the AC adaptor and telephone cord.
2
3
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