Read Panasonic KX-TS85GB / KX-TS85GW Service Manual online
•|
26
•|
KX-TS85GB/KX-TS85GW
1. SERVICE HINTS
2. PULSE DIALING PROBLEMS
TROUBLE SHOOTING GUIDE
SYMPTOM
CURE
Pulse will not dial.
No pulse, can hear dialing but no number output.
Rings, no dial tone, can't dial out, no audio circuit, dead.
No dial tone on Handset.
Memory does not work.
Unit rings, has dial tone, memory does not work.
Rings but can't answer.
Doesn't dial.
Dead.
Rings, no dial tone, no pulse or tone dial.
No rings.
No volume Handset.
Buttons stick under upper cabinet assembly. From key board.
No pulse dial.
Check Q3 and Q4. Check "DIALING MODE"
Check IC1. Check "DIALING MODE"
Check IC1.
Check Q3, Q4 and IC1.
Check IC2.
Check IC2
.
Check S1.
Check IC1.
Check IC1.
Check Q3 and Q4, D4.
Check C1, C2, R1, R2, R4 D1, Q1, Q2 and IC1.
Check IC1 and IC2.
Adjust the setting of buttons.
Check Q3, Q4 and Q6. Check "DIALING MODE"
Chack
" DIALING MODE "
pulse sound be
monitored?
" DIALING MODE "
pulse sound be
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 Q3, Q4, D4
and ZNR2.
and ZNR2.
Do pulses (0.6 Vp-p)
appear at the base of
Q3?
appear at the base of
Q3?
Does Pin 2 of IC1
output the dial pulse?
output the dial pulse?
Check D4, Q3, Q4
and ZNR2.
and ZNR2.
Check Q6.
Check IC1, and
Key matrix and
connection FFC cable.
Key matrix and
connection FFC cable.
Check IC1
X1 and C19.
X1 and C19.
NO
NO
YES
YES
YES
YES
NO
NO
Click on the first or last page to see other KX-TS85GB / KX-TS85GW service manuals if exist.