Read Panasonic KX-TG8061RUB / KX-TG8061UAB / KX-TG8061CAB / KX-TGA806RUB (serv.man3) Service Manual Supplement online
7
3.2.
Troubleshooting Guide
3.2.1.
Check Power
[Changed from original section “9.1.1. Check Power”]
3.2.1.1.
Handset
Cross Reference:
Power Supply Circuit/Reset Circuit (P.4)
3.2.2.
Check Battery Charge
[Changed from original section “9.1.2. Check Battery Charge”]
3.2.2.1.
Handset
Cross Reference:
Check Power (P.7)
Charge Circuit
3.2.3.
Bell Reception
[Changed from original section “9.1.10. Bell Reception”]
3.2.3.1.
Handset
Cross Reference:
Telephone Line Interface
Check Link
Check Link
How to Check the Handset Speaker or Receiver
Check Power Supply Circuit/Reset Circuit.
Check BBIC (IC1).
Check X1.
Is the voltage of BATT+ 2.3 V more?
Check the battery and around BATT+ and
BATT- are not shorted.
BATT- are not shorted.
Is the battery inserted BATT+ and BATT-?
Does BBIC (IC1: 8) oscillate at 10.368 MHz?
YES
YES
YES
NO
NO
YES
YES
Is the voltage of " 1.8V" about 1.8 V?
(When LED is On)
Is the voltage of CP3.0V about 3.0V?
Check BBIC (IC1).
YES
Is the voltage of CPV2 about 3.0V?
YES
Is the voltage of CP2.8V about 2.8V?
NO
NO
NO
Is BBIC (IC1: 34) high at charge state?
Check Charge Circuit.
Check Power of Handset.
Is Check Power OK?
NO
NO
YES
Does the bell sound from SPEAKER?
Check around SP+, SP- .
When bell signal coming, is there bell sound signal
at BBIC (IC1: 35, 37)?
at BBIC (IC1: 35, 37)?
NO
NO
YES
When bell signal coming, is there bell sound signal
at SP+, SP- ?
at SP+, SP- ?
YES
Check BBIC (IC1), C78, C79, C73, C72, D13,
D14 , C77, C76, R77, R76.
D14 , C77, C76, R77, R76.
NO
Check cable of SPEAKER and resistance value
of SPEAKER.
of SPEAKER.
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