Read Panasonic KX-TG5511CAB / KX-TG5511CAJ / KX-TGA550RUB / KX-TGA550RUJ / KX-TGA551RUB / KX-TGA551RUJ (serv.man2) Service Manual online
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KX-TG5511CA/KX-TGA550RU/KX-TGA551RU
9.1.1.
Check Power
9.1.1.1.
Base Unit
Is the AC Adaptor inserted into AC outlet? (*1)
Cross Reference:
Power Supply Circuit (P.10)
Note:
(*1) Refer to Specifications (P.7) for part number and
supply voltage of AC Adaptor.
supply voltage of AC Adaptor.
9.1.1.2.
Handset
Cross Reference:
Power Supply Circuit/Reset Circuit (P.13)
Is input of IC1 about 6.5 V - 8 V?
Check C32, C36 are not shorted.
Check AC Adaptor.
Check Power Supply Circuit.
Is the output voltage of IC2 about 3.0 V?
Does BBIC (IC7: 10) oscillate at 10.368 MHz?
Check X1.
Check BBIC (IC7).
Is the Collector of Q8 about 1.8 V?
Is BBIC (IC7: 61) High?
Check BBIC (IC7).
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
Is the Collector of Q9 about 2.5 V?
YES
Is the output voltage of BBIC (IC7:43) about 2.5V?
Is the output voltage of BBIC (IC7:42) about 3.0V?
YES
YES
YES
NO
NO
NO
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: 10) oscillate at 10.368 MHz?
YES
YES
YES
NO
NO
YES
YES
Is the voltage of " 1.8V" about 1.8 V?
Is the voltage of CP3.0V about 3.0V?
Check BBIC (IC1).
YES
Is the voltage of CP4.0V about 4.0V?
NO
NO
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