Check Power - Panasonic KX-PRX120W Service Manual

KX-PRX120W/KX-PRXA10W
9.1.1.

Check Power

9.1.1.1. Check Power (Base Unit)
Is the AC Adaptor inserted into AC outlet? (*1)
Is input of IC1 about 5.5 V - 8 V?
Is the output voltage of IC2 about 2.85 V?
Is the Collector of Q8 about 1.8 V?
Is the Collector of Q9 about 2.5 V?
Is the output voltage of BBIC (IC7:43) about 3.0V?
Is the output voltage of BBIC (IC7:44) about 3.0V?
Is BBIC (IC7: 62) High?
Does BBIC (IC7: 10) oscillate at 10.368 MHz?
Check BBIC (IC7).
Cross Reference:
Power Supply Circuit (P.9)
Note:
(*1) Refer to Specifications (P.6) for part number and
supply voltage of AC Adaptor.
YES
YES
YES
YES
YES
YES YES
YES
YES YES
NO
Check C32, C36 are not shorted.
YES
Check AC Adaptor.
NO
Check Power Supply Circuit.
NO
NO
NO
Check BBIC (IC7).
NO
NO
NO
Check X1.
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