Panasonic KX-TGCA20EX - Check Power; Base Unit; Handset

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KX-TGC210/KX-TGC212/KX-TGC213/KX-TGC220/KX-TGC222/KX-TGCA20
9.1.1. Check Power
9.1.1.1. Base Unit
Cross Reference:
Power Supply Circuit/Reset Circuit (P.12)
Note:
BBIC is IC501.
(*1) Refer to Specifications (P.7) for part number and supply
voltage of AC adaptor.
(*2) Refer to Base Unit (Main) (P.77).
9.1.1.2. Handset
Cross Reference:
Power Supply Circuit/Reset Circuit (P.12)
Is the AC Adaptor inserted into AC outlet? (*1)
Is output voltage of AC adaptor 5.5 V?
YES
Check AC Adaptor.
Check VDDC (1.2 V): Test Point [VDDC]
OK
Check Power Supply Circuit.
NO
NO
NO
NO
RSTN: Reset = "High"?
YES
Check Reset Circuit.
Check Xtal CLK = 13.824 MHz?
YES
Check X501.
Check BBIC.
Check Power Supply Circuit/Reset Circuit.
Check BBIC (IC1).
Check F1 is not open.
Check X1.
Is the voltage of BATT+ 2.3 V more?
Check the battery and around BATT+ and
BATT- are not shorted.
Is the battery inserted BATT+ and BATT-?
Does BBIC (IC1: 7) oscillate at 10.368 MHz?
YES
YES
YES
YES
NO
NO
YES
Is the voltage of +1.8V about 1.8 V?
Is the voltage of CP3V about 3.0 V?
Check BBIC (IC1).
YES
Is the voltage of CP4V about 4.0V ?
(When LED is On)
YES
NO
NO
NO