Check Power - Panasonic KX-TG4763B Service Manual

KX-TG4763B/KX-TGA470B/KX-TGA405B
10.1.2. Flow Chart (Range Extender)
Power ON Range Extender
Link
Range
Cross Reference:
Check Power (P.34)

10.1.3. Check Power

10.1.3.1. Base Unit and Range Extender
Is the AC Adaptor inserted into AC outlet? (*1)
Is output voltage of AC adaptor 5.5 V?
Check VDDC (1.2 V): Test Point [VDDC]
RSTN: Reset = "High"?
Check Xtal CLK = 13.824 MHz?
Check BBIC.
Cross Reference:
Power Supply Circuit/Reset Circuit (P.12) for Base unit.
Power Supply Circuit (P.24) for Range extender.
Circuit Board (Base Unit_Main) (P.85).
Circuit Board (Range Extender) (P.93).
OK
Power ON with pressing "1", "6" and "#" of Handset
OK
YES
OK
YES
YES
Not working
Check Power
Not Link
Check Link
NG
Check the RF part
Check Link (P.41)
Check the RF part (P.42)
NO
AC Adaptor.
Check
NO
Check Power Supply Circuit.
NO
Check Reset Circuit.
NO
Check X501.
Note:
BBIC is IC501.
(*1) Refer to Specifications (P.6) for part number and
supply voltage of AC adaptor.
(*2) Refer to Circuit Board (Base Unit_Main) (P.85).
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