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KX-TGH260/KX-TGH262/KX-TGH263/KX-TGH264/KX-TGHA20/KX-TGA20
10.1.1.
Check Power
10.1.1.1. Base Unit
Cross Reference:
Power Supply Circuit/Reset Circuit
(P.14)
Note:
BBIC is IC501.
(*1) Refer to
Specifications
(P.7) for part number and
supply voltage of AC adaptor.
(*2) Refer to
Circuit Board (Base Unit_Main)
(P.77).
10.1.1.2. Handset
Cross Reference:
Power Supply Circuit/Reset Circuit
(P.22)
Is the AC Adaptor inserted into AC outlet? (*1)
Is output voltage of AC adaptor 5.5 V?
YES
Check
AC Adaptor.
Check VDD1(1.
8
V) :Test point (VDD1)
(*2)
OK
Check
Power Supply Circuit
.
NO
NO
NO
NO
RSTN: Reset = "High"?
(*2)
YES
Check
Reset Circuit
.
Check Xtal CLK=10.
3
6
8
MHz?
(*2)
YES
Check X501.
Check BBIC.
Check
Power Supply Circuit/Reset Circuit
.
Check X1, C52, C5
3
.
Is the voltage of TP-VBAT 2.
3
V more?
Check the
b
attery and around BATT+ and
BATT- are not shorted.
Is the
b
attery inserted to BATT+ and BATT-?
Does BBIC (IC1:
3
6) oscillate at 10.
3
6
8
MHz?
YES
YES
NO
NO
Is the voltage of TP 1.
8
V a
b
out 1.
8
V?
YES
Check BBIC (IC1).
YES
