27
KX-TGC220/KX-TGC222/KX-TGC223/KX-TGCA20
9.1.1.
Check Power
9.1.1.1.
Base Unit
Cross Reference:
Power Supply Circuit/Reset Circuit
Note:
BBIC is IC501.
(*1) Refer to Specifications (P.7) for part number and supply
voltage of AC adaptor.
(*2) Refer to
9.1.1.2.
Handset
Cross Reference:
Power Supply Circuit/Reset Circuit
I
s
the AC Ad
a
ptor in
s
erted into AC o
u
tlet? (*1)
I
s
o
u
tp
u
t volt
a
ge of AC
a
d
a
ptor 5.5 V?
YES
Check
AC Ad
a
ptor.
Check VDDC (1.2 V): Te
s
t Point [VDDC]
OK
Check
Power Supply Circuit
.
NO
NO
NO
NO
RSTN: Re
s
et = "High"?
YES
Check
Reset Circuit
.
Check Xt
a
l CLK = 1
3
.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
Содержание KX-TGC220AL
Страница 10: ...10 KX TGC220 KX TGC222 KX TGC223 KX TGCA20 4 3 Block Diagram Base Unit_RF Part RXp RXn ANT1 TXp TXn ...
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