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8 TROUBLESHOOTING BY SYMPTOM (BASE UNIT AND
CHARGER UNIT)
If your unit has belowsymptoms, followthe instructions in remedy column. Remedies depend on whether you have DECT tester
(*1) or not.
(*1) or not.
Note:
(*1): A general repair is possible even if you don’t have the DECT tester because it is for confirming the levels, such as Acoustic
level in detail.
level in detail.
(*2): Refer to Check Point (Base Unit) (P.27)
8.1.
Check Point (Base Unit)
Please followthe items belowwhen BBIC or EEPROM or FLASH ROM is replaced.
Note:
After the measuring, sock up the solder of TP.
*: PC Setting (P.39) is required beforehand.
The connections of adjustment equipments are as shown in Adjustment Standard (Base Unit) (P.33).
Items
Check
Point
Procedure
Check or
Replace Parts
(A)
2.5V Supply
Confirmation
VDD4
1. Confirm that the voltage between test point VDD4 and GND is 2.5V ± 0.2V.
D1, IC11, C4,
C7, R10, R11,
C30, C26, C28,
L12
(B)
3.0V Supply
Confirmation
VDD3
1. Confirm that the voltage between test point VDD3 and GND is 3.0V ± 0.2V.
C2, IC1, C3,
C8, Q2, R5,
C10, R18, R19,
C11
(C)*
1.8V Supply
Confirmation
VDD5
1. Confirm that the voltage between test point VDD5 and GND is 1.8V ± 0.1V.
Q3, R6, C25,
D7, D8
(D)*
BBIC Confirmation
-
1. BBIC Confirmation (Execute the command "getchk").
2. Confirm the returned checksum value.
Connection of checksum value and program number is shown below.
IC4, X1, C42,
C43, R40, C81,
C82, C84
27
KX-TCD345RUS / KX-TCD345RUT / KX-TCA132RUS / KX-TCA132RUT / KX-TCA130RUS / KX-TCA130RUT
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