8 TROUBLESHOOTING BY SYMPTOM (BASE UNIT AND
CHARGER UNIT)
Ifyour unit has below symptoms, follow the instructions in remedy column. Remedies depend on whether you have DECT tester
(*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.
(*2): Refer to
Check Point (Base Unit)
(P.28)
8.1.
Check Point (Base Unit)
Please follow the items below when BBIC or EEPROM or FLASH ROM is replaced.
Note:
After the measuring, suck up the solder of TP.
*:
PC Setting
(P.41) is required beforehand.
The connections ofadjustment equipments are as shown in
Adjustment Standard (Base Unit)
(P.35).
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 ofchecksum value and program number is shown below.
IC4, X1, C42,
C43, R40, C81,
C82, C84
28
KX-TG1283BXS / KX-TG1283B XT / KX-TCA122CXS / KX-TCA122CXT / KX-TCA121CXS / KX-TCA121CXT
Summary of Contents for KX-TG1283BXS
Page 55: ...55 KX TG1283BXS KX TG1283BXT KX TCA122CXS KX TCA122CXT KX TCA121CXS KX TCA121CXT ...
Page 64: ...22 2 Handset 64 KX TG1283BXS KX TG1283BXT KX TCA122CXS KX TCA122CXT KX TCA121CXS KX TCA121CXT ...
Page 89: ...Memo 89 KX TG1283BXS KX TG1283BXT KX TCA122CXS KX TCA122CXT KX TCA121CXS KX TCA121CXT ...
