Panasonic KX-TG1381 - Troubleshooting by Symptom (Handset)

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KX-TG1381HKH/KX-TG1381HKV/KX-TG1381HKW/KX-TG1382HKH/KX-TGA131HMH/KX-TGA131HMV/KX-TGA131HMW
9.3. Troubleshooting by Symptom (Handset)
If your 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 (Handset) (P.31)
9.3.1. Check Point (Handset)
Please follow the items below when BBIC or EEPROM is replaced.
Note:
After the measuring, suck up the solder of TP.
*: PC Setting (P.41) is required beforehand.
The connections of simulator equipments are as shown in Adjustment Standard (Handset) (P.43).
Items Adjustment
Point
Procedure Check or
Replace Parts
(A) Battery Supply Confir-
mation
- 1. Confirm that the consumption current is < 200mA, that is, there is no short cir-
cuit.
C143, R102,
L104, C145,
C132, C131,
C140, C146,
L103, IC101,
C141, C102,
C103, C120,
D107, C109,
C125
(B) 3.3V Supply Confirma-
tion
- 1. Confirm that the voltage between 3.3V and GND is 3.3V ± 0.3V. L103, IC101,
C141, C102,
C103, R107,
Career module
(C)* 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.
Career mod-
ule, X101,
C122, C123
(D) Charge Control Check &
Charge Current Monitor
Check
- 1. Apply 6V between TP5(+) and TP6(-) with current limit of PSU to 250mA.
2. Confirm that the charge current is ON/OFF.
3. SW to decrease current limit of PSU to 75mA.
4. Confirm that the charge current is stable.
C100, Q101,
Q102, R101,
C142, R108,
Career module
(E)* Charge Detection (OFF)
Check
- 1. Stop supplying 6V to TP5(+) and TP6(-).
2. Execute the command “charge”.
3. Confirm that the returned value is 00 (hex).
C100, Q101,
Q102, R101,
C142, R108,
Career module
(F)* Battery Monitor Check &
Adjustment (Important)
- 1. Apply 2.3V ± 0.005V between BATTERY (+) and BATTERY (-) with DC power.
2. Execute the command “deactmac” to stabilize the value.
3. Then, execute the command “readbatt”. The returned value is XX.
4. Confirm that XX is between 90 and A0.
90 < XX < A0 (Hex)
(If XX is out of range, change BBIC)
Career mod-
ule, D107,
C109, C125