9 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.33)
9.1. 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.36) is required beforehand.
The connections of simulator equipments are as shown in Adjustment Standard (Handset) (P.38).
Items Adjustment
Point
Procedure Check or
Replace Parts
(A) 4.0V Supply
Confirmation
- 1. Confirm that the consumption current is < 200mA, that is, there is no short
circuit.
2. Confirm that the voltage between TP4V and GND is 4.1V ± 0.2V.
IC4, F1, R21,
R4, C1, L2,
D1, C15, C33,
C34, C14, Q1,
R111, R2,
C26, X1, C16,
C17
(B) VBACK Status
Confirmation
- 1. Confirm that the voltage between VBACK and GND is 0V ± 0.4V. IC4, F1, R21,
R4, C1, L2,
D1, C15, C33,
C34, C14, Q1,
R111, R2,
C26, X1, C16,
C204
(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.
IC4, X1, C16,
C204
(D) Charge Control Check &
Charge Current Monitor
Check
- 1. Apply 6V between TP20(+) and TP21(-) 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 100mA.
4. Confirm that the charge current is stable.
IC4, D2, L4,
L5, Q2, Q3,
R6, C26, F1,
R21, R4, C1
(E)* Charge Detection (OFF)
Check
- 1. Stop supplying 6V to TP20(+) and TP21(-).
2. Execute the command “charge”.
3. Confirm that the returned value is 00 (hex).
IC4, D2, L4,
L5, Q2, Q3,
R6, C26, F1,
R21, R4, C1
33
KX-TG1105RUS / KX-TG1105R UT / KX-TG1106R US / KX-TG1106R UT / KX-TGA110RUS / KX-TGA110RUT
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