Troubleshooting By Symptom (Handset) - Panasonic KX-TG1711LAB Service Manual

Table of Contents

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.

Symptom

Battery strength is not indicated correctly by Battery icon.

You cannot hear the caller's voice.

You cannot use handset a little away from base unit

even if the handset is within range of the base unit.

Does not link between base unit and handset.

The Audio level is high or low.

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.27)

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.36) is required beforehand.

The connections of simulator equipment are as shown in Adjustment Standard (Handset) (P.38).

Items

Adjustment

(A) Battery

Supply

Confirmation

(B) VDDDCDC2

Supply

Confirmation

(C)* BBIC Confirmation

(D) Charge Control Check &

Charge Current Monitor

Check

(E)* Charge Detection (OFF)

Check

Check item (A)-(C), (F)-(G).

Check item (A)-(C), (H).

Check item (O).

Point

1. Confirm that the consumption current is < 200mA, that is, there is no short

circuit.

1. Confirm that the voltage between VDDDCDC2 and GND is 3.3V ± 0.3V.

1. BBIC Confirmation (Execute the command "getchk").

2. Confirm the returned checksum value.

Connection of checksum value and program number is shown below.

ex.)

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.

1. Stop supplying 6V to TP5(+) and TP6(-).

2. Execute the command "charge".

3. Confirm that the returned value is 00 (hex).

Remedy (*2)

You don't have DECT Tester.

Procedure

checksum value

program number

DCN2EA

011B

KX-TG1711LAB/KX-TGA171LAB

You have DECT Tester.

(Model Number : CMD60)

Check item (A)-(C), (F)-(G).

Check item (A)-(C), (H)-(K), (M).

Check item (I), (L).

Check item (A)-(C), (H)-(N).

Check item (O).

Check or

Replace Parts

C143,

R102,

L104

C140,

L103,

IC101

C141,

R201,

C102,

C135,

C120, C131

C803,

C825,

C110,

C802,

C804,

C148,

D107,

C109,

R121, C186

IC103,

C140,

L103,

R107,

IC101,

C141,

R201,

C102,

C135, C120

IC103,

X101,

C122,

C123,

C127

C101,

C160,

R101,

C161,

Q101,

Q102,

C142,

R108,

IC103