Troubleshooting By Symptom (Base Unit And Charger Unit) - Panasonic KX-TG9120FXS Service Manual

9.2.

Troubleshooting by Symptom (Base Unit and Charger Unit)

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 (Base Unit) (P.41)
9.2.1. Check Point (Base Unit)
Please follow the items below when BBIC or EEPROM or FLASH is replaced.
Note:
After the measuring, suck up the solder of TP.
*: PC Setting (P.58) is required beforehand.
The connections of simulator equipments are as shown in Adjustment Standard (Base Unit) (P.60).
Items
(A) 3.3V Supply Confirma-
tion
(B) 2.5V Supply Confirma-
tion
(C) 1.8V Supply Confirma-
tion
(D)* BBIC Confirmation
(E)* EEPROM Confirmation
(F)* BBIC Clock Adjustment
Check
Point
VDD3 1. Confirm that the voltage between test point VDD3 and GND is 3.3V ± 0.2V.
VDD2 1. Confirm that the voltage between test point VDD2 and GND is 2.5V ± 0.2V.
VDD1 1. Confirm that the voltage between test point VDD1 and GND is 1.8V ± 0.1V.
- 1. BBIC Confirmation (Execute the command "getchk").
2. Confirm the returned checksum value.
Connection of checksum value and program number is shown below.
- 1. EEPROM Confirmation (Execute the command "ChkTG9120PFXrevYY.bat").
YY: revision number
2. Confirm the returned checksum value.
3. The checksum is displayed in the last output line.
Note:
"YY" and "checksum" vary depending on the country version. You can find them
in the batch file, PQZZ- mentioned in JIG and PC (P.58).
CLK 1. Input Command "rdeeprom 00 01 01", then you can confirm the current value.
2. Adjust the frequency of CLK executing the command "setfreq xx (where xx is
the value)" so that the reading of the frequency counter is 10.368000MHz ±
10Hz.
Procedure
41
KX-TG9120FXS/KX-TGA910FXS
Check or
Replace Parts
IC1, C31, C32,
R38, R39, C36,
C37
Q9, C70, C71
Q8, R72, D12,
C68
IC7, R37, C62,
C63, X1, C72,
R75~R81, R62,
R63
IC5, C51, R62,
R63, Q14, C50,
R57~R61
IC10, C111,
C112, X1, R73,
C62, C63