Troubleshooting By Symptom (Base Unit And Charger Unit) - Panasonic KX-TG9391T Service Manual

KX-TG9391T/KX-TG9392T/KX-TGA939T
9.2.

Troubleshooting by Symptom (Base Unit and Charger Unit)

9.2.1. Check Point (Base Unit)
Please follow the items below when BBIC, EEPROM or FLASH is replaced.
Note:
After the measuring, suck up the solder of TP.
*: PC Setting (P.67) is required beforehand.
The connections of simulator equipments are as shown in Adjustment Standard (Base Unit) (P.69).
Items
(A) 4.0 V Supply Confirma-
tion
(B) 3.6 V Supply Confirma-
tion
(C) 2.5 V Supply Confirma-
tion
(D) 3.0 V Supply Confirma-
tion
(E) 1.8 V Supply Confirma-
tion
(F)* BBIC Confirmation
(G)* EEPROM Confirmation
(H)* BBIC Clock Adjustment
(I)* Hookswitch Check with
DC Characteristics
(J) DTMF Generator Check
Check
Point
TP4V 1. Confirm that the voltage between test point TP4V and GND is 4.0 V ± 0.2 V.
TP3.6 V 1. Confirm that the voltage between test point TP3.6 V and GND is 3.3 V ± 0.2 V.
TP2.5 V 1. Confirm that the voltage between test point TP2.5 V and GND is 2.5 V ± 0.2 V.
TP3.0 V 1. Confirm that the voltage between test point TP3.0 V and GND is 3 V ± 0.2 V.
TP1.8 V 1. Confirm that the voltage between test point TP1.8 V and GND is 1.8 V ± 0.1 V.
- 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 "ChkTG9391XXrevYY.bat").
XX: country code
YY: revision number
2. Confirm the returned checksum value.
3. The checksum is displayed in the last output line.
Note:
"XX" "YY" and "checksum" vary depending on the country version. You can find
them in the batch file, PNZZ- mentioned in JIG and PC (P.67).
CLK 1. Check X'tal Frequency. (10.368 MHz ± 100 Hz).
Input Command "rdeeprom 00 01 01", then you can confirm the current value.
2. If the frequency is not 10.368 MHz ± 100 Hz, Adjust the frequency of CLK exe-
cuting the command "setfreq xx (where xx is the value)" so that the reading of
the frequency counter is 10.368000 MHz ± 20 Hz.
- 1. Connect CN101 (Line 1)/CN201 (Line 2) (Telephone Socket) to Tel-simulator
which is connected with 600 Ω.
2. Set line voltage to 48 V and line current to 40 mA at off-hook condition of nor-
mal telephone.
3. Execute the command "hookoff"
4. Confirm that the line current is 40 mA ± 5 mA.
5. Execute the command "hookon".
6. Confirm that the line current is less than + 0.8 mA.
- 1. Connect CN101 (Line 1)/CN201 (Line 2) (Telephone Socket) to DTMF tester.
(Road=600 Ω)
2. Link Portable and push dial key.
3. Confirm DTMF character.
4. Confirm that the high Group is -6 dBm ± 2 dBm.
5. Confirm that the low Group is -8 dBm ± 2 dBm.
Procedure
52
Check or
Replace Parts
IC311, Q311,
R311, R312,
R313, D311,
L311, C315
IC326, C326,
C327
IC321, C321,
R322, R321
Q381, R381,
R382, R383,
C382
Q386, R386,
C388
IC501, X501,
R511, C511,
C512, IC561,
Q502
IC551, R552,
R553, R554,
C551
IC501, X501,
R511, C511,
C512
<Line 1>
PO101, L101,
L102, RL185,
D101, Q101,
R102, PC102,
Q102, D105,
Q191, Q131,
R124, R125,
D125, C126
<Line 2>
PO201, L201,
L202, D201,
Q201, D202,
PC202, D231,
R224, R225,
D225, C226
<Line 1>
IC501, R141,
R142, C128,
Q131, R136,
R134, R133
<Line 2>
IC501, C246,
T246, R228,
C228, Q231,
R236, R232,
R234, R233