Panasonic KX-TG9385BXT, Руководство по обслуживанию

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KX-TG9385BXT/KX-TGA939BXT
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.
The connections of simulator equipments are as shown in
Adjustment Standard (Base Unit) (P.53).
Items Check
Point
Procedure Check or
Replace Parts
( A ) 5.0 V Supply Confirma-
tion
IC311
C316 (+)
1. Confirm that the voltage between 4 pin of IC311 and GND is 5.0 V ± 0.2 V. IC311, D301,
F301, C315,
C313, C314,
R311, R312,
R316, C316,
C317
( B ) 3.3 V Supply Confirma-
tion
TP3.3 V 1. Confirm that the voltage between test point TP3.3 V and GND is 3.3 V ± 0.2 V. IC326, C326,
C327, R328,
R326, R327
( C ) 2.5 V Supply Confirma-
tion
TP2.5 V 1. Confirm that the voltage between test point TP2.5 V and GND is 2.5 V ± 0.2 V. IC321, C321,
R322, R321,
C322
( D ) 3.0 V Supply Confirma-
tion
TP3.0 V 1. Confirm that the voltage between test point TP3.0 V and GND is 3 V ± 0.2 V. Q381, R381,
R382, R383,
C382, D500
( E ) 1.8 V Supply Confirma-
tion
TP1.8 V 1. Confirm that the voltage between test point TP1.8 V and GND is 1.8 V ± 0.1 V. Q386, R386,
C387, C388
( F )* 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.
IC501, X501,
R511, C511,
C512, Around
IC561
( G )* EEPROM Confirmation - 1. EEPROM Confirmation (Execute the command "sendchar SLF").
2. Confirm the returned value.
(Value for reference is written at "EEPROM C/SUM" in software_Version_Table.xls.)
IC551, R552,
R553, R554,
C551
( H )* BBIC Clock Adjustment TP-RFCLK 1. Check X’tal Frequency. (10.368 MHz ± 100 Hz).
Input Command "sendchar SFR", 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 “sendchar SFR xx (where xx is the value)” so that the
reading of the frequency counter is 10.368000 MHz ± 20 Hz.
IC501, X501,
C511, C512
Around IC561
( I )* Check line DC charac-
teristics.
- 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. Press LINE1 key.
4. Confirm that the line current is 40 mA ± 5 mA.
5. Press SP-PHONE key.
6. Confirm that the line current is less than + 0.8 mA.
7. Check Line2 as same as Line1.
<Line 1>
PO101, L101,
L102, D101,
Q101, R102,
PC102, Q102,
Q131, R124,
R125
<Line 2>
PO201, L201,
L202, D201,
Q201, D202,
PC202, R224,
R225
( J ) DTMF Generator Check - 1. Connect CN101 (Line 1)/CN201 (Line 2) (Telephone Socket) to DTMF tester.
(Road=600
Ω
)
2. Link Handset and push dial key.
3. Confirm DTMF character.
4. Confirm that the high Group is -8 dBm ± 3 dBm.
5. Confirm that the low Group is -10 dBm ± 3 dBm.
<Line 1>
IC501, R141,
R142, C128,
Q131
<Line 2>
IC501, C246,
T246, R228,
C228, Q231