Panasonic KX-TG8200BXB, Service Manual, Page: 47 / 93

47
KX-TG8200BXB/KX-TGA820BXB
( H )* Battery Monitor Check - 1. Apply 2.25 V between BATT and GND.
2. Execute the command “readbatt”.
It assumes that the return value is XX.
a) 1E XX 2C: No need to adjust
b) XX: 18 ~ 1D: Need to adjust
XX: 2D ~ 32: Need to adjust
Write AD value of 2.25V to EEPROM.
ex) read data: XX = 1D, write data: YY = 1D
read data: XX = 2D, write data: YY = 2D
EEPROM = 0004(Low Voltage) write “YY”
Execute the command “wreeprom 00 04 01 YY”.
EEPROM = 0005(No Voltage) write “YY - 1D”
Execute the command “wreeprom 00 05 01 ZZ”.
EEPROM = 000A(Low Voltage BL) write “YY - 16”
Execute the command “wreeprom 00 0A 01 WW”.
Note:
ZZ = YY - 1D, WW = YY - 16
No Voltage writing data limit is ‘00’.
c) XX: 00 ~ 17: Reject
XX: 33 ~ FF: Reject
IC1, F1, C1
C3, R12
( I ) Battery Low Confirma-
tion
- 1. Apply 2.40 V between B) and BATTERY(-).
2. Confirm that there is no flashing of Battery Icon.
3. Apply 2.25 V ± 0.08 V between B) and BATTERY(-).
4. Confirm that there is flashing of Battery Icon. IC1, F1, C1
C3, R12
( J )* BBIC Clock Adjustment CLK 1. Apply 2.6 V between B) and BATTERY(-) with DC power.
2. Execute the command “conttx”.
3. Check X’tal Frequency. (10.368 MHz ± 100 Hz)
Input Command “rdeeprom 00 01 01”, then you can confirm the current value.
4. If the frequency is not 10.368 MHz ± 100Hz, 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 ± 10 Hz.
Note:
CLK is displayed only for a few seconds when executing the command “conttx”
after battery is inserted.
IC1, X1, C6,
C7, IC4, C57
( K )* Transmitted Power Con-
firmation
- Remove the Antenna before starting step from 1 to 4.
1. Configure the DECT tester (CMD60) as follows;
<Setting>
• Test mode: PP
• RFPI: 0102030405
• Traffic Carrier: 5
• Traffic Slot: 4
• Mode: Loopback
• RF LEVEL = -70 dBm
• PACKET: PP32Z
2. Execute the command “regcmd60 01 02 03 04 05".
3. Initiate connection from DECT tester.
4. Confirm that the NTP value at ANT is 20 dBm ~ 25 dBm.
IC1, IC4, C58,
C57, C50,
C52, C53,
R52, C60, C61
( L )* Modulation Check and
Adjustment
- Follow steps 1 to 3 of (K) .
4.Confirm that the B-Field Modulation is +220 ~ +403/-220 ~ -403 kHz/div & Mod-
ulated width 670 kHz using data type Fig 31.
5.Adjust the B-Field Modulation if required. (Execute the command “Readmod”
and “wrtmod xx”, where xx is the value.)
IC1, IC4, C58,
C57, C52,
C53, R52,
C61, C59,
C125, C62
( M )* Frequency Offset Confir-
mation
- Follow steps 1 to 3 of (K) .
4.Confirm that the frequency Offset is < ± 50 kHz.
IC1, IC4, C58,
C57, C52,
C53, R52,
C61, C59,
C125, C62
( N )* Frequency Drift Confir-
mation
- Follow steps 1 to 3 of (K) .
4.Confirm that the frequency Drift is < ± 30 kHz/ms.
IC1, IC4, C58,
C57, C52,
C53, R52,
C61, C59,
C125, C62
( O )* Sensitivity Receiver
Confirmation
- Follow steps 1 to 3 of (K) .
4.Set DECT tester power to -88 dBm.
5.Confirm that the BER is < 1000 ppm.
IC1, IC4, C58,
C57, C52,
C53, R52,
C61, C59,
C125, C62
Items Check
Point
Procedure Check or
Replace Parts