Panasonic KX-TDA0142CE, Service Manual

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1) Send “Read command to non-volatile memory” and read current status.
Command: 122600000204
Response: 0F5601040000XX00 XX:Current value
2) Measure frequency at SYRI test point. (SYRI-GND)
(Refer to PRINTED CIRCUIT BOARD 21.2 Bottom View p46)
If measured frequency is within the range of 10.368 MHz ±20 Hz, proceed to step 5.
3) Read “Clock frequency set - command”, and set calibration data.
Command: 0E060000YY YY:Adjustment value
Response: none
If measured frequency is high, set YY to a value lower than current value (XX). If low, set YY to a
value
higher than current
value (XX).
4) Repeat (2) to (3) until frequency is within test standard.
If measured frequency is within the range of 10.386 MHz ±20 Hz, proceed
to next step.
5) Send “Write command to non-volatile memory” and write calibration
data.
Command: 1216000002040500YY00
Response: 0F5601
6) Send “CS reset command” and reset CS.
Command: 0E0700
Response: none
7) Measure frequency (RF clock) at SYRI again at last.
10. FREQUENCY TABLE (MHz)
Tx Frequency Rx Frequency
Channel Frequency (MHz)
00 1897.344
01 1895.616
02 1893.888
03 1892.160
04 1890.432
05 1888.704
06 1886.976
07 1885.248
08 1883.520
09 1881.792
11. BLOCK DIAGRAM
11.1. MAIN BOARD
11.2. RF BLOCK
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