Matsushita Electric KX-TCD952NLB, Service Manual

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Tools required for adjustments
- Frequency counter
- Power supply unit (DC 3V~5V, 1A)
- Personal computer
- Serial communication tool
- Test software (batch files)
Item(1)
1. Connect the serial link to test computer to J6 (serial data) and J8
(GND).
2. Turn off power for the base unit.
3. Input a 3.9V supply to the handset J5 (+) and J8 (GND).
4. Connect the frequency counter to TP56 and J8 (GND).
5. Press the “power on” button.
6. Send batch file “FIXFREQ.BAT”.
7. Use batch file “SETFREQ.BAT” to set the clock frequency. The
default value is 80. Increase the value to increase the frequency
and vice-versa. The clock frequency must be 10,368.000 kHz ±
0.02 kHz.
Item(2)
1. Connect the serial link to test computer for J6 (serial data) and J8
(GND).
2. Set the battery voltage to 4.6V at J1 and J2.
3. Press the “power on” button.
4. Send batch file “READBATT.BAT”. The returned hex value is M2.
5. Send batch file “WRTBATT.BAT M2”.
6. Set the battery voltage to 3.5V at J5 (+).
7. Send batch file “READBATT.BAT”. The returned hex value is M1.
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