KX-TCD961GB - Panasonic Telephone Service Manual (repair manual). Page 43

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KX-TCD961GB
CHECK PROCEDURE (BASE UNIT)
TEST EQUIPMENT REQUIRED AND EQUIPMENT SETUP
(a) CMD60
(b) “Bell” Oscillator: FREQUENCY: 25Hz
(c) Power Supply (12V 1A)
(d) DMM
(e) Ammeter
(f) Frequency Counter
(g) Oscilloscope
(h) Computer (PC): Set the computer to the MS-DOS mode. Type: SET_COM1.
(i) Test software (Batch Files)
Connect an 10V supply to the board J2 pin 1 (+), pin 2 (–), (or connect an AC Adaptor).
Connect the computer serial link to the Test Fixture J102 (+), J103 (–).
INITIAL POWER + BBIC TESTS
1. Turn on the 10V supply.
2. Check for approx. 70 mA current on the 10V supply.
3. Check the 4V supply voltage (TP91). It must be 3.88 ± 0.2V.
4. Check the 3.3V supply voltage (TP95). It must be 3.0 ± 0.2V.
5. Connect SCLK (TP148) to CH.1 on the scope.
6. Check if the clock waveform is 5,184,000 Hz ±7 Hz.
7. Send batch file “SELF TEST”.
SET THE CLOCK FREQUENCY
1. Send batch file “FIX FREQ”.
2. Check for approx. 90 mA current on the 10V supply.
3. Transfer SCLK (TP148) to the frequency counter.
4. Send batch file “SETFREQ nn” to set the clock frequency. The default value of nn is 80. Increase the value to
    increase the frequency and vice-versa. The clock frequency must be 5,184,000 Hz ±7 Hz.
TEST MODE:
CONFIG MENU
MANUAL TEST
MODULE TEST
MODULE TEST
FP
SIGN
TRAFFIC SLOT:
TRAFFIC CARRIER:
RF LEVEL:
TRIGGER:
EXP. POWER:
RF GENERATOR
SCRAMBLE:
4
5
– 55 dBm
RISING SLOPE
30 dBm
FREQ:
DEVIATION:
SIGNAL:
RF LEVEL:
OFF
1888.704 MHz
288 kHz
01010101
– 65 dBm
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