Panasonic KX-TD7895 - Digital Spread Spedtrum Telephone, Service Manual

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and GND).
4. Connect a distortion meter (with AC voltmeter) to the SPK
terminals (SP+) on the handset.
5. To Enter the Test Mode
(1) Connect serial cable to main board. (TX, RX, GND, 3points)
(2) Connect other side of serial cable to serial port of PC. (Dsub-9pins connector)
(3) Start up the “Procomm plus“ and use the script file. [file name : TD7895.WAX]
(4) Please use Following Commands.
- Test Start Request Commands.
- I/O Setting Request Commands.
Codec
Setting : Loop Back
: Transmit ON
: Receiving OFF
5.3. ADJUSTMENT PROCEDURE
Symptom Remedy
Speaker level of handset is low. Adjust adjustment item (A), (B).
Transmission sound is low. Adjust adjustment item (A), (B).