Panasonic KX-TC1743B, Service Manual

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(*1) Refer to Finding out the Defective Unit ().
Cross Reference:
Check the RF Unit ()
Power Supply Circuit ()
Power Supply Circuit ()
NOTE:
Flash Memory is IC300.
DSP is IC201.
8.9. Check the RF Unit
8.9.1. Finding out the Defective Unit
Prepare HS JIG (Handset-jig) and BS JIG (Base Unit-jig) 2). Place the HS JIG on the cradle of the
base unit for checking, then confirm that they are linked. Place the handset for checking on the
cradle of the BS JIG, then confirm that they are linked. How to confirm the link is as follows;
press the TALK button and confirm that the LEDs of the base unit is turned ON.
8.9.2. Check Items
8.9.2.1. Handset-jig (HS JIG) for Base Unit
The handset unit jig also uses two modes: TEST LOW mode and NORMAL POWER mode.
(1) NORMAL POWER mode (Stand-By). In this mode the LCD will remain blank.
(2) TEST LOW mode. Place the portable unit on the base unit while pushing
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