Check The Rf Unit - Panasonic KX-TC1709LBB Service Manual

KX-TC1709LBB
8.4.

Check the RF Unit

8.4.1. 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.
8.4.2. Check Items
8.4.2.1. 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
seconds after Power supply the portable unit. Refer to fixation
CH table, figure 1 for the
is at very large distance from the base unit and the TX signal
from handset to base is very small.
Procedure: First place handset jig on base under test to
charge (exchange security code); press CLEAR and then TALK
to operate. The LCD will show TALK. This means that the base
unit sensitivity is OK.
* HS JIG becomes [NORMAL POWER] mode immediately after
the power supply turning on.
NOTES:
1) If when setting the handset to TEST LOW mode, if
handset beeps 3 times and the LCD shows "No link to base.
Place on cradle and try again", press 2, 5, 8, 0
simultaneously and then disconnect battery. Re-install
battery, place unit on cradle to get security codes and tries
again.
2) Only KX-TC1703 with marks HS JIG/BS JIG can be used
for troubleshooting. However, regular production set also
can be used as a JIG.
Fixation CH
CH
1CH
3CH
5CH
7CH
9CH
11CH
13CH
15CH
17CH
19CH
21CH
and key at the same time within 5
key. This test simulates the handset
Figure 1
POWER making key
"Lo" "FLASH" + "1"
"Lo" "FLASH" + "2"
"Lo" "FLASH" + "3"
"Lo" "FLASH" + "4"
"Lo" "FLASH" + "5"
"Lo" "FLASH" + "6"
"Lo" "FLASH" + "7"
"Lo" "FLASH" + "8"
"Lo" "FLASH" + "9"
"Lo" "FLASH" + " "
"Lo" "FLASH" + "0"
Fig. Using TC1703 Handset-jig.
* KX-TC1703 is used as the jig.
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