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7.7. Check the RF Unit
7.7.1. 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.
7.7.2. Check Items
7.7.2.1. 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
and
key at the same time within 5 seconds after Power supply the portable unit. Refer to
fixation CH table, figure 1 for the
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
POWER
1CH
"Lo"
3CH
"Lo"
5CH
"Lo"
7CH
"Lo"
9CH
"Lo"
11CH
"Lo"
13CH
"Lo"
15CH
"Lo"
17CH
"Lo"
19CH
"Lo"
21CH
"Lo"
key. This test simulates the handset is at very large
Figure 1
making key
"FLASH" + "1"
"FLASH" + "2"
"FLASH" + "3"
"FLASH" + "4"
"FLASH" + "5"
"FLASH" + "6"
"FLASH" + "7"
"FLASH" + "8"
"FLASH" + "9"
"FLASH" + "
"
"FLASH" + "0"
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