Panasonic KX-TG2448BXF, Service Manual

Page: 27 / 98

7.4.4. TEST RANGE Check
Circuit block which range is defective can be found by the following check.
Item BU (Base Unit) Check HS (HandSet) Check
Range Confirmation TX
TEST
(TX Power check)
HS, BU Mode:
[Test Link Mode] (*1)
1. Register Regular HS to BU (to be checked).
2. Set BU to “Test Link mode”.
3. Set Regular HS to “Test Link mode”.
*Set TX Power and RX Sensitivity of the BU and the
Regular HS by CHART1.
* At distance of about 20m between HS and BU,
Link OK = TX Power of the BU is OK.
No Link = TX Power of the BU is NG.
1. Register HS (to be checked) to Regular BU.
2. Set Regular BU to “Test Link mode”.
3. Set HS to “Test Link mode”.
*Set TX Power and RX Sensitivity of the HS and the
Regular BU by CHART1.
* At distance of about 20m between HS and BU,
Link OK = TX Power of the HS is OK.
No Link = TX Power of the HS is NG.
Range Confirmation RX
TEST
(RX sensitivity check)
HS, BU Mode:
[Test Link Mode] (*1)
1. Register Regular HS to BU (to be checked).
2. Set BU to “Test Link mode”.
3. Set Regular HS to “Test Link mode”.
*Set TX Power and RX Sensitivity of the BU and
Regular HS by CHART1.
* At distance of about 20m between HS and BU,
Link OK= RX Sensitivity of the BU is OK.
No Link = RX Sensitivity of the BU is NG.
1. Register HS (to be checked) to Regular BU.
2. Set Regular BU to “Test Link mode”.
3. Set HS to “Test Link mode”.
* Set TX Power and RX Sensitivity of Checking_HS
and Regular_BU by CHART1.
* At distance of about 20m between HS and BU,
Link OK= RX Sensitivity of the HS is OK.
No Link = RX Sensitivity of the HS is NG
CHART1: Setting of TX Power and RX Sensitivity in Range Confirmation TX TEST, RX TEST
BU (to be checked) Regular_HS
TX Power RX Sens. TX Power RX Sens.
BU (Base Unit) TX Power Check High High High Low
BU (Base Unit) RX Sensitivity Check High High Low High
HS (to be checked) Regular_BU
TX Power RX Sens. TX Power RX Sens.
HS (Handset) TX Power Check High High High Low
HS (Handset) RX Sensitivity Check High High Low High
Note:
(*1) ADJUSTMENT AND TEST MODE (P.31)
27
KX-TG2448BXF / KX-TG2448B XS / KX-TGA254BXF / KX-TGA254BXS