Panasonic KXTG2226W - 2.4GHZ DIGITAL PHONE, Service Manual

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No Item BS (Base unit) (*1) HS (Handset) (*1)
1a. Link
confirmation
[NORMAL
POWER]
Procedure77
1. Put “HS (working)” on BS.
2. Set MODE to [NORMAL POWER] of “HS
(working)“.
3. Press [TALK] key of “HS (working)” to
establish link.
1. Put HS on “BS (working)”.
2. Set MODE to [NORMAL POWER] of “BS
(working)“.
3. Press [TALK] key of “HS” to establish link.
1b. Link
confirmation
[TEST
POWER]
for
confirmation
the sensitivity
of
RF Block
Procedure
1. Change MODE to [TEST POWER] of “HS
(working)”.
2. Press [TALK] key of “HS (working)” to
establish link.
3. Confirm the suspicious BS links to HS
(working) with approximately the same distance
from BS (working).
1. Change MODE to [TEST POWER] of “BS
(working)”.
2. Press [TALK] key of “HS“ to establish link.
3. Confirm the suspicious HS links to BS
(working) with approximately the same distance
from HS (working).
2 IC801 working
confirmation Procedure
1. Set Test-mode Just entering to test mode.(*3)
2. Confirm oscillate signal of RF UNIT (8.192 MHz
at OSC). (*5)
1. Set Test-mode Just entering to test mode.(
2. Confirm oscillate signal of RF UNIT (8.192
at OSC). (*6)
Check point
1. Check Xtal oscillator at Q260 - C of the base
unit.
2. Check DSP interface(IC801 DSP/BS) (*4).
1. Check Xtal oscillator at Q204 - C of the handset.
2. Check DSP interface(IC801 DSP/
3 TX Power
confirmation Procedure
1. Put RF wire to ANT and ANT_GND (See Base
Unit Reference Drawing ).
Connect this wire to the Spectrum Analyzer.
2. Set Test-mode. (*7)
3. Confirm TX power level 11±5dBm (*2)
1. Put RF wire to ANT and ANT_GND (See
Handset Reference Drawing ).
Connect this wire to the Spectrum Analyzer.
2. Set Test-mode. (*8)
3. Confirm TX power level 11±5dBm
Check point
1. Check L801 ~ L805, D801, D802, R805, R806,
C804, C805, C807, FL801 and soldering.
2. Check Antenna in BS.
1. Check L801 ~ L805, D801, D802, R805, R806,
C804, C805, C807, FL801 and soldering.
2. Check Antenna in HS.
4 Receiver
confirmation Procedure
1. Put “HS (working)” on BS.
2. Set MODE to [NORMAL POWER] of “HS
(working)”.
3. Press [TALK] key of “HS (working)“ to
establish link.
4. Change MODE to [TEST POWER] of “HS
(working)“.
5. Press [TALK] key of “HS (working)” to
establish link. Confirm the suspicious BS links to
HS (working) with approximately the same
distance from BS (working).
1. Put HS on “BS (working)”.
2. Set MODE to [NORMAL POWER] of “BS
(working)”.
3. Press [TALK] key of “HS” to establish link.
4. Change MODE to [TEST POWER] of “BS
(working)”.
5. Press [TALK] key of “HS” to establish link.
Confirm the suspicious HS links to BS (working)
with approximately the same distance from
(working).
Check point
1. Check C115, C114, L111, C118 soldering.
2. Check Antenna in BS.
1. Check C115, C114, L111, C118 soldering.
2. Check Antenna in HS.
(1*) BS : Base unit which is checked.
HS : Handset unit which is checked.
BS (working) : Base unit which is working.
HS (working) : Handset unit which is working.
(*2)<Spectrum analyzer setting>
SPAN: 10MHz
VBW, RBW: 1MHz
SWEEP: 1sec.
(*3)See TEST MODE ( ).
(*4)See RF-DSP interface signal wave form ().
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