Panasonic KX-TC1743B, Service Manual

Page: 37 / 96

No Item BS (Base uinit) (*1) HS (Handset) (*1)
1a. Link
confirmation
[NORMAL
POWER]
Procedure
1. Put “HS JIG” on BS.
2. Set MODE to [NORMAL POWER] position of
“HS JIG“.
3. Press [TALK] key of “HS JIG” to establish link.
1. Put HS on “BS JIG”.
2. Set MODE to [NORMAL POWER] position
“BS JIG“.
3. Press [TALK] key of “HS” to establish
1b. Link
confirmation
[TEST
POWER]
Procedure
1. Change MODE to [TEST POWER] position of
“HS JIG”.
2. Press [TALK] key of “HS JIG” to establish link
about 30cm away from “BS”.
1. Change MODE to [TEST POWER]
“BS JIG”.
2. Press [TALK] key of “HS“ to establish
about 30cm away from “BS JIG”.
2 IC101 working
confirmation Procedure
1. Set Test-mode [Continuos Send Low Power].(*3)
2. Confirm oscillate signal (4.096 MHz at Pin 33). (*
4)
1. Set Test-mode [Continuos Send Low
3)
2. Confirm oscillate signal (4.096 MHz
(*4).
Check point
1. Check Pin 33 oscillator.
2. Check DSP interface(IC101 DSP/BS) (*5).
1. Check Pin 33 oscillator.
2. Check DSP interface(IC101
3
TX frequency
confirmation Procedure
1. Set Test-model [Continuos Send].(*3)
2. Confirm TX-carrier frequency (1CH =
902.713MHz ± 20kHz).
1. Set Test-mode [Continuos Send Low
3)
2. Confirm TX-carrier frequency (1CH
902.713MHz ± 20kHz).
Check point
1. Check DSP or X200 oscillator Circuit. 1. Check DSP or X201 oscillator Circuit.
4 TX Power
confirmation Procedure
1. Put RF wire to ANT and ANT_GND (See Base
Unit Reference Drawing ).
Connect this wire Marconi or Spectrum Analyzer.
2. Set Test-mode.
3. Confirm TX power level within -3±5dBm (*2)
(0.158~1.58mW)
1. Put RF wire to ANT and ANT_GND
Handset Reference Drawing ).
2. Set Test-mode.
3. Confirm TX power level within -3±
(0.158~1.58mW)
Check point
1. Check C102~C103, C161, L102, L111, R147
soldering.
2. Check Antenna in BS.
1. Check C102~C103, C161, L102, L111,
soldering.
2. Check Antenna in HS.
5 Receiver
confirmation Procedure
1. Put “HS JIG” on BS.
2. Set MODE to [NORMAL POWER] position of
“HS JIG”.
3. Press [TALK] key of “HS JIG“ to establish link.
4. Change MODE to [TEST POWER] position of
“HS JIG“.
5. Press [TALK] key of “HS JIG” to establish link
about 30cm away from “BS”.
1. Put HS on “BS JIG”.
2. Set MODE to [NORMAL POWER] position
“BS JIG”.
3. Press [TALK] key of “HS” to establish
4. Change MODE to [TEST POWER]
“BS JIG”.
5. Press [TALK] key of “HS” to establish
about 30cm away from “BS JIG“.
Check point
1. Check L103, L104, L106, L111~L113, X101,
C103~C106, C110, C118, R103 soldering.
2. Check Antenna in BS.
1. Check L103, L104, L106, L111~L113,
C103~C106, C110, C118, R103 soldering.
2. Check Antenna in HS.
(*1) BS: Base unit, HS: Handset unit, HS JIG: Handset-jig, BS JIG: Base unit-jig
(*2)<Marconi setting>
TX Freq.; 902.713MHz mode; WB
<Spectrum analyzer setting>
Freq. 902.713MHz Span 10MHz
RBW 1MHz or above VBW same as RBW
(*3)See TEST MODE ( ).
(*4)See RF-DSP interface signal wave form ().
(*5)See Base Unit Reference Drawing ().
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