Panasonic KX-TGA740, Service Manual

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52
KX-TG7411MEB/KX-TG7412MEB/KX-TGA740MEB
10.1.4.3. Check Table for RF part
Note:
(*1)(*4) Adjustment and Test Mode Flow Chart (P.38)
(*2)(*3) RF-DSP Interface Signal Wave Form (P.54)
(*5) Handset Reference Drawing (P.64)
(*6) Base Unit Reference Drawing (P.63)
(*7) Things to Do after Replacing IC or X’tal (P.62)
No. Item BU (Base Unit) Check HS (Handset) Check
1 Link Confirmation Normal
HS, BU Mode [Normal Mode]
1. Register Regular HS to BU (to be
checked).
2. Press [Talk] key of the Regular HS to
establish link.
1. Register HS (to be checked) to Regular
BU.
2. Press [Talk] key of the HS to establish link.
2 Control signal confirmation
HS, BU Mode: [Normal Mode] (*1)
Check DSP interface. (*2) Check DSP interface. (*3)
Check signal at power-on.
3
X
'
tal Frequency confirmation (*7)
HS, BU Mode: [Adjustment] (*4)
Check X
'
tal Frequency.
(13.824000 MHz ±100 Hz)
Check X
'
tal Frequency.
(13.824000 MHz ±100 Hz)
4 TX confirmation
Regular HS (BU) Mode:
[Test RX Mode]
BU (HS) Mode:
[Test TX_Burst Mode]
1. Place Regular HS 15 cm away from a
checked BU.
2. Confirm "TXDATA" waveform of BU (*6)
and “RXDATA“ waveform of Regular HS by
Digital Oscilloscope.
1. Place Regular BU 15 cm away from a
checked HS.
2. Confirm "TXDATA" waveform of HS (*5)
and "RXDATA" waveform of Regular BU by
Digital Oscilloscope.
5 RX confirmation
Regular HS (BU) Mode:
[Test TX_Burst Mode]
BU (HS) Mode:
[Test RX Mode]
1. Place Regular HS 15 cm away from a
checked BU.
2. Confirm "RXDATA" waveform of BU (*6)
and “TXDATA“ waveform of Regular HS by
Digital Oscilloscope.
1. Place Regular BU 15 cm away from a
checked HS.
2. Confirm "RXDATA" waveform of HS (*5)
and "TXDATA" waveform of Regular BU by
Digital Oscilloscope.
6 Range Confirmation Normal
HS, BU Mode: [Normal Mode]
1. Register Regular HS to BU (to be
checked).
2. Press [Talk] key of the Regular HS to
establish link.
3. Compare the range of the BU (being
checked) with that of the Regular BU.
1. Register HS (to be checked) to Regular
BU.
2. Press [Talk] key of the HS to establish link.
3. Compare the range of the HS (being
checked) with that of the Regular HS.