Check Link - Panasonic KX-TG4021LAT Service Manual

Telephone accessories
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10.1.5. Check Link

10.1.5.1. Base Unit
Cross Reference:
Power Supply Circuit/Reset Circuit (P.12)
Check the RF part (P.37)
Note:
*1 How to adjust +3.0V:
Execute the command "VDA"
Refer to Things to Do after Replacing IC or X'tal (P.54) for Base Unit.
*2 How to adjust the frequency of X501:
To see the frequency, execute the command "SFR", then check the TP_CKM (IC501-57pin).
To adjust frequency, send command "SFR
KX-TG4021LAT/KX-TG4022LAT/KX-TG4023LAT/KX-TGA403LAT
" until the frequency counter becomes13.824 MHZ±55HZ.
35

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Kx-tg4022latKx-tga403latKx-tg4023lat

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