Panasonic KX-TGF340B - Page 49

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Cross Reference:
Schematic Diagram (Base Unit_RF) (P.80)
Note:
(*2) After replacing, need to adjust the frequency of BT.
Refer to Things to Do after Replacing IC or X'tal (P.65)
Check the circuit of around
POWER and RESET parts
of BT Module.
Check the circuit of around
UART communication (*1) of
main board and BT module.
AC power on
PIO01
㻍
1.5s
㻍
1.95s
㻍0.05s
㻍㪋㪅㪇s
Case1: OK
Case2: NG1(fail to reset BT_IC)
AC power on
PIO01
㻍
1.5s
If BT_IC does not work, 1st and 2nd signals does not
appear.
Case3: NG2 (fail to receive of UART signals)
AC power on
PIO01
㻍
1.5s
If BT_IC fails to receive of UART, 2nd signal does not turn
to HIGH.
Case4: NG3 (fail to transmit of UART signals)
AC power on
㻍
1.5s
If BT_IC fails to transmit of UART, 2nd signal does not turn
to LOW.
PIO01
Replace BT module (*2)
still NG
...