Panasonic KX-FP342BX Service Manual page 107

4. No tone dialing
CROSS REFERENCE:
CHECK SHEET (P.105)
6.6.8.3. DETECTIVE TAM INTERFACE SECTION
1. The FAX turns on, but does not arrive through TAM.
CROSS REFERENCE:
CIRCUIT OPERATION (P.153)
2. A FAX is received, but won´t switch from TAM to FAX.
CROSS REFERENCE:
ANALOG BOARD SECTION (P.105)
TAM INTERFACE SECTION (P.152)
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KX-FP342BX