Panasonic UF-5500, Service Manual

Page: 170 / 365

170
UF-5500 / 4500
4. No tone dialing
CROSS REFERENCE:
Check Sheet (P.168)
11.2.10.3. Detective TAM Interface Section
1. The FAX turns on, but does not arrive through TAM.
CROSS REFERENCE:
TAM Interface Circuit (P.36)
2. A FAX is received, but won't switch from TAM to FAX.
CROSS REFERENCE:
Analog Section (P.168)
TAM Interface Circuit (P.36)
Following the NCU section and ITS section,
search for the point where the signal disappears
on the route the telephone jack and check
the components at that point.
(DTMF for TEL LINE: Refer to CHECK SHEET.)
Is the TAM installed bell ring
number less than this unit? Install a TAM bell ring number
less than this unit.
Check the CNG signal detection circuit.
(Refer to TAM INTERFACE SECTION.)
YES
NO
Printing?
Is the FAX from the other
party CNG?
Check the path to the modem input and refer to
TAM INTERFACE SECTION, or see
ANALOG SECTION.
No problem.
NO
CNG
YES