Panasonic KX-FT937LA-B Service Manual page 79

12.3.3. Communication Section
Find the problem in the table shown below, and refer to the corresponding troubleshooting procedure in Defective Facsimile Sec-
tion (P.80).
No.
1 The paper is not fed properly when faxing.
(Nor in the copy mode.)
2 The fax usually transmits successfully but sometimes fails.
(The unit can copy documents.)
3 The fax usually receives successfully but sometimes fails.
(The unit can copy documents.)
4 The fax completely fails to transmit or receive.
(The unit can copy documents.)
5 The fax fails either to transmit or receive when making a
long distance or an international call.
(The unit can copy documents.)
6 The fax image is poor when transmitting or receiving during
a long distance or an international call.
7 No.1-No.5
Symptom Content
Troubleshooting
Troubleshooting
Troubleshooting
Troubleshooting
Detailed description of the possible
causes (Similar to troubleshooting
items No.2 and No.3.)
The troubleshooting procedure for
each error code will be printed on the
communication result report.
79
KX-FT937LA-B
Possible cause
Problem with the feeding mechanism.
Problem with the service line or with
the receiver's fax.
Problem with the service line or with
the transmitter's fax.
Problem with the electric circuit.
Problem with the service line.