Modem / Fax Card Service Check - Ricoh M126 Service Manual

6.5.29 MODEM / FAX CARD SERVICE CHECK

Step Questions / actions
Is the phone line properly connected
1 to the modem card and the wall
jack?
Properly connect the phone line to
2 the modem card and wall jack.
Did this fix the problem?
Test the phone line's ability to send
3 and receive calls.
Did the phone line work properly?
Use the machine on a properly
4 functioning phone jack.
Did this fix the problem?
Is the modem card cable properly
5 connected to the system board at J8
and the modem card?
Properly connect the modem card
cable to the modem card and
6
system board.
Did this fix the problem?
Check the modem card cable for
7
continuity. Is there continuity?
Check the voltages from connector
J8 on the controller board. Check
Pin 12 and 13 for +3.3VDC, Pin 10
8
for +5VDC. 2, 4, 6, and 8 are
grounds. Are the signals or voltages
present?
SM
Yes
Go to step 3.
Problem resolved.
Go to step 5.
Problem resolved.
Go to step 7.
Problem resolved.
Go to step 8.
Replace the
modem card.
6-99
Service Checks
No
Go to step 2.
Go to step 3.
Go to step 4.
Go to step 5.
Go to step 6.
Go to step 7.
Replace the
modem card cable.
Replace the
system board.
M126/M127/M128