Oki B4100 - Manual (Page 247)

40055101TH Rev.4 247 /
Do they receive normally?
Test other fax machine under the same
conditions, especially concerning step 1-4.
A
No
Yes
The hardware of the troubled fax machine
may be damaged.
Go to 7.1.13 (High-speed Modem Test)
to localize the cause.
Check the line and the network.
Note: Even if the high-speed modem test
results in success, 300 bps signal route
remains unchecked. In that case, the
most suspected unit is MCNT board.