Auto Dial Failure - Oki OKIFAX4550 Maintenance Manual

7.6

Auto Dial Failure

Manual dial OK?
Test other fax machines
under the same
conditions. Do they
dial automatically?
DIALING on LCD?
TELEPHONE BUSY
on LCD?
Hang up external
telephone set
Yes
Solved?
Replace NCU Board.
Yes
Solved?
Replace MCNT Board.
Return to section 7.1
41309401TH Rev.4
Start
No
Yes
(Note 1)
No (Others cannot dial
automatically either)
Yes
Yes
No
No
Yes
No
Yes
No
Can you hear dial tone when
lifting up your handset?
Yes
1. Check the line cable.
2. Check the exchange.
Check pulse dial/tone dial, dial rate, etc.
Check closed network.
Each location causes
the problem?
Yes
Check the following items:
* Off-hook bypass OFF (TF No. 19)
* MF/DP (Dial parameter)
* DP rate (Dial parameter)
* DP make ratio (Dial parameter)
* Dial type (Dial parameter)
* Other dial parameters
Note: TF=Technical function
Solved?
No
Check the following items:
* Programmed one-touch keys
* Programmed two-digit auto dial
code
Note 1: If you do not have any other fax machine
for testing, follow this route. Then, if the
problem is unsolved, return to the main route.
2: NCU Board is shown as EN9 for UK, France
and EC countries, INU for US, Canada, Australlia,
New Zealand, Singapore, China, Malaysia and
non-EC countries (Poland etc.)
No
No (Only specific
locations)
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