Overall Troubleshooting Flow Chart - Oki B 4100 Maintenance Manual

7.1.1

Overall Troubleshooting Flow Chart

Start
LCD works?
Yes
ALARM LED lights?
No
Key operation activates
the OKIFAX 4100/
OKIOFFICE44
(Pressing SELECT FUNCTION key causes
"SELECT FUCTION (OT) MEMORY AVALI=100%" to appear on LCD?
Pressing STOP key makes a key touch-tone?)
Yes
Perform SELF-DIAGNOSIS.
Print test OK?
Yes
FLASH memory check OK?
Yes
RAM check OK?
Yes
Local copy OK?
Yes
Auto dial OK?
Yes
Transmission problem?
No
Auto reception OK?
Yes
Reception problem?
No
Verify symptom.
40055101TH Rev.4
No
Go to 7.1.2 (No LCD operation).
Yes
Go to 7.1.3 (ALARM LED on).
No
Replace MCNT and/or OPE (O4W) unit.
Note*:
No
Go to 7.1.4 (Printing test failure).
No
Replace FLASH memory(s) on MCNT
board
Replace RAM(s)
No
(RAM1-2 on MEM board, RAM1-2 on
MCNT board)
No
Go to 7.1.5 (No local copy).
No
Go to 7.1.6 (Auto dial failure).
Yes
Go to 7.1.7 (Transmission problem).
No
Go to 7.1.8 (Auto reception failure).
Yes
Go to 7.1.9 (Reception problem).
Note:
OPT-RAM "OK" or "NG" is
printed when the MEMORY board
(Option) is inserted on the MCNT
board.
R44 board for OKIFAX 4100/
OKIOFFICE44 shown as MCNT.
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