Oki B4100 - Manual (Page 301)

40055101TH Rev.4 301 /
7.2.11 LED Test
Start
Perform LED TEST.
(See Chapter 6.7)
No (No LED lights)
1. Check the connection cable.
2. Check the oscillator OSC (OPE).
3. Replace MCNT board.
4. If not solved, replace CPU of
OPE unit.
Checking Points:
Yes
Yes
No
End
All LEDs light?
Any LED does not light?
ALARM LED lights?
DARK LED lights?
NORMAL LED lights?
LIGHT LED lights?
STD LED lights?
FINE LED lights?
EX. FINE LED lights?
PHOTO LED lights?
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes (One LED or
some LEDs light.)
No
Check the corresponding
LED(s) on OPE board.