Oki ML490 Maintenance Manual - Page 100

Table 6.3 2/2

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42114101 Rev.1 Table 6.3 (2/2) ALARM CATEGORY ALARM Spacing alarm SPACING ALARM Print Head homing alarm Print Head A/D alarm ALARM 10 PRINT HEAD ALARM Print Head Gap A/D alarm FAN alarm SP Motor A/D alarm LED DISPLAY 12 15 17 20 PROP UTILITY PRESTIGE ORATOR LQ REMARKS Space IPT is not occurred within in specified timing. Print head does not reach to the home position. TROUBLESHOOTING Replace space motor. Replace P.H. cable. Replace Control Board Check the mechanisms if load is too much. Thermister is open, short with 0V or short with +5V. Check the P.H. connection. Replace Print Head. Replace P.H. cable. Replace Control/Power Supply Board Print Head Gap Signal open FAN motor does not rotate Thermister is open, short with 0V or short with +5V. Replace P.H. cable. Replace Space Motor Assy. Replace Control Board Replace Control Board Replace FAN motor Replace P.H. cable. Replace Space Motor Assy. Replace Control Board : LED Blink (200ms ON, 200ms OFF) : LED Lights up 100 /

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42114101
Rev.1
100 /
Table 6.3 (2/2)
ALARM
CATEGORY
ALARM
LED DISPLAY
ALARM
10
12
15
17
20
PROP
UTILITY PRESTIGE ORATOR
LQ
REMARKS
TROUBLESHOOTING
SPACING
ALARM
Spacing alarm
Print Head
homing alarm
Print Head
A/D alarm
Space IPT is not occurred
within in specified timing.
: LED Blink (200ms ON, 200ms OFF)
: LED Lights up
PRINT
HEAD
ALARM
Print Head Gap
A/D alarm
FAN alarm
Replace space motor.
Replace P.H. cable.
Replace Control Board
Check the mechanisms if
load is too much.
Check the P.H. connection.
Replace Print Head.
Replace P.H. cable.
Replace Control/Power
Supply Board
Print head does not reach
to the home position.
Thermister is open, short
with 0V or short with +5V.
Print Head Gap Signal open
Replace P.H. cable.
Replace Space
Motor Assy.
Replace Control Board
FAN motor does not rotate
Replace Control Board
Replace FAN motor
SP Motor A/D alarm
Thermister is open, short
with 0V or short with +5V.
Replace P.H. cable.
Replace Space
Motor Assy.
Replace Control Board