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
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
Summary of Contents for ML490 Series
Page 1: ...42114101 Rev 1 1 135 ML490 491 PRINTER Maintenance Manual ODA...
Page 2: ...42114101 Rev 1 2...
Page 38: ...42114101 Rev 1 38 Drive gear Ink tank Ribbon cartridge Figure 2 6...
Page 48: ...42114101 Rev 1 48 Change arm Change lever Platen Release cam Figure 2 13 REAR TOP BOTTOM...
Page 96: ...42114101 Rev 1 96 9 Carriage Assy NK2 10 SUS Bearing portion of guide roller EM 30L B...
Page 119: ...42114101 Rev 1 119 6 8 9 7 1 2 3 11 10 4 5 Figure B 2 Printer General Assy...
Page 124: ...42114101 Rev 1 124 9 12 11 1 13 3 7 1 14 5 6 7 2 10 8 Figure B 4 Carriage Assy...
