![background image](http://html1.mh-extra.com/html/okidata/ol1200ex/ol1200ex_service-manual_3678465143.webp)
%2. Dark background density
2
Dark background density
Has the image drum been exposed to external light?
Yes Mount the image drum in the printer and wait for about 30 minutes.
t
No
Is the heat roller of the fusing unit dirty?
Yes Clean the heat roller.
t
No
Is the contact of the cleaning roller of the image drum cartridge contacted with e
contact assembly properly? (See Figure 6-5 C .)
No
Adjust the contact of the cleaning roller to contact the contact assembly properly.
t
Yes
Replace the image drum cartridge.
Has the trouble been removed?
Yes
End
Note:
After replacing the image drum cartridge, set the printer in the user
maintenance mode by turning the power on while pressing the MENU
key, and reset the drum counter. (Refer to User's Manual.)
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No
Replace the control board Power/Sensor board.
3
Black paper is output.
Is the LED head connected properly? (Check connector HEAD1 (14P), HEAD2 (12p) on the
control board and PC connector on the LED head.)
No
Connect the LED head properly or replace the head cable.
t
Yes
Is the contact of the image drum cartridge contacted with the ground contact properly.
(See Figure 6-5 D .)
No
Check the ground contact of the image drum cartridge.
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Yes
Check the connectors HEAD1 (14P) and HEAD2 (12P)
No
Replace the LED head.
Yes
Replace the connector
Has the trouble been removed.
Yes
End
Note:
After replacing the LED head, set the printer in the engine maintenance
mode by turning the power on while pressing the FORM FEED and
ENTER keys. Set the LED head drive time. (Refer to Section 4.2.)
t
Summary of Contents for OL1200ex
Page 8: ......
Page 16: ......
Page 18: ......
Page 39: ...3 2 Parts Layout 1 4 3 2 Parts Layout 1 4...
Page 40: ...Parts Layout 2 4 Parts Layout 2 4...
Page 41: ...Parts Layout 3 4 Parts Layout 3 4...
Page 42: ...Parts Layout 4 4 Parts Layout 4 4...
Page 57: ......
Page 62: ......
Page 77: ......
Page 79: ......
Page 87: ...User maintenance mode menu system User maintenance mode menu system...
Page 89: ......
Page 90: ...System maintenance mode menu system System maintenance mode menu system...
Page 93: ...Engine maintenance mode menu system Engine maintenance mode menu system...
Page 94: ......
Page 120: ......
Page 125: ...Fig 6 2 Measurement by a Multimeter Fig 6 3 Connector and Pin Location...
Page 139: ......
Page 144: ...No Replace the control board or Power Sensor board...
Page 150: ......
Page 151: ......
Page 152: ...Chapter 7 7 Wiring Diagram 7 WIRING DIAGRAM 7 1 Interconnect Signal Diagram...
Page 153: ...7 2 PCB Layout 7 2 PCB Layout 1 Control board AOLM...
Page 154: ......
Page 155: ...7 3 Resistance Check 7 3 Resistance Check...
Page 159: ...21 AOLM PCB 4YA4046 163 4G11 1 2 5 10 55077311...
Page 173: ...1 2 External View and Component Names 1 2 External View and Component Names...
Page 177: ...3 2 Parts Layout 3 2 Parts Layout This section describes the layout of the main components...
Page 190: ...5 Connection Diagram 5 CONNECTION DIAGRAM 5 1 Interconnection Diagram...
Page 191: ...5 2 PCB Layout 5 2 PCB Layout AOLT PCB...
Page 195: ...1 2 External View and Component Names 1 2 External View and Component Names...
Page 199: ...3 2 Parts Layout 3 2 Parts Layout This section describes the layout of the main components...
Page 212: ......
Page 213: ...5 Connection Diagram 5 CONNECTION DIAGRAM 5 1 Interconnection Diagram AOLE PCB...