Oki MC362w Maintenance Manual page 50

Oki Data CONFIDENTIAL
Error checking methods and remedies
The color registration correction test function among the other self-diagnostic functions is
employed to check errors. (Section 5.3.2.6)
Remedies for different errors
• CALIBRATION (L or R), DYNAMICRANGE (L or R)
Check 1: If the above indication appears, check the connected state of the sensor
cable.
If the connected state is found abnormal, restore it to the normal state.
Check 2: Check to see whether the sensor surface is stained with toner, paper
dust or any other foreign matter.
If it is found stained, wipe it clean.
Check 3: Check to see whether the sensor shutter opens and closes normally, by
the MOTOR & CLUTCH TEST of the self-diagnostic function. If the shut-
ter operates imperfectly, replace the shutter unit.
If no problem was found by the checks 1 through 3, there is a problem
with the circuit.
Replace each of the color registration sensor board, the CU/PU board
and the connector cable one by one and check that no error will occur
again.
• BELT REFLX ERR
Check 4: If this indication appears, check the cleaned state for the toner remaining
on the belt surface, in addition to making the above checks 1, 2 and 3.
Take out the belt unit, turn the drive gear located on the left rear side, and
ensure that the belt surface has been cleaned thoroughly.
If cleaning is not achieved perfectly and there still remains toner on the
belt surface after the drive gear has been turned, replace the belt unit.
• (Y or M or C) LEFT, (Y or M or C) RIGHT, (Y or M or C) HORIZONTAL
Check 5: If the above indication appears, check to see whether toner of NG-issuing
color is running short.
Replace a toner cartridge, as needed.
44952001TH Rev.2
2. DESCRIPTION OF OPERATION
2-13