Service manual

LASER EXPOSURE
SM 6-27 G130/G131
Detailed
Descriptions
Adjustment Conditions
Line position adjustment timing depends on several SP mode settings. However,
the mode selection, SP5-993-001, takes precedence over the others. The table
below shows the conditions and the processes you need to do. Note that the
adjustments of the sub-scan line position, main scan line position, and
magnification are done under the same conditions.
The numbers in the mode selection column show the setting of SP 5-993-001. For
details, refer to the description for SP 5-993-001 in the SP table.
Mode
selection
Condition Setting
S-pos./
M-pos./
Magni.
Skew
Job End
SP3-906-001

Interrupt
SP3-906-002

Non-use Time 1, 2
SP3-906-003, 004

Power On Interval
Time
SP3-906-006

1
Process
control
Recovery (fusing
temperature 60°C or
lower)
SP3-125-007
 
Standby
SP5-993-003, 005

Job start
SP5-993-003, 006

Temperature
difference
Interrupt
SP5-993-003, 04, 022

Main scan length detection SP2-919-001 *
Initialization (fusing temperature over
60°C)
SP5-993-026

1 or 2
Replacement of development unit or
PCU
None
 
0, 1, or 2
Forced self check SP5-993-002
 
S-pos. : Sub-scan line position  : Executed
M-pos. : Main scan line position
Magni. : Magnification
* : Executed one time when the
conditions are met twice
NOTE:
1) “Recovery” includes turning on the main switch.
2) Fusing temperature is measured by the thermistor in the fusing unit.
Other temperatures are measured by the sensors on the laser optics-
housing unit.
3) You can use SP5-993-035 to select one of the six frequency levels of
the line position adjustment.