Maintenance - Sharp MX-C250 Service Manual

'13/Oct
2
MX-C250

[9] MAINTENANCE

1. Necessary work for maintenance
A. Counter reset
When the drum cartridge, the primary transfer unit, the secondary
transfer unit, or the fusing unit is replaced with a new one, the initial
detection function operates after turning ON the power to reset
each counter automatically.
When the machine is initialized during warming up, or when the
simulation is executed or the machine is turned OFF and the door
is opened before the machine enters the print (copy) ready state,
the initial detection function may not operate normally. Therefore,
never execute the simulation or never operate the machine such as
turning OFF the machine power and opening the door before the
machine enters the print (copy) ready state after replacing one of
the above parts and turning ON the power.
When the counter is not automatically reset, it must be reset manu-
ally.
Since the maintenance counter (total) and the maintenance coun-
ter (color) are not automatically reset, they must be cleared by exe-
cuting SIM24-4.
(For details, refer to the page of "2. Maintenance timing display.")
B. Toner density initial setting
When the developer cartridge is replaced, the initial setting of the
toner density needs to be executed by SIM25-2.
If another simulation is executed or the machine power is turned
OFF during execution of this simulation, the initial setting of the
toner density cannot be executed normally. Therefore, never oper-
ate the machine until the initial setting of the toner density is com-
pleted (the machine enters the print (copy) ready state).
Service Manual
C. Auto color calibration (auto color balance
adjustment) according to the guidance
This function is valid only when the setting of SIM26-55 is Enable.
(To enable this function, set the other items than the fusing unit to
Enable in the menu of SIM26-53/54.)
When one of the developer cartridge, the drum cartridge, the pri-
mary transfer unit, and the secondary transfer unit is replaced with
a new one, the guidance for execution of the auto color calibration
is displayed on the LCD. Follow the guidance to execute the auto
color calibration.
When a sub part is used to execute the maintenance of the primary
transfer unit, the guidance is not displayed. In this case, use
SIM46-24 to execute the auto color calibration.
When the fusing unit is replaced, this guidance is not displayed.
D. Other
Perform the following items.
- Image skew adjustment (LSU unit) (SIM61-04)
- Image registration adjustment (SIM50-22)
- Image density sensor (Image registration sensor) adjustment
(SIM44-13)
- CIS gamma adjustment (CIS calibration) (SIM63-03) (Execute
according to the necessity.)
- Firmware version check (SIM22-05) (Execute according to the
necessity.)
- Trouble counter and JAM counter reset (SIM24-01)
- Copy/printer color balance adjustment (SIM46-24) (When the
auto color calibration (auto color balance adjustment) is not exe-
cuted according to the guidance)
MX-C250 MAINTENANCE 9 – 1