1. Points to be confirmed before maintenance
Before starting maintenance, ask a user and collect
information about troubles occurred on the machine
before the maintenance and the conditions of the machine to grasp key points for the maintenance.
2. Copy sample
Be sure to make copy samples at the start and the end
of maintenance for checking images.
3. Drum
1) Never expose the drum to the sunlight. Be also
careful not to expose a drum to indoor light as far as
possible.
When a drum unit or a drum is out of the machine,
never fail to cover it with a drum cover.
2) When replacing a drum or a cleaning blade, refer to
Item of mounting/dismounting of a cleaning blade
for doing a replacement work.
4. After replacing a drum, be sure to reset a drum counter
before image adjustment. After replacing developer, L
detection adjustment must be conducted also.
5. When maintenance is completed, be sure to reset the
PM counter. Incidentally, a development counter is reset
automatically in the course of L detection adjustment.
6. When replacing a toner cartridge, wait until the toner
supply LED on the operation panel flashes before the
replacement.
Caution: Turn the main switch off and pull out the
power plug without fail before the work of
maintenance.
Dmax and γ correction error)
(1) Fixing unit removing
(2) Jam clearance door removing
(3) Upper cover removing
(1) Drum unit removing
(2) Drum unit check
(3) Charging corona unit removing
(4)
Charging control plate replacement
25SA2508*
(5) Charging wire replacement
(Removing & installing)
55FA2501*
(6) Charging corona unit
(Back plate and its around, and
PCL)
(7) Charging wire cleaning block/B
(Upper)25SA-254*
(8) Charging cleaning block/A
(Lower) 25SA-253*
(9) Developing unit removing
(10) Cleaning blade removing
(11) Drum removing
(12) Drum cartridge/Developing unit
assembly25SA-264*
(1) Upper part of conveyance unit
(2) Conveyance belt
(1) Paper dust removing brush
(Removing)
(2) 2nd paper feed roller
(3) Paper dust removing brush in-
stalling
(4)
Transfer synchronization lamp (TSL)
(1) Drum unit installing
(1) Back plate removing
(2) Developing suction filter check
(3) Filter K
(4) Timing belt check
(5) Drive gear oiling
(6) Back plate installing
(1) Left side external/reversal pa-
per exit unit removing
(2) Reversal paper exit rollers (Up-
per/Middle/Lower)
(3) Timing belt check
(4) Sensors cleaning
Reversal paper exit section (4
position) ADU horizontal con-
veyance section (6 position)
(5)
2
Gears oiling (drive / introduction section)
{
(6)
Reversal paper exit unit / Left side panel installing
Paper feed unit
(1) Upper right side plate and unit
removing
(2) Main body bottom plate and
around paper feed unit
25SA2612*
55FA7301*
Number
of parts
replaced
1
3
1
1
1
Cleaning
Implementation classification
Check
Lubrication
Replacement
Supply
Material used
Tools used
Blower brush & Cleaning pad
Blower brush & Cleaning pad
Blower brush & Cleaning pad
/Cotton swab/Drum cleaner
Drum cleaner & Cleaning pad
Drum cleaner & Cleaning pad
Cleaning pad & Blower brush
Drum cleaner & Cleaning pad
Blower brush
Plus guard No. 2
Drum cleaner & Cleaning pad
Blower brush
Plus guard No. 2
Blower brush & Cleaning pad
MODEL
7065
(Note 1)
- Do not remove the entrance guide plate and rollers of transfer separation corona when cleaning them.
- Basically, use Blower brush to clean roller parts. Use cleaning pad and drum cleaner only when the foreign matters
or dust on the roller cannot be removed. In that case, do not press the roller hard. Wipe it gently.
- As to the cleaning of spark arrestor sheet, clean from the reverse side of the guide plate, using cotton swab.
Make sure to wipe gently, try not to press hard. It is possible to use drum cleaner when it is soiled heavily.