Brother HL-4000CN, Руководство по обслуживанию, Страница: 20 / 345

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3. Trim Activity
Trim activities for HL-4000CN should be made within every SM/UM, mainly for
maintaining the machine performance. There is no service call performed only for the
trim activity.
3.1 Trim activity procedure
1. Check the overall operation before performing the trim activity.
Print any Internal Test Pattern to output three patterns: all colors of 20 % each,
halftone and grid.
All colors of 20 % each: IBT belt, scratches on the drum surface, and fusing
problem are checked.
Halftone pattern: Low density area reproduction problem, color balance and fusing
problem are checked.
Grid pattern: Color registration problem and fusing problem are checked.
* See page V-51 for test pattern output method.
2. Clean the interior of the machine.
Clean toner contamination and paper dust in the paper path area.
(Operator area should be cleaned carefully.)
3. Check the periodic replacement parts(consumable parts). Replace as required.
4. Safety check.
Check the Power Cord for damage or loose connection.
5. After 1 to 4 above completes, do the following overall operation checks.
Machine operation
Print quality
Meter reading
3.2 Mechanical consumables and periodic replacement parts
A mechanical consumable should be replaced after checking the printed sheets
count during trim action.
<Mechanical consumables>
Consumable Product Code Number of sheets that can be
printed*1
Black Toner Cartridge TN-11BK 8.5K
Cyan Toner Cartridge TN-11C 6K
Magenta Toner Cartridge TN-11M 6K
Yellow Toner Cartridge TN-11Y 6K
Print Head Cartridge PH-11CL 30K
Transfer Roll Cartridge
(with Toner Collector Bottle) TR-11CL 25K
*1: Condition
Paper size: A4 or LETTER
Toner coverage: 5%
Ratio of B/W to color: 1: 1
Average number of sheets printed at onetime: 4 sheets
<Parts for periodic replacement>
Consumable Replacement interval Remarks
Fuser Unit 100K prints
Retard Roll 100K prints