Drum Cartridge Replacement; Drum Cartridge Replacement; Drum Cartridge Replacement Timing; Drum Cartridge Replacement Procedure - Sharp Z-21 Service Manual

[11] Drum cartridge replacement

The drum cartridge should be replaced by a service engineer, and
should not be replaced by the user.

1. Drum cartridge replacement timing

The useful life of the drum cartridge is approximately 10,000 copies.
When the internal counter reaches 9,700 copies and the power
switch is turned on, all three exposure indicators will start to blink.
This is an indication that a replacement of the drum cartridge will be
needed soon. Copying can be performed using the normal procedure
during this time. After approximately 300 copies have been made, the
READY indicator will go off, all three exposure indicators will blink
continuously, and the copier will stop operating. Replace the drum
cartridge at this time.

2. Drum cartridge replacement procedure

2-1. Drum cartridge replacement

1. Turn the power switch off.
2. Open the front cover and pull out the TD cartridge.
3. Fold up the exit tray and remove the paper tray.
4. Lift the copier by the handle and stand it up with the exit area on
the bottom.
5. Push the tab on the bottom cover towards the rear side of the
copier to open it.
6. Push the bottom cover release lever to the left to remove the
bottom cover.
7. Push the drum cartridge release lever up, rotate the cartridge
upwards and pull it out from the copier.
8. Insert the top of the new drum cartridge along the grooves on
both sides.
9. Rotate the drum cartridge downwards until it clicks and locks in
place.
10. Remove the black sheet cover from the drum cartridge.
11. Replace the bottom cover by first placing the tab at the lower left
into the hole in the copier as shown, then inserting the right side
at an angle.
12. Close and securely lock the bottom cover.
13. Set the copier back down as usual.
14. Slide the TD cartridge in until it locks in place and close the front
cover.
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