Editing Apple Personal LaserWriter 300 (section)

=== Canon LBP-PX Drum Unit Care ===

The integrated drum/toner design requires specific handling:

'''HP 74A/Canon EP-L Compatible Cartridge'''
* '''Drum diameter''' 24mm OPC
* '''Rotation''' 4 rotations per page
* '''Cleaning blade''' Polyurethane
* '''Waste capacity''' 250 pages

'''Drum Maintenance Steps'''

# '''Monthly inspection'''
## Open toner shutter carefully
## Look for scratches or spots
## Check cleaning blade edge
## Inspect charge roller surface

# '''Corona wire equivalent'''
## 300 uses charge roller not wire
## Clean roller with dry cloth only
## Never use liquids
## Replace cartridge if damaged

# '''Toner distribution'''
## Rock cartridge 5-6 times
## Side to side, not shaking
## Prevents streaking
## Extends cartridge life

# '''Waste toner'''
## No user service possible
## Fills at 7.5% coverage rate
## Replace when print fades
## Don't attempt to empty