Filter
Top Products
5-20 magicolor 330 - Base Engine Service Manual
Primary Fault Isolation Procedures
5.9 - Spots
PROBLEM
There are spots of toner scattered randomly across the page.
THE PRINTER DISPLAYS
NO ERROR MESSAGE.
• MCU PWB (RRP 9.123) • 2nd BTR Assembly (RRP 9.78)
• Waste Toner Sensor (RRP 9.53)
• Toner Cartridges (RRP 9.55, 9.56, 9.57, and 9.58)
• Developer Fan (RRP 9.122)
Step Actions and Questions Yes No
1
PAPER HANDLING ASSEMBLY INSPECTION
Slide the Main Paper Handling Assembly out of the printer and
inspect the top of the Registration Chute Assembly.
Is the top of the Registration Chute Assembly free of toner?
Go to step 2 Go to step 9
2
XEROGRAPHIC CARTRIDGE INSPECTION
Remove the Xerographic Cartridge (RRP 9.48) and inspect the exte-
rior of the Cartridge.
Is the exterior of the Xerographic Cartridge clean and with no
obvious toner leakage?
Go to step 3 Go to step 9
3
DEVELOPER ASSEMBLY INSPECTION
1. Remove the Top Cover (RRP 9.3).
2. Turn the Rotary Frame and inspect the four Developer Assem-
blies.
Does each Developer Assembly appear clean, with any obvious
toner on the exterior of the Assembly or falling from the Magnet
Brush
Go to step 4 Clean the dirty
Developer
Assembly. If
the problem
reoccurs,
replace the
faulty Assem-
bly
4
FUSER INSPECTION
Slide the Fuser Assembly out of the printer and inspect the Assem-
bly.
Is the Fuser Assembly free of toner?
Go to step 5 Clean or
replace the
Fuser Assem-
bly (RRP 9.80)
5
BELT CLEANER INSPECTION
Remove the Belt Cleaner Assembly (RRP 9.76) and inspect the
Assembly.
Is the Belt Cleaner Assembly clean and with no obvious toner
leakage?
Go to step 6 Replace the
Belt Cleaner
Assembly
(RRP 9.76)
RS509X