Call For Service Low Density - Minolta magicolor 330 Service Manual

Primary FIPS: Error Messages
3.37 - Error Message: Call for Service Low Density
The image density readings indicate a problem.
Logic control on the MCU PWB detected that the printer image density was unusually low and attempts failed to
raise the density.
Step
SUSPECT COMPONENTS
The following components are associated with this specific prob-
lem. One or more of these components may have failed partially or
completely. If you cannot isolate the problem using this FIP,
replace each component listed below, one at a time, until the prob-
lem disappears.
• Wiring and connectors linking the components
• Developer Clutch Assembly (RRP 9.117)
1
DISPENSE MOTOR INSPECTION
1. Remove the Rear Cover (RRP 9.4)
2. Switch on printer main power.
3. Observe the Dispense Motor.
Does the Dispense Motor run?
2
Replace the Dispense Motor Assembly (RRP 9.116)
Does the error message still appear?
3
TONER CARTRIDGE INSPECTION
Remove each of the four Toner Cartridges and inspect them
for damage and contents.
Are the Toner Cartridges free of damage and are they rela-
tively full of toner?
4
Replace the ADC Sensor Assembly (RRP 9.50)
Does the error message still appear?
5
Replace the MCU PWB (RRP 9.123)
Does the error message still appear?
6
DEVELOPER HOUSING INSPECTION
Hand rotate the Rotary Frame Assembly and inspect the
magnet roll of each of the four Developer Housings for dam-
age and toner presence.
Are the Magnet Rolls free of obvious damage and are they
evenly coated with toner?
3-40
Actions and Questions Yes
Go to step 3
Go to step 3
Go to step 4
Go to step 5
Go to step 6
Go to step 7
magicolor 330 - Base Engine Service Manual
No
Go to step 2
Problem
solved
Replace the
damaged or
empty Toner
Cartridge
Problem
solved
Problem
solved
Replace the
Developer in
the problem
Housing or
replace the
Developer
Housing Assy.
(RRP 9.59)