3-42 magicolor 330 - Base Engine Service Manual
Primary FIPS: Error Messages

3.38 - Error Message: Call for Service High Density

The image density readings indicate a problem.
Logic control on the MCU PWB detected that the printer image density was unusually high and attempts failed to
lower the density.
Step Actions and Questions Yes No
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)
1DISPENSE 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 continue running even though the
image density is too high?
Go to step 2 Go to step 3
2Replace the Dispense Motor Assembly (RRP 9.116)
Does the error message still appear?
Go to step 3 Problem
solved
3TONER CARTRIDGE INSPECTION
Remove each of the four Toner Cartridges and inspect them
for damage and toner leakage.
Are the Toner Cartridges free of damage and are they rela-
tively clean?
Go to step 4 Replace the
dirty or dam-
aged Toner
Cartridge.
4Replace the ADC Sensor Assembly (RRP 9.50)
Does the error message still appear?
Go to step 5 Problem
solved
5Replace the MCU PWB (RRP 9.123)
Does the error message still appear?
Go to step 6 Problem
solved