Check and Cause Solution
1. Develop roller is stained when the toner
of developer cartridge is almost con-
sumed.
2. Ambient temperature is below than 10°C.
3. Bad contact caused by the toner stains
between the high voltage terminal in the
HVPS and the one in the set.
4. Abnormal output from the HVPS.
1. Check if the Toner Save mode is off.
2. R
eplace the developer cartridge and try to
print out.
3. Wait 30 minutes after printer is powered on
before you start printing.
4. Clean up the contaminated area by the
toner.
5. Replace the HVPS if the problems are not
solved by the above four directions.
6.5.6 Dark Image or a Black
• Description The printed image is dark.
Check and Cause Solution
1. No charge voltage in the engine board.
( Perform DCU diagnostic code 01)
2. Charge voltage is not turned on due to
the bad contacts between power supply
in the side of the Developer and charge
terminal of HVPS.
1. Clean the high voltage charge terminal.
2. Check the state of the connector which
connects the engine board and HVPS.
3. Replace the HVPS if not solved by the
above direction 1 and 2.
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