Check and Cause Solution
1. Developer roller is stained when the toner
is almost used up.
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.
(Run self-test and check 1~4)
1. Check if the Toner Save Mode is off.
2. No 1 : R
eplace the developer cartridge and
try to print out.
3. No 2 : Wait 30 minutes after printer is pow-
ered on before you start printing.
4. No 3 : Clean up the contaminated area by
the toner.
5. Replace the HVPS if the problems are not
solved by the above four directions.
7.3.6 Dark Image or a Black
• Description The printed image is dark.
Check and Cause Solution
1. No charge voltage in the Main PBA.
( Perform Engine Test Mode : Diagnostic
code 4 HVPS check.)
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. If steps 1 and 2 above did not correct the
problem, replace the HVPS .
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