Light Image; Dark Image Or A Black - Dell 1815 Mono Laser Service Manual

Troubleshooting

7.3.5 Light Image

The printed image is light, with no ghost.
• Description
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer

7.3.6 Dark Image or a Black

The printed image is dark.
• Description
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Service Manual
7-12
Check and Cause
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.
(Run self-test and check 1~4)
Check and Cause
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.
Solution
1. Check if the Toner Save Mode is off.
2. No 1 : Replace 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. No3 : Clean up the contaminated area by
the toner.
5. Replace the HVPS if the problems are not
solved by the above four directions.
Solution
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 .