Ricoh AC205 Service Manual - Page 108

Light Image, Dark/black Image

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PRINTING QUALITY PROBLEMS 4.5.5 LIGHT IMAGE Description: Printed image is too light (no "ghosting"). Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Cause 1. Toner save mode is enabled. 2. Developer roller is contaminated or the toner cartridge is almost empty. 3. Ambient temperature is below 10 C. 4. Bad contact due to dirty terminals on the toner cartridge set. 5. Abnormal output from the HVPS. Solution B273T917.WMF 1. Turn the toner save more off. 2. Replace the toner cartridge. 3. Turn the machine off. Wait 30 minutes and turn the machine on again. Attempt to print. 4. Clean dirt from the toner cartridge and cartridge set contacts. 5. Replace the HVPS. 4.5.6 DARK/BLACK IMAGE Description: Printed image is dark/black. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Cause Solution B273T919.WMF 1. No charge voltage from the engine board. 1. Check the connector that connects the 2. Charge voltage fault due to bad contact HVPS and the engine board. between toner cartridge and cartridge set. 2. Clean the high-voltage charge terminals. 3. VD0 signal from main PBA is low. Replace the HVPS if the problem persists. 3. Replace the LSU or main PBA. B273 4-22 SM

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PRINTING QUALITY PROBLEMS
B273
4-22
SM
4.5.5 LIGHT IMAGE
Description:
Printed image is too light (no “ghosting”).
Cause
Solution
1.
Toner save mode is enabled.
2.
Developer roller is contaminated or the
toner cartridge is almost empty.
3.
Ambient temperature is below 10 C.
4.
Bad contact due to dirty terminals on the
toner cartridge set.
5.
Abnormal output from the HVPS.
1.
Turn the toner save more off.
2.
Replace the toner cartridge.
3.
Turn the machine off. Wait 30 minutes
and turn the machine on again. Attempt to
print.
4.
Clean dirt from the toner cartridge and
cartridge set contacts.
5.
Replace the HVPS.
4.5.6 DARK/BLACK IMAGE
Description:
Printed image is dark/black.
Cause
Solution
1.
No charge voltage from the engine board.
2.
Charge voltage fault due to bad contact
between toner cartridge and cartridge set.
3.
VD0 signal from main PBA is low.
1.
Check the connector that connects the
HVPS and the engine board.
2.
Clean the high-voltage charge terminals.
Replace the HVPS if the problem
persists.
3.
Replace the LSU or main PBA.
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
B273T917.WMF
B273T919.WMF