Dark Image Or A Black; Uneven Density - Ricoh B173 Service Documentation

4.6.6 DARK IMAGE OR A BLACK

Description
The printed image is dark.
Check and Cause
No charge voltage in the Main Board.
(Perform Engine Test Mode diagnostic
code 4 HVPS check.)
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.

4.6.7 UNEVEN DENSITY

Description
Print density is uneven between left and right.
Check and Cause
The pressure force on the left and right
springs of the transfer roller is not even,
the springs are damaged, the transfer
roller is improperly installed, or the
transfer roller bushing or holder is
damaged.
The life of the Developer has expired.
The toner level is not even on the
developer roller due to the bad blade.
SM
PRINTING QUALITY PROBLEMS
Clean the high voltage charge
terminal.
Check the state of the connector,
which connects the Main Board and
HVPS.
If steps 1 and 2 above did not correct
the problem, replace the HVPS
(SMPS).
Solution
Replace both the left and right Spring
Holder.
Problem with the toner cartridge,
replace the AIO and try to print again.
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Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
B173T919.WMF
B173T920.WMF
B173