J1-Add Yellow Toner - Xerox DocuPrint C55 Service Manual

J1 ADD YELLOW TONER RAP
The yellow toner concentration sensor has
detected low yellow toner in the yellow
developer assembly. When this occurs, the
Printer will display " Adjusting Print Quality" and
attempt to tone up.
NOTE: If a new color developer housing has
been installed, make sure the 3 seals have
been removed from the left side of the
housing.
INITIAL ACTION
Check with the customer to see if they have
already added Yellow Dry Ink. Add Yellow Dry
Ink, if required.
Adding too much toner can cause the toner to
" cake" and not be dispensed.
(C55/C55mp)
Put the printer in the Off Line mode.
Select the SERVICE Menu and print a
Diagnostic Test Sheet.
Determine the Engine Software version from
the Diagnostic Test Sheet. If the Software
level is Version 66, replace the PCU PWB.
All Printers, switch the power off wait 10
seconds and switch the power on. Allow the
Printer to try to tone up to recheck for the fault.
PROCEDURE
Enter IOT normal diagnostics. Scroll to the
MOTOR TEST program and Press Form
Feed [1] to switch on the motors while
observing the Color Toner Motor.
The Color Toner Motor is rotating normally.
A
DocuPrint C55/C55mp/[NC60]
A
Y N
Refer to BSD 9.11 in Section 7 and
troubleshoot the Color Toner Motor lines
(CN116-1, 2) for an open or a short to
ground.
If no wiring problem exists, replace the
PCU PWB. If the problem still exists,
replace the Color Toner Motor.
Exit from diagnostics .
Set up the meter to read +24 VDC. Measure
between CN115-16 (+) and ground (− ).
Switch the power off wait 10 seconds and
switch the power on while monitoring the meter.
The meter swings from +24 VDC to 0.
Y N
Go to BSD 9.10 in Section 7 and trouble-
shoot the Yellow Toner Solenoid signal
and +24 VDC Interlocked (CN115-16, 15)
for an open.
If no open exists, replace the PCU PWB.
If the problem still exists, replace the
Yellow Toner Solenoid.
Check the Yellow Dispense Shaft to see if it
rotates when the Solenoid energizes. If not,
look for a mechanical problem (gears etc.).
Check the ground to the Yellow Toner
Concentration Sensor (CN118-4 to CN1009-7)
BSD 9.10.
If the ground is OK, replace the PCU PWB.
2/99
2-15
Color
Toner
Motor
Y Disp.
Shaft
01/02
STATUS INDICATOR RAPs
J1