1/05
3-12
DocuColor 12/DCCS50
IQ 5 Xerographic Subsystem Checkout Procedure,
Reissue
Image Quality
Go to Flag 7 on BSD 9.1 and check for an open circuit or a short circuit to ground.
Go to Flag 6 on BS
D 9.1 and check for an open circuit or a short circuit to ground. If the
wire is OK, replace the ESV Sensor (PL 5.1).
Check the output of the Developer Bias HVPS, as follows:
• Switch off the power.
• Connect the DMM (+) lead to the developer bias terminal the attaches to the front side of
the developer
housing.
• Cheat the Front Door Interlock
• Connect the DMM (-) lead to the machine frame.
• Set the DMM to the 1000 VDC range.
• Switch on the power.
• Enter dC 330 [009-076].Press Star
t.
There is a steady voltage of approximately -550 VDC present.
YN
Go to the IQ 37
Deve
loper Bias HVPS RAP.
Set the DMM to measure 1000 VAC. Enter dC 330 [009-077]. Press Start. There is a steady
volt
age of approximately 415 VAC present.
YN
Go to the IQ 37
Deve
loper Bias HVPS RAP.
Replace the Half Tone PWB (PL 9.2).
If the problem remains, replace the ROS Assembly (PL
4.1).
IQ6 IIT Checkout Procedure
This procedure is used when directed here by the IQ1 IQ Isolation Procedure
Initial Actions
Clean the following parts before proceeding
• Document Glass
• Document Transport Belt
•Mirrors
• Exposure Lamp
• White Reference Strip
Procedure
Run IIT Test Print #1 The Defect is present.
YN
Enter DC330 [9-002],Exposure Lamp. Press Sta
rt. Th
e Exposure Lamp comes on.
YN
Go to 6-
371 Exposure Lamp Fail RAP.
The
light from the Lamp is even from end to end, and there are no dark spots.
YN
Replace the Exposure Lamp (PL 3.
4).
Replace the CCD PWB (PL 3.
2).
Run IIT Test Print #28 The Defect is present.
YN
Replace the Pre IPS PWB (PL 3.5).
Replace the Post IPS PWB (PL 3.
5).
A B C
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