Iq6 Iot Background Rap - Xerox DocuColor 2240 Service Manual

IQ6 IOT Background RAP

Initial Actions
• Perform IQ1 IOT Image Quality Entry RAP first.
• Perform Max Setup (ADJ 9.1). If this does not resolve the problem, continue with this
RAP.
NOTE: Some background is unavoidable on certain media, such as heavyweight paper and
transparencies. Ensure that the customer selects the correct settings on the UI and print driver.
Procedure
The problem is a yellow or green background that started after Auto Gradation was per-
formed.
Y N
The problem is high density, single-color background.
Y N
Examine the face of the ADC Sensor. The ADC Sensor is clean.
Y N
Go to the 9-684 RAP to troubleshoot the ADC Sensor Solenoid.
Examine the Transfer Belt for excessive dirt, damage, or uncleaned toner. The Belt
is clean.
Y N
Do not attempt to clean the cleaning blade. It WILL be damaged if any wiping or
excessive pressure is applied.
Check the IBT Cleaner Assembly for damage or wear. Clean or replace as
required (PL 7.1).
HIGH VOLTAGE!
Exercise care when making the voltage check in the following steps.
Enter dC140 [09-026]. Measure the voltage from P/J 580, pins 1, 3, 5, and 7. The
voltage is approximately -540 VDC on all pins.
Y N
Go to the IQ21 RAP to troubleshoot the Developer bias circuit.
Replace the Transfer Belt (PL 5.3). If this does not resolve the problem, replace the
2nd BTR (PL 2.8). If the problem persists, replace the MCU PWB
The background is very high and even density, and covers the entire sheet (no
edge erase.
Y N
Check the following:
• Check the end-of-life counter for the Toner Cartridge and Drum Cartridge for
the affected color. Replace if at or near end-of-life (see
in Section 6).
• If the problem continues, examine the Developer Housing for the affected color.
Check for toner bridging, uneven brush, or loose High Voltage terminals. Clean,
repair, or replace as required
A B
Initial issue
DC 3535/2240/1632, WC M24
CAUTION
WARNING
(PL 13.1).
Machine Consumables
(PL 6.2).
A B
• If the problem persists, replace the ESS PWB
Go to the IQ23 RAP.
Perform the following:
• Check the following NVM locations:
– 700-397 = 44 for XC (8.5x11 paper); 5 for XE (A4 paper)
– 701-912 = 1
– 701-924 = 0
– 701-929 = 0
– 715-144 = 2 for XC (Color Expressions paper); 4 for XE (ColorTech+ paper)
– 715-400 = 1
• Perform Max Setup (ADJ 9.1). Ensure that the IIT Calibration
the instructions, and that the specified paper (XC = Color Expressions paper; XE = Col-
orTech+ paper), and correct Color Test Pattern
used.
09/03
3-9
(PL 13.1).
(ADJ 9.7) is performed per
(Product Tools and Test Patterns) are
Image Quality
IQ6