Samsung CLX-8540ND Service Manual page 355

● Code : I-7
● Symptom :
There is a white gap between the background and text on printed page.
The printed text or picture is not aligned.
● Possible Cause:
1. ACR (Auto Color Registration) function Off or Fail
● Troubleshooting method :
- ACR (Auto Color Registration) function Off : ACR function is 'off' status.
- ACR fail : ACR function is executed automatically but failed.
Execute the ACR function manually.
- ACR Sensor Calibration defect
ACR Sensor Calibration was not executed.
ACR Sensor Calibration fails continually.
(1) Enter the admin mode and enable the ACR function.
( Machine Setup > Setup > Color > Auto Color Registration > ON )
You can change the ACR execution condition.
- Page Condition
- Inner Temperature Condition
- LSU Temperature Condition
(2) Execute the ACR function manually.
( Machine Setup > Setup > Color > Auto Color Registration > Execute Now )
(3) Execute the ACR Sensor Calibration.
( Tech Mode > Test Routines > Other > ACR Sensor Calibration > Yes )
(4) If the ACR Sensor Calibration fails continually, check the following.
A. Check the ACR Harness is defective. Replace it.
B. If the problem persists, replace the ACR Sensor
C. If the problem persists, replace the Engine Control Board.
Troubleshooting
● Inaccurate Color Registration 2/2
(2)
(3)
(4)
4-193
(1)