● Code :
S3-3122
● Error message :
Scanner Shading Error.
● Symptom / Cause :
Machine does not copy properly. (it can be print white paper)
/Scanner can’t make shading data because of following reason:
- AFE detection is failed
- Shading check sum is failed
- Scanner CIS is defective
- Scanner Motor not working
● Troubleshooting method :
1. Enter tech mode. (refer to 4.1.5)
2. Select “SD” menu using Up/Dn key.
3. Press Start Key.
Shading report will be printed such as below images after machine starting scan shading.
4. Check shading report
if result of waveform for each color is irregular or very low level, try again 2~3.
if result is still produced even though try again, change CIS or main board.
※ Shading normal result
● Replacement part
Caution
Actually, there are two kinds of method to print
shading report. One is using “SD” menu, the other is
using “AA” menu (All Report).
As soon as machine is booting up, if you choice
second one menu(AA), report is printed without
shading. At this time, result is shown only black
shading.
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