December 2006
6-28
WorkCentre M20, 4118, FaxCentre 2218 Family
GP 6
General Procedures and Information
ROM Test
Use this procedure to test the machines ROM. The result and the software version will appear
on the LCD display:
• FLASH VER: 1.00 V
• ENGINE VER:1.00V
Pattern Test
This procedure is used during manufacturing only. Not to be used during service.
Shading Test
Use this procedure to test the CCD. If the image quality is unsatisfactory, perform this proce-
dure to check the operation of the CCD.
NOTE: Before performing the adjust shading test, ensure the DADF is lowered.
Perform the following:
1. Enter service mode, GP 3.
2. Select ‘ADJUST SHADING’.
3. Press the SET UP button, then an image will be scanned.
4. After the scan, the CCD shading profile will be printed, Figure 1.
5. Look at the shading test profile. The result of the test will be printed at the bottom of the
page. If the result of the test is ‘OK’, the CCD is good.
Figure 1 Shading profile
6. If the shading test result is not ‘OK’, install new components listed in the relevant RAP.
Error Rate
If the error rate is about to exceed the set value, the Baud rate is automatically lowered, by up
to a maximum of 2400 bps, to ensure that the error rate remains below the set level.
The rate can be set between 5% and 10%.
Modem Speed
The maximum modem speed can be set.
The machine will automatically lower the modem speed setting when communicating with a
machine that has a lower transmit/receive setting.
The default modem speed setting is 33.6Kbps. This default setting should not be changed.
Engine Test
Refer to Engine Test Mode Entry, GP 1.
To Next Page
Loading...
