Olivetti d-color MF651, Руководство по обслуживанию, Страница: 635 / 1053

Field Service Ver. 2.0 Jul. 2009 12. SERVICE MODE
575
ADJUSTMENT
/ SETTING
12.12.8 CCD Check
A. Use
• To display the D/A value of CCD clamp/gain for R, G, and B.
• Used for troubleshooting for the CCD sensor.
B. Procedure
• Use the following guidelines on the correct range of values.
CLAMP:The difference between the max. and min. output values should be within
±100.
GAIN :The difference from the CLAMP values (R, B) should be within (90 for R
and B. The difference from the CLAMP value (G) should be within ±50
for G.
The difference between each pair of RO and RE, GO and GE, and
BO and BE should be within 30.
12.12.9 Memory/HDD Adj.-Memory Check
A. Use
• To check correspondence of data written to and that read from memory through write/
read check.
• If the copy image is faulty.
Rough Check
• A check is made to see if the image data reading and writing are correctly made in a very
limited area.
• The progress of the check sequence is displayed in percentage.
Detail Check
• A check is made to see if the image data reading and writing are correctly made at the
addresses and buses in all areas.
• The progress of the check sequence is displayed in percentage.
B. Procedure
1. Call the Service Mode to the screen.
2. Touch these keys in this order: [State Confirmation] o [Memory / HDD Adj.] o [Mem-
ory Check].
3. Select the desired type of check, either [Rough Check] or [Detail Check].
4. Press the Start key to start the check procedure.
5. When the check procedure is completed, the results are shown on the screen.
If the check results are NG, check the memory for connection or replace the memory
with a new one.
✽
Press the Stop key to interrupt the check sequence.
Y110571-1 Service Manual