Memory/Hdd Adj.-Compress / Decompression Check - Olivetti d-Color MF651 Service Manual

12. SERVICE MODE

12.12.10 Memory/HDD Adj.-Compress / Decompression Check

A. Use
• To check whether compression and decompression are carried out properly.
• If the copy image is faulty.
B. Procedure
1. Call the Service Mode to the screen.
2. Touch these keys in this order: [State Confirmation]
press / Decompression Check].
3. Pressing the Start key will automatically start to complete a compression/decompres-
sion check sequence.
4. The check result will be displayed.
12.12.11 Memory/HDD Adj.-Memory Bus Check
A. Use
• To check to see if image data is correctly transferred from scanner to memory, and from
memory to printer.
• Bus check between scanner and memory has two steps; the scanner internal check step
as internal processing and the check step between scanner and memory. If either of the
two steps is NG, NG1 or NG2 is displayed respectively.
• If the print image is faulty.
B. Procedure
1. Call the Service Mode to the screen.
2. Touch these keys in this order: [State Confirmation]
ory Bus Check].
3. Select either [Scanner
4. Pressing the Start key will start the memory bus check and be terminated automati-
cally.
5. The check result will be displayed, [OK] or [NG].
12.12.12 Memory/HDD Adj.-DSC Bus Check
• It will be displayed in d-Color MF651/MF551 machines where the function version is
version 2 or later and in all d-Color MF451 machines.
A. Use
• To check the connection between the DSC board and the scanner section when the
optional security kit SC-507 is installed.
• When an error is detected after checking, NG1 or NG2 is displayed depending on the
location of the board where the defect is found.
B. Procedure
1. Call the Service Mode to the screen.
2. Touch these keys in this order: [State Confirmation]
Bus Check].
3. Touch [Scanner
4. Pressing the Start key will start the DSC bus check and be terminated automatically.
5. The check result will be displayed.
576
Memory], [Memory
DSC].
Service Manual
Field Service Ver. 2.0 Jul. 2009
[Memory / HDD Adj.]
[Memory / HDD Adj.]
PRT], or both.
[Memory / HDD Adj.]
[Com-
[Mem-
[DSC
Y110571-1