Canon SmartBase MPC400, Service Manual

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4-2
SmartBase MPC600F/MPC400 Chapter 4: Maintenance & Service
1.3 Periodic Inspection
None
1.4 Periodic Replacement Parts
None
1.5 Adjustment Items
The following adjustments must be made on this fax.
For the adjustment procedure, see
3. ADJUSTMENT on page 4-6.
Item When
CS LED lights-on duration When the SCNT board, or the lithium battery, or the contact
adjustment sensor are replaced. Also, when the color or brightness of the copy
image or transmission image is not normal.
Printhead position adjustment When the vertical lines shift during Bi-directional printing.
Automatic adjustment of CS LED lights-on duration
The CS LED lights-on duration, which can be adjusted via button operation, is also
adjusted automatically in the following cases:
• When power is turned ON then SRAM data is corrupted
When this product is shipped, after factory adjusment of the CS LED light-on
duration, the exposure control data is stored in SRAM. Because this data is preserved
by the Lithium battery even if the power supply is shut off, further adjustment is
unnecessary in almost all cases. When the machine’s power switch is turned on, the
data stored in SRAM is checked for correctness by Checksum, and if any data in
SRAM has been lost, adjustment of CS-LED lights-on duration is automatically
performed at that time.
NOTE