Specifications

Rev. I Maintenance and Adjustment 7-1
MR Series Technical Reference Manual
Chapter 7
Maintenance and Adjustment
Cleaning the IM-800 Front Panel Ventilation Opening
There are many small holes in the left of the front panel. Air enters here and goes out the
ventilation openings on the rear side and right side. If these holes become clogged with dust,
remove the dust with a small vacuum cleaner or other appropriate cleaning device.
Display Adjustment for DM-M820
The display adjustment procedure for the DM-M820 depends on when the unit was
manufactured.
Determining which procedure to use
Check the label on the manufacture's plate at the base of the DM-M820.
SERIAL NO. *xxxx00xxxx*
：Display Adjustment (See page 7-2)
Later SERIAL NO. *xxxx01xxxx*
：Display Adjustment (See page 7-4)