Mindray DC-68, Service Manual

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Function and Performance Checking Method 5-3
5.3.2.2 Check the Monitor
Procedure Standard

Adjust LCD brightness

Adjust LCD contrast

Enter [Preset]->[General], click
[Contrast/Brightness Load
Factory]

Monitor maintenance
Log on as Service, click
[Maintenance]->[Setup]->[Test Main
Monitor] to check the monitor
functions

Press “+”, the brightness increases; and press “-”, the
brightness decreases.

Press “+”, the contrast increases; and press “-”, the
contrast decreases.

Brightness/Contrast load factory values

Click each functional button, the LCD responds
correctly, the standard is as follows:
1. Light-spot: 0; flash point: 0.
2. The adjoining dark spots are no more than 3 pairs, and
there is no adjoining dark spot in image area.
3. There is no adjoining dark spot of 3 or more than 3.
4. The dark spots are no more than 7 and those in the
image area are no more than 2
5. The distance between bad spots is no less than 5mm.
NOTE: image area refers to rectangle when the background
is black/right.
5.3.2.3 Check Touch Panel
Procedure Standard

Check if keys on the touch screen of B/
M/CW/Color basic modes can respond
normally.

Enter [Maintenance]->[System
Preset]->[General Preset] to enter the
touch screen contrast/brightness menu.

All keys function are effective.

Press on the touch screen to adjust the values,
real-time values will be displayed on the
adjusting bar.
5.3.2.4 Check DVD-R/W
Procedure Standard

Press [Eject]

Use the optical disk drive to read and burning.

Disk can be normally ejected.

Normal, no abnormal sounds.