Mindray DC-25, Руководство по обслуживанию

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Troubleshooting of Regular Malfunctions 11-9
No. Key Points Supporting
Troubleshooting
Remarks
1 Backlight of the LCD More evident in dark
2 VGA output port on IO interface
board Need external LCD
3 Display mode of the LCD
Blank screen, or “No Signal” displayed, or
disordered screen, etc.
11.7.3 Troubleshooting
No. Fault Description Cause Analysis Measure
1 Control panel powered on normally;
No display (blank screen) on the
LCD;
Displays normally with external LCD
connecting by VGA.
Monitor
malfunction
Replace the Monitor
assembly.
2 Control panel powered on normally;
The color of some mode key turns on
orange.
No display (blank screen) on the
LCD, with backlight only; or,
disordered screen.
Main board or
LCD control
board malfunction
Replace the main
board assembly or
display assembly
3 Control panel powered on normally
and no key indicator turns on orange
“No Signal” displays on LCD;
CPU module
malfunction
Replace CPU module
11.8 Printer Adapter Related
Troubleshooting