Mindray DC-25, Service Manual

Page: 184 / 213

11-6 Troubleshooting of Regular Malfunctions
All probes cannot be recognized in all probe
sockets;
Probe board ID cannot be read correctly by the
system information;
Main board or probe board malfunction.
Replace the
probe board or
main board
assembly.
11.5 IO Interface System
11.5.1 Module or Board Related
No. Descriptions Remarks
1 Main board
2 CPU module
3 IO interface board Failure rate: low
4 IO Rear board Failure rate: low
11.5.2 Key Points Supporting Troubleshooting
No. Key Points Supporting Troubleshooting Remarks
1 Working condition of the control panel Confirm if the USB main device is
functional since the control panel is
connected by internal USB cable
2 Working condition of each USB port See 2.1.2.1
3 Working condition of Video, S-Video and VGA
video interfaces See 2.1.2.1
4 Printing condition of video printer Check if output of connected video
printer is normal
11.5.3 Troubleshooting
No. Fault Description Cause Analysis Measure
1
LCD displays normally;
NO video printer output
when press <print> on
control panel;
Remote printing control
failure or video output failure
if there is no user-defined
key failure.
Replace the main
board.
2 Two speakers are mute.
Errors of the main board. Replace the main
board.