Mindray DC-8 EXP - Troubleshooting When System Cannot be Started up; Module or Board Related; Key Points Supporting Troubleshooting

13-2 Troubleshooting of Regular Malfunctions
2
AC indicator is off
1.AC power is not input;
2.Malfunction on the AC-DC
power
1.Check the
connection of AC
power
2.Replace AC-DC
assembly
3
AC indicator is ON.
Power-on status indicator: After
pressing power button, the
indicator doesn’t flash or is off.
Power supply status indicator:
indicators 3.3V, 5V and 12V are
all off.
90% malfunction may be on the
back-end power board PCBA.
Replace back-end
power board PCBA
4
AC indicator is ON.
Power-on status indicator: press
power button, the indicator keeps
flashing.
Power supply status indicator:
indicators 3.3V, 5V and 12V are
all off.
The power board responds to
power button, but the CPU
module cannot respond on-off
of power module.
90% malfunction may be on the
CPU module.
Replace the CPU
module.
13.2 Troubleshooting When System cannot be
started up
13.2.1 Module or Board Related
No.
Descriptions
Remarks
1
Digital board module
2
CPU module
3
HDD assembly
13.2.2 Key Points Supporting Troubleshooting
No.
Key Points Supporting Troubleshooting
Remarks
1
Character and progress status during the starting of the
system
2
Warnings and prompts during the starting of the system.
3
Control panel backlight status.
4
Display indicator