Mindray VS-900 - Alarm Lamp Failures; Button and Knob Failures

5-3
Symptoms Possible Cause Troubleshooting
Touchscreen
does not
respond.
Touchscreen disabled
Check if there is a
symbol displayed above the
[Main] quickkey. If yes, press and hold the [Main
Menu] quickkey for more than 3 seconds to enable
the touchscreen.
Cable defective
1. Check that the cable between the touchscreen and
touchscreen control board is correctly connected.
2. Check that the cable between the touchscreen
control board and main board is correctly connected.
Touchscreen control
board defective
Replace the touchscreen control board
Touchscreen defective Replace the touchscreen.
The main board failed. Replace the main board.
Touch
position
invalid
Touchscreen not
calibrated
Calibrate the touchscreen.
5.6.3 Alarm Lamp Failures
Symptoms Possible Cause Troubleshooting
The alarm lamp
is not light or
extinguished, or
the alarm lamp
illuminates
abnormally.
Cable defective
1. Check that the cable between the alarm lamp
board and main board is correctly connected.
2. Check that the cables and connectors are not
damaged.
Alarm lamp board
defective
Replace the alarm lamp board
The main board
failed.
Replace the main board.
5.6.4 Button and Knob Failures
Symptoms Possible Cause Troubleshooting
Buttons do not
work
Cable defective
Check that the cable between the keypad board
and main board is correctly connected.
Keypad board failure Replace the keypad board.
Knob does not
work
Cable defective
1. Check that the cable between the knob and
keypad board is correctly connected.
2. Check that the cable between the keypad board
and main board is correctly connected.
Knob failure Replace the knob encoder.
Keypad board failure Replace the keypad board.