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Section 8 Hardware Malfunction and Troubleshooting
8.1
Black Screen
The screen is not displayed after startup.
8.1.1
Reasons
1)
No power supplies.
2)
Malfunction of connection line of LCD panel.
3)
LCD panel fault.
4)
Core program failure.
5)
Power strip failure.
8.1.2
Troubleshooting
Please follow the steps in order. After each step is finished, retest whether the fault is
cleared or not. If not, proceed to the next step.
1)
Check whether the power plug is plugged in tightly.
2)
Replace the adaptor to test for adaptor failure.
3)
Disassemble the machine to enclosure and check whether all cables are properly plugged in.
4)
Replace the core board.
1.
Disassemble the shell of the analyser.
Use alcohol to dissolve the heat melt glue
on the connector to remove the upper panel.
Unscrew four screws on the Main I board as
shown in the figure.
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