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5-17
91390 QUBE
TROUBLESHOOTING
Qube Monitor Does Not Power ON
When you connect an external power supply to AC-mains and to the
monitor, the AC-mains indicator illuminates to show that the DC-
input is good. If you install batteries, the battery status indicators are
lit as well. Refer to Figure 5-12.
Figure 5-12 AC-Mains and Battery Status Indicators
If the AC-mains indicator is not lit, check that the external power is
good. The green LED on the power supply lights. Replace if
necessary.
1 If the power supply is good but the AC-mains indicator is not lit,
the power supply section of the CPU PCBA is not functioning.
Check and replace these parts in order:
1 Connector PCBA
2 Mon-Dock PCBA
3 CPU PCBA
If the AC-mains indicator is lit, depress ON/OFF switch on the unit.
The ON/OFF switch illuminates and the system begins the startup
sequence. If the switch illuminates but the system does not start up,
refer to the troubleshooting flowchart: Qube Monitor Powers ON,
But Fails System Startup on page 5-19.
1 If the ON/OFF switch does not illuminate when pressed,
disassemble the monitor. Check the cable connections between
the Front-end assembly and the CPU PCBA. Check and replace
these parts in order:
1 Front-end (bezel) assembly. Check ON/OFF switch and the
cable to indicator board
2 Cable between indicator board and CPU PCBA
3 Connector PCBA
4 Mon-Dock PCBA
5 CPU PCBA
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