Part 1 Troubleshooting Checklists
Troubleshooting the Instrument
169
Troubleshooting the System Board LEDs
Switch the Monitor off then on again to observe the System Board LEDs. These can be
viewed through the top left corner of the rear panel. (You need to remove the Server to view
these LEDs).
The meaning of the System Board LEDs is given in the following table together with a brief
summary of possible defect conditions:
LED
Description
Defect Condition
Green
+5V power LED. When on, indi-
cates the presence of +5V.
Off: Check Power Supply
and associated cabling.
Yel-
low
Main CPU status LED—When on
and blinking, this LED indicates
normal CPU operation.
This LED starts to blink 2 times per
second after the red Error LED
switches off then slows to blink 1
time per second after the red Error
LED switches off when the system
boot has finished (approximately 2
seconds).
If permanently on or off,
indicates a hung CPU.
- Reload software
- Exchange system board.
Red
Error LED—When on, this LED
indicates an error.
This LED switches on for about 1
second after the System Board has
been reset then switches off.
If permanently on, the Sys-
tem Board is probably
defective.
View (x3)
System Board
LEDs
G
re
en
Yel
lo
w
R
ed
View (x1)
System Board
LED (ECG OUT)
Remove
Power Supply
Cover
Содержание M3000A
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