Chapter 4: Troubleshooting
Troubleshooting Tables
Service Manual 4-29
4.4.4 User Interface – Touch Panel
4.4.4.1 Button Not Working
4.4.4.2 Cannot Enter Service Mode
4.4.4.3 Sys Fail 08 [xx xx 00 00]
4.4.5 System Failure – Sys Fail Message
When troubleshooting a System Failure condition, always record the error list or download the event log.
Possible Causes Step Troubleshooting Procedure Comments
Disconnected
Touch Panel
1.
Verify proper connection of Touch Panel at J5 on
Control PCA
Touch Panel-
defective switch
2.
Go into Service Mode and diagnose using the
touch panel test.
3.
If unable to enter Service Mode via buttons, refer
to alternate method in section 4.4.4.2 below.
4. Enter diagnostics -> button test
5.
If the diagnostic test indicates either open or
shorted buttons, replace Touch Panel
Part Number:
M1079381
Possible Causes Step Troubleshooting Procedure Comments
"?" or "Alarm Silence"
button not working
1.
Locate on 8-position dipswitch on the Control PCA.
Push the first dipswitch, located on the left side, up
to the ON position (dip position 1). The unit will go
directly into Service Mode during next power on.
2.
Go into Service Mode and diagnose with the touch
panel test.
Possible Causes Step Troubleshooting Procedure Comments
Touch Panel -
Button Shorted
1. Refer to section 4.4.5.7.
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