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Power-On Diagnostic Flowchart (Part 2 of 3)
Status
Switch
~
Test
Status
Switch
I)
Normal
~
Line Sync*
o
Line Check
o
Internal Check
o
Storage Check
•
Ready
D
o
Read-only storage readies
read/write storage for
normal operation
Power-on diagnostic
switches control to
main program
*The Line Sync light is on when the controller is polling.
204
No data should be
present
Ready light off
Scan code is presented as
8 position binary pattern
on screen
Station
Address
No
/
/
Clicker sounds every
2 to 3 seconds
/
/
,
>
/
To Power-On Diagnostic Flowchart (part 1 of 3)
Maintenance Procedures
5251 MIM
1-65
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