
Chapter 5 Troubleshooting and on board repair
MDC-5000 Series
5-12
0092653004-00
5.3.2.4 Operation unit error
Cannot operate all keys?
Is
“Panel not connected”
message displayed in
Alarm message area at
lower right of the display?
Confirm which keys and
encoders break down by
MENU> MAINTENANCE>
BITE> PANEL TEST.
No
Yes
Main logic PCB
(E73-700*) failure
No
No
Is the LED on Operation
unit turned on and the
buzzer sounds?
Yes
Yes
Operation unit failure
Operation unit failure
*Subject to version change
Summary of Contents for MDC-5004
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Page 151: ...0092653004 00 A 1 INTER CONNECTION DIAGRAM RB806 ...
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Page 155: ...0092653004 00 A 5 INTER CONNECTION DIAGRAM MRM 110 MRO 110 ...
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