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NO
(Door is closed)
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
Door alarm
䋨Condition䋩
䊶When a door is open
䊶When door delay time expires after door was open
䋨Alarm indication䋩
䊶”OPEN"indicates in reverse and non-reverse characters
䊶Audible alarm sounds intermittently after predetermined delay time expires
䇭Delay time is changeable between 0䌾15minutes
䋨Factory default: 2min.)
Check for input of door switch on Main PCB
(If it is "OPEN" between #1 and #2 on CN86)
Is BUZZER key pressed?
Is there "OPEN"indicated
on LCD?
Does audible alarm sound
after predetermined delay time
expired?
Check for delay time setting
Audible alarm silences.
”OPEN"is indicated on LCD.
Is the door closed?
”CLOSE” is indicated on LCD.
Check for input of door switch on Main PCB
Check for wire connections to Display PCB
Return to first step
Is a pin of door switch functional
when a door is closed ?