Simplex 4005 - System Initialization; Power-Up Sequence

3-3
The following table describes what happens during the 4005 power-up process:
Table 3-1. System Initialization Functions
Step Function Action LCD Display
1.
Hardware Reset Turns ON all LEDs
2.
Verify keypad
connection
AC Power LED turns OFF
3.
Start the LCD All LCD segments show on
display
4.
Verify Code
Checksum
Silence LED turns off and
display indicates selftest in
progress
5.
Verify External RAM Trouble LED turns off
6.
Start Operating
System
Supervisory LED turns off
7.
Initialize Database Alarm LED turns off Alarm LED turns off
8. If Selftest passes …
4005 starts and the normal
status screen shown is
displayed
If Selftest fails …
The display indicates one or
more trouble conditions.
Pressing the
<
TROUBLE ACK> button
under the
TROUBLE LED
displays details of the
trouble. (See also Figure
3-2)
Note: If Selftest fails, the
4005 displays the
trouble code and
waits 45 seconds
before attempting a
restart.
Figure 3-2. Trouble Display
System Initialization
System Initialization
(Power-Up)
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Custom Label
Device Type Device
Condition
First of three
Troubles
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