TWR Lighting E-1DB2, Manual

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M.E-2009.E-1DB2
3/25/07 – rev. 5/28/09
E-1DB2 CONTROLLER
4.0 TROUBLESHOOTING
Much of the troubleshooting of this system will consist of correcting a "beacon out" situation.
There may also be a failure mode where the flashtube is still flashing, but at the wrong rate
or the wrong intensity.
You must study and understand the safety messages and the theory of operation before
attempting any service on this system. Servicing this system must be done by qualified
personnel only.
4.1 TOOL REQUIREMENTS
In order to be prepared to trouble shoot or repair this system, a minimum amount of
tools and equipment will be required. A recommendation list includes:
1) 5/16 Flat Electrician's Screwdriver 1) 5/32 Allen Wrench
1) #2 Phillips Screwdriver 1) Needle Nose Pliers
1) Nut Driver or Socket Set 1) Precision Flat Screwdriver
1) Multi meter - Analog or Digital 600V AC / 1,000V DC Minimum
4.2 DIAGNOSTIC EVALUATION
The first step in troubleshooting of this system or performing annual maintenance
will require the technician to open the controller door. With the power off to the
controller, the technician should look over the controller circuit, and repair or replace
any apparent problems such as loose wire connections, corroded terminations, or
burnt parts. After the initial visual checks have been completed, restore power to
the controller and pull out on the plunger of the cabinet safety switch (CSS) located
at the right edge of the enclosure. Observe at this time the LEDs located on PCB
#1, and PCB #2. Determine, by observation of these LED indicators, if the controller
is performing to normal operation.
LEDs on PCB #1 are numbered from top to bottom, 1-9. LEDs on PCB #2 are
numbered from top to bottom, D14 - D16. (See drawings H02-329, and H01-329.)
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