E-2/3DB CONTROLLER
E:\Documents and Settings\Administrator\Local Settings\Temporary Internet Files\OLK3\E2-3DB.doc
Rev. 01/13/00; Rev. 07/2000 o2L/H
Rev. 10/2000 (dwgs. 100239, 601, 601-01, 601-02, H02-258, 100031, 279L, 274S, 100089)
Rev. 06/21/00 (Reformatted Text; Revised Pg. 3 (2.4.1, 20 amp to 30 amp)
Pg. 18
4.0 TROUBLE SHOOTING
Much of the trouble shooting of this system will consist of correcting a "beacon out"
situation. There may also be a failure mode where 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) #2 Phillips Screwdriver
1) Nut Driver or Socket Set
1) Multi meter - Analog or Digital 600V AC / 600V DC Minimum
4.2 DIAGNOSTIC EVALUATION
The first step in trouble shooting 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 or corroded terminations. 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 lower 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 H40-279, and
H01-279.)
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