Daktronics AB-1600-1.5,2.5 - Manual (Page 37)

Maintenance & Troubleshooting
4-1
Section 4: Maintenance & Troubleshooting
IMPORTANT NOTES:
1. Disconnect power before performing any repair or maintenance work
on the display!
2. Only allow qualified service personnel to access internal display
electronics.
3. Do not operate the display with the back sheets removed! The cabinet is positively
pressurized, directing adequate airflow around the lamps and out through the lenses.
Display operation without the back sheets in place and fans running could cause
damage to the display and will void the warranty. Fasten the back sheets securely into
place.
4. Dirt and contaminants may enter the display if it operates without the fan filters in
place or with dirty fan filters. These contaminants may cause premature failure of the
electronic components. Operating the display with dirty fan filters or without fan filters will
void the warranty.
5. The Daktronics product managers engineering staff must approve any changes
that may affect the weather-tightness of the display. This is to include, but is not
limited to, border shrouding, back sheets, cooling fans, fan filters and filler panels.
Before making ANY modifications to the weather tightness of the display, submit detailed
drawings to our engineering staff for evaluation and approval or the warranty will be null
and void.
Sub-sections 4.3- 4.12 of Maintenance & Troubleshooting applies to the servicing of
all Series 1600 large matrix displays.
Sub-sections 4.13 and 4.14 apply to servicing displays with line receivers.
Sub-section 4.15 applies to servicing displays with data distributors.
4.1 Maintenance & Troubleshooting Overview
Series 1600 large matrix displays are either front or rear accessible, depending on site requirements
and customer preference.
Information in Section 4 is below. The list also provides information found within each group.
• = Operational Summary: outlines the power and signal routing of the display, as well as operation
of the ventilation system.
• = Servicing of Display Components: explains how to remove various display components and
provides operational and diagnostic information on each item.
• = Maintenance: addresses the steps taken to keep the display in safe, operational condition.
• = Troubleshooting: lists the causes of a number of possible display malfunctions.