Daktronics H-813S - Manual (Page 17)

Section 3: Maintenance & Troubleshooting
IMPORTANT NOTES:
1. Disconnect power before any repair or maintenance work is done on
the scoreboard display!
2. Any access to internal display electronics must be made by qualified
service personnel.
3. Disconnect power when the scoreboard display is not in use.
Reference Drawings: Lamp Service, 13" 4x7 DOT Matrix Digit .............. Drawing A-26872
Lamp Service, 7 Segment Bar Digit...................... Drawing A-38533
Lamp Driver, 16 Col, w/o Fan ............................... Drawing A-37073
Segmentation, 4x7 Digit........................................ Drawing A-26762
Segmentation, 7 Segment Bar Digit...................... Drawing A-38532
Driver Assignments, H-XX13S.............................. Drawing A-28860
Driver Assignments, H-XX13B.............................. Drawing A-39711
Component Locations, H-XX13S .......................... Drawing A-28823
Component Locations, H-XX13B .......................... Drawing A-39710
3.1 Lamp Service
The primary service required by Daktronics Hockey Scoring Systems is to replace lamps
periodically. The replacement lamp is type no. 656, 28V, 60 ma, wedge base and the
Daktronics part number is DS-1115. Do not use a higher powered lamp or a lamp rated for
different voltage or damage may result.
Lamp replacement procedure is illustrated in Drawings A-26872 and A-38533.
3.2 Lamp
Driver
In each display the task of switching lamps on and off is performed by the Lamp Driver
(Drawing A-37073). Each Lamp Driver has 20 connectors providing power and signal inputs
and outputs to digits and indicators. The function of each of these connectors is as follows:
Connector Function
1 thru 16 Outputs to digits and indicators
17 Control signal input
18 Power for connectors 1 thru 8
19 Power (120V) for driver logic
20 Power for connectors 9 thru 16
Output connectors 1 through 16 each have 9 pins. Pin 7 provides power to the digit or
indicators wired to that connector. The other 8 pins provide switching connections. Drawings
A-28860 and A-39711 show which connector number or connector and pin number, operates
each digit or indicator in each display model.
Maintenance & 3-3
Troubleshooting