Led Array Unit - Printronix L5000 Series Maintenance Manual

LED Array Unit

Connection
This unit is connected to the MPU board head driver and the DC Power Supply
board, as shown in following diagram.
Interface signals
The following signals are sent and received between the head driver and LED array
unit.
Signal
Clock (CLOCK)
Data 1
Data 2
Data 3
Data 4
Load
Strobe 1 (*STB1)
Strobe 2 (*STB2)
Logic power supply + (VCC)
Logic power supply – (VSS)
LED drive power supply + (VDD)
LED drive power supply – (GND)
6–14
DC Power
Supply
Head Driver LED Array
Electrical and Wire Data