Printronix L5000 Series Maintenance Manual page 253

Clock
This signal clocks in data.
Data 1–4
This signal transmits data to control illumination of the various LED chips. The
signal is asserted for illumination, and negated for no illumination.
The print head of this machine is composed of 4 LED arrays. Data 1–4 are serial
signals to transmit data concerning illumination of the LED chips comprising these
LED arrays.
The following are the number of the LED chips comprising these 4 LED arrays (i.e.,
the number of dots which can convey illumination data following data 1–4).
For 400 DPI (total number of emitters 5888):
Signal
Data 1
Data 2
Data 3
Data 4
For 300 DPI (total number of emitters 4416):
Signal
Data 1
Data 2
Data 3
Data 4
Electrical and Wire Data
Number of dots
1536 dots
1536 dots
1536 dots
1280 dots
Number of dots
1152 dots
1152 dots
1152 dots
960 dots
6–15