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HP LaserJet Quick Reference Service Manual: Bidirectional Parallel Interface

Volume i.
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User manual - 449 pages
Manual - 432 pages
Software manual - 418 pages

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Bidirectional Parallel Interface

(LJ 6L, 5Si, 5L, 6P, 5P, 5, 4V, 4P, 4L,
4 Plus, 4, 4Si, and IIISi)
The bidirectional parallel interface (IEEE-1284 compliant) is compatible
with Centronics parallel interfaces. The following items are required to
take advantage of the enhanced capabilities provided by bidirectional
parallel interfaces, such as bidirectional communication:
Software application support for these features.
An IEEE-1284 compliant parallel cable with the correct pin
configuration (see below).
Signal Name
nSTROBE
DATA 1
DATA 2
DATA 3
DATA 4
DATA 5
DATA 6
DATA 7
DATA 8
nACKNLG
BUSY
CALL (PE)
SELECT
nAUTOFd
On VDC (GND)
nFAULT
nSelIn
94 – Input/Output (I/O)
Printer Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
19 THRU 30
32
36
Parallel Port
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
18 THRU 25
15
17
EN

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