HP 4 Plus Manual

							3Send the print job. The status light on top of the IR pod turns
on. (Printing a complex document or using a software print
spooler on your PC may delay the time it takes for the IR
status light to turn on.) If the status light does not turn on,
realign the port on your portable equipment with the pod,
resend the print job and stay within the range of operation
during printing.
4If you have to move the device, for example, to add paper,
make sure you stay within the range of operation to maintain
the connection. If the connection is interrupted  before your
print job is complete, the IR port status light will turn off. You
have from 3 to 40 seconds (depending on the host
implementation) to correct the interruption and continue the
job. In this case, the IR port status light turns back on.
5The connection can be permanently broken (interrupted for
more than 3 to 40 seconds) if the “sending ” IR port is moved
out of the range of operation or if anything passes between the
two ports to block the transmission, such as a hand or piece of
paper, or even direct sunlight. In this case, the job needs to be
reprinted.
Figure B-7 IrDa Port Ranges
LaserJet 5/5M/5N Printer  B-37 
						

							If you still have problems printing, make sure you are using an
IrDA-compliant device and proper software and have selected the
proper port for printing.  
NoteThe IrDA standard for infrared communications
represents an emerging technology. Older
non-IrDA-compliant portable devices may not be
compatible with your HP LaserJet 5/5M/5N
printer. If you continue to have problems printing
using the IR port, contact the manufacturer or
dealer where you purchased your portable device
to verify compatibility with the IrDA standard,
and follow the troubleshooting procedure
immediately following.
Troubleshooting IR Printing Problems
IR printing problems may be caused by any of the several system
components or by lack of proper configuration.  The following
checklist will help determine the source of the problem.
1Verify the user is operating the printer and PC as described in
the User
’s Manual:  less than one meter between devices, and
not more than plus or minus 15 degrees from direct center.
2Verify the host PC or laptop and the printer are
IrDA-compliant and have the necessary hardware components
for IR communication.
3Verify the IR software has been loaded on the primary device.
(This is system software and should be available from the PC
manufacturer.)
4Verify the host PC or laptop is properly configured.  Check the
port assignment, the IRQ level, and the base address value.
Check both the DOS AUTOEXEC.BAT and CONFIG.SYS
files, and the Windows system configuration.
B-38 LaserJet 5/5M/5N Printer 
						

							If all these elements are properly installed and configured, use
the IR test tool to test the IrDA protocol transmission and device
operation. This tool for troubleshooting IR communication
problems, shown in Figure 10, has been developed by Genoa
Technology, Inc., in cooperation with Hewlett-Packard. The part
number is 5062-4661 and can be ordered through HP Parts Direct
Ordering.
The IR test tool can be used with any IrDA-compliant primary or
secondary device, regardless of manufacturer.
To test the peripheral device:
1Put the HP LaserJet 5 in Ready Mode.
2Press the “Peripheral Test ” button on the test tool. The LEDs
on the test tool will sequence.
If the  “PASS” LED lights, the test was successful, indicating that
communication with the printer ’s IR port is functioning normally.
LBTest Connect Pass
Peripheral Test Computer
Test
Test Modes
PCL Printer
PostScript Printer
Energy Detect
Test Frame
switches
IR Diodes
Figure B-8 Infrared Test Tool
LaserJet 5/5M/5N Printer  B-39 
						

							On HP Laser-Jet printers, a self-test page will be initiated by the
test.
If the “TEST ” LED goes out and the “ PASS” LED  fails to light,
the printer ’s IR port is not functioning correctly; check the
operator ’s instructions included with the IR test tool.
To test the host computer:
1Place the test tool on a table in front of the PC ’s IR port.
2Press the  “computer Test button.  The test tool will sequence
the LEDs.
If the  “PASS”  LED  light, the test was successful, indicating that
communication with the printer’ s IR port is functioning normally.
If the  “TEST ” LED goes out and the “ PASS” LED fails to light,
the host ’s IR port is not functioning correctly.
B-40 LaserJet 5/5M/5N Printer 
						

							Infrared Port Not Responding
SituationSolution
The connection cannot be
established or the transmission
seems to be taking longer than
usual. Make sure the device you are
using is IrDA-compliant; look for
an IrDA symbol on the device or
refer to the manual for the device
for IrDA specifications.
Make sure  that the operating
system on your computer
includes an IR driver and your
application uses a HP LaserJet
5/5M/5N compatible printer
driver.
Make sure you have positioned
the device within the range of
operation and that no objects,
such as a finger, paper, books,
or bright light, are interfering with
the connection.  Also make sure
the two IR ports are clean (free
from dirt and grease.)
Bright light of any kind (sunlight,
incandescent light, fluorescent
light, or light from an infrared
remote control, such as those
used for TVs and VCRs) shining
directly into one of the IR ports
may cause interference.
Position the device closer to the
printer
’s IR pod.
Table B-21 Solutions for Infrared Not Responding
LaserJet 5/5M/5N Printer  B-41 
						

							SituationSolution
The printer prints only part of a
page or document. The connection has been broken
during transmission. If you move
the portable device during
transmission, the connection can
be broken.  IrDA-compliant
devices are designed to recover
from temporary connection
interruptions.  Re-establish the
connection (depending on the
device you are using, you can
have anywhere from 3 to 20
seconds to re-establish the
connection)
The print job has been properly
sent to the printer, but the printer
will not print. If the connection is broken
before the entire print job has
been transmitted to the printer
(printing has not yet started), the
printer may not print any of the
job.  If the Data light is on, press
the 
Job Cancel  button to clear
the printer ’s memory.  Then,
position the device within the
range of operation, and print the
job again.
The IR status light turns off
during transmission. The connection may have been
broken  If the Data light is on,
press the Job Canel  button to
clear the printer ’s memory.
Then, position the device within
the range of operation, and print
the job again.
B-42 LaserJet 5/5M/5N Printer 
						

							Index
!
12 PRINTER OPEN 7-18 
13 PAPER JAM 7-20
14 NO EP CART 7-25 
16 TONER LOW 4-10, 7-25 
21 PRINT OVERRUN 3-53 
41.1 ERROR 7-28 
41.2 ERROR 7-28, 7-31 
41.3 ERROR 7-28 
41.4 ERROR 7-28 
41.5 ERROR 7-28 
50 service error 7-29 
51 ERROR Message 7-31 
52 ERROR 7-32 
57 SERVICE 7-33 
58 SERVICE fan failure 7-34 
A
Accessory Parts 8-33 
adjustmentleading edge registration 1-35 
advanced functions 3-33 
ASAP (Automated Support Access
Program) 1-12 
ASCII PJL Escape Sequence 3-19 
assemblies removal 6-15 
Assist Line (HP CSC) 1-13 
assistance, technical 1-12 
AUDIO TIPS, HP 1-13 
autoexec.bat 3-31, 7-53 
B
background scatter 7-35, 7-47 
basic sequence of operation 5-33 
baud rate 3-33 
beam detect signal weak (41.2) 7-27 
big data B-28 
black pages 7-35  with horizontal stripes 7-35 
blank display 7-12 
button, test print 3-29 
C
cable pinouts 3-35 
CDRH laser safety 1-8 
changing the display language 3-28  check
MP tray empty sensor 7-17 
sw601 7-19 
checkpoints, service 4-3 
CIC (Customer Information Centers)
1-13 
cleaning brush uses 4-16 
cleaning station, drum 5-18 
clearable warnings 7-10 
CLEARING MEMORY 7-A 
CLOSE PRINTER COVER 7-A 
cold reset 3-23, B-27 
communications checks 7-52, 7-54 
component locations 7-59 
CompuServe Forum, HP 1-13 
conditioning station, drum 5-19 
configuration AUTOEXEC.BAT 7-53 
communications check 7-52 
system 3-31 
test message 7-52 
configuration menu B-19 
contact plate, high voltage  6-62 
contactor removal 6-62 
CONTINUOUS TEST 7-A 
control panel 3-2, 3-6, B-10  flashing indicators 3-2 
overlay 3-28
removal 6-23 
security 3-18 
control panel keys B-11 
covers removal 6-4 
Customer Support Center Europe (ECSC) 1-14 
U.S. (CSC) 1-13 
customization variable 3-22 
D
data flow, serial 5-4 
DATA RECEIVED 7-A 
datecode 3-26 
DB-25 3-37  cable pinouts 3-37 
DB-9 3-35  cable pinouts 3-35 
DC Controller 5-2  installation 6-35 
loads 5-3 
removal 6-33 
system 5-1 
DC power supply 5-2 
Index-1 
						

							defect Ruler 7-67 
defect template 7-67 
developing station, drum 5-22 
DHHS laser safety 1-8 
Diagnostics B-28 
diagrams, timing 5-34
disassembly, fuser 6-47 
display language, changing 3-28, B-30 
distorted print 7-35, 7-42 
documentation, related 1-7, B-8 
DOS commandsserial 7-53 
DOS Utilities 3-42 
Drum cleaning station 5-18 
conditioning station 5-19 
developing station 5-22 
photosensitive 5-17
Rotation Check 7-50 
sensitivity 5-17 
transferring station 5-24 
writing station 5-20 
dtr polarity 3-34 
dtr/dsr 3-34 
Duplex components A-14 
covers A-9 
electrical block diagram A-5 
installation A-6 
overview A-2 
printing A-3 
removal and replacement A-8 
E
EconoMode 3-16, 4-6 
ENGINE TEST 7-A 
envelope feeder 5-4  installation 3-49 
envelopes 2-6 
error infrared B-41 
Error Map for LJ 5 7-A - 7-D 
Error messages
MP/PC/LC LOAD 7-13 
troubleshooting 7-2 
ESD 6-1 
European Customer Support Center
(ECSC) 1-14 
European formatter installation 3-22 
exhaust fan motor 5-10 
Explorer 3-33 
F
FACTORY DEFAULTS 7-A 
faint print 7-35 
faint print  7-38  fan
checks 7-34 
failure 7-34 
motor signals 5-10 
removal 6-39 
faulty registration 7-39 
fax information service (HP FIRST)
1-12 
feed guide assembly 6-62  replacing 6-68 
Finland laser safety 1-10, B-9 
firmware date code 3-26 
flash SIMM B-29 
flashing indicators 3-2 
FM1 7-34  exhaust fan motor 5-10 
font door cover 6-10 
formatter PCA removal 6-29 
pca, functional overview 5-12 
system 5-12 
formatter cage removal 6-27 
formatter system 5-1 
functional check
half self-test 7-49 
laser/scanner assembly 7-32 
lower cassette 7-24 
main motor 7-33 
PS2 7-17 
functional overview, formatter 5-12 
functional test, pickup motor (m2) 7-23 
fuser assembly configuration 6-48 
life expectancy 4-2 
parts location 6-48 
PM 4-3 
removal 6-22 
thermoswitch removal 6-55 
fuser bulb replacement 1-47 
fuser disassembly 6-47 
fuser malfunction 7-29 
fusing process 5-25 
station 5-25 
temperature 5-2 
fusing roller heat lamp removal 6-49 
G
gear assembly removal 6-38 
H
half self-test functional check 7-49 
handshaking 3-34 
hardware 6-2  descriptions 6-3 
heat lamp 6-49 
Index-2 
						

							high voltagecontact assembly 6-68 
contact plate 6-62 
contactor removal 6-62 
contactor/paper guide removal 6-62 
High Voltage Power Supply
assembly 7-51 
checks 7-51 
removal 6-21 
troubleshooting 7-51 
high voltage system 5-2 
HP ASAP (Automated Support Access Program) 1-12 
HP AUDIO TIPS 1-13 
HP FIRST (Fax Information Retrieval
Support Technology) 1-12 
I
I/O buffering 3-15 
information 3-26 
image defect summary 7-35 
formation system 5-1, 5-16 
formation troubleshooting 7-49 
skew 7-35 
image skew 7-43 
improperly sized image 7-35, 7-44 
INCOMPATIBLE ENVELOPE FEEDER 7-A 
INCOMPATIBLE TRAY 3 7-B 
indicators 3-2 
information, related 1-7, B-8 
infrared operation B-37 
printing B-36 
software B-34 
status light B-36 
test tool B-39 
troubleshooting B-38, B-41 
using to print B-36 
infrared communication B-34 
Infrared, test tool B-38 
initial rotation period 5-38 
INITIALIZING 7-B 
input area paper jams 7-20 
input feed roller, PM 4-3 
Input/Registration Sensor Check 7-22 
INSTALL TONE CARTRIDGE 7-B 
INSTALL TRAY 2 7-B 
installation
DC controller 6-35 
installing printer drivers 3-41 
SIMM 3-51 
the control panel overlay 3-28 
the envelope feeder 3-49 
the optional lower cassette 3-44  the toner cartridge 4-7 
the transfer roller 4-16 
INSUFFICIENT MEMORY 7-B 
insufficient memory messages 7-10 
interconnect PCA removal 6-69 
interface troubleshooting 7-52 
interfaces DOS commands, parallel 3-31 
parallel DOS commands 3-31 
IrDA, print using B-36 
J
J09, fan connector 7-34 
J131 7-33 
J211, main motor connector 7-33 
J601 7-23 
J602 7-23 
J701 7-23 
J702
location 5-5 
paper control PCA 5-5 
J704 location 5-5 
paper control PCA 5-5 
jam, detection, paper 5-11 
job menu B-18 
L
label, laser safety 1-8 
labels
adhesive 2-5 
arrangement 2-5 
construction 2-5 
curl 2-5 
guidelines 2-5 
language, changing the display 3-28 
large print voids 7-35, 7-46 
laser and scanner drive 5-2 
laser safety CDRH 1-8 
DHHS 1-8 
Finland 1-10, B-9 
label 1-8 
laser/scanner assembly functional
checks 7-32 
LaserJet Explorer 3-33 
last rotation period 5-42 
LC LOAD message 7-13 
leading edge registration adjustment 6-35 
left side cover removal 6-7 
life expectancy fuser assembly 4-2 
rollers 4-2 
separation pad 4-2 
toner cartridge 4-2 
LJ 5 Printer  B-1 - B-42 
Index-3 
						

							lower cassetteassemblies removal 6-44 
assembly 5-4 
drive motor (M3) 5-10 
functional check 7-24 
installing 3-44 
paper loading 3-45 
pickup motor 7-24 
pickup motor removal 6-45 
sensor board removal 6-44
tray switches 5-9 
LPT1 3-31 
M
M1, main motor 5-10 
M2 functional test 7-23 
M2, paper feed motor 5-10 
m3 lower cassette drive motor 5-10 
lower cassette pickup motor 7-24 
M4, envelope feeder drive motor 5-10
M5, scanner motor 5-11 
machine status 5-2 
Macintosh 3-18 
main motor
(M1) 5-10 
assembly removal 6-37
drive 5-2 
drive system 5-10 
failure 7-33 
functional checks 7-33 
functional tests 7-33 
signals 5-10 
maintenance 4-1  procedures 4-11 
malfunction, fuser 7-29 
MANUALLY FEED 7-B 
measuring d.c. voltages 7-69 
media specifications 2-3 
memory 3-53  size 3-26 
memory configuration menu B-21 
Memory Enhancement technology
(MEt) 3-17 
MEMORY FULL 7-B
MEMORY LOW 7-B 
MEMORY SETTINGS CHANGED 7-B 
memory-induced messages 7-10 
message, TONER LOW 4-10 
microswitch (SW603) 7-15 
(SW604) 7-15 
(SW605) 7-15 
signals 5-8 
MIO 3-26, 3-40, 7-56  menus 3-26 
MODE command 3-31  MODE statement 7-53 
model number 1-3, B-5
motor locations 7-61 
MP Door Removal 6-12 
MP pick-up roller clutch solenoid
(SL2) 5-5 
MP rollers, PM 4-3 
MP tray empty sensor check 7-17 
paper end sensor functional test 7-44 
paper path 5-29 
paper pickup rollers removal 4-11 
removal 6-13 
separation pad removal 4-11 
MP/PC/LC LOAD Message 7-13 
MS-DOS System configuration 3-31 
version 4 and above 7-53 
version 4 and below 7-53 
MSDS, phone number 1-11 
multifeed (41.3) 7-28 
N
networks, security 3-18 
noisy vertical sync signal (41.1) 7-28 
non-HP toner cartridge 4-9 
Novell Networks, HP JetAdmin Utility 3-19 
number
model 1-3, B-5 
Serial 1-3, B-5 
NVRAM Init B-31 
O
OFFLINE 7-B 
operation basic sequence of 5-33 
standard printer 5-33 
options, installed status 3-26 
ordering documentation 1-7, B-8 
packaging material 3-43 
output area paper jams 7-20 
output assembly removal 6-41 
overhead transparencies 2-6 
ozone, safety 1-11 
P
pacing 3-34 
packaging material part no. 3-43 
packaging the printer 3-43 
page count 3-24, 3-26  setting the 3-21 
page protect 3-13 
paper control pca removal 6-59 
paper exit sensor removal 6-42 
Index-4