HP laserjet 5p, laserjet 6p schematic

Service Supplement
HP LaserJet 5P / 5MP / 6P / 6MP Printer (C3150A / C3155A / C3980A / C3982A)
Service Supplement
© Copyright Hewlett­Packard Company 1995
All Rights Reserved. Repro­duction, adaptation, or translation without prior written permission is pro­hibited, except as allowed under the copyright laws.
Publication number C3150-90002
First edition, May 1995 Printed in USA
Warranty
The information contained in this document is subject to change without notice.
Hewlett-Packard makes no warranty of any kind with regard to this mate­rial, including, but not limited to, the implied warranties or merchant­ability and fitness for a particular purpose.
Hewlett-Packard shall not be liable for errors con­tained herein or for inciden­tal or consequential damaged in connection with the furnishing, per­formance, or use of this ma­terial.
WARNING
Electrical Shock Hazard
To avoid electrical shock, use only supplied power cords and connect only to properly grounded (3-hole) wall outlets.
Hewlett-Packard Company 11311 Chinden Boulevard Boise, Idaho 83714
Conventions
This manual uses the following conventions: Color is used to em ph asize items which are impor t ant to the mate r i al
under discussion. The names of major pr inte r p ar ts and ass emblies are Capitalized. Bold is used for emphasis, p ar ticularly in situations whe re italic type
would be confusing. Italic type is used to indicate relate d doc uments or emphas is. COMPUTER type indicates text as seen on a computer monitor.
Note
CAUTION
WARNING!
Notes contain important information set off from the text.
Caution messages alert you to the possibility of damage to equipme nt or los s of dat a.
Warning messages alert you to the possibility of personal injury.
i
ii
Contents
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Product Information . . . . . . . . . . . . . . . . . . . . . . 3
Key Printer Locations and Parts. . . . . . . . . . . . . . . . 4
Model and Serial Numbers . . . . . . . . . . . . . . . . . . 5
Product Specifications . . . . . . . . . . . . . . . . . . . . 6
Documentation an d Softwar e . . . . . . . . . . . . . . . . 8
Documentation . . . . . . . . . . . . . . . . . . . . . . . . . 8
Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
New Product Features . . . . . . . . . . . . . . . . . . . . . 10
The HP LaserJet 5P/5MP Status Panel . . . . . . . . . . . 10
The GO and RESET Buttons . . . . . . . . . . . . . . . . . 10
The Status Lights . . . . . . . . . . . . . . . . . . . . . . . 11
Common LED patterns . . . . . . . . . . . . . . . . . . . . 12
Paper Movement Overview . . . . . . . . . . . . . . . . . . 16
Infrared Comm un ication . . . . . . . . . . . . . . . . . . . 18
To Print Using the Infrared Port . . . . . . . . . . . . . . . 20
Troubleshooting IR Printing Pr oble ms . . . . . . . . . . . . 22
Interface Connections . . . . . . . . . . . . . . . . . . . . . 25
The Parallel Printer Interfaces . . . . . . . . . . . . . . . . 26
Resource Saving . . . . . . . . . . . . . . . . . . . . . . . . 27
I/O Buffering . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Service Mode, PJ L De faults . . . . . . . . . . . . . . . . . 30
Test Pages and Resets . . . . . . . . . . . . . . . . . . . . . 32
Printing a Self-Test Page . . . . . . . . . . . . . . . . . . . 33
Life Expectancy of Con sum a ble s . . . . . . . . . . . . . . 36
Removal and Replacement . . . . . . . . . . . . . . . . . . 37
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Required Tools . . . . . . . . . . . . . . . . . . . . . . . . . 38
Removing the Power Door . . . . . . . . . . . . . . . . . . . 39
Removing the I/O Cover . . . . . . . . . . . . . . . . . . . . 39
Removing the Left Side Cover . . . . . . . . . . . . . . . . . 40
Removing the Top Cover . . . . . . . . . . . . . . . . . . . . 41
Removing the Tray 1 Pickup Assembly . . . . . . . . . . . . 44
Removing the Formatter Board and Shield . . . . . . . . . 47
Removing the Fusing Assembly . . . . . . . . . . . . . . . . 50
Removing the DC Controller Assemblies . . . . . . . . . . . 51
Troubleshootin g . . . . . . . . . . . . . . . . . . . . . . . . 55
Continuable Data Error Light Patterns . . . . . . . . . . . 56
Error 53 -- Memory/SIMM Errors . . . . . . . . . . . . . . . 58
Fatal/Service Errors . . . . . . . . . . . . . . . . . . . . . . 60
Infrared Por t Not Respon ding . . . . . . . . . . . . . . . . . 65
Using the Infrared Te st Tool . . . . . . . . . . . . . . . . . 66
Parts and Diagrams . . . . . . . . . . . . . . . . . . . . . . 68
Ordering Parts . . . . . . . . . . . . . . . . . . . . . . . . 68
Ordering Consumables . . . . . . . . . . . . . . . . . . . . 69
iii
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
iv
HP LaserJet 5P Printer Service Supplement
HP LaserJet 5P Printer Service Supplement
Overview
Overview
The HP LaserJet 5P and 5MP pri n ters (HP Pr o d uc t Numbe rs C3150A and C3155A) have many service and repair processes in common with their prede cessor s , the HP LaserJe t 4L/4ML and 4P/4MP printers. These processes are documented in the
Combined Service Manual for the HP LaserJet 4L/4ML (C2003A/C2015A) HP LaserJet 4P/4MP (C2005A/C2040A). The
purpose of this app e nd ix is to pro v ide supplemental ser vic e information that is unique to the HP LaserJet 5P and 5MP printers.
2
HP LaserJet 5P Printer Service Supplement
Product Information
Product Information
Printer Features
Features
Print Speed 6 PPM Text & Graphics Resolution 600 dpi; plus Resolution Enhancement Technology (REt) Printer Languages
HP LaserJet 5P HP LaserJet 5MP
Monthly Usage (pages) Up to 12,000 Memory: 2MByte on-board standard memory Tray 1 Capacity 100 Tray 2 Capacity 250 Output Tray capacity 100 Internal Typefaces
HP LaserJet 5P LaserJet 5MP Standard Interfaces 2 Parallel (B connector, C connector)
Power Control Power switch NVRAM Yes Status Panel 2 Buttons
Economode (toner saving) yes Min. Paper Size
(using flat paper path)
1
SIMM includes 1 MByte additional memory.
Enhanced PCL 5 PostScript Level 2
Enhanced PCL 5
45 PCL
45 PCL, 35 PS
1 LocalTalk 1 SIR
5 LEDs
3 x 5 inch (76 x 127mm)
1
3
HP LaserJet 5P Printer Service Supplement
Product Information
Key Printer Locations and Parts.
Figure 1 Front View
1. Status Panel 5. Infrared Port and Status Light
2. Top Output Tray 6. Removable Side Panel
3. Tray 1 - MultiPurpose Tray 7. Interface Cable Door
4. Tray 2 - 250-sheet Paper Cassette
Figure 2 Rear View
1. Top Cover Release Button 3. Serial Number Label
2. Rear Output Tray 4. Power Cable Door
5. On/Off Button
4
HP LaserJet 5P Printer Service Supplement
Product Information
Model and Serial Numbers
The model number and serial numbe rs ar e liste d on ident ific at io n labels located on the rear of the printer. The model number is alphanumeric, such as C3150A for the HP LaserJet 5P printer and C3155A for the HP LaserJet 5MP printer.
The serial number contains information about the Country of Origin, the Revision Le ve l, t he Prod uc t io n Code , and pr oduction number of the printer.
The rear labels also contain power rating and regulatory information as show n in Figur e 3.
Figure 3 Sample Model and Serial Number Labels
5
HP LaserJet 5P Printer Service Supplement
Product Specifications
Product Specifications
Dimensions
Width 15.79 in. (401 mm) Depth 17.38 in. (441.7mm) Height 7.92 in. (201.1mm) Weight 15.4 lbs. (7 kg)
Figure 4. Location Space Requirements
6
HP LaserJet 5P Printer Service Supplement
Product Specifications
Electrical Specifications
Power Requirements 100/120V (+/- 10%) 50/60Hz (+/- 2Hz)
Power Consumption (typical for HP LaserJet 5P and HP LaserJet 5MP)
Minimum recommended circuit capacity
127 Volts NOM During printing - 165 W (average) During printing - 165 W (average)
During standby – 5W (instant power save) During power save mode - 5 W
4 Amps 1.8 Amps
220/240V (+/- 10%) 50 Hz (+/- 2Hz)
During standby – 5W (instant power save) During power save mode - 5 W
Environmental Specifications
Item Operating Printing Storage/Standby
Temperature (printer and toner cartridge)
Relative humidity 10% to 80% 10% to 90%
59° to 89° F (15° to 32.5° C) -4° to 104° F (-20° to 40° C)
Acoustic Emissions (Per ISO 9296)
Operator Position Bystander (1m) Sound Power
Printing L Power Save* L
*In this mode, the printer is essentially quiet.
52dB(A) L
pAm
<22dB(A) L
pAm
46dB(A) L
pAm
<22dB(A) L
pAm
6.0 bels(A)
WAd
<3.6 bels(A)
WAd
7
HP LaserJet 5P Printer Service Supplement
Documentation and Software
Documentation and Software
Documentation
You can order the documents listed below. There is a charge for some document s.
Table 1. Related Documentation
Title Part Number
The PCL/PJL Technical Reference Package contains the following
5961-0601
documents* PCL5 Printer Language Technical Reference Manual.
Explains the PCL 5 printer language for experienced users and programmers.
Printer Job Language Technical Reference Manual. Explains HP’s Printer Job Language (PJL) for experienced users and programmers.
PCL/PJL Technical Quick Reference Guide. PCL Comparison Guide.
Describes the different implementation of commands and extensions across the printer family supporting PJL and PCL 5.
HP LaserJet 5P/5MP Printer User’s Manual C3150-90901 HP LaserJet 5MP Macintosh Notes* (included with HPLaserJet
C3155-90901
5MP Printer and optional Adobe PostScript Level 2 SIMM) HP LaserJet Printer Family Paper Specification Guide* 5002-1801
* This item must be ordered through HP Parts Direct Ordering, (800) 227-
8164. Outside the U.S., see the ordering information in "Parts and Diagrams" later in this chapter.
8
HP LaserJet 5P Printer Service Supplement
Documentation and Sof tw a re
Software
The following softwar e drive r d isk ettes are ship p e d with the C3150A HP LaserJet 5P printer:
The HP LaserJet 5P DOS Utilities and DOS Printer Drivers
diskette. The DOS utilities include a Status Monitor and Remote Control Panel. The DOS printer drive rs inc lud e WordPerfect (versions 5.1, 5.1+, and 6.0) and Lotus 1-2-3 (versions 2.3, 2.4, 3.1 and 3.4).
The HP LaserJet Printing System for Microsoft Windows 3.1 and 3.11 contains the PCL drivers and the HP Font Sm ar t
utility for font management.
The following softwar e drive r d isk ettes are ship p e d with the C3155A HP LaserJet 5MP printer:
The HP LaserJet 5MP Printer Software for Macintosh. Supports
System 6.07 to 7.5.
The PostScript Printer Software for Windows 3.1 and 3.11
includes the PostScript drivers and the HP FontSmart utility for font management.
9
HP LaserJet 5P Printer Service Supplement
New Product Features
New Product Features
The HP LaserJe t 5P/ 5MP Status Panel
This HP LaserJet printer has been des igne d to be contr olle d mainly by software. However, some simple functions are also available from the status panel. You also receive status information about the operation of the IrD A- comp atible inf rar ed (IR) port from the status light just above the port (for more information, see “To Pr int Us ing the In fr ar ed Po rt, ” later in this appendix).
1
2
Figure 5 Status Panel Button s and Ligh t s
1. RESET button 5. DATA status light
2. ERROR status light 6. READY status light
3. TRAY 1 status light 7. GO button
4. TRAY 2 status light 8. IR port status light
The Status Panel consists of two buttons you use to complete certain tasks and five status lights that indicate the status of the printer (see Figure 5).
The GO and RESET Buttons
The printer has two button s: GO an d RESET.
10
HP LaserJet 5P Printer Service Supplement
New Product Features
Pressing the GO bu tton :
Tells the printer to resume printin g.
Prints a demo page. The printer must be in Ready Mode (the
green Ready light on steady).
Prints a self-test page when pressed simultaneou sly wit h the
RESET button. The printe r m u st be in Read y Mo d e (t he gre en Ready light on steady).
Pressin g the RE S E T b ut to n:
Clears incomple te p rint jo b s fro m the p r inte r’ s mem o r y.
Clears errors.
Removes all temporary fonts and macros.
Returns all printer settings to the default values that you
selected.
The Status Lights
There are five Status Panel lights on the printer :
ERROR
TRAY 1
TRAY 2
DATA
READY
These lights indicate the curr ent st atu s of the p rinter by displaying an amber or a green hue and flashing individually or sequentially as a group (cascading).
The status light above the IR port indicates the cur rent status of the IR port by displaying a green hue. This status light comes on only when the IR port is being used—the Statu s Pane l lights operate the same for the IR port as they do for any other port on the printer.
ERROR (amber)
Indicates an error condition, such as a pap er jam, missing toner cartrid ge , or the p r inte r ’ s top c ove r is op e n.
11
HP LaserJet 5P Printer Service Supplement
New Product Features
TRAY 1 (amber)
Tray 1 (the MP tray) is empty. Add paper to Tray 1. When the Tray 1 light is flashing, the printer is waiting for paper to be manually fed into Tray 1. On ce you hav e inser ted the paper , you must press the G O butt on to fee d the paper.
TRAY 2 (amber)
Tray 2 (the Paper Cassette) is empty. Add pape r to Tray 2.
DATA (gree n)
When the Data light is on, the printer is printing. When the Ready light and the Data light are both on, the printer still has unprinted data in its memory. Either press GO to print the remaining data, or press RESET to clear the d ata fr om the pr i n ter’s me mo r y .
READY (green)
The printer is in Ready Mo de whe n th e Read y light is on. If the light is flashing, the printer is currently receiving data or in the process of printing.
IR Port Status Light (green)
If this light is on, it indic at es that an infr ar e d (I R) con ne c tio n has been established.
Common LED patterns
The chart following shows the light patterns for normal HP LaserJet 5P/5MP printer states.
12
HP LaserJet 5P Printer Service Supplement
New Product Features
Light Pattern Description
The printer is in Ready Mode and is ready to print. Press the GO button to print a demo page. Press the GO and RESET buttons to print a self-test page.
The printer has received data. If the Ready light is flashing, the printer is processing the data—wait for the next page to be printed. If the Data light and the Ready light are both on for an extended period of time (the Ready light does not begin to flash), press the GO button to print the next page. A document or page may take a long time to print if, for example, the document or page contains complex text or graphics.
The printer is warming up or resetting after you have pressed the RESET button. The lights on the Status Panel “cascade” (each light turns on and off sequentially) until the printer is ready to print.
Tray 1 (the MP Tray) is empty. Add paper to the tray. If the Tray 1 light is flas hing, the printer is waiting for paper to be manually fed into Tray 1. Once you have inserted the paper, you must press the GO button to feed the paper.
13
HP LaserJet 5P Printer Service Supplement
New Product Features
Light Pattern Description
Tray 2 (the Paper Cassette) is empty. Add paper to the tray.
A data error has occurred. Press the GO button to continue printing (some data may be lost). For more information, see “Data Error Light Patterns,” later in this appendix.
14
A SIMM error has occurred. Make sure your SIMM is installed correctly. Replace the SIMM that caused the error. Or press the GO button on the printer to continue without configuring the SIMM that caused the error. If the SIMM has more than one bank of memory, the good banks will be automatically configured.
A recoverable error has occurred, such as a paper jam, the top cover is open, or the toner cartridge is missing.
HP LaserJet 5P Printer Service Supplement
New Product Features
Light Pattern Description
A fatal error has occurred. Turn the printer off and then back on. If the same light pattern reappears, turn the printer off again and leave it off for about 10 minutes, then turn it back on. If the same light pattern reappears. refer to the discussion of Fatal Errors in "Troubleshooting."
When the IR port status light is on, a connection has been established. If you are printing to the IR port and the status light does not come on, make sure the printer is in Ready Mode and that the IR port you are printing from is within range of operation and is IrDA­compliant. If you continue to have trouble printing, refer to the “Infrared Port Not Responding” table, later in this section.
15
HP LaserJet 5P Printer Service Supplement
New Product Features
Paper Movement Ove rview
The paper feed sys tem pic ks print media aut om atically from the paper cassette or accepts it from the manual feed slot and delivers it to the image formation system at precisely the right time. The system then feeds the media to the fusing station, and deliver s the finished product to the output posit io n, either the face-down output tray on top of the printer, or through the face-up delivery slot at the rear of the printer. The output path is user-selectable by opening the rear output tray.
Figure 6 shows the possible paper paths and lo catio ns of the various soleno ids , p hoto s en sor s and r oller s .
16
HP LaserJet 5P Printer Service Supplement
New Product Features
DC Controller PCA
PS 3
Figure 6 HP LaserJet 5P Pri nter Paper Path
PS1 Input Paper Sensor Input Paper Sensor (PS1) Positions: PS2 Tray 2 Paper Out Sensor A = Manual Feed Sense Position PS3 Exit Paper Sensor B = Registration Sense Position PS4 Winding Paper Sensor C = TOP Sense Position PS5 Tray 1 Paper Out Sensor SL1 Tray 2 Solenoid
SL2 Tray 1 Solenoid
17
HP LaserJet 5P Printer Service Supplement
New Product Features
Infrared Communication
The HP LaserJet 5P and 5MP pri n ters ar e equ ipp e d with a n Infrared Datalink Association (IrDA) compliant port. The IrDA specification allows "wire less " tran smis sio n of pr int data be tw een a wide variety of hosts (primary) and peripheral (secondary) devices. A primary device -- suc h as a PC or laptop computer -- is capable of reading and writing data to anoth er primar y devic e or writing to a secondary device, such as a printe r. Secondar y dev ice s are read-only; they can n ot initiat e its own c ommun ic atio n, and ca n only respond to a host command when properly add ressed.
The IrDA protocol uses a transceiver chip in both devices to send and receive data packets. The packets are checked for validity, and a response is sent by the secondary device indicating whe th er the packets were complete or in error.
The IrDA protocol is contained in three layers:
The physical electronics are the hardware elements in each
device for sending and receiving the data.
The Link Access Protocol (LAP) layer controls the physical
layer, packetizes/unpacketizes data, and sets transmission rates.
The Link Management Protocol (LMP) layer routes data to and
from the host operating system (DOS/Windows). The data flow is shown in Figure 7. The LAP and LMP layers can reside in either firmware, softwar e,
or a combination of both. There are different LAP and LMP protocols for primary and secondary devices.
The HP LaserJet 5P printe r has th e comple t e second ar y pro toco l, and any host trying to communicate via the infrared (IR) port must have the complete primary protocol installed. The primary protocol
software is the responsibility of the host supplier. It is not provided by Hewlett-Packard Company with the printer.
IrDA communications can be obtained either via an inte rn al IR port or an external IR accessory. Several manufacturers offer complete accessory upgrades for both host and peripheral devices.
18
HP LaserJet 5P Printer Service Supplement
New Product Features
primary
device
Application
GDI DDI
Ptr DVR
IRLMP
IRLAP
IR Physical
Transmitter
Receiver
ASCII Data Windows
System
Standard Windows LJ Printer Driver (SW)
IR Redirector (Software)
IR Driver Packetizes Data (SW or FW)
Protocol Serializer IR Chip
Data Packets & Queries
Responses
Formatter
I/O Buffer
IRLMP
IRLAP
IR Physical
Receiver
Transmitter
secondary
device
ASCII to Raster Data
ASCII Data Buffer
Unpacks Data
Checks Packets Protocol
Deserializer IR Chip
Figure 7. IR Data Flow.
System Re quiremen ts
Hardware
Both the primary and secondary devices must be equipp ed with
an IrDA-compliant IR component. Older, non-IrDA­compliant devices may not be compatible with the HP Lase rJe t 5P/MP printers.
Software
The primary device must be loaded duri n g boo t-u p wit h sof tware
provided by the manufacturer for infrared operation.
The primary device must be properly c onf igur e d with an inf r ar ed
COM port, IRQ level, and base address value .
The infrared port must be inst alle d and selected in the Printe r s
section of the Windows Cont rol Panel.
19
HP LaserJet 5P Printer Service Supplement
New Product Features
To Print Us ing the Infrare d Port
The infrared (IR) port on your HP LaserJe t 5P or 5MP print er is located on the lower front left corner of the printer (Figure 8 ). This port is compliant with the specifications determine d by the Infrared Data Association (IrDA). Just above the port is a status light that indicates when the port is activated. To use the IR port, you need to use a portable device that also in clud es an IrDA-compliant IR port and be within the range of operatio n (see Figure 9).
Figure 8 IrDA Port Location
The IR port is compatible with a wide variety of IrDA-compliant portable devices; however, the method for printing will vary depending on the type of device and the operating system in use. Refer to the instruction manual for your portable equipment for specific instructions on printing from that device.
The IR port works by receiving data similarly to a serial port, however, without a cable and operates at speeds of up to 115 k bits per second. When the IR connection is establis he d, the status light comes on. If the conn e ctio n is br o ken or whe n the pr int jo b is complete, the status light goes off.
1. Make sure the printer is in Ready Mod e (the Ready light is on).
2. Align your lap top com pu ter (or o ther p or table equipment) that
is equipped with an IrDA-compliant IR port within 3 feet
20
HP LaserJet 5P Printer Service Supplement
New Product Features
(1 m) of the IR port on the printer and at an a n gle of ±15 degrees to ensure printing (Figure 9).
3. Send the print jo b. The st atus light above the IR port turns o n (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 wit h the port on the printer, resend the print job and stay within the range of operation during printing.
4. If you have to move the device, for example, to add paper, make sure you stay within the range of operatio n to maintain t he 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 tu rns back on.
5. The 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 piec e of paper, or even direct sunlight. In this case, the job needs to be reprinted.
30°
1 Meter3 feet
Figure 9 IRDA Port ranges
21
HP LaserJet 5P Printer Service Supplement
New Product Features
If you still have problems printing, make sure you are using a n IrDA-compliant device and proper software and have selected the proper port for printing. See "Infrared Port Not Responding" on page 65.
Note
The IrDA standard for infrared communications represents an emerging technology. Older non-IrDA-c om pliant p or table devices may not be compatible with your HP LaserJet 5P/5MP 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 Probl em s
IR printing problems may be caused by any of the several system components o r by lack of proper config ur at ion . The f ollo w in g checklist will help deter mine the sour ce of th e problem.
6. Verify 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 ±15 degrees from direct center.
7. Verify the host PC or laptop and the printer are IrDA-compliant and have the necessary hardware components for IR communic ation.
8. Verify the IR software has been loaded on the primary device. (This is system software and sho uld be available f rom the PC manufacturer.)
9. Verify the host PC or laptop is properly conf igur ed. Chec k th e port assignment, the IRQ level, and the base address valu e. Check both the DOS AU TOEX EC. BAT and CONFI G. SYS files , and the Windows system configur atio n.
22
HP LaserJet 5P Printer Service Supplement
New Product Features
If all these elements are properly installed and configur ed , use th e IR test tool to test the IrDA protocol transmission and de vice operation. This tool for troubles ho oting IR commu nic atio n problems, show n in Figure 10, has been developed by Genoa Technolo gy, Inc. , in coop e rat ion with He wlett-Packar d. The par t 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.
IR Diodes
Connect Pass
Test
LB
Peripheral
Test
PCL Printer
PostScript Printer
Energy Detect
Test Frame
Computer
Test
Test Modes
switches
Figure 10 Infrared Test Tool
To test the peripheral device:
1. Put the HP LaserJet 5P in Ready Mode.
2. Press the "Peripheral Test" button on the test tool. The LEDs
on the test tool will sequence.
23
Loading...
+ 184 hidden pages