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HP DOC

LaserJetSeries!1PriiTter [HP 33440)

and LaserJetillPrinter(HP33449) CombinedServiceManual

HP Part No. 33449-90906

Printed in USA

First Edition - February 1990

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‘,.	,,

Notice

HEWLETT-PAC-		MA~S NO WARRAN~ OF ~	~ND ~TH REGARD TO T~S
~TERM,	INCLUDING, BUT NOT LIMITED TO, THE IMPLIED W~TIES			OF
MERCMTABILI~		AND FIT~SS FOR A PARTICULAR PURPOSE. Hewlett-Packard shall
not be liable for errors contained herein or for incidenti			consequential damages in connection
with the furnishing, performance, or use of this material.
This document contins		proprietary information which is protected by copyright. Ml rights are

resewed. No pati of this document may be photocopied, reproduced, or translated to another language without the prior written consent of Hewleti-Packard Company.

The information contined in this document is subject to change without notice.

,*

@ Copyright 1990 Hewleti-Packard Company

HP 33440/HP 33449 COMBINED PRINTER SERVICE MANUAL

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Februaw 1990

33W9-90906

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Hewlti-Packard Company

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P.O. Box 15

Boise, Idaho 83707-99W

Printing History

This manual was created using HP Tagflectra sotiare on an HP Vectra Personal Computer. The body ted is printed in Centu~ Schoolbook fonts, and chapter and section heads are printed in Helvetica fonts. The camera-ready copy was printed on an HP LaserJet III printer and reproduced using standard offset printing.

Hrst Edition - Februa~ 1990

Trademark credits

PCL is a registered trademark of Hewleti-Packard Company. Resolution Enhancement is a trademark of Hewlett-Packard Company. PostScript is a registered trademark of Adobe

Systems, Inc. in the U.S. and other countries. HP Vectra Personal Computer is a product of Hewlett-Packard Company. lBM is a registered trademark of Int~rnationd Business Machines Corporation.

This manual uses the following conventions:

CoIor indimtes te~ or graphics that is specific to the LaserJet III (HP 33449) printer. Color may dso be used for emphasis, tities, and other non-HP 33449-specific material.

The names of major printer pafis and assemblies are capitiized.

Bold is used for emphasis, patiicularly in situations where italic me would be confusing.

Italic type is used to indicate related documents or for emphasis.

COMPUTERtype indicates teti visible on the printer’s display or commands as seen on a PC terminal.

[-]	indicates keys, such as (=],	on the printer’s Control Panel or on a computer
keyboard.

Note

,!

*

Caution

@

Warning

B

M

Notes contin impotint information set off from the teti.

Caution messages appear before or tier procedures which, if not obsemed, could result in loss of data or in damage to equipment.

Warning messages signal a specific procedure or practice which, if not followed

correctly, could cause personal injury.

...

Ill

contents

1.PRODUCT INFoRmmoN

1-1<INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . .			1-3
1-2, IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . .			1-5
1-3< SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . .			1-6
1-4< RELATED DOCUMENTATION . . . . . . . . . . . . . . . . . . . . .			1-7
1-5< SAFETY AND RELATED INFORMATION . . . . . . . . . . . . . . . .			1-8
1-6< PRINTER P~TSO~RWEW		. . . . . . . . . . . . . . . . . . . . .	1-12
1-7.	CONTROL P~ELOWRWEW,	. . . . . . . . . . . . . . . . . . . .	1-15
1-8.	SERWCEAPPROACH ..,.,...	. . . . . . . . . . . . . . . . .	1-17
1-9.	WARRANTY STATEMENT . . . . . . . . . . . . . . . . . . . . . . .		1-18

2.S~EP~NGmREQ~REMEm

2-1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . .			2-3
2-2. SITE REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . .			2-3
2-3. STORING AND HANDLING EP-S CART~DGES . . . . . . . . . . . . .			2-4
2-4.	PAPER SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . .		2-6
2-5.	E~LOPE	SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . .	2-8
2-6. ADHESW		NEL AND OWRHEAD TRANSPARENCY SPECIFICATIONS	2-11

3.INsTmMmoN mD comGmmoN

3-1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . .							3-3
3-2. UNPAC~NG			AND INSTALLATION . . . . . . . . . . . . . . . . . .				3-3
3-3. USING THE CONTROL					P~EL	. . . . . . . . . . . . . . . . . . . .	3-7
3-4. USING THE PRINTING					AND CONFIGURATION MENUS . . . . . . . .		3-14
3-5.	FONT	PRINTOUTS . . . . . . . . . . . . . . . . . . . . . . . . . .					3-21
3-6.	SELF	TESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .					3-25
3-7. SERWCE MODE . . . . . . . . . . . . . . . . . . . . . . . . . . .							3-30
4. PRmmm		wmNmcE
4-1.	INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . .						4-3
4-2.	LIFE E~ECTANCY			OF CONSUWLES AND RELATED PARTS . . . .			4-3
4-3.	WNTENANCE		CHEC~OINTS . . . . . . . . . . . . . . . . . . . .				4-4
4-4.	CLEANING THE PRINTER . .					. . . , . . . . ’. . . . . . . . . . . .	4-5
4-5.	CLEARING PNERJAMS				. . . . . . . . . . . . . . . . . . . . . . .		4-11
4-6. OZONE FILTER REPLACEMENT . . . . . . . . . . . . . . . . . . . .							4-13
4-7.	FUSER CLEANING PAD REPLACEMENT . . . . . . . . . . . . . . . .						4-14
4-8.	EP-SCARTRIDGE			LIFE AND USE . . . . . . . . . . . . . . . . . . .			4-15
4-9.	PRINT DENSITY ADJUSTMENT..					. . . . . . . . . . . . . . . . . .	4-16

Contents-1

5.	MC~ONM			O~RWEW
	5-1.	INTRODUCTION			. . . . . . . . . . . . . . . . .	5-3
	5-2.	IMAGE FORMATION .SYSTEM:			: : : . . . . . . . . . . . . . . . . .	5-4
	5-3.	PIcKuP/FEED system . . . . . . . . . . . . . . . . . . . . . . . .				5-13
	5-4.	MACHINE CONTROL SYSTEM. . . . . . . . . . . . . . . . . . . . .				5-16
	5-5.	INTERFACE SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . .				5-17
	5-6.	POWER DISTRIBUTION . . . . . . . . . . . . . . . . . . . . . . . .				5-21
6.	R~OV&		-	REP~C~ENT
	6-1.	INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . .				6-5
	6-2. COWRS,			P~ELS, AND ASSOCWTED PARTS . , . . . . . . . . . . .		6-11
	6-3.	WN	BODY COMPONENTS..		. . . . . . . . . . . . . . . . . . . .	6-19
	6-4. TOP COWR ASSEMBLY COMPONENTS . . . . . . . . . . . . . . . .					6-43
	6-5. BOTTOM			COWRCOMPONENTS	. . . . . . . . . . . . . . . . . . .	6-53

7.~O~LESHOO~NG

	7-1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . .								7-5
	7-2. P~-TROUBLESHOOTING					PROCEDURES	. . . . . . . . . . . , . . .		7-6
	7-3. WNFLOWCHART				. . . . . . . . . . . . . . . . . . . . . . . . . .				7-8
	7-4. PMNTER		MESSAGE TROUBLESHOOTING . . . . . . . . . . . . . . .						7-13
	7-5. IMAGE FORMATION				TROUBLESHOOTING . . . . . . . . . . . . . .				7-57
	7-6. INTERFACE			TROUBLESHOOTING . . . . . . . . . . . . . . . . . . .					7-84
	7-7. TROUBLESHOOTING				MDS. . . . . . . . . . . . . . . . . . . . . .				7-87
8.	Pam m		DMGU
	8-1.	HOW TO USE THE PARTS				LISTS . . . .	. . . , . . . . . . . . . . .		8-3
	8-2.	PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . .							8-4
	8-3.	P~TSIND~		. . . . . . . . . . . . . . . . . . . . . . . . . . . .					8-51
A	YO~	RO~	W	TO SE~NG		UP YOUR WEMET		SERIES 11 PRI~ER

B.	YO~ GUIDE TO SE~NG		W YO~ WEWET	111PRl~ER
c.	HP 33449moRY	BOARD	INsT&MmoN
D.	CMLING DUG-
E.	HP 33440/HP 33449	PRINTER	CO~DS

F.HP 33449 DISPMY MGUAGE MESMGE TWSM~ONS

G1OSXW

Index

Contents-2

PRODUCT information

contents

1.PRoDucTImoumoN

1-1. INTRODUCTION . . . . . . . . . . . . . . .			. . . . . . . .	1-3
Features Common to Both Printers . . . . . . . . .			. . . . . . . .	1-3
Features Which Apply Only to the HP 33440		. . . .	. . . . . . . .	1-3
Features Which Apply Only to the HP 33449		. . . .	. . . . . . . .	1-4
1-2. IDENTIFICATION . . . . . . . . . . . . . . .			. . . . . . . .	1-5
1-3. SPECIFICATIONS . . . . . . . . . . . . . . .			. . . . . . . .	1-6
Physid	Dimensions . . . . . . . . . . . . . . .		. . . . . . . .	1-6
Electrid	Specifimtions . . . . . . . . . . . . . .		. . . . . . . .	1-6
Environment Specifimtions . . . . . . . . . . .			. . . . . . . .	1-6
1-4. RELATED DOCUMENTATION . . . . . . . . .			. . . . . . . .	1-7
HP 33440 . . . . . . . . . . . . . . . . . . . .			. . . . . . . .	1-7
HP 33449 . . . . . . . . . . . . . . . . . . . .			. . . . . . . .	1-7
1-5. S~E~	AND RELATED INFORWTION	. . . .	. . . . . . . .	1-8
Genera	l . . . . . . . . . . . . . . . . . . . .		. . . . . . . .	1-8
Laser Safety . . . . . . . . . . . . . . . . . . .			. . . . . . . .	1-8
Finnish Laser Statement . . . . . . . . . . . . .			. . . . . . . .	1-9
German ZZF Declaration . . . . . . . . . . . . .			. . . . . . . .	1-1o
FCC Regulations . . . . . . . . . . . . . . . . .			. . . . . . . .	1-1o

	Federd	Communications Commission (FCC) Rdio		Frequency Interference (RFI)
	Statement . . . . . . . . . . . . . . . .			. . . . .	. .	. .	1-10
Ozone Emission . . . . . . . . . . . . . . . .				. . . . .	. .	. .	1-11
	Genera	l . . . . . . . . . . . . . . . . . .		. . . . .	. .	. .	1-11
	Employer Responsibilities . . . . . . . . . . .			. . . . .	. .	. .	1-11
	Recommendations for Minimizing Ozone E~osure			. . . . .	. .	. .	1-11
Toner Safe@ and Care . . . . . . . . . . . . .				. . . . .	,.	. .	1-11
1-6.	PRINTER PARTS O~RWEW		. . . . . . . .	. . . . .	. .	. .	1-12
1-7.	CONTROL PANEL O~RWEW . . . . . . . .			. . . . .	. .	. .	1-15
Genera		l . . . . . . . . . . . . . . . . . . .		. . . . .	. .	. .	1-15
1-8.	SERWCE APPROACH . . . . . . . . . . . .			. . . . .	. .	. .	1-1,7
Overview . . . . . . . . . . . . . . . . . . .				. . . . .	. .	. .	1-17
Repair Parts . . . . . . . . . . . . . . . . . .				. . . . .	. .	. .	1-17
Consumables and Accessories . . . . . . . . . .				. . . . .	. .	. .	1-18

1-1

HP 33440/HP 33449 COMBINED SERVICE MANUAL

1-9. WARRANTY STATE~NT		. . . . . . . . . . . . . . . . . . . . . . .	1-18
Genera	l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		1-18
Warran& . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .			1-18
One-Year Limited Warranty . . . . . . . . . . . . . . . . . . . . . . .			1-18
Exclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .			1-18
WarranQ Limitations . . . . . . . . . . . . . . . . . . . . . . . . . .			1-19
Sefice	During the Warran~	Period . . . . . . . . . . . . . . . . . . .	1-19
Setice	After the Warranty Period . . . . . . . . . . . . . . . . . . . .		1-20
Repacting Guidelines for Returning Your Printer . . . . . . . . . . . . .			1-20

1-1.	Printer Identifimtion and Power Rating . . . . . . . . . . . . . . . . . . .				1-5
l-2.	Printer Regulatory Labels...			. . . . . . . . . . . . . . . . . . . . . .	1-8
l-3.	Laser Safety Label Example..			. . . . . . . . . . . . . . . . . . . . . .	1-9
l-4.	Finnish ker		S%tement.	. . . . . . . . . . . . . . . . . . . . . . . .	1-9
l-5. West German ZZF Declaration . . . . . . . . . . . . . . . . . . . . . . .					1-1o
1-6.	~ 33449 Printer (Front and Right Side View) . . . . . . . . . . . . . . .				1-12
l-7.	~33449Printer		(Rearview).	. . . . . . . . . . . . . . . . . . . . . .	1-13
l-8.	~33449Printer		(Internal View) . . . . . . . . . . . . . . . . . . . . .		1-14
l-9.	~33440	Control Panel...		. . . . . . . . . . . . . . . . . . . . . . .	1-15
l-10.	~33449	Control Panel...		. . . . . . . . . . . . . . . . . . . . . . .	1-15

Tables

l-1.	Physid	Dimensions . . . . . . . . . . . . . . . . .		. .	. . . . .	. . .	1-6
l-2.	Electrid	Specifimtions.	. . . . . . . . . . . . . .	. .	. . . . .	...1-6
l-3.	Entironmenti Specifimtions . . . . . . . . . . . . .			. .	. . . . .	. . .	1-6
1-4.	Key Functions ~ 33440 and ~ 33449 Printers . . . . .			. .	. . . . .	. . .	1-16
1-5. Control Panel Indimtors ~			33440 and ~ 33449 Printers	. ,	. . . . .	. . .	1-17

1-2

HP 33440/HP 33449 COMBINED SERVICE MANUAL

f-l. introduction

Features Common to Both Printers

Because the HP 33440 (LaserJet series II) and HP 33449 (LaserJet III) printers produce high-quality output quietiy and reliably, they are idedly suited for today’s business environment.

Both laser printers:

Employ reliable, efficient, and easily maintained designs based on electrophotographic, electronic, and laser technolo~es to produce high-quality print on a variety of media, including copier papers, cotton bond papers, envelopes, transparencies, and labels. Output selection can be for either correct (face down) or reverse (face up) order.

Combine a charging corona, photosensitive drum, toner, developer, and drum cleaner in a single

assembly, the Electrophotographic (EP-S) Cartridge. Simply replacing the EP-S Cartridge allows maintenance and periodic replacement of consumables and parts by the customer, saving both time and maintenance costs.

Employ a compact, safe semiconductor laser driven directiy by control signals. It is certified as conforming to U.S. Bureau of Radiologid Health (BRH) standards.

Produce up to eight pages per minute, depending upon sotiare		and dati constraints, with
extended symbol set capability and Control Panel configurability.
Provide serial (RS-232 and RS-422) and pa~lel	(Centronics) 1/0	mpabilities, with provision for
other 1/0 mpabilities through an optional 1/0	slot.
Support macro cartridges for forms generation.

Features	Which Apply Only to the HP 33440
Memo~	Provides 512 ~ytes toti internal read/write memory with the capability to increase
memory by the addition of 1, 2, or 4 Mb~es, through a single expansion slot, up to 4.5 Mb~es
toti.

Font Handling Provides up to 7-inch character cell size, printable space character, downloadable fonts, font managemen~ and Upto 16 fonts per page. Ten bitmapped fixed-pitch internal fonts are standard. Two font mrtridge slots are available.

Printer Command Language: Employs the PCL4TM Printer Command Language.

■PostScriptR Printer Language: Supports the PostScriptR printer language through an optional HP interface package.

■Resolution: Provides up to 300 x 300 DPI (dots per inch) resolution.

1-3

HP 33440/HP 33449 COMBINED SERVICE MANUAL

Features	Which Apply Only to the HP 33449
Memo~	Provides 1 Mbfie of toti internal read/write memory with the capability to increase

memory by the addition of 1, 2, 3, or 4 Mbytes, through tio expansion slots, up to a toti of 5 Mbfies.

Font Handling Provides dl the features of the HP 33440 as well as font soling capability for generating fonts of any desired size from 4 to 999.75 points in quarter-point increments and autorotation for fonts and raster graphics. (Print images are rotated automatically as the page orientation is rotated, allowing available fonts to be used in dl rotations.) Expanded symbol sets are dso built in, as well as 14 bitmapped fonts and eight salable ~efaces.

Printer Command LanWage: Employs the PCL5TM Printer Command Language, containing HP-GL/2 (HP’s ~ndard plotter language) and other enhanced printing features such as font soling and font rotition.

PostScriptR Printer Language: Supports PostScriptR printer language through an optional HP persondi~ wrtridge.

Resolution: Provides up to 300 x 300 DPI resolution as well as employing Resolution Enhancement,TM an HP proprietary technolo~ that improves the visual quality of printed images beyond the 300 DPI standard capabiti@.

Page Protection Provides, with expanded memo~, the ability to avoid partial printing of complex, graphics-intensive pages.

Localized Display Messages: N1OWSlodization of display messages for five languages.

1-4

HP 33440/HP 33449 COMBINED SERVICE MANUAL

1“2.IDENTIFICATION

The re@atory labels, lomted behind the Face-Up (Rear) output Tray, are different for the HP 33440 and HP 33449. For the HP 33440, the regulatory label contins both the model and serial number. On the HP 33449, the model and serial number are located on a separate label just below the power connector on the right side panel of the Main Body Covers (see Figure l-l). Note that this portion of the right side panel is removable on the HP 33449. (Care must be taken to ensure the printer’s cover, with its serial number, stays with the printer.) The model number is an alphanumeric such as HP 33440A or 33449AB.

For both printers, the serial number consisti of the following sequence: a four digit prefk, a letier, and a five digit suffk (for emple: 0000JOOOOO)The. prefk is used to indicate year and week

of manufacture. The letter designates the country in which the printer was manufactured (“J” indicates Japan, for e~mple). The suffii is a sequential number incremented for each printer produced.

For both printers, the power rating is lomted on a plate nefi to the Power Switch (see Figure l-l).

FACE-UP OWPUT

TWY @EGUWTORY

UBEL BEHIND)

WER		E::	3344?A	3;::0000
	RAnNG
		1		1
WT-	- 1OO-W5	MODEL	AND SERIAL No. PLATE
Hz	50-w	(HP 33449 ONLW
WS.	7.6

HP 33W REGUMTORY MBEL

Figure 1-1. Printer identification and Power Rating

1-5

HP 33440/HP 33449 COMBINED SERVICE MANUAL

1-3. specifications

Physical Dimensions

Table 1-1. Physical Dimensions

Electrical	Specifications
		Table 1-2. Electrical	Specifications*
Volkge		100 V or 115 V A 10%	220 V or 240 V ~ 10%
FreWencies		500r60Hz+2Hz	50 Hz+2Hz
C-nt,		8.7 A at 100 V	3.4 A at 220 V
Steady State		7.6 A at 115 V	3.1 A at 240 V
Power,		870 Wati at 115 V	850 Watts at 220 V
Printing	-mum	3000 BTU/hr	2900 BTU/hr
Power,		170 Wati at 115 V	170 Wa~ at 220 V
Stindby		580 BTU/hr	580 BTU/hr

* With no accessories instiled.

Note

Pi

v

The HP 33440A and HP	33449A (50/60 Hz) have a transformer that
automatidly adjus~ for	100 or 115 volk, the HP 33440AB/AU and HP 33449AB

(5O Hz) automatidy adjust for 220 or 240 volts.

Environmental Specifications

Table 1-3. Environmental Specifications

1-6

HP 33440/HP 33449 COMBINED SERVICE MANUAL

Table 1-3. Environmental Specifications (continued)

H~idity

Mtitude

Audible Noise

Operating	20 to 80%	RH
*Non-Operating	10 to 80%	RH
Operating	Oto 4,600m (Oto 15,100 fi)
*Non-Operating	Oto 15,300m (Oto 50,200 ft)
Printing	5,8 B LWAd(1 B = 10 dB)
	42.9 dB LP~~ (bystander at 4 positions)
Standby	5.0 B LW*d (1 B = 10 dB)
	33.3 dB LpA~ (bystander at 4 positions)

* Printer only, not EP-S Cartridge. See Chapter 2, Section 2-3 for EP-S Cartridge.

I

1“4.RELATED DOCUMENTATION

The folloting documents provide additiond information about the HP 33440 and HP 33449 printers:

HP 33440

Shipped tith printer:
■	LaserJet series II Printer	Getting Started Manual (P/N 33440-90908). (Replaced by Your
	Road Map to setting up Your tiserJet		series II Printer, P/N 33440-90004, in November 1989;
	included here as Appendk	A.)
■	LaserJet series II Printer	User’s Manual (P/N		33440-90901). (English language version.)
■	LaserJet series II Software &plication		Notes	(P/N 33440-90006). (U.S. only.)

■LaserJet series II Printer Technical Reference Manual (P/N 33440-90905).

Additiond information:

■LaserJet series II Printer Paper Specification Guide (P/N 5954-7339).

w Peripherals Handbook Insert (P/N 33440-90906).

H Self-Paced Training Guide and Final Review (P/N 33449+49A-901O1).

HP 33449

Shipped tith printec
Your Guide to Setting up Your hserJet			III (P/N 33449-90905); included here as Append& B.
■	LaserJet III Printer	User’s Manual (P/N	33449-90901). (English language version.)
■	LaserJet III So~are	&plication Notes	(P/N 33449-90917). (U.S. only.)

■LaserJet III User’s Quick Reference Guide (P/N 33449-90902).

Additiond information:

■Peripherals Handbook Insert (P/N 33449-90908).

■	SelfiPaced Training Guide and Final Review (P/N		33449+ 49A-901O1).
■	LaserJet III	Technical Quick Reference Guide (P/N	33449-90904).
■	LaserJet III	Technical Reference Manual (P/N33449-90903).

1-7

HP 33440/HP 33449 COMBINED SERVICE MANUAL

?-5. SAFETY AND RELATED INFORMATION

General

The HP 33440 and HP 33449 printers are UL 478 listed, CSA 22.2154 certified, and manufactured

in accordance with DIN EC		380/IEC 435. Where necessary, warning labels are affked to the
printer wherever	special service atiention is needed.
warning	Because the printers		contain	potentially	hazardous voltages, accessories such
B	as watches	and rings	should	be removed	before working on the printers.
u

Laser Safety

The both printers are certified as Class 1 laser products under the U.S. Department of Health and Human Services (DHHS) Radiation Performance Standard according to the Radiation Control for Health and Safety Act of 1968. This means that they do not produce hazardous laser radiation. Both printers dso comply with the Center for Detices and Radiologid Health (CDRH) regulations. Since laser light emitted inside the printer is completely confined within protective

housings and etirnd covers and futiher	contined by an interlock system, the laser beam cannot
escape during any phase of normal user operation.
The Center for Devices and hdiologid	Health (CDRH) of the U.S. Food and Drug
Administration implemented relations	for laser products on August 2, 1976. These regulations
apply to laser products manufactured since August 1, 1976.		Compliance is mandatory for products
marketed in the United States. The label below (see FiWre		1-2) indicates compliance with CDRH

regulations and must be attached to liner products marketed in the United States. European models dl comply with or meet IEC 825 for laser safety.

L

warning

B

u

Figure 1-2. Printer Regulatory Labels

When servicing or adjusting the printer’s optical system, do not place screwdrivers or other shiny objects in the path of the laser beam. Although invisible, the reflected beam can cause permanent eye damage.

1-8

HP 33440/HP 33449 COMBINED SERVICE MANUAL

mere there is danger of exposure to laser radiation, the fo~oting label is attached inside printer covers:

I	DANGER-INv~Bu	LASERRADIAmONWHENOPEN.
	AVOID	DIRE~ EX~URE	TO BEAM.	\
	ATTENTION - RAYONNEMENTLASERINVISISLES1OUVE~.
	DANGEREUXN REGARDERA Ul~MEUR.
	VORSICHTUN~	RE LASERSTRAHLENWENNGE6FFNH.
	NM	HINEINSEHEN.		\

~ g’ c&\

CAUTION-INVSBM LASERRADIAN WHENOPEN. AV~D EX~SURE ~ BEAM.

ATTENTION -RAYONNEMENTLASEREN CAS

I DOUVERTUREExPO~N DANGER-

AU FAZU.

VARO!-AVATTAESSAOLET ALrmNA NAKYMAnOMAW

U=RSA_lLYLLE	AM KATSDS~TEESEEN.
@ K-6	m-wa

I I

Figure 7-3. Laser safety Label Example

Finnish Laser Statement

The folloting notice is required to be printed in Finnish.

			\
TURVALL	IS UUSYHTEENVETO
MERTURV&LISUUS
HP 33440AB ja HP 33449AB laserki~oitimet ovat ti~an			kanndta turvdlisia luokan 1
laserlaitieita. Laitieet on tirkastanut Suomessa Tyoterveyslaitosja tyyppihyv~ynyt
Tyosuojeluhdlitus, Tyosuojeluhdlituksen hyv~yntinumerot
HP 33440AB: TSH 1563/6019/87
HP 33449AB: TSH 713/6019/89
Tarkastuksessalaitieiden turvdlisuusluokka on mtira~			vdtioneuvoston p=toksen N:o
472/1985 ja standardin SFS-EC		825 mukaisesti.
NormAikaytossa laitteen suojakotelo estia laser~teen p%syn laitteen ulkopuolelle.
HUOLTO
firjoittimien	sis~la ei ole ka~jan	huolletitissa olevia kohteita. Laitieet saa avati ja

huoltaa ainoastaan laserltitieiden huoltimiseen koulutetiu henkilo. T~laiseksi

huoltotoimenpiteeksi ei katsota variainekasetinvaihtimista, paperiradan puhdistusta ti

muiti kayttoohjeessa lueteltuja, ka~j an tehtiv~si tarkoitetiuja yllapitotoimia.

Wrjoittimien turvdlisuusluokitus muuttuu mikNi niiden suojakotelo ava~n. Laitteiden sis~la olevassalaseryksikossa on laserdiodi,j oka Iaitieen toimiessa lahe~ silm~le n~ymatonti, luokan 3B Iasersateilya.

Figure 1-4. Finnish Laser Statement

1-9

HP 33440/HP 33449 COMBINED SERVICE MANUAL

German ZZF Declaration

The fo~owing notice, which is required to be printed in German, applies to printer operation and seticing in Germany.

Funkentstorung Deutschland Herstellerbescheinigung

Hiermit wird bescheini@, dd das Gerat HP 33440 oder ~ 33449 in ~ereinstimmung mit den Bestimmungen von Postverfugung 1046/84 funkentitirt ist.

Der Deutschen Bundespost wurde das Inverkehrbringen dieses Gerates angezei~ und die Berechtigung zur ~erpfifung der Serie auf Einhdtung der Bestimmungen eingeraumt.

Wird das Gerat innerhdb einer Anlage betrieben:

8So mufi bei Inanspruchnahme der Algemeinen Genehmigung FTZ 1046/84 die gesamte Anlage der oben genannten Genehmigung entsprechen.

HDie mit einer FTZ-Serienprtifnummer gekennzeichnet ist, und fir die eine Betriebsgenehmigung vorlie~ oder beantragt wird, so sind in der Regel keine weiteren Schritte notwendig.

Figure 1-5. West German ZZF Declaration

FCC Regulations

Federal Communications Commission (FCC) Radio Frequency Interference	(RFI) Statement
This equipment generates and uses radio frequency energ. If not instiled,	serviced, and

used properly (that is, in strict accordance with the manufacturer’s instructions), it may cause interference to radio and television reception. The equipment has been type tested and found to comply within the limits set for a Class B computing device in accordance with the specifimtions in Subpart J of Part 15 of FCC ties, which are designed to provide reasonable protection against such interference in a residential instigation.

Note	Use of a shielded interface able is required for compliance to fdl within the Class
#	B timits in Subpart J of Part 15 of FCC rules.
w

No guarantee can be given that interference with radio or television reception will not occur in a particular instigation. If this equipment does muse interference - which can be determined by turning the equipment off and on – try to correct it by using the following measures:

■Reorient the radio or television antenna.

■Reorient the device with respect to the radio or television receiver. N Move the device away from the receiver.

E Plug the device into a different outiet so it is on a different branch circuit than the receiver.

1-10

HP 33440/HP 33449 COMBINED SERVICE MANUAL

If necessary, consult your deder or an experienced radio/television technician for additiond suggestions. The Federd Communimtions Commission has prepared a booMet entitled lnte~erence Handbook (1986) (stock number 004-000-004505-7) which may be purchased from the Superintendent of Documents, U.S. Government Printing Office, Washin@on, D.C. 20402.

Ozone Emission

General

The corona assemblies found in laser printers and photocopiers generate ozone gas (03) as a

by-product of the electrophotographic process. Ozone is only generated while the printer is actually printing (i.e., while the corona assembly is energized). Unde~riters Laboratory (UL) has

established a standard for ozone emissions. Ml LaserJet printers meet this standard when shipped from the factory.

Employer Responsibilities

Because ozone can be an irritant, various regulatory agencies have e~blished limits to the amount of ozone to which employees may be exposed. The employer should provide a work environment that meets the following standards:

■A person may not be exposed to an average concentration of greater than 0.1 part per million (PPM) of ozone for a period of eight hours.

■At this time, the American Conference of Governmental Industrial Hygienists (ACGIH) has proposed a ceiling limit of 0,1 PPM for ozone.

Recommendations for Minimizing Ozone Exposure

Mmost dl ozone concerns arise from abnormal site or operating conditions. The following conditions may generate an ozone complaint

■Multiple laser printers in a confined area. w Efiremely low relative humidity.

■Poor room ventilation.

■Printer exhaust port directed toward the faces of personnel.

E fisting Ozone Filter in need of replacement (see Chapter 4).

■ Long, continuous printing combined with any of the above conditions.

Inspect your work environment for the operating conditions listed above if you believe ozone emissions are a problem in your area. Some people may be extremely sensitive to ozone odor. If this situation is encountered, it is advisable to position the printer away from the sensitive user.

Toner Safety and Care

Toner is a nontoxic substance composed of plastic, iron, and a small amount of pigment. Care should be taken to avoid breathing toner particles. To clean toner from skin and clothing, remove as much toner as possible with a vacuum or dry tissue wipes, then wash the toner from skin or clothing with cold water. Hot water makes toner very difficult to remove. Bemuse toner tends to be degraded by vinyl materials, contact with vinyl should be avoided.

1-11

HP 33440/HP 33449 COMBINED		SERVICE	MANUAL
?-6. PRINTER	PARTS	OVERVIEW
Since the lomtion	of major components is similar for both printers, only the HP 33449 is shown

here. For an HP 33440-specific pa~ overview, see Chapter 6.

Figure 1-6.

HP 33449 Prin%er (Front and Right side view)

1.Top Cover Release Bution.

2.Test Print Bution (under panel on HP 33449).

3.Control Panel.

4.Right Cartridge Slot.

5.Lefi Cartridge Slot.

6.Paper Tray Slot.

1-12

HP 33440/HP 33449 COMBINED SERVICE MANUAL

1.Rear (Face-Up) Output Tray Release.

2.Top (Face-Down) Output Tray.

3.Rear (Face-Up) Output Tray (closed).

4. Expansion Memory Slot(s) (one in HP 33440, ~o in HP 33449).

5.Par~lel Port.

6.Serial Port.

7.Optional Interface Slot.

8.Serial Number (HP 33449) (On ReWlatory Label for HP 33440).

9.Power Connector Socket.

10.Power Stitch.

1-13

33440/HP 33449 COMBINED SERVICE MANUAL

Figure	1-8.
HP 33449	Printer
(Internal	Wew)

1.Ozone Filter.

2.Feed Guide Assembly.

3.Transfer Corona Assembly.

4.Transfer Guide Lock Tray.

5.Print Densi@ Did.

6.Transfer Guide Strip.

7.Cleaning Brush.

8.Fusing Assembly.

9.EP-S Cartridge.

1-14

HP 33440/HP 33449 COMBINED SERVICE MANUAL

7-7. CONTROL PANEL OVERVIEW

General

Since key names and functions for both printers are essentially the mme, the table of key assignments below applies to both printers. A complete overview of Control Panel finctions with regard to service needs is given in Chapter 3. For a detailed overview desi~ed for users, see the kserJet series II Printer User’s Manual or the kserJet III User’s Manual.

Display window

Indicator light

Indicator light

	+
-	0
READY
00 READY
1	D
-
MANUAL

BnnD[M+m

White

Yellow

d

Figure

a-9. HP 33440

Control

Panel

,

1

=Raady

	H Manml	00 READY	Display
			window

Y On UM nmm

&j=, L

Figure f-lo. HP 33449 control Panel

1-15

[PRINT FONTS)

HP 33440/HP 33449 COMBINED SERVICE MANUAL

Table 1-4.

Key Functions

HP 33440 and HP 33449 Printers

Keys

m

Description

Turns printer on line and OR line. When on line, the indimtor light is on and the printer a receive data. When OHline, other Control Panel functions can be performed.

~CONTINUE/RESETj

[PRINT FONTS/TESTj

(FORM FEED)

m

~ Briefly pressing this key clears most errors and returns

printer to on-fine status. Will dso reprint lost pages due to correctable error conditions.

[=] Holding down key until 07 RESETis displayed (2 -5 seconds) resets the printer, returning dl printing setiings to Control

Panel settings and clearing temporary sofi fen%, macros, and stored page data.

Briefly pressing this key gives a printout of sample characters from currentiy available fonts.

~Holding down key until 05 SELFTESTis displayed

tethe controller and prints a test printout. If key is held down longer, 04 SELFTESTis displayed and continuous test prints are made (press

~~) again to stop test print process).

Form feed tight indicates that page data is stored in printer’s memory.

Pressing (~] printi dl stored data.

Accesses and steps through Printing and Configuration Menus.

		Pressing [H)		enters the Printing Menu (COPIES=is dis-
		played).
		Holding down [-]			(about 5 seconds) until SYMSET= (HP
		33440) or AUTOCONT=(~				33449) is displayed enters the Configuration
		Menu.
(ENTER/RESET	MENuj	_	Pressing key saves a Menu choice while in the Printing or
		Configuration Menus.
		[RESET	MEN u)	Holding down key until ogMENURESETis
		displayed returns Printing Menu confi~ration to factory defaul~.
Qor	Q	Pressing Q		or Q	will increment or decrement menu item choices.
		Holding down a key til				scroll through choices.

1-16

		HP 33440/HP		33449	COMBINED	SERVICE	MANUAL
		Table	1-5.
	Control	Panel	Indicators
	HP 33440 and HP 33449			Printers
Indimtor			Dacription
On Line Indimtor	When the amber LED adjacent to the [~]				key shows a steady light,
	the printer is on line, indimting that it is ready to receive data. The
	printer should be on line tier it has been turned on and warmed up.
Form Feed Indimtor	The amber FORM FEED indiwtor adjacent to the [~)					key will
	light whenever page dati is stored in the printer’s memory and flash
	when this data is being printed.
Ready Indicator	The green READY indimtor is lit when the printer is on and ready
	to print. When the light is flashing, the printer is receiving dati						or
	processing data &ready received.
Manual Indicator	The amber WUAL	indimtor is lit when manual feed has been
	selected from the Control Panel or through a sotiare					application.

Overview

The basis for repair for both the HP 33440 and HP 33449 printers centers on the modular-level replacement of electro-mechanid assemblies and some associated components as well as the assembly-level replacement of printed cirmit assemblies (PCAS). For both printers, the diagnostics and this document together aid in isolating problem areas. After lomtion, the problem assembly or component should be replaced without further atiempts to identi~ failures within the component or assembly.

Repair Parts

For both printers, an exchange program for Interface/Formatter PCAS, DC Controller PCAS, optional memory PCAS, and the Fusing Assembly will be available. Ml other failed PCAS will normally be dismrded when discovered to be defective. Service parts may be ordered from Hewlett-Packard’s Support Materials Organization (SMO) or Pam Center Europe (PCE). Part numbers can be found in Chapter 8 of this document.

Support Materials Organization	Parts Center Europe
3625 Cincinnati Avenue	Wolf-Hlrth Strasse 33
RocMin, California 95677-1297	D-7030 Boeblingen, West Germany
[phone]	0049-7031-140

1-17

HP 33440/HP 33449 COMBINED SERVICE MANUAL

Consumables and Accessories

Consumables may be ordered from Hewleti-Packard’s Direct Marketing Division (DMK) and are often available through an authorized Hewlett-Packard deder. The telephone number for DMK is 800-538-8787 (In California 408-738-4133).

Mthough they should not be used as a part of normal repair operations, more common consumable and accessory part numbers can be found in Chapter 8 of this manual. Current font cartridges, cables, and miscellaneous accessories and part numbers can be obtained by dling the DMK number above and requesting a current catiog.

1-9. WARRANTY STATEMENT

General

The fo~owing material is taken from the bserJet 111Printer User’s Manual with only slight changes. Unless specifidly noted, it applies to the LaserJet series II as well.

Warranty

This warran~ gives you specific legal rights. You may dso have other rights which vary from state to state or province to province.

One-Year Limited Warranty

Hewlett-Packard warrants its computer hardware products against defects in rnaterids and workmanship for a period of one year from receipt by the end user. During the warran~ period, HP will, at its option, either repair or replace products which prove to be defective.

Should HP be unable to repair or replace the product within a reasonable amount of time, a refund of the purchase price may be given upon return of the product.

Exclusions

The warran@ on your LaserJet HI printer shall not apply to defects resulting from:

■Improper or inadequate maintenance by customer. z Customer-supplied software or interfacing.

■Unauthorized modiflmtion or misuse.

Operation outside of the environment specifications for the product.

■Operation of non-supported printing media.

■Duty cycle abuse (see note on next page).

,	Operating the printer from a mechanid switchbox without a designated surge protector.
w Improper site preparation and maintenance.
	Use of non-Hewleti-Packard EP-S Cartridges, memory boards, or interface boards.

1-18

Note

Ej

HP 33440/HP 33449 COMBINED SERVICE MANUAL

Operation of the printer beyond the limit of its duty cycle (printing greater than the equivalent of 12,000 (HP 33440) or 16,000 (HP 33449) single-sided pages per month) shall be deemed printer abuse and dl repairs thereafter will be billed on a time and materials basis.

If you are using a mechanid switchbox, ensure that it is equipped with a surge protector. Damage to your printer could occur from the use of unprotected mechanid switchboxes.

The warranty period begins either on the date of delivery or, where the purchase price includes instigation by Hewlett-Packard, on the date of instigation.

Your LaserJet III printer must be serviced by one of the authorized repair depots within the country of original purchase. Customer shall prepay shipping charges (and shall pay all duty and taxes) for products returned for service. Except for products returned to the customer from another country, Hewleti-Packard shall pay for return of products to the customer. If the unit is repaired by an authorized dealer, you will need to negotiate the method and cost of returning the unit with the dealer.

YOUmay convert your one-year warranty to a 90-day on-site service agreement any time within 90 days of purchase. Contact your dealer or HP Sales Representative for details regarding this option.

Warranty Limitations

The warranty set forth above is exclusive and no other warranty, whether written or oral, is expressed or implied. Hewlett-Packard specifically disclaims the implied warranties of merchantability and fitness for a particular purpose.

Some states or provinces do not allow limitations on how long an implied warranty lasts, so the above limitation or exclusion may not apply to you. However, any implied warran~ of merchantability or fitness is limited to the one-year duration of this written warranty.

Service During the Warranty Period

If your hardware should fail during the warranty period, bring the equipment to an authorized HP Dealer Repair Center or send the equipment to one of the HP Field Repair Centers.

When sending equipment to an HP Field Repair Center or Dealer Repair Center, follow the repacting guidelines listed below. MSO,complete and enclose the Service Information Form beginning on page 8-9 (HP 33449 only) of the User’s Manual. Insuring the equipment for shipment is recommended.

warning Shipping damage as a result of inadequate packaging is the customer’s responsibility. Use the original packing materials whenever possible.

1-19

HP 33440/HP 33449 COMBINED SERVICE MANUAL

Service After the Warranty Period

If your hardware fails after the warran~ period, contact an Authorized HP Dealer Repair Center. If you have an HP Maintenance Agreement, request service under your agreement.

When sending equipment to an HP Field Repair Center, follow the repacking guidelines Oisted in the User’s Manual). Mso, complete and enclose the Sefice Information Form (in the User’s Manual) and enclose a copy of proof of purchase. Insuring the equipment for shipment is recommended.

Repacking Guidelines for Returning Your Printer

■ Remove any font mrtridges instiled in the pfinter.

■Remove the EP-S Cartridge and the Fuser Cleaning Pad.

■Remove any non-HP accessories (if instiled).

■Remove paper trays, but include them in the box with the printer.

■ Use the ori@nd shipping container and packing materials, if possible.

■Include the completed Service Information Form. Include print samples which illustrate the problems you are having, if applicable.

w Include 50-100 sheets of any problem paper or forms, if possible.

Note	If you have already disposed of your printer’s packaging materhd and are unable
q	to locate another package, the packaging can be ordered from HP’s Support
@P	Materials Organization at the following phone numbers:
.bJt.:
@..,,	United Stites:	800-227-8164
	Canada	416-678-9430
	Europe:	41-22-83-81-11

Ask for part number 33440-00908 for the HP 33440 or 33449-00908 for the HP 33449. The proper packaging material @ox and inserts) will be sent to you for a nominal charge. (For further packaging information on both printers, see Chapter 3, Section 3-2 of this manual or Appendix A (HP 33440) or Appendk B (HP 33449).)

1-20

S;TE PLANNING

AND REQUIREMENTS

2. sm F~NG				AW REQmRmm			2-3
2-1.	INTRODUCTION . . . . . . . .					. . . . . . . . . . . . . . . . . . ,
2-2.	sITEREQumMENTs				+...	. . . . . . . . . . . . . . . . . . .	2-3
2-3. STORING AND WDLfiG					EP-S CARTRIDGES . . . . . . . . . . . . .		2-4
Storage tith			Packaging Intict . . . . . . . . . . . . . . . . . . . . . . .				2-4
Storage Mer			Opening Packaging . . . . . . . . . . . . . . . . . . . . . .				2-4
	Storage Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . .						2-4
	Handling Suggestions . . . . . . . . . . . . . . . . . . . . . . . . . .						2-5
2-4. PAPER SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . .							2-6
Genera		l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .					2-6
Paper T~es to Use . . . . . . . . . . . . . . . . . . . . . . . . . . . .							2-6
Paper T~es			to Avoid . . . . . . . . . . . . . . . . . . . . . . . . . . .				2-6
2-5.	E~LOPE		SPECIFICATIONS..			. . . . . . . . . . . . . . . . . . .	2-8
Genera		l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .					2-8
Envelope Procurement Recommendations . . . . . . . . . . . . . . . . . .							2-8
Envelope T~es				To Avoid . . . . . . . . . . . . . . . . . . . . . . . . .			2-9
Envelope Construction and Size . . . . . . . . . . . . . . . . . . . . . .							2-9
2-6. ~HES~			MEL AND OWRHEAD			TRANSPARENCY SPEC~ICATIONS	2-11
Adhesive		Labels		...,.....	. . . . . . . . . . . . . . . . . . . .		2-11
Overhead Transparencies . . . . . . . . . . . . . . . . . . . . . . . . .							2-12

2-1.	Printer Space Requirements . . . . . . . . . . . . . . . . . . . . . . . .	2-3
2-2.	Toner Distribution and Storage . . . . . . . . . . . . . . . . . . . . . .	2-5
2-3.	Good and Poor Envelope Construction . . . . . . . . . . , . . . . . . . .	2-8

2-1

HP 33440/HP 33449 COMBINED SERVICE MANUAL

Tables

2-1.	EP-S Cartridge Storage Conditions With Pa&ging Intact . . . . . . . . . . .			2-4
2-2.	Paper Specifiwtions		. . . . . . . . . . . . . . . . . . . . . . . . . . .	2-7
2-3.	Envelope Specifimtions . . . . . . . . . . . . . . . . . . . . . . . . . .			2-1o
2-4.	Adhesive hbel	Specifiwtions . . . . . . . . . . . . . . . . . . . . . . .		2-12
2-5.	Transparency	Specifimtions . . . . . . . . . . . . . . . . . . . . . . . .		2-12

HP 33440/HP 33449 COMBINED SERVICE MANUAL

2-1.INTRODUCTION

HP 33440 and HP 33449 printers are mrefnlly adjusted and inspected before they are shipped. To maintin the performance level set at the factory, correct selection of a location is ~remely impo~nt. The service representative should filly understand the functions of the printers to ensure selection of a suitable lomtion.

2-2SITE.REQUIREMENTS

The HP 33440 and HP 33449 printers are designed to operate in a clean environment, preferably in an area not subject to excessive mechanid shock, vibration, or a wide range of temperatures. Mthough air conditioning and power conditioning are not required to ensure reliable operation, the environment specifications listed in Chapter 1, Section 1-3, should not be exceeded.

The following suggestions should be taken into consideration prior to instigation

The printer should not be instiled	near water faucets, humidifiers, refrigerators, or similar
devices that affect the environment.	A location where the temperature changes abruptly, such as
near an air conditioner, should dso	be avoided.

The printer should not be exposed to open flames, dust, ammonia fnmes, and direct sunlight or other excessively bright light source at anytime.

The room should be well ventilated.

The printer should be intiled on a sturdy, level surface.

Stilcient space should be protided to permit unimpeded printer operation and adequate ventilation (see Figure 2-l).

57” (144 cm)

+

I8“ (20 cm)

m

22” (55 cm)

4

*

I8“ (20 cm)

Figure 2-1. PrinterSpace Requirements

2-3