LASER PRINTER

PARTS REFERENCE LIST

MODEL:HL-1260e

NOTES FOR USING THIS PARTS REFERENCE LIST
1.In the case of ordering parts, it needs mentioning the following items: (1) Code (2) Q'ty (3) Description (4) Revision No. (for a kind of printed circuit boards) Note : No orders without Parts Code or Tool No. can be accepted.
< Example > (1) (2) (3)

REF.NO.

DESCRIPTION

REMARKS

(4) Revision No.; marked on a printed circuit board.

B48K056 - 201 A

Design change indication Specification No. Pattern alteration No. Circuit board No.
2. Design-changed parts; If the parts are changed, any one of the following symbols is indicated in the REMARKS column. #A : compatible between old and new #B : replaceable from old to new #D : incompatible # : newly established 3. The original of this list was made based on the information available in February, 1996. 4. Parts are subject to change in design without prior notice.

CONTENTS

1. POWER CORDS & HARNESSES... 1 2. PAPER FEEDER PCB.... 1 3. CONTROL PANEL... 3 4. PCB ATTACHMENTS... 3 5. MAIN PCB, OTHERS... 5 6. MAIN PCB, ISRAEL... 7 7. HIGH-VOLTAGE POWER SUPPLY... 9 8. LOW-VOLTAGE POWER SUPPLY.. 9 9. COVERS... 11 10. CHASSIS.... 11 11. TRANSFER.... 13 12. PAPER TRAY... 13 13. PAPER FEEDER... 15 14. SCANNER.... 17 15. FIXING UNIT, 120/230V... 17 16. DOCUMENTS... 19 17. PACKING MATERIALS... 19 18. OPTIONAL PARTS SET.. 21 19. ADJUSTING TOOL KIT... 21
1. POWER CORDS & HARNESSES
1A 1B 1C 1D 1E 1F 1G 1H 1I 5 6

HL-1260e

54T-U01-050/070

2. PAPER FEEDER PCB

JW24 JW23 R14

1 P4 (MP SOL)

P5 (ENGINE) JW13
RH1 R1 JW12 JW2 P1 (FEED MOTOR)

JW25 P3 (CASOL)

JW19 R3 C3

JW3 JW4

Q2 JW20 JW17 JW22
R5 JW7 JW6 JW5 R7 C5 R6 JW1 RHJW9 C2 JW14 C1

R8 JW8 JW21 C17

JW26 P1

B48K139-2

R2 R9 PH3 JW11 JW10

B48K140-2

SW1 SW2 SW3 SW4

54T-U01-090

1. POWER CORDS & HARNESSES REF.NO. CODE Q'TY DESCRIPTION 1A UHAC CORD, VDE 1B UHAC CORD, SEV 1C UHAC CORD, SAA 1D UHAC CORD, BS 1E UHAC CORD, UL/CSA 1F UAC CORD #4, BS WO/PLUG 1G UKAC CORD #5, DEMKO 1H UAC CORD #6, ISRAEL 1I UAC CORD #8, BS/SINGAPORE 2 UKHV HARNESS 16P 3 UKFEED FLAT CABLE 20P 4 UKLV HARNESS 8P 5 UKFUSER HARNESS 4P 6 UKDC MOTOR HARNESS 4P

REMARK

MODEL HL-1260e 54T-U01-050/070 T/I NO. PR98046 2. PAPER FEEDER PCB REF.NO. CODE Q'TY DESCRIPTION 1 UKP FEED/SIZE-SW PCB ASSY (SP) UH1 SIZE SWITCH SPRING 1 TAPTITE, CUP S M3X6
SYMBOL B48K139/140200B/200B
MODEL HL-1260e 54T-U01-090

3. CONTROL PANEL

CO SE FE ED T

TE SE T

RE SH IFT

FO FO MO DE OM Y NT

CO ED ER

EC UL AT IO N

FE TIO N

54T-U01-150

4. PCB ATTACHMENTS
MODEL HL-1260e 54T-U01-450

TI No.96-P035 / PR98309

3. CONTROL PANEL REF.NO. CODE 1-1 UKUKUH2020001
Q'TY DESCRIPTION 1 CONTROL PANEL UNIT (SP) 1 SWITCH FLAT CABLE 21P 1 PANEL SHEET, 1260e

SYMBOL (B48K143-200B)

MODEL HL-1260e 54T-U01-150
4. PCB ATTACHMENTS REF.NO. CODE Q'TY 1 UH2 UH3 UHUH6 UK7 UK8 UK9 UK10 UH2123001 1
DESCRIPTION REMOTE SWITCH PS SWITCH WIRE DC FAN MOTOR TAPTITE, PAN B M3X35 HOLDER SPACER CORE:RI-12-15-8.5 CORE:FPC-16-12 CORE:ZCAT1518 CABLE CLAMP SWITCH ATTACHMENT
MODEL HL-1260e 54T-U01-450 TI NO. 96-P035 / PR98309

C192 1

C172 R149 C171 R148 1

+ C168

OPTION

1 C152 C148

C166 C162 C158 C141

(EVEN )

(EVENRS232C P14 P13 )
C170 R147 C169 R145 R142 SP5

R138 R131

C147 C145 C139 C137 SP4 C146 C138

ROM 0H

CDCC C167 C163 C159 C156

ALS1034

RA77 72
C140 R126 R120 C133 C129 C126

SP3 CP5 C136

ADM202JRN
C165 R144 RA78 C160 R130 C161 R137 R135 C144 C151 C154

R129 C150 C143 C142

PST591

9.8304MHZ

MODEL HL-1260e 54T-U01-300 TI NO. 96-P033

9. COVERS

8 7-3 5

54T-U01-400

10. CHASSIS

54T-U01-500

9. COVERS REF.NO. CODE 1 UHUHUHUHUHUH2027001 7-8 UHUHUH087321016

Q'TY 2

DESCRIPTION UPPER COVER ASSY, GRAY1227 TONER CARTRIDGE LID, GRAY1227 FONT COVER ASSY, GRAY1227 CLEANER BRUSH SIDE COVER L, GRAY1227 SIDE COVER R2 ASSY, GRAY1227 REAR COVER ASSY, GRAY1227 CHANGEOVER GUIDE, GRAY1227 JAM REMOVE COVER, GRAY1227 TAPTITE, CUP S M3X6 TAPTITE, CUP S M3X6 TAPTITE, CUP S M3X6 TAPTITE, CUP S M3X10
MODEL HL-1260e 54T-U01-400 T/I NO. PR98175 10. CHASSIS REF.NO. CODE 1 UHUHUHUHUHUHUHUHUHUHUHUHUUHUHUHT31242001
DESCRIPTION CARTRIDGE STOPPER ASSY DC GEAR HOLDER ASSY DC MOTOR ASSY (SP) TAPTITE, CUP S M3X6 GEAR 39 GEAR 20/50 GEAR 24/72 GEAR 22/55 GEAR 48 GEAR 21 GEAR 28 GEAR 48 SPRING WASHER, PLAIN S 10 PAPER DELIVERY GEAR ASSY TAPTITE, CUP M4X5 PAPER DELIVERY HOLDER SPRING SPACER 2 SPACER 1 SPACER F
MODEL HL-1260e 54T-U01-500

11. TRANSFER

54T-U01-600

12. PAPER TRAY

MODEL HL-1260e 54T-U01-650

TI No.96-P077 / 97-P021

11. TRANSFER REF.NO. CODE 1 UHUH087321016
Q'TY DESCRIPTION 1 TRANSFER BASE ASSY (SP) 1 TRANFER ROLLER A ASSY (SP) 1 TAPTITE, CUP S M3X10
MODEL HL-1260e 54T-U01-600 T/I NO. PR98174 12. PAPER TRAY REF.NO.CODE Q'TY DESCRIPTION 1-10 UHPAPER TRAY UNIT US (SP), USA 1-10 UHPAPER TRAY UNIT EC (SP), EUR 1-10 UHPAPER TRAY UNIT CA (SP), CAN 1-10 UHPAPER TRAY UNIT, ADP 1 UHSEPARATION PAD ASSY T 2 UHSEPARATION PAD SPRING T 3 UHROLLER 4 UHROLLER HOLDER 5 UHPAPER FRONT GUIDE, BLUEUHGEAR 56T LINK 7 UHSIZE DRUM 3 TAPTITE, BIND B M3XUHTRAY GUIDE PLATE UHADJUST KNOB STOPPER
MODEL HL-1260e 54T-U01-650 TI NO. 96-P077 / 97-P021 / PR98270

13. PAPER FEEDER

35 1-19 20

54T-U01-630

TI NO. 97-P049 / PR97037 / PR97131 / PR98202
13. PAPER FEEDER REF.NO. CODE 1-35 UHUHUHUH2362001 UH2364001 UHUH2416001 UH2367001 UL0633000 UHUHUH2428000 UH2379000 UH2380000 UH2381000 UH2382000 UH2383000 UH2384000 UH2136001 UH2797001 UH2393001 UH2433001 UH2397001 UH2400000 UH2406000 UH2407000 UH2823001 UH2401000 UH2402000 UH2403000 UH2404000 UH2821001 UH2822001

Q'TY DESCRIPTION 1 PAPER FEEDER CHASSIS UNIT 2 (SP) (WITH PCB/SW SPRING/SCREW) 1 PAPER FEED MOTOR ASSY 2 TAPTITE, CUP S M3XMP PAPER DETECTION ACTUATOR 2 TAPTITE, BIND B M3XPAPER PICK-UP ROLLER ASSY 2 PAPER PICK-UP ROLLER COLLAR 2 BEARING 2 TAPTITE, BIND S M3XPAPER FEED ROLLER ASSY PAPER FEED ROLLER ASSY WASHER, PLAIN 3 BEARING 3 TAPTITE, BIND S M3XPAPER PICK-UP SOLENOID 2 TAPTITE, BIND S M3XBEARING CALLOR 1 TRAY SENSOR HOLDER 1 PE SENSOR ACTUATOR TRAY 1 PE ACTUATOR LINK 1 DU DETECTION ACTUATOR 1 PE SENSOR ACTUATOR MP 1 REGIST SENSOR ACTUATOR 1 LATCH 1 MP PAPER FEED GUIDE ASSY (SP) 1 SEPARATION PAD ASSY 1 SEPARATION PAD SPRING MP 1 MP TRAY ASSY 1 MP PE SUB ACTUATOR 1 MP TRAY COVER 1 MP EXTENSION TRAY 1 SPACER 1 MP PAPER GUIDE 1 MP RELEASE PLATE 1 MP RELEASE SUPPORTER 1 MP SPRING 1 PAPER PICK-UP ROLLER ASSY PAPER PICK-UP ROLLER COLLAR 30
MODEL HL-1260e 54T-U01-630 T/I NO. PR97037 / PR97131/ PR98001 / PR98202

14. SCANNER

PR98061

HL-1260e 54T-U01-700

TI No.96-P018
15. FIXING UNIT,120V/230V
TI No.PR97148, PR98054, PR98061

B48K142-2

1 R1 P1 P1 2

54T-U01-770/771

14. SCANNER REF.NO. CODE 1 UHUKUK2504001

Q'TY 4 1

DESCRIPTION SCANNER UNIT ASSY A (SP) SCN FLAT CABLE 6P TAPTITE, CUP S M3X16 SCN HARNESS 4P
MODEL HL-1260e 54T-U01-700 TI NO. 96-P018 15. FIXING UNIT, 120V/230V REF.NO. CODE Q'TY 1-6 UH1-6 UH1 UH2 UH3 UKUH6 UH6 UHUH9 UH10 UH2628001 1
DESCRIPTION FIXING UNIT, 120V (SP) FIXING UNIT, 230V (SP) HEAT ROLLER (SP) RETAINING RING, 25 FIXING PCB ASSY TAPTITE, BIND B M3X8 PAPER DELIVERY ACTUATOR HALOGEN HEATER, 120V (SP) HALOGEN HEATER, 230V (SP) TAPTITE, CUP S M4X10 HEATER SUPPORT SPRING S HEATER SUPPORT SPRING S #2 THERMISTOR ASSY PT7

SYMBOL

B48K142-200
MODEL HL-1260e 54T-U01-770/771 T/I NO. PR97148, PR98054, PR98061

16. DOCUMENTS

MODEL HL-1260e 54T-U01-920

TI No.96-P044 / 97-P009

17. PACKING MATERIALS
MODEL HL-1260e 54T-U01-930
16. DOCUMENTS REF.NO. CODE 1 UKUKUKUKUKUKUKUHUHUHUHUHUKUKUKUKUKULUHULULUHUE163528001
DESCRIPTION REMARK PR DRIVER DISK #1, HL-1260E(FIRST PART 1/2) PR DRIVER DISK #2, HL-1260E(LATTER PART 2/2) OP EXPLANATION DISK, ENG HL-1260e OP EXPLANATION DISK, DEU HL-1260e OP EXPLANATION DISK, FRA HL-1260e OP EXPLANATION DISK, NLD HL-1260e OP EXPLANATION DISK, NOR HL-1260e USER'S MANUAL, ENG USER'S MANUAL, DEU USER'S MANUAL, FRA USER'S MANUAL, NLD USER'S MANUAL, NOR PR DRIVER SET UP, ENG HL-1260e PR DRIVER SET UP, DEU HL-1260e PR DRIVER SET UP, FRA HL-1260e PR DRIVER SET UP, NLD HL-1260e PR DRIVER SET UP, NOR HL-1260e WARRANTY CARD, USA WARRANTY CARD, CAN WARRANTY CARD, FRA2 WARRANTY CARD, DUTCH SERVICE CARD 2, USA EPA INSERTION SHEET, USA BAG, 215X350H (USER'S MANUAL) CAUTION LABEL, BS MODEL HL-1260e 54T-U01-920 TI NO. 96-P044 / 96-P063 / 97-P009 / 97-P020 / 97-P038

Q'TY 1

17. PACKING MATERIALS REF.NO. CODE Q'TY 1 UE1 UE2 UE3 UE3 UE4 UE5 UH6 UH7 UE8 UE8 U9 UU11 X12 UH12 UH13 UE13 UE14 UE15 UH2741001 1
DESCRIPTION CARTON, US W/EP-ED HL-1260e CARTON, EU W/EP-ED HL-1260e STYROFOAM PAD ASSY CARTON, TNR CARTRIDGE (W/CARTRIDGE) CARTON, TNR CARTRIDGE (W.O/CARTRIDGE) STYROFOAM PAD (PLATE HOLDER) RELEASE SPACER R RELEASE SPACER L PAD (CONTROL PANEL) BAG, 900X800 (BODY) BAG, 900X800 BS W/HOLE (BODY) CAUTION LABEL 24, US CAUTION LABEL BS IMPORTER LABEL, CAN RECYCLE LABEL, DEU/FRA BAR CODE LABEL, 524236 UPC USA 1260e BAR CODE LABEL, 525480 EAN EU 1260e PAD (LETTER SIZE TRAY) PAD (A4 SIZE TRAY) POSITION FIXING SPONGE INSERTION SHEET

18. OPTIONAL PARTS SET

TI NO. 97-P066

54T-U01-940

19. ADJUSTING TOOL KIT

43-D,N,O

54T-U01-99A

T/I NO. PR98047

18. OPTIONAL PARTS SET REF.NO. CODE Q'TY 1 UH2 UH3 UH4 UH5 UE5 UE6 UH2823001 1
DESCRIPTION PAPER PICK-UP ROLLER UNIT 2 (SP) SEPARATION PAD SPRING DX (SP) SEPARATION PAD DX ASSY (SP) ADJUST KNOB STOPPER (SP) CARTON, US W/EP-ED HL-1260 (SP) CARTON, EU W/EP-ED HL-1260 (SP) SPACER
MODEL HL-1260e 54T-U01-940 TI NO. 97-P066, PR98065 19. ADJUSTING TOOL KIT TOOL NO. ZX-1 ZX-9 ZX-10 ZX-11 ZX-12 ZX-13 ZX-14 ZX-29 ZX-31 ZX-43D ZX-43N ZX-43O ZX-44 ZX-46 ZX-78A ZX-87 ZX-96 ZX-164
TOOL NAME PLIERS (150MM) SCREWDRIVER (75MM) SCREWDRIVER (70MM) SCREWDRIVER (4.7X270MM) SCREWDRIVER, (6.2X200MM) SCREWDRIVER, PHILLIPS (NO-1) SCREWDRIVER, PHILLIPS (NO-2) HOOK FOR SPRING TWEEZERS (150MM) LUBRICATING GREASE(SILICON G,KS64F 0.1KG) LUBRICATING GREASE(MOLYKOTE EM-30L TKC-0) 1KG LUBRICATING GREASE(MOLYKOTE D110) 1KG OILER TESTER (MD-200C) BAR TENSION GAUGE (0.1-5KG) THICKNESS GAUGE (0.28-0.38MM) IC PULL OUT (P42) PF UNIT SETTING JIG
MODEL HL-1260e 54T-U01-99A T/I NO. PR98047

5.2 Storage of Unsealed EP-ED Cartridges
Each EP-ED cartridge contains a photosensitive drum that has an organic photoconductor (OPC) which deteriorates when exposed to strong light. It also contains toner. The user, therefore, should be fully informed about the correct storage and handling of EP-ED cartridges. (1) Storage requirements 1) 2) Avoid places exposed to direct sunlight or near a window. Do not leave an EP-ED cartridge in a car in warm or hot weather even if it is in its storage box. Avoid places with a too-high or too-cool temperature and/or humidity. Also avoid places exposed to sudden temperature or humidity changes (such as near an air conditioner outlet). Avoid dusty places or places exposed to ammonia fumes or other harmful fumes. Do not store an EP-ED cartridge in a temperature above 40C.

3) 4) (2)

EP-ED cartridge life The effective life of an EP-ED cartridge is 2.5 years from the date of manufacture (printed on the cartridge.) The expiry year and month (date of manufacture plus 2.5 years) is shown on the EP-ED cartridge box. An EP-ED cartridge used after the expiry may produce low-quality printing, so a cartridge should be used within the stated period.

I - 10

This chapter describes the printer functions, the relationship between the electrical systems and mechanical systems, and the timing of operations. Striped conduits ( ) indicate mechanical linkages; solid thin arrows ( ) appearing with a signal name indicate the transmission of single control signals and outlined thick arrows ( ) indicate the transmission of groups of signals.

1. BASIC OPERATIONS

1.1 Mechanical Configuration
The printer functions can be divided into four blocks: the laser/scanner system, the image formation system, the paper pick-up/feed system and the control system.

Expansion memory (SIMM)

Font cartridge/card

Optional I/O (MIO)

Main PCB

Control panel

CONTROL SYSTEM

IMAGE FORMATION SYSTEM

Photosensitive drum Cleaning unit Developing unit

Laser/scanner unit

LASER/SCANNER SYSTEM

Transfer separation unit

Delivery rollers

Fixing unit

MP tray

Feeder

Tray 1

Tray 2 (Option)

0 -100

Surface potential (V)

Time (t)

Exposed area -500 Unexposed area
Primary charge (step 1) Scanning exposure (step 2) Transfer (step 4) Primary charge (step 1)

Figure 2.8

II - 6

Step 1 Primary charge

,,, ,,,,, ,,,, ,,, ,,,,, , ,,, ,,,, ,,,, , ,,, ,, ,,, ,,,, ,,,, ,,,,,, ,, ,,,,,,,,,,,,,, , ,,,,,,,,,

Figure 2.9

AC bias

DC bias

As preparation for latent image formation, a uniform negative potential is applied to the photosensitive drum surface. The printer uses the charging method that directly charges the drum for the primary charge. The primary charging roller consists of conductive rubber. In addition to DC bias, AC bias is applied to the primary charging roller to keep the potential on the drum surface uniform. This DC bias is changed with the developing DC bias. This charging method has advantages such as lower applied voltage, less ozone generation, etc., compared with the corona charge system.

Step 2

Scanning exposure

Laser beam

Exposed area

Unexposed area

Figure 2.10
When the laser beam scans the drum surface, it causes the charge to be neutralized in the areas struck by the beam. Areas on the drum with no charge form the electrostatic latent image.

II - 7

Developing stage Development places particles of toner onto the areas of the drum that have been cleared of charge by the laser beam. This makes a visible image. This printer uses the toner projection development method with a single-component toner.

Step 3

Development

Stirrer

AC bias DC bias
Developing cylinder Cylinder Magnet
Figure 2.11 Note: The charges on the light areas on the photosensitive drum are shown as positive in this figure. Actually they are negative, but they are more positive than the developing cylinder and explanation is simplified by regarding them as positive. As shown in Figure 2.11, the developing unit consists of a developing cylinder and rubber blade. The developing cylinder rotates around a fixed internal magnet. The single-component toner consists of magnetite and a resin binder, and is held to the cylinder by magnetic attraction. The toner is an insulator, and acquires a negative charge by friction due to the rotation of the cylinder. The areas on the drum that were exposed to the laser beam have a higher potential (are less negative) than the negatively charged toner particles on the developing cylinder. When these areas approach the cylinder, the potential difference projects the toner particles onto them. This is called toner projection, and the latent image on the drum becomes visible.
Developing cylinder surface potential +V

Voltage (V)

Drum surface potential (exposed area) DC bias

-V Time t

Drum surface potential (unexposed area)
Figure 2.12 An AC bias is applied to the developing cylinder to help project the toner particles to the drum surface and improve the contrast of the printed image. The center voltage of the AC bias (1600 Vp-p) varies with the DC bias voltage. The IMAGE DENSITY ADJUSTMENT signal (sent from the Engine CPU to the high-voltage power supply) changes the DC bias, and thus the potential difference between the cylinder and drum. This changes the density of the print. This printer has a stirring mechanism to supply toner in the cartridge smoothly to the cylinder. II - 8
Transfer stage In the transfer stage, the toner image is transferred from the drum surface to the paper.

Step 4

Transfer

Transfer charging roller

Figure 2.13 A positive charge applied to the back of the paper attracts the negatively charged toner particles to the paper. The printer accomplishes transfer by using the charging roller method. Advantages compared with the corona transfer method are as follows: Low transfer voltage that is less than half that for corona transfer. Less ozone generation. The paper is supported by the transfer charging roller and photosensitive drum, so feed is more stable.
Reference: If the image on the photosensitive drum is not completely transferred to the paper due to jamming, etc., the toner may adhere to the transfer charging roller. The printer removes the toner from the transfer charging roller by switching the transfer voltage between positive and negative in sequence. During wait, initial rotation, and last rotation, the printer sets the primary DC voltage to zero, and sets the charge on the drum to zero. In this case, the transfer voltage is made negative to remove the negatively-charged toner on the transfer charging roller to the drum. The transfer charging roller is thus cleaned. Step 5 Separation
Photosensitive drum Paper
Static charge eliminator Transfer charging roller
Figure 2.14 The stiffness of the paper causes it to separate from the drum. (Curvature separation) To stabilize the paper feed and prevent small white circles from appearing in the printed image at low temperature and humidity, the charge on the back of the paper is reduced by the static charge eliminator after transfer.

II - 9

Fixing stage The toner image transferred to the paper in the transfer stage is held only by electrostatic attraction and slight physical adhesion, so even a light touch will smear the image. In the fixing stage, the toner image is fixed by heating the paper and applying pressure. This fuses the toner particles to the paper to make a permanent image.

Step 6

Fixing

Upper fixing roller

Halogen heater

Toner Paper

Lower fixing roller
Figure 2.15 The upper roller surface is PFA-coated. The upper and lower roller surfaces are grounded via a diode to prevent the negative potential of the upper roller becoming higher than that of the lower roller, resulting in the toner being drawn to the lower roller, and adhering to the lower roller surface. 3.2.5 Drum cleaning stage In the transfer stage, not all the toner is transferred to the paper. Some remains on the photosensitive drum. This residual toner is cleaned off in the drum cleaning stage so that the next print image will be clear. Step 7 Drum cleaning

Cleaning blade

Cleaner container

Sweeper strip

Figure 2.16 Prior to the next printing, the residual toner on the drum surface is scraped away by the cleaning blade to clean the drum surface. The removed toner is collected in the cleaner container.

II - 10

3.3 Operation
When the engine controller circuit receives a print signal (PRINT) or a pre-feed signal (PRFD) from the video controller circuit, the engine controller circuit drives the main motor to rotate the photosensitive drum. After the drum surface is charged negatively by the primary charge roller, the laser beam modulated by a DATA signal scans the drum surface to from a latent image on the drum. The latent image formed on the drum surface is converted into a visible image by the toner on the developing cylinder and then image is transferred onto the paper by the transfer roller unit. Then the residual toner is removed from the drum surface with the cleaner blade. The cartridge also has a toner sensor. When the output from this sensor falls below a certain level, it warns that the EP-ED cartridge will be out of toner with an alarm.
Reflection mirror Scanner unit Laser beam
Laser diode drive signal (DATA)

EP-ED cartridge

Transfer roller
Primary charge (AC) drive (HV1AC) Main PCB Primary charge (DC) drive (HV1DC) Developing bias (AC) drive (DBAC) Developing bias (DC) drive (DBDC) Transfer charger 1 drive (HVT1) Transfer charger 2 drive (HVT2) Transfer charger 3 drive (HVT3) Transfer charger 4 drive (HVT4) Toner sensor signal 1 (TONER 1) Toner sensor signal 2 (TONER 2) High-voltage power supply PCB

Figure 2.17

II - 11
4. PAPER PICK-UP/FEED SYSTEM

SP12 C125

C124 #40

C114 C98 C82 C73 C65

HM514800

C154 PST591DMT

C110 R92

R114 C141 C123 R110

C143 #42

CP6 C122

C112 C120 C113 R98

C109 R89

74LS244

74F04 2

R52R51 RA25 RA24

#12 #19

DRAM block

SIMM block

Option I/F connector

P15 0P

B48K158-3

(25) A25 B25 (50)

GND VCC

RA13 RA12 RA11

74ALS 1034

CARTRIDGE

ADM202JRN

RA16 RA15 RA14

Font cartridge connector

C127 R111

III - 6

1.3 Engine Controller Circuit

Scanner Unit

Transfer roller High-Voltage Power Supply Assy

Developing cylinder

Toner sensor
Engine Controller Circuit

Pick-up Solenoid

MP Tray Pick-up Solenoid Paper Feeder PCB Pick-up Motor Detectors

Main Motor

Fixing Unit
Low-Voltage Power Supply Assy
Figure 3.5 Engine Controller Block Diagram
Components in the Circuit (refer to the next page) A. Engine Control CPU B. Low-Voltage Power Supply Connector C. Fuser Unit Control C-1. Heater Drive Circuit C-2. Heater Temperature Input Signal C-3. Paper Eject Input Signal D. Paper Feeder PCB Control Signals and Connector E. Option Interface Circuit and Connector F. High-Voltage Power Supply Control Circuit and Connector G. Scanner Unit Control G-1. Scanner Motor Control Circuit G-2. Laser Diode Drive PCB Control Circuit H. Fan Motor Drive Circuit I. Main Motor Control Circuit J. Cover Open Detect Circuit K. Safety Door Switch Circuit III - 7
Figure 3.6 Main PCB Circuit III - 8

PAPER FEED DRIVE CIRCUIT

A. Connector to Main PCB B. Pick-up Motor Drive Circuit and Connector C. Pick-up Solenoid Drive Circuit and Connector D. Multi Purpose Tray Pick-up Solenoid Drive Circuit and Connector E. Sensors E-1. Tray1 Paper Empty Sensor E-2. Multi Purpose Tray Paper Empty Sensor E-3. Regist Sensor E-4. Pre-Regist Sensor E-5. Paper Detect Sensor in Duplex Unit F. Tray1 Paper Size Detect Switches Refer to the next page.

III - 9

P1(FEED MOTOR)
B48K140-1 P1(SIZE) PSIZE1 PSIZEPSIZE3 PSIZE4 0V SW1 SW2 SW3 SW4 0V

B48K139-1

MT A MT B MT C MT D 2 #1 SLA7027M +24VB +24VB 4 +24VB 0V C+5V +24VRET 3 +24VB

Paper feed guide upper

Paper pick-up roller assy
Separation pad assy Paper pick-up roller collars

Figure 4.24

(3) Remove the spring from the separation pad assy.

Separation pad assy

Separation pad spring

Figure 4.25

IV - 11

1.14 MP PE Sub Actuator

(1) Pull out the actuator upward from the MP tray assy (pay attention to the hook because it is fragile).

MP PE sub actuator

Figure 4.26
1.15 P Feed /Size-SW PCB Assy
(1) Put the 3 chassis L tabs to their original position.
Tabs 2 solenoid harness connector P feed/ size -SW PCB assy
Paper feed motor harness connector

Figure 4.27

(2) Unplug the 2 solenoid connector and the paper feed motor harness connector. (3) Loosen the 2 screws of the size-sw PCB.

1.16 Side-Switch Spring

(1) Pull out the size-switch spring.

Size-switch spring

Size-SW PCB

Figure 4.28

IV - 12
1.17 Regist sensor actuator
(1) Remove the actuator by shifting it to the left from the chassis hole.

Regist sensor actuator

Figure 4.29
1.18 MP Paper Detection Actuator
(1) Remove the actuator by removing the 2 bearings from the roller holder. This operation should be carried out with the PCB removed.
MP paper detection actuator

Roller holder

Figure 4.30
1.19 PE Sensor Actuator MP
(1) Pull out the actuator by shifting it to the right from the chassis hole.

PE sensor actuator MP

Figure 4.31

IV - 13

1.20 Tray Sensor Holder
(1) Disengage the DU (Duplex) detection actuator from the hook and slide it to the outside. (2) Loosen the screw and remove the holder by lifting it from the chassis. PE sensor actuator tray, PE actuator link, DU detection actuator 1) 2) 3) 4) Remove the PE actuator link from the PE sensor actuator tray. Remove the PE actuator link from the tray sensor holder. Remove the PE sensor actuator tray from the tray sensor holder. Remove the DU detection actuator from the tray sensor holder.
DU detection actuator Screw

PE actuator link Hook

PE sensor actuator tray Tray sensor holder

Clean the transfer roller right end bearing, the check continuity between the transfer roller power supply spring and the terminal of the high-voltage transfer unit. Is there continuity?

No Yes

Clean the contact to assure the continuity. Replace the high-voltage power supply assy.
Does print quality improve when the scanner unit is improved?
Replace the scanner unit or the harness.
Continued to the following page

VI - 4

Possible cause Development input signal error

Step 10

Check Do the pins 3, 4 and 5 of the connector P6 on the main PCB have the following value respectively when a sheet of paper is fed from the MP tray? P6-3 pin (DBAC) --- Change in voltage from 6V approx. to 0V just when a sheet of paper is fed from the registration unit. P6-4 pin (DBDC) --- Change in voltage from 9V approx. to 0V just when a sheet of paper is fed from the registration unit. P6-5 pin (DNSTY) --- Change in voltage to 2.5V just when a sheet of paper is fed. Is there any dirt on the cartridge side development terminal of the transfer unit and on the terminal of the high-voltage power supply development unit? (is there continuity between them?)

Result No

Remedy Replace the scanner unit or the harness.
Dirt on power supply terminal Failure in the development high-voltage circuit
Clean the contacts to assure the continuity.
Replace the high-voltage power supply PCB assy.
Possible cause Density setting

Step 1

Check Does printed image improve when density setting is changed on the control panel? Does printed image improve when the EP-ED cartridge is replaced? Does printed image improve when continuity is improved by cleaning the EP-ED cartridge grounding terminal and the printer unit grounding terminal? Do the pins 1, 2 and 5 of the connector P6 on the main PCB have the following value respectively when a sheet of paper is fed from the MP tray? P6-1 pin (HV1AC) --- Change in voltage from 6V approx. to 0V just when a sheet of paper is fed. P6-2 pin (HV1DC) --- Change in voltage from 9V approx. to 0V just when a sheet of paper is fed. P6-5 pin (DNSTY) --- Change in voltage to 2.5V just when a sheet of paper is fed. Is there any dirt on the cartridge side charging terminal of the transfer unit and on the terminal of the high-voltage power supply charging unit? (is there continuity between them?)

Result Yes No

Remedy Replace the control panel unit. Replace the main PCB assy, the switch flat cable or the control panel unit.
Malfunction of control panel LED lamps.
Possible cause LED lamps Control panel PCB Switch flat cable Main PCB
Check Dose the voltage of the following signals stay 0V while the "04 SELF TEST " is displayed after switching the power on and stay 5V for about 0.5 seconds after the message goes off? (Do the LED lamps turn on and off in response to the signal levels of 0V and 5V?) Signal LED1(ON LINE) LED2(READY) LED3(DATA) LED4(ALARM) Main PCB Panel PCB --- P1-9 P1-13 --- P1-15 P1-7 --- P1-21 P1-1 --- P1-16 P1-6
Remedy Replace the control panel unit. Replace the main PCB assy or the switch flat cable.

VI - 11

Malfunction of control panel switches.
Possible cause Mis-operation
Check Are the switchs operated according to the operation manual?
Remedy Operate the switches correctly following the operation manual. Replace the Main PCB assy. Replace the control panel unit or the switch flat cable.

Switch Control panel PCB

When a switch is pressed,does the voltage of the following signals change from 5V to 0V?
Signal SW8(SEL) SW7(MODE/EMULATION) SW6(FONT/ECONOMY) SW5(FORM FEED/FEEDER) SW4(SET/COPY) SW3(CONTINUE/SHIFT) SW2(DOWN/RESET) SW1(UP/TEST) Main PCB P1-8 P1-10 P1-12 P1-14 P1-16 P1-18 P1-20 P1-21 Panel PCB --- P1-14 --- P1-12 --- P1-10 --- P1-8 --- P1-6 --- P1-4 --- P1-2 --- P1-1
Switch flat cable Main PCB

Malfunction of buzzer

Possible cause Operational error
Check Is the "Buzzer on mode "selected according to the operation manual? (To alternate the buzzer on/off mode selection, press the MODE switch and select the "Advanced mode ".) Check the buzzer signal with a oscilloscope. Is the pulse of 4KHz output?
Remedy Set the buzzer on mode.

Main PCB Buzzer

Replace the main PCB assy. Replace the main PCB assy.
"12 COVER OPEN" is displayed even if the upper cover is closed
Possible cause Upper cover Main PCB
Check Does the upper cover hook press the actuator of the interlock switch on the main PCB correctly when upper cover is closed?

Result No Yes

Remedy Replace the upper cover assy. Replace the main PCB assy.

VI - 12

" CHECK XX TRAY " is displayed even if a paper-loaded cassette is mounted (or even if a paper is set on MP tray) XX is MP/T1/T2

Possible cause Mis-operation Actuator Paper empty sensor Feed flat cable Paper feed flat cable Main PCB
Check Is the paper feed mode set correctly? Does the actuator for the paper empty sensor operate smoothly? Does the voltage of P5-3 (or P5-14) in the Paper feeder PCB connector rise from 0V to 5V when the paper empty sensor is covered? Does the voltage of P3-3 (or P3-14) in the main PCB connector rise from 0V to 5V when the paper empty sensor is covered?

Result No No No

Remedy Set paper feed mode correctly. Reassemble or replace the actuator. Replace the paper feed/sizesw PCB assy or feed flat cable. Replace the feed flat cable. Replace the main PCB assy.
"14 NO CARTRIDGE " is displayed
Check Is an EP-ED cartridge installed correctly? Is the electrode of the transfer unit dirty?
Remedy Install the EP-ED cartridge correctly. Clean the electrode of the transfer unit. Replace the high-voltage power supply PCB assy. Replace the HV harness. Replace the main PCB assy.
Transfer unit electrode High-voltage power supply PCB HV harness Main PCB
Is the voltage of P4-13 in the high-voltage power supply PCB connector higher than that of P4-11 over 2.5V? Is the voltage of P6-13 in the main PCB connector higher than that of P6-11 over 2.5V?

VI - 13

"16 TONER EMPTY " is displayed
Check Take the EP-ED cartridge out of the printer and rock it to distribute the toner evenly. When the cartridge is returned to the printer, does the LCD show "00 READY"? Are the developing bias or the toner sensor electrode of the high-voltage power supply PCB assy dirty? Is the voltage of P4-13 in high-voltage power supply PCB connector higher than that of P4-11, when the EP-ED cartridge which is full with toner is installed? Is the voltage of P6-13 in the main PCB connector higher than that of P6-11?
Remedy The problem was caused by toner onesided due to too little toner remaining. Prepare to replace the new cartridge. Clean the electrode.

High-voltage electrode

High-voltage power supply PCB

HV harness Main PCB

Replace the HV harness.
Replace the main PCB assy.
"13 JAM XXXXXX" is not displayed even if a paper jam has occured (or is displayed even if a paper jam has not occurred) XXXXXX is TRAYS/INSIDE/REAR/DUPLEX.

Possible cause Actuator

Check Does the actuator of the paper delivery sensor or the registration sensor operate smoothly?
Remedy Reassemble or replace the paper delivery actuator and regist sensor actuator. Replace the fixing PCB assy or the paper feed/size-sw PCB assy.

Check Is the position of the adjustment lever of the cassette corresponding to the paper sheet size?
Remedy Instruct the user to follow the correct method.
Is a recommended type of paper being used ?
Instruct the user to use recommended type of paper. Replace the print paper. Instruct the user how to storage. Instruct the user not to load more than the maximum amount of paper. Replace the pick-up rollers. Replace the pad assy.
Is the print paper deformed, curled or wavy ?
Maximum paper load on the cassette Pick-up rollers Separation pad
Does the amount of paper loaded on the cassette exceed the specified maximum paper load? Are the pick-up rollers defomed or worn? Is the separation pad deformed or worn, or is it detached?
For solenoid activation, no feeder motor operation and no regist sensor activation, refer to the item NO PAPER PICK-UP FROM THE CASSETTE in the column MALFUNCTIONS.
Paper pick-up block ( Oblique feed jam )
Possible cause Adjustment lever (spring pressure switching lever) Paper front guide
Is the paper front guide set in the correct position? Are paper sheets set along the left wall?
Set the paper front guide. Instruct the user to set paper sheets correctly? Instruct the user to set it correctly?
MP-feeding paper sheet Cassette-feeding sheet guide. Cassette rear, side guide MP-feeding paper sheet MP sheet guide
Is the cassette rear side guide set correctly?
Is the MP sheet guide set correctly?
Instruct the user to set it correctly?

VI - 20

Separation and feed block (Paper jam)
Possible cause Print Paper Static-charge eliminator

Step 1 2

Check Is a recommended type of paper being used? Is the static-charge eliminator dirty?

Result No Yes No

Remedy Instruct the user to use recommended type of paper. Clean the static-charge eliminator. Replace the transfer base assy.
Fixing and paper delivery block (Paper jam)
Possible cause Fixing unit entrance guide Fixing unit Separation guide Paper delivery actuator Changeover guide Delivery rollers Paper jam remove cover Rear cover
Check Is the entrance guide dirty? Is the separation guide worn or deformed?
Remedy Clean the entrance guide. Replace the fixing unit.
Is the paper sensor arm movement smooth? Is the changeover guide movement smooth?
Replace the fixing unit. Replace the changeover guide. Replace the rear cover assy. Replace the jam remove cover and the rear cover assy.

Is the delivery roller movement smooth? 5 Are there dirts or flaws on the ribs of the jam remove cover and rear cover?

VI - 21

5.2 Incomplete Paper Feed

Double feeding

Possible cause Print paper
Check Is a recommended type of paper being used? Is the position of the adjustment lever of the cassette corresponding to the paper sheet size? Is the paper front guide broken?

Result No No

Remedy Instruct the user to use recommended type of paper. Instruct the user to switch adjustment lever position. Replace the paper front guide. Replace the separation pad.
Adjustment lever (spring pressure switching lever) Paper front guide Separation pad

Wrinkles

Check Is a recommended type of paper being used? Is the wrinkle problem solved if fresh paper is used? Is the paper already wrinkled or being fed askew? Is the entrance guide dirty?
Remedy Instruct the user to use recommended type of paper. Instruct the user in correct print paper storage procedure to be free from moisture. Check the motion of the paper-pick up block. Clean the entrance guide. Replace the fixing unit.
Paper pick-up block Fixing unit entrance guide Fixing unit

VI - 22

OPERATION
6.1 Line Inspection Mode Procedure
(1) Mount the font cartridge, the flush memory card and the optional MIO board. Note: (2) Use a Hewlett Packard Company C2053A#C01 Word Perfect as font cartridge. switch, turn the power on. LINE TEST switch to check if the LCD comes on. All the LCD elements will come on simultaneously. (4) Press the CONTINUE switch to check the pushbutton switch.
While pressing the The LCD will display:

Press the

All the LEDs will go out and the LCD will display the characters shown below: Press all the switches by turns.

XXXXXXXX

Switch key numbers 7 8
(5) Press the CONTINUE 2MB XXMB switch to check RAM size. 2M (standard) XX : SIMM capacity + 2M In case of error switch to check the fan. Make sure that the fan rotates at the high speed. switch. Make sure that the fan rotates at the low speed. switch to check the 1st stage cassette. Appears when the cassette is set to A4 size. Appears when the cassette is set to letter size. Appears when no cassette is set. Appears in case of error. switch to check the 2nd stage cassette. Appears when the cassette is set to A4 size. Appears when the cassette is set to letter size. Appears when no cassette is set. Appears in case of error. switch to check multi purpose tray. Set paper on the MP tray.

UK2495000 B48K158/159CIR(5/8)
Appendix 8. Main PCB Circuitry Diagram (6/8)
UK2495000 B48K158/159CIR(6/8)
Appendix 9. Main PCB Circuitry Diagram (7/8)
UK2495000 B48K158/159CIR(7/8)
Appendix 10. Main PCB Circuitry Diagram (8/8)
UK2495000 B48K158/159CIR(8/8)
Appendix 11. Control Panel PCB Circuitry Diagram (1/1)

UK2527000 B48K143CIR

Appendix 12. Scanner LD PCB Circuitry Diagram (1/1)

UK2674000 B48K165CIR

MODEL:HL-1260e/1660
Trademarks: BR-Script, DX-1200 and DX-1600 are registered trademarks of Brother Industries, Ltd. Centronics is a registered trademark of Genicom Corporation. PostScript is a registered trademark of Adobe Systems Incorporated. IBM Proprinter XL is a registered trademark of International Business Machines Corporation. EPSON FX-850 is a registered trademark of Seiko Epson Corporation. HP-GL and HP Laser Jet 4 are registered trademarks of Hewlett Packard Company. Windows 3.1 is a registered trademark of Microsoft Corporation in the U.S. and other countries.
This service manual contains basic information required for after-sales service of the laser printer (hereinafter referred to as this machine or the printer). This information is vital to the service technician in maintaining the high printing quality and performance of the printer. This manual consists of the following chapters: Chapter I : General Features, specifications, etc. Chapter II : Theory of Operation Basic operation of the mechanical system and the electrical system, and their timing. Chapter III : Electrical System Theory of the electronics circuit Chapter IV : Mechanical System Requirements for a suitable location, disassembling and reassembling procedure of
mechanical system. Chapter V : Maintenance and Servicing Parts replacement schedule, list of tools, lubricants and cleaners. Chapter VI : Troubleshooting Reference values and adjustment, troubleshooting for image defects, troubleshooting for malfunctions, etc. Appendices : Note: Engine Block Diagram, PCB Circuitry Diagrams, etc. This service manual of the printer (HL-1260e/HL-1660) describes only different parts from the each part of the service manual (No.54T039NE0) which was published before. We omit the same parts with that of HL-1260 and describe the effect of it in contents. When you find the omitted parts, please refer to the service manual of that model.
FEATURES.... Refer to HL-1260 (P.I-1) SPECIFICATIONS.... I-1 SAFETY INFORMATION.... I-6 3.1 Laser Safety (110 - 120V Model only)... I-6 3.2 CDRH Regulations (110 - 120V Model only).. I-6 3.3 Additional Information.... I-7 PARTS OF THE PRINTER... Refer to HL-1260 (P.I-8) 4.1 External Views... Refer to HL-1260 (P.I-8) 4.2 Cross Sectional View... Refer to HL-1260 (P.I-9) STORAGE AND HANDLING OF EP-ED CARTRIDGES. Refer to HL-1260 (P.I-10) 5.1 Storage of Sealed EP-ED Cartridges.. Refer to HL-1260 (P.I-10) 5.2 Storage of Unsealed EP-ED Cartridges. Refer to HL-1260 (P.I-10)

1 C179 C175 C171

C161 C165

SP6 SP4 CP 5 C149 R102

C156 C145 R109 C142 R98 R97 C140
SP5 C159 C151 C160 C155 C152 C150 R104 C 147 C144 R 99 C141 C139

C180 C176 C172 C170

R131 RA76 C174 R117 R121 C164 C168 C146

R112 C154

R111 C153
P13 CDCC L9 C158 D7 L8 C178 C173 R116 R115 C163 C162 C157 R110 R130 R127 R129 R108 R128 R125 R124 R107 R120 R119 R118 RA68 C167 R114 C166 C113
Q24 SP3 CP1 XT4 L7 C136 C137 R94

POW FAN

RA73 RA 74

R A71 RA72C169

9.8304MHZ 1

156 157

C117 C93
RA66 RA62 RA59 RA35 RA43 RA40 RA30 RA29 21

HG51C265FD

RA60 RA56

R96 C134 C131

28 C126
C130 R 92 C127 R93 R91 R90

RA57 RA53

15 C125

C128 RA52 RA48

R89 RA50 RA51

C121 R87 C120

R83 R84 R85 R86

Q23 XT3

16.45253MHZ

R68 R69 R70

35 CC104

C118 R63

R80 R81 R82

C114 C115 22

R77 R65 R78 R66 R79 R67

R71 R72 R73

R56 R74 R57 R75 R76

R55 R53 C107 R54

ZD2 ZD1 C105 RA41

(WHITE) FUSER

53 R60 RR61 R59 R62 C108

15 RA45 RA39 C103

RA42 RA38

R49 C98 R48 C96

C102 C101 R51 R50

C100 RA37 79R3041

RA35 C97 C89 RA34 RA31 RA32
R47 C92 R46 C91 C90 C84 C88

RA33 F245

SCN FAN SCNMTR P9 SCNL SR P7 MTR (RED) 2 1

C86 C16 B16 A16

CH8 RST

C81 C80

RA24 RA25

RA27 RA22

1 CP1 CUT SP2 SHORT 2 R65,R67 RMV R66,R78 ADD

CP2 SP7

5. 00MHZ XT1

C66 R32

R41 R40 R39 R37 R35 C65
C77 R45 R44 R43 C73 C72 R42 L3

B48K259 -2

D4 D3 QRA15

R27 R26 CH4

RA19 RA18

C51 CH5

R38 L2 R36 R34 C62 C64 R31 C61 C59 C57 C52 C54 C53 R25 C47

W4 SHORT FLSH

P19 P6
Q14 Q11 Q9 Q7 Q15 Q12 Q10 Q8

41 CH6

RA14 RA13

R23 94V-0

C42 RA10 RA9

R24 FLOCK GND

C45 C44
R20 R17 R15 R14 R13 R11 C37 C36 C35 C33 D2 R16 D1

+24V +5V +5V

R12 CH1 C32

R22 C39R21 R19R18

HEAT R10

P. FEED

R8 C29

C28 C27 C25