Service Source

K

LaserWriter Plus

LaserWriter, LaserWriter Plus

Service Source

K

Basics

LaserWriter Plus

Basics

General Information - 1

General Information

This manual contains only an exploded view and parts

information for the LaserWriter and Laser Writer Plus.

The take apart procedures are in the form of a Paperless

Printer file located on the Service Source CD. Click the

button below to launch this file.

LaserWriter Plus

Take Apart

LaserWriter

Wiring Diagram 110V

115V

J212-5

BK
W

BK

BL

BR
GNN

N F 1

L
E
N

POWER INTERLOCK ASSEMBLY

Main Switch

Noise Filter

BR

BL

SW1

X

F205

F205

CB1

F250

TB19

GN

BK

W

TB22

SEPARATION

PLATE

TB13

TB20

TB21

-1

-1

-2 -3

-4

-4

-2 -3

BK

W

MS1

MS2

TB15

DOOR
SWITCH

TB101
TB102

FUSER

ASSEMBLY

TH1

THERMISTOR

FUSER ROLLER

HEATER H1

F187

TP1

F187

THERMOPROTECTOR

J101-1

J101-2

SQ1

J105-7 J105-3

T2

T1

W

Q1

J105-5

J2-1

J2-2

J105-1

J105-2

J103-1
J103-2
J103-3

BK

W

BK
W

(115V only)

AC CONTROLLER PCB

FUSER ROLLER HEATER

SAFETY PCB

TBS -4 -3 -2 -1

LA1 LA2 LA3 LA4 LA5

TM1

RECONDITIONING EXPOSURE
LAMPS & PRINT COUNTER PCB

TB17

GN

TB16

PT1

OV

100V

LINE

VOLTAGE

TRANS-

FORMER

J503-2 BR

J503-3 BR

J503-5 BK

J503-6 R

MAIN MOTOR

J501-1

J501-2

J501-3

J501-4

J501-5

J501-6

J501-7

M 1

- + GND

J2-4

J2-3

J104-1

J104-2

J104-3

AC DRIVER PCB

J212-1

J212-2

J212-3

J212-4

FSRD

+24V(R)

GND

FSR

TH

GND

J102-1

J102-2

BK

W

FM1

FAN

GN/Y

J203

OPTICAL FIBER

BEAM

POSITION

SENSOR

DC CONTROLLER PCB

G

J1-1

J1-2

CONNECTOR

MOUNT PLATE

CROSS MEMBER

(RA1-0664)

PRINT DENSITY

ADJUSTMENT DIAL

J502-12 P J208-12

J502-11 SB J208-11

J502-10 V J208-10

J502-9 R J208-9

J502-8 BL J208-8

J502-7 BR J208-7

J502-6 BL J208-6

J502-5 GY J208-5

J502-4 R J208-4

J502-3 BL J208-3

J502-2 R J208-2

J502-1 Y J208-1

J10-1 J215-1

TG +

TG -

GND

MOT

OR

AC33V

AC12V

AC21V

DRMD

+24V(UA)

GND(UA)

+30V(UB)

-5V

GND

+5V

GND

+24V(R)

HVRST

ACP

TG

DC POWER

SUPPLY &

MAIN MOTOR

DRIVE PCB

MS3

C

NO

F110

(Middle)

MS4

NO

F110

(Lower)

MS8

NO F110

(Upper)

DRUM SENSITIVITY

IDENTIFICATION

MICROSWITCHES

CARTRIDGE

SENSOR

J4-1
J4-2
J4-3

PS1

OV

+24V

PICKUP SENSOR

REGISTRATION SHUTTER SOLENOID

MANUAL PICKUP ROLLER SOLENOID

F110

F110

SL1

SL2

DRMD
+24V(UA)
GND(UA)
+30V(UB)
-5V
GND
+5V
GND
+24V(R)
HVRST
ACP
TG

CSENS1

CSENS2

CEMP

LPCK

GDN
PFS
+24V(R)

+24V(R)

J209-1

J209-2

J209-3
J209-4

J209-5
J209-6

J209-7

J210-5
J210-6
J210-7

J210-1
J210-2
J210-3
J210-4

MPUSD

RGSD

PS2

OV

+24V

PAPER SENSOR

J5-1
J5-2
J5-3

CASSETTE PICKUP

ROLLER CLUTCH SOLENOID

J10-2 J215-2

J10-3 J215-3

J10-4 J215-4
J10-5 J215-5
J11-1 J214-1
J11-2 J214-2
J11-3 J214-3
J11-4 J214-4

J11-6 J214-6

J11-5 J214-5

F110

F110

F110

(Upper) MS5

(Middle) MS6

(Lower) MS7

CASSETTE

SIZE

MICRO-

SWITCHES

CASSETTE FEEDER

PEMP
+24V(R)
CPUSD
+24V(R)
PSIZE1

PSIZE2

PSIZE3

SL3

B2

TB25

A3 A4

A2

A5

TB23

A1

B1

B3

B4

J16-25
J16-24
J16-23
J16-22
J16-21
J16-20
J16-19
J16-18
J16-17
J16-16
J16-15
J16-14
J16-13
J16-12
J16-11
J16-10
J16-9
J16-8
J16-7
J16-6
J16-5
J16-4
J16-3
J16-2
J16-1

J52-34
J52-33
J52-32
J52-31
J52-30
J52-29
J52-28
J52-27
J52-26
J52-25
J52-24
J52-23
J52-22
J52-21
J52-20
J52-19
J52-18
J52-17
J52-16
J52-15
J52-14
J52-13
J52-12
J52-11
J52-10

J52-9
J52-8
J52-7
J52-6
J52-5
J52-4
J52-3
J52-2
J52-1

LED7

FG

J12-23

J12-8

J12-20

J12-6

J12-5

J12-4

J12-3

J12-2

I/O CONNECTOR UNIT

J13-5
J13-9
J13-4
J13-8
J13-3
J13-7
J13-2
J13-6
J13-1

RS232/422

SERIAL PORT CABLE

J12-1

B5

I/O PCB

DC POWER SUPPLY

(VIDEO CONTROLLER PCB)

NF2

4 3

2 1

NOISE

FILTER

TRANSFORMER

PT2

J15-2

J15-1

R

R

R

R

J17-1

J17-2

AC25V

PW1

BR
BR

BL
BL

+5V
+5V

GND
GND

J14-4
J14-3

J14-2
J14-1

I/O PCB

J204-1 TB3-1
J204-2 TB3-2
J204-3 TB3-3
J204-4 TB3-4
J204-5 TB3-5
J204-6 TB4-1
J204-7 TB4-2
J204-8 TB4-3

RDYL

PEMPL

JAML

+5V

DISPLAY

UNIT

DELIVERY

SENSOR

LASER UNIT

+24V(UA)

LSRHD

LSRTH

GND

+5V

LD

PD

DSADJ

J206-1 J401-1
J206-2 J401-2
J206-3 J401-3
J206-4 J401-4

+24V(R)

GND

SCNRDY

SCNON

SCANNER

UNIT

LED 1
LED 2
LED 3
LED 4
LED 5
LED 6

GND
PDP
+24V

PS3

GND

PDDP

+24V(R)

J216-1 J5-1

J216-2 J5-2
J216-3 J5-3

J201-2 TB18-2

J201-3 TB18-3

J201-4 TB18-4

J201-1 TB18-1

J207-1 -2 -3 -4 -5 -6

J51-3 J202-3

J51-4 J202-4

J51-5 J202-5

J51-6 J202-6

J51-7 J202-7

J51-8 J202-8

J51-9 J202-9

J51-10 J202-10

J51-1

1 J202-1

1

J51-12 J202-12

J51-13 J202-13

J51-14 J202-14

J51-15 J202-15

J51-16 J202-16

J51-17 J202-17

J51-18 J202-18

J51-19 J202-19

J51-20 J202-20

J51-21 J202-21

J51-22 J202-22

J51-23 J202-23

J51-24 J202-24

J51-25 J202-25

J51-26 J202-26

J51-33 J202-33

J51-34 J202-34

BD

BD

PPRDY

PPRDY

RET

RDY

RDY

RET

VSREQ

VSREQ RET

SBSY

SBSY

RET

SC

SC RET

SCLK

SCLK RET

CBSY

CBSY

RET

PRNT

PRNT

RET

VSYNC

VSYNC RET

CPRDY

CPRDY

RET

VDO

VDO

SG

SG

LASERWRITER I/O BOARD

J22

-2

VZ1 R1 VR1

F110

DRUM

F110

F110

R

F187

TB7

T

ONER

CAR

TRIDGE

PRIMARY

CORONA

ASS'Y

DEVELOPING CYL

TB6

J7-1

J7-2

J9

TRANSFER
CORONA
ASSEMBLY

TRANSFER
GUIDE

W

W

GN

J5

J3
J4

J21-2

TRANSFER (+)

TB8

R2

VARISTOR

GN

J22-1

VARISTOR PCB

PRIMARY

(–)

HIGH VOLTAGE

POWER SUPPLY

GND

DEVELOPING BIAS

VRZ

R J610-3

Y

J610-2

BL

J610-1

+24V

PRINT

DENSITY

ADJUSTMENT

GND

J23-1
J23-2
J23-3

J23-4

J601-1 J21

1-1

J601-2 J21

1-2

J601-3 J21

1-3

J601-4 J21

1-4

J601-5 J21

1-6

J601-7 J21

1-7

J601-8 J21

1-8

J601-5 J21

1-5

GND

HVTR

NC

DBDC

DBAC

+24V

VRST

HVPR

GND

HVTR

NC

DBDC

DBAC

+24V

VRST

HVPR

J21-1

Service Source

K

Exploded View

LaserWriter Plus

Exploded View

1

970-1182
Top Shield Frame

970-1183

Bottom Shield Frame

970-1112
(White)
Right Panel

661-0267
DC Controller PCB

Front Panel
970-1113 (White)
970-1298

(Platinum)

Toner
Cartridge

970-1142 (White)
970-1299
(Platinum)
Cassette Door

699-0323

Registration Shutte Assy

970-1110

(White)

970-1295

(Platinum)

Left Panel

970-1111 (White)

970-1296 (Platinum)

Rear Panel

661-0266

High-Voltage

Power Supply

970-1035

Varistor PCB

Left-Side Frame

(Not Offered)

Fan Cove

(Not Offered)

720-0502

Fan

971-1001

Ozone Filter

970-1069

Wire Harness Cover

970-1021
Transfer Corona Assy

970-1149
Transfer Guide Assy

970-1005
Paper
Separator

Belt

971-0037

Feeder Guide Assy

970-1020
Preconditioning
Exposure
Assy

970-1143

Power Interlock Cover

Upper MainBody

(not offered)

661-0436 (LW)
661-0437 (LW+)

LaserWriter I/O Board

661-0273
DC Power Supply/
Motor Drive PCB

970-1109
Display
Panel Assy

661-0268

AC Driver PCB

661-0450 (115 V)

Fuser Assy

970-1267 Front Latch

970-1009

Main Motor

Assy

810-0608 (White)
810-0610 (Platinum)

Top Cover

699-0324 (110 V)

Power Interlock Assy

661-0278
Scanner Unit

970-1272
Manual Paper
Feed Plate

970-1019

Separation/Feed

Roller Assy

970-1194

I/O Plate

661-0277
Laser

LaserWriter & LaserWriter Plus Exploded View

L

W it

& L

W it

Pl

E

l d d Vi

I/O Board Power Supply
661-0323