Apple Laserwriter Plus Service Manual

K

Service Source

LaserWriter Plus

LaserWriter, LaserWriter Plus

K

Service Source

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

POWER INTERLOCK ASSEMBLY

Main Switch

SW1

CB1

BR

L

GNN

E
N

BL

TB19

CONNECTOR

MOUNT PLATE

TB13

CROSS MEMBER

(RA1-0664)

BK

F250

SEPARATION

PLATE

TB20

X

TB21

F205F205

Noise Filter

BR
BL

GN

MAIN MOTOR

M 1

J503-2 BR

J503-3 BR

J503-5 BK

J503-6 R

J501-1

J501-2

J501-3

J501-4

TG +

TG -

GND

MOTOR

AC33V

AC12V

DC POWER

SUPPLY &

MAIN MOTOR

DRIVE PCB

DRUM SENSITIVITY

IDENTIFICATION

MICROSWITCHES

CARTRIDGE

SENSOR

PICKUP SENSOR

REGISTRATION SHUTTER SOLENOID

MANUAL PICKUP ROLLER SOLENOID

PAPER SENSOR

ROLLER CLUTCH SOLENOID

CASSETTE

SIZE

MICRO-

SWITCHES

(Middle)

(Lower)

(Upper)

PS1

PS2

CASSETTE PICKUP

(Upper) MS5

(Middle) MS6

(Lower) MS7

CASSETTE FEEDER

N F 1

J501-5

J501-6

MS3

MS4

MS8

GN/Y

BK
W

TB15

TB17

GN

TRANS-

FORMER

J501-7

DRMD
+24V(UA)
GND(UA)

AC21V

+30V(UB)

-5V

GND

+5V

GND

+24V(R)

HVRST

ACP

TG

C

F110

NO

NO F110

F110

NO

OV

+24V

SL1

SL2

OV

+24V

SL3

F110

F110

F110

TB22

-1

-1

TB16

OV

100V
115V

LINE

VOLTAGE
PT1

DOOR
SWITCH

-2 -3
MS1

-4

BK

TB101
TB102

W

MS2

-4

-2 -3

BK
W

BK
W

J502-1 Y J208-1
J502-2 R J208-2
J502-3 BL J208-3
J502-4 R J208-4
J502-5 GY J208-5
J502-6 BL J208-6
J502-7 BR J208-7
J502-8 BL J208-8
J502-9 R J208-9
J502-10 V J208-10
J502-11 SB J208-11
J502-12 P J208-12

J4-1
J4-2
J4-3

F110

F110

J5-1
J5-2
J5-3

BK
W

(115V only)

RECONDITIONING EXPOSURE
LAMPS & PRINT COUNTER PCB

LA1 LA2 LA3 LA4 LA5

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

J10-1 J215-1
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
J11-5 J214-5
J11-6 J214-6

FUSER

ASSEMBLY

FUSER ROLLER

HEATER H1

TP1

F187

THERMOPROTECTOR

J101-1 J101-2

J105-1
J105-2

J103-1
J103-2
J103-3

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

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)

RGSD
MPUSD

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

PSIZE2
PSIZE3

TH1

THERMISTOR

F187

AC CONTROLLER PCB

FUSER ROLLER HEATER

AC DRIVER PCB

TM1

TONER

CARTRIDGE

J2-4

J2-3

J2-1
J2-2

Q1

G

T2 T1

W

J105-7 J105-3

SQ1

SAFETY PCB

- + GND

J104-1

J104-2

J212-2

J212-1

FSRD

J104-3

J212-3

GND

+24V(R)

J212-4

FSRTH

J105-5

J212-5

GND

DC CONTROLLER PCB

TB6J7-1

F110

F187

F110

DRUM

TRANSFER
CORONA
ASSEMBLY

PRIMARY
CORONA

ASS'Y

DEVELOPING CYL

R

F110

TB8

J102-1
J102-2

OPTICAL FIBER

J203

TB7

TRANSFER
GUIDE

BK

J1-1

W

J1-2

BEAM

POSITION

SENSOR

J7-2

GN

I/O CONNECTOR UNIT

FG

4 3

NOISE

NF2

FILTER

2 1

PT2

J15-2

J15-1

FAN

FM1

J5

W

GN

J21-1

J21-2
J23-1

J23-2
J23-3

J23-4

J3
J4

W

J9

TRANSFORMER

GND

PDDP

+24V(R)

RDYL

PEMPL

JAML

+5V

+24V(UA)

LSRHD
LSRTH

GND

+5V

LD
PD

DSADJ

+24V(R)

GND

SCNRDY

SCNON

GND

HVTRNCDBDC

J601-1 J211-1

J601-2 J211-2

J601-3 J211-3

NC

GND

HVTR

PRIMARY

(–)

HIGH VOLTAGE

POWER SUPPLY

DEVELOPING BIAS
TRANSFER (+)

VZ1 R1 VR1
VARISTOR

R2

VARISTOR PCB

R

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

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

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

DBAC

+24V

J601-4 J211-4

J601-5 J211-6

J601-5 J211-5

+24V

DBAC

DBDC

GND

J22

-2

J22-1

R J610-3

PRINT DENSITY

DC POWER SUPPLY

(VIDEO CONTROLLER PCB)

PW1

BR

AC25V

GND
PDP
+24V

+5V
+5V

GND
GND

BR

BL
BL

DELIVERY

PS3

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

SENSOR

R

J17-1

R

J17-2

LASER UNIT

SCANNER

UNIT

BDBDPPRDY

VRST

J601-7 J211-7

VRST

+24V

PRINT DENSITY

ADJUSTMENT

Y J610-2

VRZ

HVPR

J601-8 J211-8

HVPR

GND

BL J610-1

PPRDY RET

J51-3 J202-3

J51-4 J202-4

J51-5 J202-5

J51-6 J202-6

I/O PCB
J14-4
J14-3

J14-2
J14-1

DISPLAY

UNIT

RDY

RDY RET

J51-7 J202-7

J51-8 J202-8

LASERWRITER I/O BOARD

ADJUSTMENT DIAL

J12-1

J12-23

J12-8

J12-20

J12-6

J12-5

J12-4

J12-3

J12-2

VSREQ

VSREQ RET

SBSY

SBSY RETSCSC RET

J51-9 J202-9

J51-10 J202-10

J51-11 J202-11

J51-12 J202-12

J51-13 J202-13

LED7

B2

B3

B4

TB25

J51-14 J202-14

B5

A2

A1

TB23

A3

A4

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

SCLK

SCLK RET

CBSY

CBSY RET

J51-15 J202-15

J51-16 J202-16

J51-17 J202-17

J51-18 J202-18

A5

LaserWriter

B1

SERIAL PORT CABLE

PRNT

J51-19 J202-19

J51-20 J202-20

I/O PCB

J16-25

J52-34

J16-24

J52-33

J16-23

J52-32

J16-22

J52-31

J16-21

J52-30

J16-20

J52-29

J16-19

J52-28

J16-18

J52-27

J16-17

J52-26

J16-16

J52-25

J16-15

J52-24

J16-14

J52-23

J16-13

J52-22

J16-12

J52-21

J16-11

J52-20

J16-10

J52-19

J16-9

J52-18

J16-8

J52-17

J16-7

J52-16

J16-6

J52-15

J16-5

J52-14

J16-4

J52-13

J16-3

J52-12

J16-2

J52-11

J16-1

J52-10

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

RS232/422

PRNT RET

VSYNC

VSYNC RET

CPRDY

CPRDY RET

J51-21 J202-21

J51-22 J202-22

J51-23 J202-23

J51-24 J202-24

J51-25 J202-25

VDO

VDOSGSG

J51-26 J202-26

J51-33 J202-33

J51-34 J202-34

Wiring Diagram 110V

K

Service Source

Exploded V ie w

LaserWriter Plus

Exploded View 1

LaserWriter & LaserWriter Plus Exploded View

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

970-1182
Top Shield Frame

970-1183
Bottom Shield Frame

661-0436 (LW)

661-0437 (LW+)
LaserWriter I/O Board

661-0273
DC Power Supply/

661-0278
Scanner Unit

970-1005
Paper
Separator

Motor Drive PCB

661-0267
DC Controller PCB

Front Panel
970-1113 (White)
970-1298
(Platinum)

Belt

970-1149
Transfer Guide Assy

970-1021
Transfer Corona Assy

I/O Board Power Supply
661-0323

970-1112
(White)
Right Panel

661-0277
Laser

Toner
Cartridge

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

970-1272
Manual Paper
Feed Plate

661-0266

High-Voltage

Power Supply

Varistor PCB

970-1111 (White)

970-1296 (Platinum)

Power Interlock Cover

Rear Panel

Upper MainBody

(not offered)
Fan Cove

(Not Offered)

Left-Side Frame

(Not Offered)

970-1110

(White)

970-1295

(Platinum)

Left Panel

AC Driver PCB

Wire Harness Cover

699-0324 (110 V)

Power Interlock Assy

Feeder Guide Assy

720-0502

971-1001

Ozone Filter

970-1143

661-0268

970-1069

970-1194

I/O Plate

971-0037

970-1035

Fan

970-1009

Main Motor

Assy

970-1020
Preconditioning
Exposure
Assy

Registration Shutte Assy

699-0323

970-1019

Separation/Feed

Roller Assy

970-1109
Display
Panel Assy

661-0450 (115 V)

Fuser Assy

970-1267 Front Latch