Circuit Board Diagrams

On the following pages are diagrams of the circuit boards and high-voltage contacts listed below:

  • LaserWriter IISC I/O board
  • LaserWriter IINT I/O board
  • LaserWriter IINTX I/O board
  • LaserWriter IIf I/O board
  • LaserWriter IIg board
  • DC controller board
  • Distribution board
  • High-voltage contact
  • Fuser board

LaserWriter IISC I/O Board

SCSI

SCSI Switch

SCSI

SCSI

SCSI Switch

SCSI

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ADB DIP RS-232 LocalTalk

Switches RS-422

ADB DIP RS-232 LocalTalk

Switches RS-422

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ADB SCSI DIP RS-232 LocalTalk

Switches RS-422

ADB SCSI DIP RS-232 LocalTalk

Switches RS-422

LaserWriter Ilf I/O Board

ROMs

SIMMs

Pushbutton Switch

ROMs

SIMMs

Pushbutton Switch

LocalTalk

RS-232 RS-422

SCSI

LocalTalk

RS-232 RS-422

SCSI

LaserWriter I Ig I/O Board

ROMs

SIMMs

Pushbutton Switch

ROMs

SIMMs

Pushbutton Switch

LocalTalk

RS-232 RS-422

Ethernet

SCSI

LocalTalk

RS-232 RS-422

Ethernet

SCSI

DC Controller Board

J201

J203 J202

Service Test Page Button

(see "Service Test Page" in Basics)

Service Test Page Button

(see "Service Test Page" in Basics)

J201

J203 J202

J208 J207 J206

Cover Interlock Switch

C211 (see "Capacitor Discharge" in Troubleshooting.)

J208 J207 J206

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