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K Service Source
Macintosh SE
K Service Source
Basics
Macintosh SE
Basics Overview - 1
Overview
This manual contains
complete repair procedures
for the Macintosh SE, shown
at left.
Figure: Macintosh SE
K Service Source
Specifications
Macintosh SE
Specifications Processor - 1
Processor
CPU Motorola 68000 microprocessor
7.83 MHz
32-bit architecture
Specifications Memory - 2
Memory
RAM 1 or 2 MB, expandable to 4 MB
ROM 256K
PRAM 256 bytes of memory
CMOS custom chip with seven-year lithium battery
Specifications Disk Storage - 3
Disk Storage
Floppy Drive 1.4 MB floppy drive
Optional second internal and external floppy drive
Hard Drive Optional 20 or 40 MB hard drive
Optional external hard drive
Specifications I/O Interfaces - 4
I/O Interfaces
Expansion Macintosh SE expansion slot; uses a 96-pin Euro-DIN connector
SCSI Uses a 50-pin connector (internal) and a DB-25 connector
(external)
Apple Desktop Bus Two Apple Desktop Bus (ADB) connectors for communication with
keyboard, mouse, and other input devices
Serial Two RS-232/RS-422 serial ports; 230.4 Kbaud maximum; mini
DIN-8 connectors
Sound For external audio amplifier (standard miniature)
Specifications I/O Devices - 5
I/O Devices
Keyboards Apple Keyboard: 81 keys, including numeric keypad and cursor
keys
Apple Extended Keyboard: 105 keys, including 15 function keys,
separate cursor pad, and 10-key numeric keypad
Mouse Mechanical tracking; optical shaft at 3.94 pulses per mm (100
pulses per in.) of travel; ADB connector
Specifications Sound and Video - 6
Sound and Video
Sound Generator Four-voice sound with 8-bit digital/analog conversion using 22-
kHz sampling rate
Video Display 9-in. (diagonal) screen; high-resolution, 512 by 342 pixel,
bit-mapped display
Specifications Electrical - 7
Electrical
Line Voltage 90