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K Service Source
Macintosh Color Classic
K Service Source
Basics
Macintosh Color Classic
Basics Overview - 1
Overview
This manual contains
complete repair procedures
for the Macintosh Color
Classic shown at left.
Figure: Macintosh Color Classic
K Service Source
Specifications
Color Classic
Specifications Configurations - 1
Configurations
Standard 4 MB RAM, 256K VRAM, 3.5-in. hard drive (many sizes),
internal 1.4 MB floppy drive, user-removable logic board, 9-
in. color display, built-in speaker and microphone, keyboard,
mouse, ADB and power cables, system software installed on
hard drive (requires System 7.1)
Options Memory expansion kit
256K VRAM SIMM upgrade
Apple IIe emulation card
LC ethernet card
Math coprocessor
Anti-glare, anti-static CRT
Specifications Processor - 2
Processor
CPU Motorola 68030 microprocessor
16 MHz
Built-in Paged Memory Management Unit (PMMU)
256-byte instruction and data caches
Coprocessor Socket for optional Motorola 68882 floating-point coprocessor
16 MHz
Addressing 16-bit data bus
32-bit address bus
16-bit internal registers
Specifications Memory - 3
Memory
RAM 4 MB of dynamic RAM on board
Expandable to 10 MB (100 ns or faster SIMMs)
Dual SIMM expansion slot (two 30-pin connectors)
Includes RAM disk software
ROM 1 MB of main ROM on board; 2 MB maximum of main ROM
PRAM 256 bytes of clock/calendar/parameter memory
Long-life lithium battery
Specifications Memory - 4
VRAM 256K of VRAM on board
Expandable to 512K of VRAM with 256K VRAM SIMM (100 ns or
faster VRAM SIMM)
68-pin VRAM SIMM connector
Specifications Disk Storage - 5
Disk Storage
Floppy Drive Internal 1.4 MB Apple SuperDrive
Hard Drive 3.5-inch, internal 40, 80, or 160 MB SCSI hard drive
Specifications I/O Interfaces - 6
I/O Interfaces
Serial Two RS-232/RS-422 serial ports; mini DIN-8 connectors
SCSI One SCSI parallel port; DB-25 connector
Connects up to six external SCSI devices
Apple Desktop Bus Two ADB ports; mini DIN-4 connector
Maximum of three ADB devices recommended
Maximum current draw: 500 mA (Mouse draws 10 mA, keyboard
draws 25 mA)
Specifications I/O Interfaces - 7
Sound Sound-input, external microphone port, 8-bit monaural sound,
sampled at 22 or 11 KHz
Monophonic sound-output jack for external audio amplifier or
headphones
Processor Direct Slot Macintosh LC-compatible, 96-pin PDS expansion connector
Specifications I/O Devices - 8
I/O Devices
Keyboard Standard 80-key Apple keyboard with numeric keypad; ADB
connector
Soft power-on switch
2.5 mm travel, 18 mm vertical and horizontal pitch
Two-level tilt adjustment
Mouse Apple Desktop Bus Mouse II
Microphone Built-in electret, omnidirectional microphone
Speaker Adjustable sound control on front of bezel
Specifications Sound and Video - 9
Sound and Video
Sound Generator Monophonic 8-bit digital