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K Service Source




Macintosh TV
K Service Source




Basics
Macintosh TV
Basics Overview - 1


Overview
This manual contains
complete repair procedures
for the Macintosh TV shown
at left.




Figure: Macintosh TV
K Service Source




Specifications
Macintosh TV
Specifications Processor - 1

Processor

CPU Motorola 68030 microprocessor
32 MHz
Built-in memory management unit (MMU)
Coprocessor
Socket for optional math coprocessor
Specifications Memory - 2

Memory

RAM 4 MB of dynamic RAM on board
Expandable to 8 MB (100 ns or faster SIMMs)
72-pin DRAM SIMM connector


ROM 1 MB of ROM, expandable to 2 MB


PRAM 256 bytes of clock/calendar/parameter memory
Long-life lithium battery


VRAM 512K of VRAM on board (displays up to 256 colors or 8-bit
color)
Specifications Disk Storage - 3

Disk Storage

Floppy Drive Internal 1.4 MB Apple SuperDrive


Hard Drive 3.5-inch, internal 160 MB SCSI hard drive


CD-ROM Drive Internal AppleCD 300i, double-speed CD-ROM drive
Specifications I/O Interfaces - 4


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 Apple Desktop Bus (ADB) ports; mini DIN-4 connectors
Maximum of three ADB devices recommended
Maximum current draw: 500 mA
(Mouse draws 10 mA, keyboard draws 25 mA)
Specifications I/O Interfaces - 5

Infrared Receiver For remote control


Sound Sound-output port capable of delivering stereo sound
Sound-input port for monaural sound input
Front headphone jack capable of delivering stereo sound
Specifications I/O Devices - 6

I/O Devices

Keyboard Supports all Apple Desktop Bus keyboards


Mouse Apple Desktop Bus Mouse II
New, ergonomic design


Speaker Adjustable sound control on front of bezel
Specifications Sound and Video - 7

Sound and Video

Sound Generator Records at 11 kHz or 22 kHz sample rate
Plays back at 11 kHz or 22 kHz sample rate
Two speakers with enhanced stereo sound
Allows playback and recording of ordinary audio compact discs


Video Display 14-in. diagonal, 13-in. viewable screen
Trinitron CRT with high-contrast glass
.26-mm aperture grille pitch
640 pixels by 480 lines; 70 dpi
Specifications Electrical - 8

Electrical

Line Voltage 100