Service Manuals, User Guides, Schematic Diagrams or docs for : apple macintosh_portable
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K Service Source
Macintosh Portable
K Service Source
Basics
Macintosh Portable
Basics Overview - 1
Overview
This manual contains
complete repair procedures
for the Macintosh Portable
shown at left.
Figure: Macintosh Portable
K Service Source
Specifications
Macintosh Portable
Specifications Processor - 1
Processor
CPU Motorola 68HC000, 16-bit CMOS microprocessor
15.6672 MHz
Addressing 32-bit internal registers
24-bit address bus
16-bit data bus
Wait States 1 (static logic board)
10 (pseudostatic logic board)
Specifications Memory - 2
Memory
RAM 1 MB using thirty-two 32K by 8-bit static RAM chips; 100 ns
access time; addressing supports up to 9 MB
Expandable to 2 MB with optional 1 MB RAM expansion card
Expandable to 4 MB with optional 3 MB RAM expansion card
(backlit model)
ROM 256K using two 128K by 8-bit devices; 150 ns access time;
addressing supports up to 4 MB
PRAM 128 bytes of system parameter memory
VRAM 32K of static video display memory
Specifications Disk Storage - 3
Disk Storage
Floppy Drive Internal 1.4 MB floppy drive
Hard Drive Internal 40 MB hard drive (optional)
Specifications I/O Interfaces - 4
I/O Interfaces
Floppy Drive DB-19 connector
Supports Macintosh 800K Disk Drive, Apple 3.5 Drive, Apple
SuperDrive, and Apple Hard Disk 20
SCSI 1.5 MB/second transfer rate
Supports a maximum of eight devices
Apple Desktop Bus Low-speed serial interface
Supports optional low-power mouse
Serial Two RS-422 serial ports; mini DIN-8 connectors
Modem Phone jack for optional external modem
Specifications I/O Interfaces - 5
Power Adapter Power adapter port
Sound Stereo sound-in port
Video DA-15 connector
Supports the connection of external video devices
Specifications I/O Devices - 6
I/O Devices
Keyboard 63 keys
N-key rollover
Apple Desktop Bus (ADB) interface
US, British, French Canadian, Japanese, German, Spanish,
French, Swedish, and Italian versions available
Low-Power ADB Low-power version of the ADB mouse
Mouse Opto-mechanical type
ADB interface
Trackball ADB interface
Specifications I/O Devices - 7
Numeric Keypad 18 keys
(Optional) ADB interface
US, Pacific, and European versions available
Specifications Sound and Video - 8
Sound and Video
Sound Generator Apple Sound Chip
One-or four-voice mono (one or two voices in stereo) with 4-bit
digital-to-analog conversion using a 22-kHz sampling rate
Filtered by two Sony sound chips
Video Display 10-in. (diagonal) screen
Reflective, active-matrix, liquid crystal, flat-panel display
640 by 400 pixels, 75 dpi
.28 mm dot size; .33 mm dot pitch; 80% active area
Variable tilt
Contrast (nonbacklit display) and brightness (backlit display) is
software adjustable using the Control Panel.
Specifications Electrical - 9
Electrical
Main Battery Sealed lead-acid
6.5 V
Up to 10 hours (fully charged battery); time depends on system
configuration and power management settings
Backup Battery 9 V transistor
Power Adapter
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