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Created page with "{{Infobox computer | name = Macintosh Classic II | image = 250px | caption = Macintosh Classic II | manufacturer = Apple Computer, Inc. | type = Personal Computer | release date = October 21, 1991 | discontinued = September 13, 1993 | price = US$1,900 | cpu = Motorola 68030 @ 16 MHz | memory = 2 MB RAM (expandable to 10 MB) | storage = 1.44 MB 3.5" floppy drive, optional 40–80 MB SCS..."
 
Rebuilt against Apple Classic/Classic II/Performa 200 Service Source: DELETED fabricated memory map, V8 Lite/MEMCjr chipset claims, 53C96 and Egret attributions, ROM module table, MacBench comparison table, Paris codename/Eiffel silkscreen, JP3 debug jumper and the cold-start easter egg; SIMM speed 80ns -> 120ns or faster, single SIMM claim corrected to a pair, dimensions/weight/model number corrected; region-specific analogue board warning added; release_date parameter fixed; refs and reflist
 
(19 intermediate revisions by the same user not shown)
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| caption      = Macintosh Classic II
| caption      = Macintosh Classic II
| manufacturer = Apple Computer, Inc.
| manufacturer = Apple Computer, Inc.
| type        = Personal Computer
| type        = Personal computer
| release date = October 21, 1991
| release_date = 21 October 1991
| discontinued = September 13, 1993
| discontinued = 13 September 1993
| price        = US$1,900
| price        = US$1,899
| cpu          = Motorola 68030 @ 16 MHz
| cpu          = Motorola 68030 @ 16 MHz, 16-bit external data bus
| memory      = 2 MB RAM (expandable to 10 MB)
| memory      = 2 MB soldered, expandable to 10 MB (two 30-pin SIMMs, 120 ns or faster)
| storage      = 1.44 MB 3.5" floppy drive, optional 40–80 MB SCSI hard drive
| rom          = 512 KB
| display      = 9" monochrome CRT (512×342 pixels)
| storage      = Internal 1.4 MB floppy drive; internal 40 or 80 MB SCSI hard disk
| sound        = Monaural 8-bit, 22 kHz
| display      = 9-inch monochrome CRT, 512 × 342 pixels
| dimensions  = 13.2" H × 9.6" W × 10.9" D
| sound        = Monophonic, 8-bit D/A conversion, 22 kHz sampling; built-in microphone
| weight      = 16.5 lbs (7.5 kg)
| ports        = 1 × ADB; DB-19 external floppy; DB-25 SCSI; 2 × RS-422 serial; sound in and out
| expansion    = None
| power        = 100–120 V AC, 47–63 Hz, 100 W maximum
| dimensions  = 13.2 in H × 9.7 in W × 11.2 in D (33.6 × 24.6 × 28.5 cm)
| weight      = 16–17.1 lb (7.3–7.8 kg) without a hard disk
| os          = System 6.0.8L – System 7.6.1
| os          = System 6.0.8L – System 7.6.1
| predecessor  = [[Macintosh Classic]]
| predecessor  = [[Macintosh Classic]]
| successor    = [[Macintosh Color Classic]]
| successor    = [[Macintosh Color Classic]]
| codename    = Performa, Stardust, Apollo
| codename    = Apollo, Montana
| model        = M0420, M4150
| model        = M4150
}}
}}
The '''Macintosh Classic II''' was introduced on 21 October 1991 and is the last 9-inch monochrome compact Macintosh. Apple also sold it as the '''Performa 200''' from September 1992, and services all three names from one manual.<ref name="sscl">Apple Computer, ''Macintosh Classic/Classic II/Performa 200 Service Source'' — Specifications, Troubleshooting, Upgrades, Adjustments and Additional Procedures chapters. Hosted on this wiki: [[:File:Classic ii.performa 200.pdf]].</ref><ref name="lem">Low End Mac, ''Mac Classic II'' tech specs (secondary source, used for dates, prices, codenames and the motherboard lineage).</ref>


The '''Macintosh Classic II''', released in 1991, was the final compact black-and-white Macintosh to use the classic all-in-one design. Unlike its predecessor, it utilized the more advanced Motorola 68030 processor—similar to the SE/30—but without the PDS expansion slot or 32-bit clean ROM. It came with 2 MB of RAM standard and supported up to 10 MB via a single 100 ns 30-pin SIMM. The Classic II retained the 9-inch monochrome display, making it ideal for schools and business use, but with improved performance and more modern architecture.
It replaced the [[Macintosh SE/30]] and is slower than it, despite using the same 68030 at the same clock: the Classic II's logic board is derived from the LC and carries a '''16-bit external data bus''', and it has no expansion slot.<ref name="sscl" /><ref name="lem" />


== General Maintenance ==
== Specifications ==
For details on disassembly, cleaning, voltage regulation, PRAM battery handling, and corrosion prevention, refer to the [[Macintosh Classic II General Maintenance]] page.


== PCB Schematics & Service Manual ==
Apple's own specification pages.<ref name="sscl" />


The Classic II consists of a logic board and analog board, similar in layout to the Macintosh SE/30 but with different ICs and no expansion slot.
<templatestyles src="Template:StyledTable/styles.css" />
{| class="wikitable styled-table" style="width:85%;"
! Item !! Specification
|-
| CPU || Motorola 68030, 16 MHz, 32-bit internal data bus, 256-byte instruction and data caches
|-
| RAM || 2 MB, expandable to 10 MB (120 ns or faster SIMMs)
|-
| ROM || 512 KB
|-
| PRAM || 256 bytes
|-
| SIMM sockets || Two, 30-pin, on the logic board
|-
| Floppy || Internal 1.4 MB; optional external 800 KB or 1.4 MB
|-
| Hard disk || Internal 40 MB or 80 MB; external SCSI supported
|-
| Microphone || Electret, omnidirectional; output 4 mV peak to peak at normal volume
|-
| ADB || One port, mini-DIN-4
|-
| Serial || Two RS-422 ports, mini-DIN-8
|-
| Sound || Monophonic, 8-bit D/A conversion, 22 kHz sampling; can drive stereo headphones through the sound jack
|-
| Video || 9-inch diagonal, 512 × 342 bit-mapped monochrome
|-
| Line voltage || 100–120 V AC
|-
| Frequency || 47–63 Hz, single phase
|-
| Maximum power || 100 W
|-
| Dimensions || 13.2 × 9.7 × 11.2 in (33.6 × 24.6 × 28.5 cm)
|-
| Weight || 16–17.1 lb (7.3–7.8 kg), excluding an internal hard disk
|}
 
== Memory ==
 
2 MB soldered plus two 30-pin SIMM sockets on the logic board, filled as an identical pair: 4 MB with a pair of 1 MB modules, 10 MB with a pair of 4 MB modules. '''120 ns or faster''', eight-chip, non-parity.<ref name="sscl" /> Full procedure: [[Macintosh Classic II Memory Upgrade Guide]].
 
Apple's Sad Mac chart for this machine says to replace the pair of SIMMs before replacing the logic board.<ref name="sscl" />
 
== Upgrade from a Classic ==
 
Apple sold a Classic II upgrade kit for the [[Macintosh Classic]]: a Classic II logic board, a Classic II rear cover, a microphone and an accessory kit. The instruction that went with it was to record the original serial number onto the new rear housing.<ref name="sscl" />


=== Apple Service Manual ===
== Service manual and schematics ==
The complete Apple Service Manual archive is available at the [[Apple Service Manuals]] page. For the Classic II, you can download the service guide here: [[File:Macintosh Classic II.pdf|center|thumb|Apple Service Guide - Macintosh Classic II]]


=== Logic Board & Analog Board Schematics ===
=== Apple service manual ===
<pdf width="800" height="500">File:Macintosh_Classic_-_Classic_II.pdf</pdf>
 
All the Apple service manuals are on the [[:Category:Apple Service Source|Apple Service Source]] page.
 
=== Logic board and analogue board ===


{| class="wikitable" style="width:50%; text-align:center;"
{| class="wikitable" style="width:50%; text-align:center;"
|+'''Macintosh Classic II PCB Schematics'''
|+'''Macintosh Classic II PCB images'''
|-
|-
! style="background-color:#f2f2f2; width:30%;"| Logic Board
! style="background-color:#f2f2f2; width:30%;"| Logic board
! style="background-color:#f2f2f2; width:30%;"| Analog Board
! style="background-color:#f2f2f2; width:30%;"| Analogue board
|-
|-
| [[File:MacintoshClassicII LogicBoard.jpg|thumb|center|250px|Macintosh Classic II Logic Board]][[File:ClassicII LogicBoard Schematic.pdf|center|thumb|Macintosh Classic II Logic Board Schematic]]
| [[File:MacintoshClassicII LogicBoard.jpg|thumb|center|250px|Macintosh Classic II logic board]][[File:Macintosh Classic II Schematic.pdf|center|thumb|Macintosh Classic II logic board schematic]]
| [[File:MacintoshClassicII AnalogBoard.png|center|thumb|250x250px|Macintosh Classic II Analog Board]][[File:ClassicII Analog Schematic.pdf|center|thumb|Macintosh Classic II Analog Board Schematic]]
| [[File:MacintoshClassic AnalogBoard.jpg|center|thumb|250x250px|Classic-family analogue board]][[File:Classic Analog Board Schematic.pdf|center|thumb|Classic analogue board schematic]]
|}
|}


== Capacitor Replacement Guide ==
== Maintenance, capacitors and troubleshooting ==
The Classic II is prone to logic board failure due to surface-mount capacitor leakage. For safe replacement procedures, refer to the [[Macintosh Classic II Capacitor Replacement Guide]].
 
The Classic II logic board carries surface-mount electrolytic capacitors and suffers the usual leakage and trace corrosion; recapping is the first job on any machine that has sat unused. Values and positions are on the [[Macintosh Classic II Capacitor Replacement Guide]].
 
'''The Classic II analogue board exists in 110 V and 220–240 V versions, and their reservoir capacitors are not the same part.''' Work from the table for the board in front of you — a capacitor rated for the 110 V board on a 240 V board sits on a bus that rectifies to roughly 340 V.


== Retrobrite ==
* '''[[Macintosh Classic / Classic II General Maintenance]]''' — cleaning, the 3.6 V lithium cell and its 3.0 V replacement threshold.
For plastic restoration and case whitening instructions, visit the [[Retrobrite]] page.
* '''[[Macintosh Classic / Classic II Troubleshooting]]''' — symptom-led diagnosis.
* '''[[CRT Discharge Procedure]]''' — read before opening the case.
* '''[[Retrobrite]]''' — for the yellowed case.


== Troubleshooting ==
'''Apple publishes no rail tolerance and no power-supply adjustment for this machine'''; its Adjustments chapter is video and yoke work only.<ref name="sscl" /> ''The Dead Mac Scrolls'' does not cover the Classic II either, so board references quoted for it from that book have been transplanted from another model.<ref name="dms">Larry Pina, ''The Dead Mac Scrolls'', Peachpit Press, 1992, introduction: the Classic and Classic II "aren't covered at all in this edition". Hosted on this wiki: [[:File:The Dead Mac Scrolls 1992.pdf]].</ref>
A complete guide to common issues including no chime, no video, checkerboard pattern, logic board failure, and hard drive detection issues is available at the [[Macintosh Classic II Troubleshooting]] page.
 
Sad Mac codes are decoded on [[Sad Mac Error Codes]] and with the [[Sad Mac Decoder]].
 
== Related pages ==
* [[Macintosh Classic]]
* [[Macintosh SE/30]] — the machine it replaced
* [[Macintosh Color Classic]]
 
== References ==
<references />


[[Category:Apple Vintage Computers]]
[[Category:Apple Vintage Computers]]
{{Navbox-AppleVintage|state=collapsed}}

Latest revision as of 18:18, 23 September 2026

Macintosh Classic II
Macintosh Classic II
Specifications
ManufacturerApple Computer, Inc.
TypePersonal computer
Released21 October 1991
Discontinued13 September 1993
Intro priceUS$1,899
CPUMotorola 68030 @ 16 MHz, 16-bit external data bus
Memory2 MB soldered, expandable to 10 MB (two 30-pin SIMMs, 120 ns or faster)
StorageInternal 1.4 MB floppy drive; internal 40 or 80 MB SCSI hard disk
Display9-inch monochrome CRT, 512 × 342 pixels
SoundMonophonic, 8-bit D/A conversion, 22 kHz sampling; built-in microphone
ROM512 KB
Ports / interface1 × ADB; DB-19 external floppy; DB-25 SCSI; 2 × RS-422 serial; sound in and out
ExpansionNone
Power100–120 V AC, 47–63 Hz, 100 W maximum
Dimensions13.2 in H × 9.7 in W × 11.2 in D (33.6 × 24.6 × 28.5 cm)
Weight16–17.1 lb (7.3–7.8 kg) without a hard disk
OS / FirmwareSystem 6.0.8L – System 7.6.1
PredecessorMacintosh Classic
SuccessorMacintosh Color Classic
CodenameApollo, Montana
Model no.M4150

The Macintosh Classic II was introduced on 21 October 1991 and is the last 9-inch monochrome compact Macintosh. Apple also sold it as the Performa 200 from September 1992, and services all three names from one manual.[1][2]

It replaced the Macintosh SE/30 and is slower than it, despite using the same 68030 at the same clock: the Classic II's logic board is derived from the LC and carries a 16-bit external data bus, and it has no expansion slot.[1][2]

Specifications

[edit | edit source]

Apple's own specification pages.[1]

Item Specification
CPU Motorola 68030, 16 MHz, 32-bit internal data bus, 256-byte instruction and data caches
RAM 2 MB, expandable to 10 MB (120 ns or faster SIMMs)
ROM 512 KB
PRAM 256 bytes
SIMM sockets Two, 30-pin, on the logic board
Floppy Internal 1.4 MB; optional external 800 KB or 1.4 MB
Hard disk Internal 40 MB or 80 MB; external SCSI supported
Microphone Electret, omnidirectional; output 4 mV peak to peak at normal volume
ADB One port, mini-DIN-4
Serial Two RS-422 ports, mini-DIN-8
Sound Monophonic, 8-bit D/A conversion, 22 kHz sampling; can drive stereo headphones through the sound jack
Video 9-inch diagonal, 512 × 342 bit-mapped monochrome
Line voltage 100–120 V AC
Frequency 47–63 Hz, single phase
Maximum power 100 W
Dimensions 13.2 × 9.7 × 11.2 in (33.6 × 24.6 × 28.5 cm)
Weight 16–17.1 lb (7.3–7.8 kg), excluding an internal hard disk

Memory

[edit | edit source]

2 MB soldered plus two 30-pin SIMM sockets on the logic board, filled as an identical pair: 4 MB with a pair of 1 MB modules, 10 MB with a pair of 4 MB modules. 120 ns or faster, eight-chip, non-parity.[1] Full procedure: Macintosh Classic II Memory Upgrade Guide.

Apple's Sad Mac chart for this machine says to replace the pair of SIMMs before replacing the logic board.[1]

Upgrade from a Classic

[edit | edit source]

Apple sold a Classic II upgrade kit for the Macintosh Classic: a Classic II logic board, a Classic II rear cover, a microphone and an accessory kit. The instruction that went with it was to record the original serial number onto the new rear housing.[1]

Service manual and schematics

[edit | edit source]

Apple service manual

[edit | edit source]

All the Apple service manuals are on the Apple Service Source page.

Logic board and analogue board

[edit | edit source]
Macintosh Classic II PCB images
Logic board Analogue board
Macintosh Classic II logic board
File:Macintosh Classic II Schematic.pdf
Classic-family analogue board
File:Classic Analog Board Schematic.pdf

Maintenance, capacitors and troubleshooting

[edit | edit source]

The Classic II logic board carries surface-mount electrolytic capacitors and suffers the usual leakage and trace corrosion; recapping is the first job on any machine that has sat unused. Values and positions are on the Macintosh Classic II Capacitor Replacement Guide.

The Classic II analogue board exists in 110 V and 220–240 V versions, and their reservoir capacitors are not the same part. Work from the table for the board in front of you — a capacitor rated for the 110 V board on a 240 V board sits on a bus that rectifies to roughly 340 V.

Apple publishes no rail tolerance and no power-supply adjustment for this machine; its Adjustments chapter is video and yoke work only.[1] The Dead Mac Scrolls does not cover the Classic II either, so board references quoted for it from that book have been transplanted from another model.[3]

Sad Mac codes are decoded on Sad Mac Error Codes and with the Sad Mac Decoder.

[edit | edit source]

References

[edit | edit source]
  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Apple Computer, Macintosh Classic/Classic II/Performa 200 Service Source — Specifications, Troubleshooting, Upgrades, Adjustments and Additional Procedures chapters. Hosted on this wiki: File:Classic ii.performa 200.pdf.
  2. ↑ 2.0 2.1 Low End Mac, Mac Classic II tech specs (secondary source, used for dates, prices, codenames and the motherboard lineage).
  3. ↑ Larry Pina, The Dead Mac Scrolls, Peachpit Press, 1992, introduction: the Classic and Classic II "aren't covered at all in this edition". Hosted on this wiki: File:The Dead Mac Scrolls 1992.pdf.


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