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Rewrite from IIvx developer note, Service Source, Macworld Dec 1992 and EveryMac; infobox photo of an actual IIvi (was the IIvx photo); FPU socket, no cache, 16 MHz timings, SCSI termination, PSU part; remove uncited 100-120 V supply claim
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{{Infobox computer
{{Infobox computer
| name        = Macintosh IIvi
| name        = Macintosh IIvi
| image        = [[File:Macintosh_IIvx.jpg|250px]]
| image        = [[File:Macintosh IIvi.jpg|250px|frameless]]
| caption      = Macintosh IIvi (same case as IIvx)
| caption      = Macintosh IIvi (All About Apple museum)
| manufacturer = Apple Computer, Inc.
| manufacturer = Apple Computer, Inc.
| type        = Desktop Personal Computer
| type        = Desktop personal computer
| release date = October 19, 1992
| released    = 19 October 1992
| discontinued = February 10, 1993
| discontinued = 10 February 1993
| price        = Not sold in United States
| price        = US$2,900 (4 MB, 80 MB) at introduction; not sold in the United States
| cpu          = Motorola 68030 @ 16 MHz
| cpu          = Motorola 68030 at 16 MHz (15.6672 MHz)
| memory      = 4 MB RAM onboard (expandable to 68 MB)
| fpu          = Optional 68882 (socket on the logic board)
| storage      = 40 MB, 80 MB, 160 MB, or 400 MB SCSI hard drive
| memory      = 4 MB soldered plus four 30-pin SIMM sockets, 68 MB maximum (80 ns)
| display      = DB-15 video, 640×480 @ 8-bit (512K VRAM)
| rom          = 1 MB
| sound        = 8-bit stereo output, mono input
| storage      = Internal SCSI hard drive, 40-400 MB; optional internal CD-ROM
| dimensions  = 6.0" H × 13.0" W × 16.5" D (15.2 × 33 × 41.9 cm)
| media        = Internal 1.4 MB floppy drive
| weight      = 25 lbs (11.3 kg)
| graphics    = Built in (DB-15), 512 KB or 1 MB VRAM on two VRAM SIMMs
| os          = System 7.1 – Mac OS 7.6.1
| sound        = Mono output through the speaker, stereo CD audio at the headphone jack; mono sound input
| predecessor  = [[Macintosh IIci]]
| expansion    = Three NuBus slots, one 120-pin accelerator slot, one 5.25-inch bay
| ports        = Two ADB, two RS-232/RS-422 serial (mini DIN-8), SCSI (DB-25), video (DB-15), headphone and microphone jacks
| power        = 85-270 V AC auto-ranging; 112 W DC maximum
| dimensions  = 6 × 13 × 16.5 in (150 × 325 × 412 mm)
| weight      = 25 lb (11.3 kg)
| os          = System 7.1 to Mac OS 7.6.1
| successor    = [[Macintosh Centris 650]]
| successor    = [[Macintosh Centris 650]]
| codename    =  
| codename    = Brazil, Lego
| model        = M1350
| model        = M1350 (Gestalt ID 44)
}}
}}
The '''Macintosh IIvi''' is a desktop personal computer manufactured by Apple Computer, Inc. from October 1992 to February 1993.<ref>{{cite web |url=https://everymac.com/systems/apple/mac_ii/specs/mac_iivi.html |title=Macintosh IIvi Specs |publisher=EveryMac.com |access-date=2026-02-09}}</ref> The IIvi was a cost-reduced version of the [[Macintosh IIvx]], featuring the same 68030 processor but running at 16 MHz instead of 32 MHz, and lacking the L2 cache and FPU of its faster sibling.
The '''Macintosh IIvi''' is a desktop Macintosh introduced by Apple on 19 October 1992 and discontinued on 10 February 1993.<ref name="everymac">{{cite web |url=https://everymac.com/systems/apple/mac_ii/specs/mac_iivi.html |title=Apple Macintosh IIvi Specs |publisher=EveryMac |access-date=2026-09-30}} Introduced 19 October 1992, discontinued 10 February 1993; sold in South America, Europe and Japan, not in the United States; 40, 80, 160 or 400 MB hard drive; Japanese order numbers M1378J/A (4 MB, floppy only) and M1354J/A (4 MB, 160 MB).</ref> It is the low-cost version of the [[Macintosh IIvx]]: the same case and logic board design, with the 68030 at 16 MHz instead of 32 MHz, no cache and no FPU, though the board has a socket for one.<ref name="dn">Apple Computer, ''Macintosh IIvx Developer Note'' (1992), also covering the Macintosh IIvi and Performa 600, [[:File:Macintosh IIvx IIvi and Performa 600 Developer Note.pdf]]; see [[Macintosh IIvx IIvi and Performa 600 Developer Note]]. Printed page numbers: features and Table 1-1 comparison pp. 2-3; compatibility pp. 4-5; ROM, RAM, VRAM pp. 9-10; ADB, clock, soft power pp. 19-20; accelerator slot power p. 25; enclosure and power supply pp. 27-28; internal drives pp. 29-32; software p. 35.</ref> Apple offered it in Europe and the Pacific rather than the United States, where the [[Macintosh Performa 600|Performa 600]] took its place.<ref name="mw9212">Charles Seiter, "Macintosh IIvx: The latest desktop Mac is a faster version of the Performa 600", ''Macworld'', December 1992, pp. 206-207, [https://archive.org/details/MacWorld_9212_December_1992 archive.org]. The IIvi: offered to users in Europe and the Pacific; 68030 at 16 MHz; no 68882 but a slot to add one; no cache; base IIvi with 4 MB and an 80 MB hard drive US$2,900.</ref><ref name="everymac" /> Apple's service manual covers it with the IIvx and Performa 600.<ref name="ss">Apple Computer, ''Macintosh IIvx, Macintosh IIvi, Performa 600'' Service Source, [[:File:Macintosh iivx.vi.perf 600.pdf]]; see [[Macintosh IIvx/IIvi/Performa 600 Service Source]]. Page numbers are the PDF's: Specifications pp. 5-13; Symptom Charts pp. 16-24; Take Apart pp. 26-51; Battery Verification pp. 68-69; Exploded View p. 76.</ref>
 
The IIvi was sold in South America, Europe, and Japan, but not in the United States. The consumer version sold in the US was the Performa 600.<ref>{{cite web |url=https://everymac.com/systems/apple/mac_ii/specs/mac_iivi.html |title=Macintosh IIvi Specs |publisher=EveryMac.com |access-date=2026-02-09}}</ref>
 
== Architecture and Processor ==
 
The Macintosh IIvi uses a '''Motorola MC68030''' microprocessor running at 16 MHz.<ref>{{cite web |url=https://everymac.com/systems/apple/mac_ii/specs/mac_iivi.html |title=Macintosh IIvi Specs |publisher=EveryMac.com |access-date=2026-02-09}}</ref>
 
* '''Clock Speed''': 16 MHz
* '''Bus Speed''': 16 MHz
* '''Data Path''': 32-bit
* '''L1 Cache''': 0.5 KB (on-chip)
* '''L2 Cache''': None
* '''FPU''': Optional Motorola 68882
 
The IIvi lacks the 32K L2 cache found in the IIvx, making it slower in cache-dependent operations.
 
== Memory ==
 
=== RAM Configuration ===
 
* '''Onboard RAM''': 4 MB soldered
* '''SIMM Slots''': 4 × 30-pin
* '''SIMM Speed''': 80 ns minimum
* '''Maximum RAM''': 68 MB (4 MB onboard + 64 MB in SIMMs)
* '''SIMM Installation''': Four identical SIMMs must be installed as a group
 
=== ROM ===
 
* '''ROM Size''': 1 MB
* '''ROM Type''': Macintosh ROM
 
=== VRAM ===
 
* '''Standard VRAM''': 512 KB (two 256 KB VRAMs)
* '''Maximum VRAM''': 1 MB (two 512 KB VRAMs)
* '''VRAM Slots''': 2 × VRAM SIMM slots
* '''VRAM Speed''': 100 ns
 
== Video ==
 
* '''Video Output''': DB-15 connector
* '''Maximum Resolution''': 640 × 480 pixels
* '''Color Depth (512K VRAM)''': 8-bit (256 colors) at 640×480, 16-bit at 512×384
* '''Color Depth (1 MB VRAM)''': 16-bit (thousands) at 640×480
 
Additional displays can be connected via NuBus video cards.
 
== Storage ==
 
=== Hard Drive ===
 
* '''Interface''': SCSI (DB-25 external connector)
* '''Standard Capacities''': 40 MB, 80 MB, 160 MB, or 400 MB
 
=== Floppy Drive ===
 
* '''Drive Type''': Apple SuperDrive (1.44 MB)
* '''Auto-inject''': Yes
 
=== Optical Drive ===
 
* '''CD-ROM''': Optional 2X internal
 
== Input/Output and Expansion ==
 
=== Ports ===
 
* '''ADB Ports''': 2 (Apple Desktop Bus)
* '''Serial Ports''': 2 × Mini DIN-8 RS-422 (Printer and Modem)
* '''SCSI Port''': DB-25 connector
* '''Video Port''': DB-15 connector
* '''Audio Output''': 3.5 mm stereo jack
* '''Audio Input''': 3.5 mm mono jack
 
=== Expansion Slots ===
 
* '''NuBus slots''': 3, plus what Apple calls an '''accelerator slot''' (not a general-purpose PDS)<ref name="ssiivx" />
* '''Processor Direct Slot (PDS)''': 1
* '''Expansion Bay''': 1 × 5.25" (for CD-ROM)
 
== Power ==
 
 
=== Power — Apple's figures, and the trap in them ===
 
Apple's Electrical specification for the IIvi, IIvx and Performa 600 is in '''three''' parts, and
they are easy to conflate:<ref name="ssiivx">Apple Computer, ''Macintosh IIvx, Macintosh IIvi, Performa 600 Service Source'' ([[Macintosh IIvx/IIvi/Performa 600 Service Source]], [[:File:Macintosh_iivx.vi.perf_600.pdf]]), Specifications chapter and Additional Procedures → Battery Verification ("if the battery voltage is below 2.8 volts, replace the battery").</ref>
 
* '''A/C line input: 100–120 VAC, 200 W'''
* '''A/C line output receptacle: 100–240 VAC, 3 A maximum''' — this is the '''switched monitor
  outlet''' on the back, not the machine's own input
* '''DC power: 112 W maximum'''
 
'''"Input voltage 100–240 V AC" circulates for this machine. That is the output receptacle's
rating.''' Apple prints the machine's own line input as '''100–120 VAC''' — a domestic figure — so
a 220–240 V IIvx is a different supply, and its primary-side parts are not interchangeable with a
110 V one. Check which board is in front of you before ordering primary-side capacitors.
 
'''"230 W maximum" also circulates for this machine and is not Apple's figure''' for any part of this
machine: 200 W is the AC input rating and 112 W the DC output. 230 W is the '''Macintosh IIfx'''
figure.
 
'''Apple publishes no rail tolerance and no power-supply adjustment for this machine.'''
 
=== Battery ===
 
'''3.6 V ½AA lithium; Apple's instruction is to replace it below 2.8 V'''<ref name="ssiivx" /> — measured
on the 10 V DC range. 2.8 V is the IIcx / IIci / IIvi / IIvx / Quadra 700 / SE / SE-30 figure;
3.0 V and 3.2 V belong to other machines and get transplanted between them. Lithium leakage is
neutralised with '''bicarbonate of soda''', not vinegar.
 
 
== Case Design ==
 
The IIvi uses the same high-profile desktop case as the [[Macintosh IIvx]], Performa 600, [[Macintosh Centris 650]], [[Macintosh Quadra 650]], and Power Macintosh 7100. The case includes a front-accessible 5.25" bay for an optional CD-ROM drive.
 
* '''Dimensions''': 6.0" H × 13.0" W × 16.5" D (15.2 × 33 × 41.9 cm)
* '''Weight''': 25 lbs (11.3 kg)
 
== General Maintenance ==
 
Common maintenance concerns include capacitor leakage, PRAM battery failure, and power supply issues.
 
For cleaning, battery maintenance, and inspection procedures, see the [[Macintosh IIvi General Maintenance]] page.
 
== Capacitor Replacement Guide ==
 
The Macintosh IIvi logic board contains surface-mount electrolytic capacitors that leak over time.
 
For capacitor specifications and procedures, see the [[Macintosh IIvi Capacitor Replacement Guide]].
 
== Troubleshooting ==
 
Common issues include startup failures, video problems, and SCSI errors.
 
For diagnostics, see the [[Macintosh IIvi Troubleshooting]] page.
 
== Technical Specifications ==


== Specifications ==
<templatestyles src="Template:StyledTable/styles.css" />
<templatestyles src="Template:StyledTable/styles.css" />
 
{| class="wikitable styled-table" style="width:88%;"
{| class="wikitable styled-table" style="width:90%; text-align:center;"
|+'''Macintosh IIvi specifications (Apple)'''
! Sub-system !! Specification (Macintosh IIvi, October 1992)
! Item !! Specification
|-
|-
| '''CPU''' || Motorola 68030 @ 16 MHz
| Processor || Motorola 68030 at 15.6672 MHz with built-in MMU; ROM and RAM reads take four clocks (one wait state)<ref name="dn" />
|-
|-
| '''FPU''' || Optional Motorola 68882
| FPU || None fitted; socket for a 68882, which runs at the processor's speed<ref name="dn" />
|-
|-
| '''Bus Speed''' || 16 MHz
| Cache || None<ref name="dn" />
|-
|-
| '''ROM''' || 1 MB
| RAM || 4 MB soldered; four 30-pin SIMM sockets, all four filled with identical 80 ns SIMMs of 256K to 16 MB; 68 MB maximum<ref name="dn" />
|-
|-
| '''RAM''' || 4 MB onboard + 4 × 30-pin SIMM slots (68 MB max)
| ROM || 1 MB<ref name="ss" />
|-
|-
| '''L1 Cache''' || 0.5 KB (on-chip)
| VRAM || 512K or 1 MB on two VRAM SIMMs, 100 ns, fitted in identical pairs<ref name="dn" />
|-
|-
| '''L2 Cache''' || None
| Video modes || 512K: 512 × 384 at up to 16 bits per pixel, 640 × 480 at up to 8. 1 MB: 640 × 480 at up to 16<ref name="ss" />
|-
|-
| '''Video''' || 640 × 480 @ 8-bit (512K VRAM), 16-bit with 1 MB
| Expansion || Three NuBus slots (13.9 W each, 41.7 W total); one 120-pin accelerator slot (5 W)<ref name="dn" />
|-
|-
| '''Sound''' || 8-bit stereo output, mono input
| Serial || Two RS-232/RS-422 ports, 230.4 kbaud maximum, 0.92 Mbit/s with an external clock<ref name="ss" />
|-
|-
| '''Storage''' || 40/80/160/400 MB SCSI HDD, 1.44 MB SuperDrive
| Power supply || 85-270 V AC, automatic; 112 W maximum, 130 W peak; switched monitor outlet, 3 A<ref name="dn" />
|-
|-
| '''Expansion''' || Apple: '''three NuBus slots''' and '''one accelerator slot'''<ref name="ssiivx" />; plus a 5.25-inch bay
| Environment || Operating 10-40 °C; storage -40 to 47 °C; 5-95 % relative humidity; 0-3,048 m<ref name="ss" />
|-
|-
| '''Ports''' || 2 × ADB, 2 × Serial, SCSI, Video, Audio I/O
| Case || Painted sheet metal with plastic front and back bezels; 325 × 412 × 150 mm (13 × 16.5 × 6 in)<ref name="dn" />
|}
|}


=== Identification ===
The Service Source prints the A/C line input as 100-120 V AC at 200 W; the developer note gives 85-270 V AC, selected automatically.<ref name="ss" /><ref name="dn" /> Low End Mac's 230 W for the supply is not Apple's figure, which is 112 W.<ref name="lem">{{cite web |url=https://lowendmac.com/1992/mac-iivi/ |title=Mac IIvi |publisher=Low End Mac |access-date=2026-09-30}} 16 MHz 68030 on a 16 MHz bus; never sold in the United States; no L2 cache but accepts an accelerator; code names Brazil and Lego; discontinued 10 February 1993; power supply given as 230 W.</ref><ref name="dn" />
{| class="wikitable styled-table" style="width:60%;"
 
|-
== Hardware ==
! Identifier !! Value
=== Logic board ===
|-
Apple's logic board part is 661-0760 for the IIvi (661-0759 IIvx, 661-0761 Performa 600).<ref name="ss" /> On the IIvi board Recap-a-Mac photographed (820-0373-A), the cache SRAM positions and the FPU socket are empty.<ref name="ram">{{cite web |url=https://recapamac.com.au/macintosh-iivi/ |title=Macintosh IIvi |publisher=Recap-a-Mac |access-date=2026-09-30}} Annotated photograph of logic board 820-0373-A, hosted here as [[:File:Mac IIvi Recap Guide.jpg]]: 6 × 47 µF 16 V surface-mount and 2 × 220 µF 16 V axial; replacement parts KEMET T491D476K016AT and Vishay MAL213825221E3; notes leaky capacitors and exploding batteries on the IIvi.</ref> The VASP chip combines video, memory mapping, sound and glue logic, and a 68HC05 microcontroller runs ADB, the clock, parameter RAM and soft power.<ref name="dn" /> Software must use the Gestalt Manager to find out whether a IIvi has an FPU.<ref name="dn" />
| Apple Model Number || M1350
 
|-
Because RAM is tested and sized before video starts, the screen stays blank for a while at start-up, longer with more RAM fitted.<ref name="dn" />
| Gestalt ID || 44
 
|}
=== Accelerator slot ===
The 120-pin slot takes accelerator cards. Apple warns that it is not compatible with processor-direct cards for other Macintosh models and that fitting one may damage the card and the computer; cards must stay within 5 W.<ref name="dn" /> Low End Mac notes that the IIvi cannot take a cache card, but can take an accelerator.<ref name="lem" />
 
=== SCSI and CD-ROM ===
An active terminator on the logic board terminates the internal bus when no external device is attached. The 3.5-inch hard drive must be terminated; a device in the 5.25-inch bay must not be. Apple's internal CD-ROM uses SCSI ID 3.<ref name="dn" />
 
=== Power supply ===
Apple part 661-0758, shared with the IIvx and Centris 650; Apple Rescue of Denver lists it as Apple 614-0009, 112 W, made by Delta (SMP-120EB) or Astec (AA16870).<ref name="ss" /><ref name="arod">{{cite web |url=https://applerescueofdenver.com/products-page/macintosh-to-powerpc/shop-by-model-desktop/macintosh-iivi-iivx-power-mac-7100-quadra-650/quadra-650-iivi-iivx-power-mac-7100-performa-600-power-supply/ |title=Quadra 650, IIvi, IIvx, Power Mac 7100, Performa 600 – Power Supply |publisher=Apple Rescue of Denver |access-date=2026-09-30}}</ref> Its ratings from Apple's developer note are on [[Macintosh IIvi General Maintenance]]. Apple publishes no rail tolerances and no adjustment.<ref name="ss" />
 
=== Battery ===
A lithium backup battery keeps the clock and PRAM when the machine is unplugged.<ref name="dn" /> Apple's test: measure on the 10 V DC range and replace the battery below 2.8 V.<ref name="ss" /> Recap-a-Mac's IIvi board photograph shows heavy corrosion around the battery holder.<ref name="ram" />
 
=== Capacitors ===
Logic board 820-0373-A has six 47 µF 16 V surface-mount electrolytics and two 220 µF 16 V axials.<ref name="ram" /> See [[Macintosh IIvi Capacitor Replacement Guide]].
 
== Maintenance and repair ==
* [[Macintosh IIvi General Maintenance]]: opening the case, battery, power supply, drives and memory.
* [[Macintosh IIvi Troubleshooting]]: Apple's symptom charts.
* [[Macintosh IIvi Capacitor Replacement Guide]]: logic board capacitors and take-apart.
 
== Documentation ==
* [[Macintosh IIvx/IIvi/Performa 600 Service Source]]: Apple's service manual.<ref name="ss" />
* [[Macintosh IIvx IIvi and Performa 600 Developer Note]]: Apple's developer note.<ref name="dn" />


== See Also ==
<pdf width="800" height="500">File:Macintosh_iivx.vi.perf_600.pdf</pdf>


* [[Macintosh IIvx]]
== Related pages ==
* Performa 600
* [[Macintosh IIvx]], the 32 MHz version with FPU and cache
* [[Macintosh Performa 600]]
* [[Macintosh Centris 650]]
* [[Macintosh Centris 650]]
* [[Sad Mac Error Codes]]


== References ==
== References ==
<references />
<references />


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

Revision as of 16:10, 30 September 2026

Macintosh IIvi
Macintosh IIvi (All About Apple museum)
Specifications
ManufacturerApple Computer, Inc.
TypeDesktop personal computer
Released19 October 1992
Discontinued10 February 1993
Intro priceUS$2,900 (4 MB, 80 MB) at introduction; not sold in the United States
CPUMotorola 68030 at 16 MHz (15.6672 MHz)
Memory4 MB soldered plus four 30-pin SIMM sockets, 68 MB maximum (80 ns)
StorageInternal SCSI hard drive, 40-400 MB; optional internal CD-ROM
Display—
SoundMono output through the speaker, stereo CD audio at the headphone jack; mono sound input
GraphicsBuilt in (DB-15), 512 KB or 1 MB VRAM on two VRAM SIMMs
ROM1 MB
FPU / coprocessorOptional 68882 (socket on the logic board)
MediaInternal 1.4 MB floppy drive
Ports / interfaceTwo ADB, two RS-232/RS-422 serial (mini DIN-8), SCSI (DB-25), video (DB-15), headphone and microphone jacks
ExpansionThree NuBus slots, one 120-pin accelerator slot, one 5.25-inch bay
Power85-270 V AC auto-ranging; 112 W DC maximum
Dimensions6 × 13 × 16.5 in (150 × 325 × 412 mm)
Weight25 lb (11.3 kg)
OS / FirmwareSystem 7.1 to Mac OS 7.6.1
SuccessorMacintosh Centris 650
CodenameBrazil, Lego
Model no.M1350 (Gestalt ID 44)

The Macintosh IIvi is a desktop Macintosh introduced by Apple on 19 October 1992 and discontinued on 10 February 1993.[1] It is the low-cost version of the Macintosh IIvx: the same case and logic board design, with the 68030 at 16 MHz instead of 32 MHz, no cache and no FPU, though the board has a socket for one.[2] Apple offered it in Europe and the Pacific rather than the United States, where the Performa 600 took its place.[3][1] Apple's service manual covers it with the IIvx and Performa 600.[4]

Specifications

Macintosh IIvi specifications (Apple)
Item Specification
Processor Motorola 68030 at 15.6672 MHz with built-in MMU; ROM and RAM reads take four clocks (one wait state)[2]
FPU None fitted; socket for a 68882, which runs at the processor's speed[2]
Cache None[2]
RAM 4 MB soldered; four 30-pin SIMM sockets, all four filled with identical 80 ns SIMMs of 256K to 16 MB; 68 MB maximum[2]
ROM 1 MB[4]
VRAM 512K or 1 MB on two VRAM SIMMs, 100 ns, fitted in identical pairs[2]
Video modes 512K: 512 × 384 at up to 16 bits per pixel, 640 × 480 at up to 8. 1 MB: 640 × 480 at up to 16[4]
Expansion Three NuBus slots (13.9 W each, 41.7 W total); one 120-pin accelerator slot (5 W)[2]
Serial Two RS-232/RS-422 ports, 230.4 kbaud maximum, 0.92 Mbit/s with an external clock[4]
Power supply 85-270 V AC, automatic; 112 W maximum, 130 W peak; switched monitor outlet, 3 A[2]
Environment Operating 10-40 °C; storage -40 to 47 °C; 5-95 % relative humidity; 0-3,048 m[4]
Case Painted sheet metal with plastic front and back bezels; 325 × 412 × 150 mm (13 × 16.5 × 6 in)[2]

The Service Source prints the A/C line input as 100-120 V AC at 200 W; the developer note gives 85-270 V AC, selected automatically.[4][2] Low End Mac's 230 W for the supply is not Apple's figure, which is 112 W.[5][2]

Hardware

Logic board

Apple's logic board part is 661-0760 for the IIvi (661-0759 IIvx, 661-0761 Performa 600).[4] On the IIvi board Recap-a-Mac photographed (820-0373-A), the cache SRAM positions and the FPU socket are empty.[6] The VASP chip combines video, memory mapping, sound and glue logic, and a 68HC05 microcontroller runs ADB, the clock, parameter RAM and soft power.[2] Software must use the Gestalt Manager to find out whether a IIvi has an FPU.[2]

Because RAM is tested and sized before video starts, the screen stays blank for a while at start-up, longer with more RAM fitted.[2]

Accelerator slot

The 120-pin slot takes accelerator cards. Apple warns that it is not compatible with processor-direct cards for other Macintosh models and that fitting one may damage the card and the computer; cards must stay within 5 W.[2] Low End Mac notes that the IIvi cannot take a cache card, but can take an accelerator.[5]

SCSI and CD-ROM

An active terminator on the logic board terminates the internal bus when no external device is attached. The 3.5-inch hard drive must be terminated; a device in the 5.25-inch bay must not be. Apple's internal CD-ROM uses SCSI ID 3.[2]

Power supply

Apple part 661-0758, shared with the IIvx and Centris 650; Apple Rescue of Denver lists it as Apple 614-0009, 112 W, made by Delta (SMP-120EB) or Astec (AA16870).[4][7] Its ratings from Apple's developer note are on Macintosh IIvi General Maintenance. Apple publishes no rail tolerances and no adjustment.[4]

Battery

A lithium backup battery keeps the clock and PRAM when the machine is unplugged.[2] Apple's test: measure on the 10 V DC range and replace the battery below 2.8 V.[4] Recap-a-Mac's IIvi board photograph shows heavy corrosion around the battery holder.[6]

Capacitors

Logic board 820-0373-A has six 47 µF 16 V surface-mount electrolytics and two 220 µF 16 V axials.[6] See Macintosh IIvi Capacitor Replacement Guide.

Maintenance and repair

Documentation

References

  1. ↑ 1.0 1.1 Apple Macintosh IIvi Specs, EveryMac—link(accessed 2026-09-30) Introduced 19 October 1992, discontinued 10 February 1993; sold in South America, Europe and Japan, not in the United States; 40, 80, 160 or 400 MB hard drive; Japanese order numbers M1378J/A (4 MB, floppy only) and M1354J/A (4 MB, 160 MB).
  2. ↑ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 2.11 2.12 2.13 2.14 2.15 2.16 2.17 Apple Computer, Macintosh IIvx Developer Note (1992), also covering the Macintosh IIvi and Performa 600, File:Macintosh IIvx IIvi and Performa 600 Developer Note.pdf; see Macintosh IIvx IIvi and Performa 600 Developer Note. Printed page numbers: features and Table 1-1 comparison pp. 2-3; compatibility pp. 4-5; ROM, RAM, VRAM pp. 9-10; ADB, clock, soft power pp. 19-20; accelerator slot power p. 25; enclosure and power supply pp. 27-28; internal drives pp. 29-32; software p. 35.
  3. ↑ Charles Seiter, "Macintosh IIvx: The latest desktop Mac is a faster version of the Performa 600", Macworld, December 1992, pp. 206-207, archive.org. The IIvi: offered to users in Europe and the Pacific; 68030 at 16 MHz; no 68882 but a slot to add one; no cache; base IIvi with 4 MB and an 80 MB hard drive US$2,900.
  4. ↑ 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 4.10 Apple Computer, Macintosh IIvx, Macintosh IIvi, Performa 600 Service Source, File:Macintosh iivx.vi.perf 600.pdf; see Macintosh IIvx/IIvi/Performa 600 Service Source. Page numbers are the PDF's: Specifications pp. 5-13; Symptom Charts pp. 16-24; Take Apart pp. 26-51; Battery Verification pp. 68-69; Exploded View p. 76.
  5. ↑ 5.0 5.1 Mac IIvi, Low End Mac—link(accessed 2026-09-30) 16 MHz 68030 on a 16 MHz bus; never sold in the United States; no L2 cache but accepts an accelerator; code names Brazil and Lego; discontinued 10 February 1993; power supply given as 230 W.
  6. ↑ 6.0 6.1 6.2 Macintosh IIvi, Recap-a-Mac—link(accessed 2026-09-30) Annotated photograph of logic board 820-0373-A, hosted here as File:Mac IIvi Recap Guide.jpg: 6 × 47 µF 16 V surface-mount and 2 × 220 µF 16 V axial; replacement parts KEMET T491D476K016AT and Vishay MAL213825221E3; notes leaky capacitors and exploding batteries on the IIvi.
  7. ↑ Quadra 650, IIvi, IIvx, Power Mac 7100, Performa 600 – Power Supply, Apple Rescue of Denver—link(accessed 2026-09-30)


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