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Verify against Apple's Power Macintosh/Performa 5260, 5280 Series Service Source (hosted): the DRAM minimum is 16 MB, not 8 MB (8 MB is the 5200 and 5300 figure); corrected the case dimensions (width 16 in, depth 15.1 in - they were transposed); stated the sound properly (16-bit mono in, 16-bit stereo out at 0.5 V RMS into 39 ohms, 16-bit stereo speakers) where only the input was given; added Apple's full electrical figures - 240 W and 4.0 A maximum for this family against 125 W and 2.5 A for...
Restore 70% width so the table sits beside the infobox
 
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{{Infobox computer
{{Infobox computer
| name        = Macintosh Performa 5280
| name        = Macintosh Performa 5280
| image        = [[File:Macintosh_Performa_5200.jpg]]
| image        = [[File:Macintosh Performa 5260 front.jpg|260px|frameless]]
| caption      = Macintosh Performa 5280
| caption      = Performa 5260/120, which Apple built to the same specification as the 5280 (photo: Stephen Edmonds, CC BY-SA 2.5)
| manufacturer = Apple Computer, Inc.
| manufacturer = Apple Computer, Inc.
| type        = All-in-one Personal Computer
| type        = All-in-one personal computer
| release date = November 12, 1996
| release_date = November 12, 1996<ref name="ts5280" />
| discontinued = June 1, 1997
| discontinued = June 1, 1997<ref name="em5280" />
| cpu          = PowerPC 603e @ 120 MHz
| cpu          = PowerPC 603e at 120 MHz<ref name="ss526spec" />
| memory      = 16 MB RAM minimum, expandable to 64 MB (Apple's figure)
| memory      = 16 MB minimum; two 72-pin SIMM slots, 64 MB maximum<ref name="ss526spec" />
| storage      = 1.2 GB IDE hard drive, 8X CD-ROM
| storage      = 800 MB, 1.2 GB or 1.6 GB IDE hard drive; AppleCD 1200i CD-ROM; 1.4 MB SuperDrive<ref name="ss526spec" />
| display      = 14" Shadow Mask CRT (640×480 at 16-bit color)
| display      = Built-in 14-inch shadow-mask colour display, 640 × 480<ref name="ss526spec" />
| sound        = 16-bit monophonic input, 16-bit stereo output at nominally 0.5 V RMS into 39 Ω; internal speakers deliver 16-bit stereo (Apple's figures)
| sound        = 16-bit stereo output, 16-bit mono input<ref name="ss526spec" />
| dimensions  = 17.5" H × 16.0" W × 15.1" D (445 × 406 × 383 mm)
| dimensions  = 17.5 × 16 × 15.1 in (445 × 406 × 383 mm), H × W × D<ref name="ss526spec" />
| weight      = 45 lbs (20.4 kg)
| weight      = 45 lb (20.4 kg)<ref name="ts5280" />
| os          = System 7.5.3 – Mac OS 9.1
| power        = 100–240 V AC, 47–63 Hz<ref name="ss526spec" />
| os          = System 7.5.3<ref name="ts5280" />
| predecessor  = [[Macintosh Performa 5260CD|Performa 5260CD]]
| predecessor  = [[Macintosh Performa 5260CD|Performa 5260CD]]
| successor    = [[Macintosh Performa 5400CD|Performa 5400CD]]
| successor    = [[Macintosh Performa 5400CD|Performa 5400CD]]
| model        = M5182J/A
}}
}}
The '''Macintosh Performa 5280''' is an all-in-one personal computer manufactured by Apple Computer, Inc., introduced on November 12, 1996.<ref>{{cite web |url=https://everymac.com/systems/apple/mac_performa/specs/mac_performa_5280_120.html |title=Apple Macintosh Performa 5280/120 Specs |publisher=EveryMac.com |access-date=2026-02-10}}</ref> It is a faster variant of the [[Macintosh Performa 5260CD|Performa 5260CD]] with a 120 MHz PowerPC 603e processor and 8X CD-ROM drive, sold exclusively in Japan.
The '''Macintosh Performa 5280''' is an all-in-one Macintosh with a 120 MHz PowerPC 603e and a built-in 14-inch display, which Apple sold in Japan. Apple's technical-specification page dates it to November 12, 1996.<ref name="ts5280">{{cite web |url=https://support.apple.com/en-us/112326 |title=Macintosh Performa 5280: Technical Specifications |publisher=Apple |access-date=2026-09-30}} Source for the introduction date, "not sold in the U.S.", 40 MHz bus, optional level 2 cache, 4.5 V alkaline battery, 45 lb, System 7.5.3 and the 8x CD-ROM speed.</ref> Apple services it with the Power Macintosh 5260/100 and 5260/120 and the international Performa 5260/120 in one manual, which describes the 5260/120 and 5280 as the same machine: the 5260/100 with a 120 MHz processor, 16 MB of RAM and an AppleCD 1200i drive. The Performa 5260/120 was sold in Canada and Australia and the Power Macintosh 5260/120 in the United States and Canada.<ref name="ss526basics">Apple Computer, ''Power Macintosh/Performa 5260, 5280 Series'' Service Source, 1997, cover (models covered) and Basics chapter, p. 2 ("5260/120 and 5280"). Hosted as [[:File:Powermac.perf_5260.5280.pdf]]; see [[Power Macintosh/Performa 5260, 5280 Series Service Source]].</ref> EveryMac gives the Japanese order number as M5182J/A.<ref name="em5280">{{cite web |url=https://everymac.com/systems/apple/mac_performa/specs/mac_performa_5280_120.html |title=Macintosh Performa 5280/120 Specs |publisher=EveryMac.com |access-date=2026-09-30}}</ref>


The Performa 5280 is identical to the Performa 5260/120, but shipped with a different software bundle. The educational version, the [[Power Macintosh 5260|Power Macintosh 5260/120]], was sold in North America.<ref>{{cite web |url=https://en.wikipedia.org/wiki/Power_Macintosh_5260 |title=Power Macintosh 5260 |publisher=Wikipedia |access-date=2026-02-10}}</ref>
The 5260 and 5280 look like the [[Macintosh Performa 5200CD|Performa 5200]] and [[Macintosh Performa 5300CD|5300]] but are a separate design. The display is a 14-inch tube where the 5200 and 5300 have a 15-inch one, and the logic board, power supply board, analogue/video board and CRT all carry different Apple part numbers. Apple's 5200/5300 manual is marked "not 5260, 5280" on its cover.<ref name="ss526ev">Apple Computer, ''Power Macintosh/Performa 5260, 5280 Series'' Service Source, 1997, Exploded View, p. 1. Hosted as [[:File:Powermac.perf_5260.5280.pdf]].</ref><ref name="ss52cover">Apple Computer, ''Power Macintosh/Performa 5200 and 5300 (not 5260, 5280)'' Service Source, 1997, cover and Exploded View, p. 1. Hosted as [[:File:Powermac.perf_5200.5300.pdf]].</ref>


== Differences from Performa 5260CD ==
== Specifications ==
 
<templatestyles src="Template:StyledTable/styles.css" />
The Performa 5280 differs from the base [[Macintosh Performa 5260CD|Performa 5260CD]] in the following ways:
{| class="wikitable styled-table" style="width:70%; text-align:left;"
 
|+'''Performa 5280 specifications (Apple)'''
* '''CPU Speed:''' 120 MHz (vs 100 MHz)
! Item !! Specification
* '''CD-ROM:''' 8X (vs 4X)
* '''Market:''' Sold exclusively in Japan
* '''Model Number:''' M5182J/A
* '''Introduction:''' November 1996 (vs April 1996)
 
== Architecture and Processor ==
 
The Performa 5280 uses the PowerPC 603e processor running at 120 MHz with a 40 MHz system bus. The 603e is a 32-bit processor with a 64-bit data path and includes an integrated floating-point unit.
 
=== Cache Configuration ===
* '''L1 Cache:''' 32 KB (16 KB instruction + 16 KB data)
* '''L2 Cache:''' 256 KB (optional expansion slot)
 
== Memory and Storage ==
 
=== RAM Configuration ===
{| class="wikitable" style="width:70%; text-align:center;"
|-
|-
! Specification !! Details
| Processor || PowerPC 603e at 120 MHz with integrated FPU; 64-bit PowerPC bus<ref name="ss526spec">Apple Computer, ''Power Macintosh/Performa 5260, 5280 Series'' Service Source, 1997, Specifications chapter: Processor (p. 1), Memory (p. 2), Disk Storage (p. 3), I/O Interfaces (pp. 4–6), I/O Devices (p. 7), Sound and Video (pp. 8–9, 14), Electrical (p. 15), Physical (p. 16). Hosted as [[:File:Powermac.perf_5260.5280.pdf]].</ref>
|-
|-
| '''RAM Type''' || 72-pin SIMM
| Cache || 32 KB level 1. The Service Source lists 256K of level 2 cache; Apple's technical-specification page lists level 2 cache as optional<ref name="ss526spec" /><ref name="ts5280" />
|-
|-
| '''Minimum Speed''' || 80 ns
| ROM || 4 MB<ref name="ss526spec" />
|-
| '''Standard RAM''' || 8 MB or 16 MB
|-
| '''Maximum RAM''' || 64 MB
|-
| '''RAM Slots''' || 2
|}
 
RAM cannot be interleaved on this system. 1 MB of system RAM is permanently dedicated to video function.
 
=== Storage Systems ===
* '''Hard Drive:''' 1.2 GB IDE internal drive
* '''Floppy Drive:''' 1.44 MB 3.5" manual-inject
* '''CD-ROM:''' 8X
 
== Display and Graphics ==
 
The Performa 5280 features a built-in 14" Shadow Mask RGB CRT display running at 640×480 resolution with 16-bit color. Video memory consists of 1 MB dedicated from system RAM and cannot be expanded.
 
== Input/Output and Expansion ==
 
=== Port Configuration ===
* '''ADB:''' 1 port for keyboard and mouse
* '''Serial:''' 2 ports (printer and modem)
* '''Audio In:''' 1 port (16-bit mono)
* '''Audio Out:''' 1 port (stereo)
* '''SCSI:''' 1 external DB-25 port
 
=== Expansion Slots ===
* '''LC PDS:''' 1 slot
* '''Comm Slot:''' 1 slot
* '''Video I/O Slot:''' 1 slot
* '''TV Tuner Slot:''' 1 slot
 
== General Maintenance ==
 
For detailed maintenance practices including cleaning, PRAM battery management, connector corrosion prevention, and voltage adjustments, refer to the dedicated [[Macintosh Performa 5260CD General Maintenance]] page.
 
== Capacitor Replacement Guide ==
 
Detailed capacitor replacement guidelines for the logic board can be found on the [[Macintosh Performa 5260CD Capacitor Replacement Guide]] page.
 
== Troubleshooting ==
 
A comprehensive troubleshooting guide addressing no power, chime but no video, intermittent operation, Sad Mac errors, and floppy drive problems is available on the [[Macintosh Performa 5260CD Troubleshooting]] page.
 
== Technical Details ==
 
<templatestyles src="Template:StyledTable/styles.css" />
 
=== System Architecture at a Glance ===
{| class="wikitable styled-table" style="width:90%; text-align:center;"
! Sub-system !! Specification (Performa 5280, November 1996)
|-
|-
| '''CPU''' || PowerPC 603e @ 120 MHz
| RAM || 16 MB minimum in 72-pin, 80 ns fast-page-mode SIMMs; two slots, 64 MB maximum<ref name="ss526spec" /><ref name="ss526basics" />
|-
|-
| '''System Bus''' || 40 MHz
| Video || 1 MB DRAM frame buffer on the logic board; 640 × 480 at 16-bit is the only mode for the built-in display<ref name="ss526spec" />
|-
|-
| '''ROM''' || 4 MB
| Display || 14-inch shadow mask, 12.8-inch viewable image; 0.28 mm dot pitch; 66.7 Hz vertical; 9,300 K white point<ref name="ss526spec" />
|-
|-
| '''RAM''' || 8-64 MB (72-pin SIMM)
| Storage || 800 MB, 1.2 GB or 1.6 GB IDE hard drive; AppleCD 1200i CD-ROM; 1.4 MB Apple SuperDrive, manual insert<ref name="ss526spec" />
|-
|-
| '''Video''' || 640 × 480 @ 16-bit color
| Sound || 16-bit mono input (stereo input is combined to mono); 16-bit stereo output, nominally 0.5 V RMS into 39 ohms; internal speakers deliver 16-bit stereo<ref name="ss526spec" />
|-
|-
| '''VRAM''' || 1 MB (from system RAM)
| Ports || Two RS-232/422 serial ports (mini DIN-8); one SCSI port (DB-25, up to seven devices); one ADB port; DB-15 mirror video output with the optional video connector kit (640 × 480)<ref name="ss526spec" />
|-
|-
| '''Sound''' || 16-bit mono input, stereo output
| Expansion || 96/114-pin LC processor-direct slot; 112-pin communications slot (68040-bus); 60-pin video-in slot; 10-pin TV tuner port<ref name="ss526spec" />
|-
|-
| '''Disks''' || 1.44 MB floppy, 1.2 GB HDD, 8X CD-ROM
| Power || 100–240 V AC, 47–63 Hz. Surge 300 V RMS for 100 ms; peak inrush 40 A; 4.0 A maximum for all line and load conditions<ref name="ss526spec" />
|-
|-
| '''Ports''' || ADB, SCSI, Serial × 2, Audio I/O
| Clock battery || 4.5 V alkaline pack on a connector; replace below 3.0 V<ref name="ts5280" /><ref name="ss526ap">Apple Computer, ''Power Macintosh/Performa 5260, 5280 Series'' Service Source, 1997, Additional Procedures chapter: Battery Verification (pp. 1–2), Battery Replacement (pp. 3–4), Cuda Chip Reset (p. 5), Logic Board Reset (pp. 6–9). Hosted as [[:File:Powermac.perf_5260.5280.pdf]].</ref>
|}
|}


== See Also ==
Apple's power figures for this family do not agree with each other. The Service Source Electrical page gives "240 W maximum" on its power line and "220 W maximum for all line and load conditions" two lines below; Apple's technical-specification page gives 125 W and 4 A.<ref name="ss526spec" /><ref name="ts5280" /> The Service Source weight entry ("With CD-ROM: 19 lb. (21.15 kg)") is also inconsistent, and the technical-specification page gives 45 lb. Treat the power figures as a guide only.
 
* [[Macintosh Performa 5260CD]] — Base model (100 MHz)
* [[Macintosh Performa 5270CD]] — 100 MHz variant (Asia/Europe)


== Service notes ==
Apple's service parts for the 5260/5280 family are the power supply board 661-1133, the analogue/video board assembly 661-1134, the CRT assembly 661-1135, and logic boards 661-1116 (100 MHz) and 661-1265 (120 MHz). None of these is a 5200/5300 part number.<ref name="ss526ev" />


== Apple's chassis, electrical and environmental figures ==
The 5260/5280 logic board has a Cuda reset button. Apple's first step for a machine that will not start is a logic board reset: remove the logic board, unplug the battery, wait 5 to 10 minutes, refit the battery, press the Cuda reset switch with a plastic tool and refit the board. The next step is a new power supply board.<ref name="ss526ap" /><ref name="ss526ts">Apple Computer, ''Power Macintosh/Performa 5260, 5280 Series'' Service Source, 1997, Troubleshooting chapter, Symptom Charts (System, Audio, Video). Hosted as [[:File:Powermac.perf_5260.5280.pdf]].</ref> A machine that starts from the rear switch but not from the keyboard, or restarts after Shut Down, has a faulty analogue board.<ref name="ss526ts" />


* '''CPU''' PowerPC 603e at 120 MHz, 64-bit PowerPC bus; '''ROM 4 MB'''; '''256K level 2 cache'''; '''1 MB DRAM frame buffer''' on board for video
The Adjustments chapter covers light meter setup, geometry and video only. The high-voltage adjustment in the 5200/5300 manual is marked "not for 5260, 5280" and does not apply to this machine.<ref name="ss526adj">Apple Computer, ''Power Macintosh/Performa 5260, 5280 Series'' Service Source, 1997, Adjustments chapter: Light Meter Setup (pp. 1–6), Geometry (pp. 7–17), Video (pp. 18–29). Hosted as [[:File:Powermac.perf_5260.5280.pdf]].</ref><ref name="ss52cover" /> The CRT holds a charge after the machine is unplugged; read [[CRT Discharge Procedure]] before opening it. The clock battery is alkaline, so leakage is neutralised with dilute white vinegar; see [[Battery Explosion, Capacitor or Corrosion Damage]].
* '''DRAM 16 MB minimum''', expandable to 64 MB (72-pin, 80 ns or faster). '''An 8 MB figure was previously given here; that is the 5200 and 5300 minimum, not this family's'''<ref name="ss5260">Apple Computer, ''Power Macintosh/Performa 5260, 5280 Series Service Source'' ([[Power Macintosh/Performa 5260, 5280 Series Service Source]], [[:File:Powermac.perf_5260.5280.pdf]]), Specifications, Adjustments (Geometry, Video) and Additional Procedures, Battery Verification (below 3.0 V, replace the battery).</ref>
* '''Dimensions''' 17.5 in (445 mm) H × '''16 in (406 mm) W''' × '''15.1 in (383 mm) D'''. Several pages on this wiki had the width and depth transposed
* '''Line voltage''' 100–240 VAC; '''frequency''' 47–63 Hz; '''power 240 W maximum'''
* '''Surge voltage''' 300 V rms for 100 ms; '''peak inrush current 40 A pk'''; '''current 4.0 A maximum''' for all line and load conditions; '''220 W maximum''' for all line and load conditions<ref name="ss5260" />
* '''Operating''' 10–40 °C; '''transit (72 h)''' −40 to +65 °C; '''storage (6 months)''' −40 to +47 °C; humidity 20–95 % non-condensing; altitude 0–10,000 ft
* '''PRAM battery''' 3.6 V ½AA lithium; Apple: '''replace below 3.0 V'''. Neutralise lithium leakage with bicarbonate of soda, not vinegar<ref name="ss5260" />


'''Apple's own weight figure for this chassis is internally contradictory and should not be quoted.''' It prints "Without CD-ROM: 17 lb. With CD-ROM: 19 lb. (21.15 kg)" — 19 lb is 8.6 kg, not 21.15 kg, and 17/19 lb is what the '''LC 630''' volume gives for a much smaller machine. The 21 kg / ~47 lb figure is the plausible one for a 15-inch all-in-one, and that is what this page carries, but it is flagged rather than presented as Apple's.
The Performa 5200CD guides cover the general procedures for this style of machine. Their part numbers and high-voltage adjustment are for the 5200/5300 and do not apply to the 5280:
* [[Macintosh Performa 5200CD General Maintenance]]
* [[Macintosh Performa 5200CD Troubleshooting]]
* [[Macintosh Performa 5200CD Capacitor Replacement Guide]]


'''Apple's built-in display figures''' for the 5260 and 5280: '''14-inch shadow mask, 12.8-inch viewable'''; dot pitch '''0.28 mm'''; vertical frequency '''66.7 Hz'''; active raster '''9.5 × 7.3 in'''; white point '''9,300 K'''; shipping brightness '''25 foot-lamberts'''; aluminised '''P22''' phosphor. Apple gives one video mode: '''640 × 480 at 16-bit colour'''. Note the '''14-inch''' tube — the 5200 and 5300 are 15-inch, and the two families are otherwise very similar.
== Documentation ==
<pdf width="800" height="500">File:Powermac.perf_5260.5280.pdf</pdf>


'''There is no high-voltage adjustment for this family.''' Apple publishes one for the 5200 and 5300 and marks every page of it "not for 5260, 5280". The Adjustments chapter here is '''Geometry''' and '''Video''' only, and Apple publishes '''no rail tolerance and no power-supply adjustment'''. The "+5 V 4.85–5.15 V / +12 V 11.90–12.75 V" pair that circulates on this wiki is Apple's Macintosh Plus and 128K/512K procedure with voltage test cable 077-0135.<ref name="ss5260" />
Download: [[:File:Powermac.perf_5260.5280.pdf|Powermac.perf_5260.5280.pdf]]. Description page: [[Power Macintosh/Performa 5260, 5280 Series Service Source]].


'''Note also the different supply rating.''' Apple gives this family '''240 W''' and '''4.0 A''' maximum against '''125 W''' and '''2.5 A''' for the 5200 and 5300, in the same-looking chassis — so a 5200-series supply is not a drop-in for a 5260.
== Related pages ==
* [[Macintosh Performa 5260CD]]
* [[Macintosh Performa 5270CD]]
* [[Power Macintosh 5260]]
* [[Macintosh Performa 5300CD]]
* [[CRT Discharge Procedure]]


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


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

Latest revision as of 20:21, 1 October 2026

Macintosh Performa 5280
Performa 5260/120, which Apple built to the same specification as the 5280 (photo: Stephen Edmonds, CC BY-SA 2.5)
Specifications
ManufacturerApple Computer, Inc.
TypeAll-in-one personal computer
ReleasedNovember 12, 1996[1]
DiscontinuedJune 1, 1997[2]
CPUPowerPC 603e at 120 MHz[3]
Memory16 MB minimum; two 72-pin SIMM slots, 64 MB maximum[3]
Storage800 MB, 1.2 GB or 1.6 GB IDE hard drive; AppleCD 1200i CD-ROM; 1.4 MB SuperDrive[3]
DisplayBuilt-in 14-inch shadow-mask colour display, 640 × 480[3]
Sound16-bit stereo output, 16-bit mono input[3]
Power100–240 V AC, 47–63 Hz[3]
Dimensions17.5 × 16 × 15.1 in (445 × 406 × 383 mm), H × W × D[3]
Weight45 lb (20.4 kg)[1]
OS / FirmwareSystem 7.5.3[1]
PredecessorPerforma 5260CD
SuccessorPerforma 5400CD

The Macintosh Performa 5280 is an all-in-one Macintosh with a 120 MHz PowerPC 603e and a built-in 14-inch display, which Apple sold in Japan. Apple's technical-specification page dates it to November 12, 1996.[1] Apple services it with the Power Macintosh 5260/100 and 5260/120 and the international Performa 5260/120 in one manual, which describes the 5260/120 and 5280 as the same machine: the 5260/100 with a 120 MHz processor, 16 MB of RAM and an AppleCD 1200i drive. The Performa 5260/120 was sold in Canada and Australia and the Power Macintosh 5260/120 in the United States and Canada.[4] EveryMac gives the Japanese order number as M5182J/A.[2]

The 5260 and 5280 look like the Performa 5200 and 5300 but are a separate design. The display is a 14-inch tube where the 5200 and 5300 have a 15-inch one, and the logic board, power supply board, analogue/video board and CRT all carry different Apple part numbers. Apple's 5200/5300 manual is marked "not 5260, 5280" on its cover.[5][6]

Specifications

[edit | edit source]
Performa 5280 specifications (Apple)
Item Specification
Processor PowerPC 603e at 120 MHz with integrated FPU; 64-bit PowerPC bus[3]
Cache 32 KB level 1. The Service Source lists 256K of level 2 cache; Apple's technical-specification page lists level 2 cache as optional[3][1]
ROM 4 MB[3]
RAM 16 MB minimum in 72-pin, 80 ns fast-page-mode SIMMs; two slots, 64 MB maximum[3][4]
Video 1 MB DRAM frame buffer on the logic board; 640 × 480 at 16-bit is the only mode for the built-in display[3]
Display 14-inch shadow mask, 12.8-inch viewable image; 0.28 mm dot pitch; 66.7 Hz vertical; 9,300 K white point[3]
Storage 800 MB, 1.2 GB or 1.6 GB IDE hard drive; AppleCD 1200i CD-ROM; 1.4 MB Apple SuperDrive, manual insert[3]
Sound 16-bit mono input (stereo input is combined to mono); 16-bit stereo output, nominally 0.5 V RMS into 39 ohms; internal speakers deliver 16-bit stereo[3]
Ports Two RS-232/422 serial ports (mini DIN-8); one SCSI port (DB-25, up to seven devices); one ADB port; DB-15 mirror video output with the optional video connector kit (640 × 480)[3]
Expansion 96/114-pin LC processor-direct slot; 112-pin communications slot (68040-bus); 60-pin video-in slot; 10-pin TV tuner port[3]
Power 100–240 V AC, 47–63 Hz. Surge 300 V RMS for 100 ms; peak inrush 40 A; 4.0 A maximum for all line and load conditions[3]
Clock battery 4.5 V alkaline pack on a connector; replace below 3.0 V[1][7]

Apple's power figures for this family do not agree with each other. The Service Source Electrical page gives "240 W maximum" on its power line and "220 W maximum for all line and load conditions" two lines below; Apple's technical-specification page gives 125 W and 4 A.[3][1] The Service Source weight entry ("With CD-ROM: 19 lb. (21.15 kg)") is also inconsistent, and the technical-specification page gives 45 lb. Treat the power figures as a guide only.

Service notes

[edit | edit source]

Apple's service parts for the 5260/5280 family are the power supply board 661-1133, the analogue/video board assembly 661-1134, the CRT assembly 661-1135, and logic boards 661-1116 (100 MHz) and 661-1265 (120 MHz). None of these is a 5200/5300 part number.[5]

The 5260/5280 logic board has a Cuda reset button. Apple's first step for a machine that will not start is a logic board reset: remove the logic board, unplug the battery, wait 5 to 10 minutes, refit the battery, press the Cuda reset switch with a plastic tool and refit the board. The next step is a new power supply board.[7][8] A machine that starts from the rear switch but not from the keyboard, or restarts after Shut Down, has a faulty analogue board.[8]

The Adjustments chapter covers light meter setup, geometry and video only. The high-voltage adjustment in the 5200/5300 manual is marked "not for 5260, 5280" and does not apply to this machine.[9][6] The CRT holds a charge after the machine is unplugged; read CRT Discharge Procedure before opening it. The clock battery is alkaline, so leakage is neutralised with dilute white vinegar; see Battery Explosion, Capacitor or Corrosion Damage.

The Performa 5200CD guides cover the general procedures for this style of machine. Their part numbers and high-voltage adjustment are for the 5200/5300 and do not apply to the 5280:

Documentation

[edit | edit source]

Download: Powermac.perf_5260.5280.pdf. Description page: Power Macintosh/Performa 5260, 5280 Series Service Source.

[edit | edit source]

References

[edit | edit source]
  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Macintosh Performa 5280: Technical Specifications, Apple—link(accessed 2026-09-30) Source for the introduction date, "not sold in the U.S.", 40 MHz bus, optional level 2 cache, 4.5 V alkaline battery, 45 lb, System 7.5.3 and the 8x CD-ROM speed.
  2. ↑ 2.0 2.1 Macintosh Performa 5280/120 Specs, EveryMac.com—link(accessed 2026-09-30)
  3. ↑ 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 Apple Computer, Power Macintosh/Performa 5260, 5280 Series Service Source, 1997, Specifications chapter: Processor (p. 1), Memory (p. 2), Disk Storage (p. 3), I/O Interfaces (pp. 4–6), I/O Devices (p. 7), Sound and Video (pp. 8–9, 14), Electrical (p. 15), Physical (p. 16). Hosted as File:Powermac.perf_5260.5280.pdf.
  4. ↑ 4.0 4.1 Apple Computer, Power Macintosh/Performa 5260, 5280 Series Service Source, 1997, cover (models covered) and Basics chapter, p. 2 ("5260/120 and 5280"). Hosted as File:Powermac.perf_5260.5280.pdf; see Power Macintosh/Performa 5260, 5280 Series Service Source.
  5. ↑ 5.0 5.1 Apple Computer, Power Macintosh/Performa 5260, 5280 Series Service Source, 1997, Exploded View, p. 1. Hosted as File:Powermac.perf_5260.5280.pdf.
  6. ↑ 6.0 6.1 Apple Computer, Power Macintosh/Performa 5200 and 5300 (not 5260, 5280) Service Source, 1997, cover and Exploded View, p. 1. Hosted as File:Powermac.perf_5200.5300.pdf.
  7. ↑ 7.0 7.1 Apple Computer, Power Macintosh/Performa 5260, 5280 Series Service Source, 1997, Additional Procedures chapter: Battery Verification (pp. 1–2), Battery Replacement (pp. 3–4), Cuda Chip Reset (p. 5), Logic Board Reset (pp. 6–9). Hosted as File:Powermac.perf_5260.5280.pdf.
  8. ↑ 8.0 8.1 Apple Computer, Power Macintosh/Performa 5260, 5280 Series Service Source, 1997, Troubleshooting chapter, Symptom Charts (System, Audio, Video). Hosted as File:Powermac.perf_5260.5280.pdf.
  9. ↑ Apple Computer, Power Macintosh/Performa 5260, 5280 Series Service Source, 1997, Adjustments chapter: Light Meter Setup (pp. 1–6), Geometry (pp. 7–17), Video (pp. 18–29). Hosted as File:Powermac.perf_5260.5280.pdf.


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