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Apple service tools and diagnostics

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Apple special tools index (Apple Service Guide, 1990)
The "Special Tools Index" page of Apple's 1990 Apple Service Guide for Macintosh Computers, with the Apple part number of each tool

Apple service tools and diagnostics are the special tools and test software Apple specified for servicing its computers and displays, from the 68000-series Macintoshes onwards: the long Torx driver and pull-apart tool for the compact Macs, the CRT discharge tool, chip and SIMM extractors, loopback plugs, the light meters, high-voltage probe and plastic alignment tools used to adjust Apple's CRT displays, and the MacTest, MacTest Pro and Apple Personal Diagnostics programs. Apple's 1990 pocket service guide gives the part numbers of the special tools on one page; the later Service Sources name the rest.[1] General workshop tools are on Recommended Tools; the CRT procedure is on CRT Discharge Procedure.

Apple's special tools

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Special tools in the 1990 Apple Service Guide[1]
Tool Apple part number Used for
Torx driver 076-8053 Case screws of the compact Macintoshes
Pull-apart tool 076-8059 Prising the rear housing off a compact Macintosh
CRT discharge tool 076-0381 Discharging the CRT of a compact Macintosh or any Macintosh monitor
SIMM removal tool 076-8354 Removing SIMMs, for example in the Macintosh Plus memory upgrade
IWM/SWIM IC extraction tool 076-0341 Pulling the IWM chip in the Macintosh II FDHD SuperDrive upgrade
DB9 serial port plug (set of 2) 077-8129 Loopbacks for MacTest on the 128K and 512K
SCSI loopback test card 077-8219 SCSI test in MacTest on the Macintosh Plus

The uses are those given in the guide's procedures and in Apple's 1987 Technical Procedures for the Macintosh and Macintosh Plus.[1][2]

Ordinary tools in Apple's procedures

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The Special Tools Index lists only tools with Apple part numbers. Apple's 1987 procedures for the Macintosh and Macintosh Plus also list ordinary hand tools under "Materials Required", and two items used only for the adjustments:[3]

Other materials in Apple's 1987 procedures[3]
Tool Where Apple calls for it
Small flat-blade screwdriver Removing the cover, the power/sweep board, the logic board, the CRT and the internal disk drive; the yoke adjustments
Medium Phillips screwdriver Replacing keyswitches: six screws hold the back of the keyboard
Macintosh voltage test cable The power/sweep voltage adjustment. It plugs into the disk drive port, and its orange (12 V), red (5 V) and black (ground) leads go to the voltmeter
Plastic alignment tool Turning the voltage adjustment on the power/sweep board, and the video width and height adjustments
Digital voltmeter, accurate to 0.01 V The power/sweep voltage adjustment
Safety goggles; soft cloth or foam pad The take-apart procedures
Mirror; ruler The yoke and video adjustments, which are made from the rear of the machine with the screen watched in the mirror (the ruler for the video adjustments)

Apple's 1990 guide also says the CRT discharge can be repeated with a flat-blade screwdriver that has an insulated handle, once the discharge tool has been used; the full procedure is on CRT Discharge Procedure.[1] Apple gave no part numbers for the voltage test cable or the alignment tool in these documents.[1][3]

Torx drivers

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Apple's take-apart procedure for the Macintosh and Macintosh Plus lists a "15-inch Torx screwdriver" among the materials needed to remove the back cover.[2] The case screws are Torx (Apple part 435-5002 for the Plus) and sit at the bottom of deep holes, so the shaft must be long. The size is T15; iFixit's answer for the SE and SE/30 recommends an extra-long T15 driver.[2][4]

The PowerBooks use smaller sizes. Apple's own list gives the drivers and Apple part numbers that service providers could supply:[5]

PowerBook screwdrivers[5]
Machines Drivers
PowerBook 100 Torx #8 and #10
PowerBook Duo 200 series and 2300 Torx #8, plus Torx #6 or Phillips for the floppy mechanism
PowerBook 500 series Torx #6 and #8
PowerBook 5300 series Torx #8
PowerBook 1400 series Metric Phillips 00 and 01

Apple's part numbers are 077-0064 for the Torx #6, 077-0677 for the #8 and 077-0676 for the #10.[5] The PowerBook 500 Series Service Source says all nine screw types in those machines are Torx and need a T-8 or T-6 driver,[6] and the 190/5300 Service Source adds a #6 Torx for the floppy drive, a #10 for the hard drive bracket and jeweller's screwdrivers of 2.3 mm and #00.[7]

Pull-apart tool

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The pull-apart tool (076-8059) is a spreader for prising the rear housing of a compact Macintosh away from the front bezel.[1][8] Apple's later Service Sources call it a case spreader or a case cracker.[9][10] Apple's procedure for the Macintosh and Macintosh Plus:[2]

  1. Switch off and unplug the computer, and disconnect the keyboard, mouse and other cables.
  2. Prise off the reset/interrupt switch, if fitted, with a small flat-blade screwdriver, and remove the battery compartment cover.
  3. Lay the computer face down on a soft cloth or foam pad.
  4. Remove the case screws with the Torx driver. Apple's 1987 procedure lists five for the Macintosh and Plus, one of them inside the battery compartment; the 128K/512K Service Source counts four.[2][8][11]
  5. Work the pull-apart tool into the seam and prise the cover loose, then lift it straight up; the picture tube inside is fragile.
  6. Take off any grounding wriststrap before discharging the CRT.

Collectors have used other tools for the same job. The JagWerks SE/30 page describes a "Pony 3201" spring clamp as a substitute, and a third-party "Mac opener kit" from APS that held a long Torx driver, a pull-apart tool and a grounding wrist strap.[12]

CRT discharge tool

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Apple's CRT discharge tool 076-0381 is the one listed in the 1990 guide, for compact Macintoshes and Macintosh monitors.[1] The JagWerks page describes an older Apple tool, 076-0243, with a built-in 100 MΩ resistor intended for the 128K, 512K and Plus, and says 076-0381 has no resistor.[12] The procedure, and why a wrist strap must not be worn, is on CRT Discharge Procedure.

Tools in later Service Sources

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The Service Sources of the 1990s list the tools at the start of the take-apart chapter or of each procedure. Several call for tools that are not in the 1990 index:

Tools named in later Service Sources
Service Source Tools Apple lists
PowerBook 140, 145, 145B and 170; 160, 165 and 180; 165c and 180c The logic board take-apart tool, for separating the daughterboard from the motherboard, and on the 165c and 180c the cousin card from the daughterboard. Apple warns that rocking or peeling the boards apart damages the connectors, and refers to the "Special Tools" entry in its Bulletins/Service Notices chapter for ordering details; the hosted Service Sources give no part number for it.[13][14][15]
PowerBook Duo 200 series T-8 and T-10 Torx drivers, an IC extractor, a jeweller's flat-blade screwdriver and the Duo battery contact alignment tool. The alignment tool checks and resets the battery contacts after the CPU stiffener is refitted, and when a Duo shuts down or will not charge on battery.[16]
PowerBook Duo 2300c T-6, T-8 and T-10 Torx drivers, an IC extractor, a jeweller's flat-blade screwdriver, a #00 Phillips screwdriver and the Duo battery contact alignment tool[17]
PowerBook Duo Dock A small flat-blade and a #2 cross-tip screwdriver. The optional maths coprocessor on the original Duo Dock comes out with the VGC IC extraction tool, 076-0264.[18]
iBook and iBook (FireWire), 2002 A coin for the battery door, 5 mm and 4 mm nut drivers, a Torx T8, #0 and #1 Phillips screwdrivers, a very small jeweller's flat-blade screwdriver, an ESD-safe non-marring flat-blade tool "such as the nylon probe tool 922-5065", an IC extractor for the display cable connector, and fine needle-nose pliers[19]
Power Mac G4 (Mirrored Drive Doors), 2002 #2 and #1 Phillips screwdrivers, a T-10 Torx driver or 2.5 mm Allen key, a small flat-blade screwdriver and needle-nose pliers. Apple recommends magnetised tools so that screws are not dropped inside the case.[20]
LaserWriter Pro 810 Phillips screwdrivers in several sizes and lengths, a chip puller, flat-blade screwdrivers and wire cutters[21]

The nylon probe 922-5065 is the "black stick". Apple still lists it under that number and name in its current repair tool lists.[22] The PowerBook 190/5300 and 500 series lists are under Torx drivers above.

Display and CRT adjustment tools

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Apple's adjustment procedures for its monitors and for the compact and all-in-one Macs need more than the screwdrivers used to take them apart. Apple's display and all-in-one Service Sources call for plastic or insulated tools on the controls, and warn that metal alignment tools are a shock hazard.[9]

Adjustment tools in Apple's display and compact Mac procedures
Tool Apple part number Where Apple calls for it
Plastic alignment tool None given Brightness on the Macintosh SE, and width and height with a plastic hex alignment tool (the raster is set to 7 inches by 4.7 inches);[23] the 1987 Macintosh and Plus voltage, width and height adjustments;[3] an 8-inch or longer plastic alignment tool ("tweaker") for the AppleColor RGB Monitor[24]
Short hex-head plastic tool None given The geometry controls on the Color Classic. Apple says a long or thin tool flexes too much for fine adjustment, so the tool should be short and rigid.[9]
Insulated flat-blade and cross-tip screwdrivers None given Contrast and focus on the Classic II;[25] the yoke clamp screw on the Color Classic[9]
Light meter (R77, L-248 or 246) 076-0310 (R77) Setting luminance, for example the sub-contrast control; see Light meters below
Colour analyser or photometer None given Apple's first choice for checking luminance on the Multiple Scan 1705[26]
High-voltage probe 076-0392 The screen voltage adjustment on the Macintosh 12" RGB Display, and the high-voltage check on the Multiple Scan 1705. Apple specifies a 40 kV DC rating and 1,000 MΩ input impedance, warns that another probe could damage the 12" RGB, and says other probes give wrong readings on the 1705.[27][26]
Diagnostic overlay 076-0444 The geometry adjustments on the Macintosh 21" Color Display, with a compass and a voltmeter[28]
Mirror and ruler None given Adjustments made from behind a compact Mac while watching the screen in the mirror; measuring the raster size[3][23]
Modified monitor cable None given The AppleColor RGB Monitor colour adjustments: a monitor cable with pins 2, 5 and 9 cut or removed, so that the computer's RGB signals do not interfere with the internal colour settings[24]
Degaussing coil None given Colour blotches at the edges of the raster on the Multiple Scan 17; Apple's Network Server guide notes that a coil can be bought from most large electronic parts shops[29][30]

The CRT discharge tool is covered above. Apple's 1990 materials list for discharging the AppleColor RGB Monitor adds needle-nose pliers, an alligator lead, safety goggles and an ungrounded foam pad to the 076-0381 tool.[24]

Light meters

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Apple's display and compact Mac Service Sources give their luminance targets for three light meters, the R77, the L-248 and the 246, and the scale reading differs between them. The R77, Apple part 076-0310, was the newest. It reads 10 to 1,000 footcandles on three scales; for a screen Apple says to take off the 10X multiplier plate, set the switch to the bottom (10–50) scale and hold the lens against the middle of the screen. Apple warns that a dropped meter can lose its accuracy for good, and gives the four-digit date stamp (0398 for March 1998) as the way to check a meter's age. For the 12" Monochrome Display's sub-contrast setting of 33 foot-lamberts (±3), the guide gives the reading on each meter: 25 on the R77's bottom scale, the middle of the L-248's 10 scale, and 25 on the 246's red scale.[31] Apple's procedures for the AppleColor RGB Monitor call the L-248 the "Apple-supplied light meter (Sekonic MultiLumi, L248)".[24] For the Multiple Scan 1705, Apple prefers a colour analyser or photometer, accepts a 246 or an L-248 when neither is available, and says not to use any other light meter.[26]

Test patterns

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The later Service Sources take their test patterns from the Display Service Utility (DSU) in the Diagnostics Utilities folder of the Service Source Companion CD. For the Multiple Scan 1705 the patterns are under "Pattern Selections: Multiple Scan 720/1705".[26] The compact Mac and monitor procedures use its All-White Screen and Focus patterns.[31][25] For the AppleColor RGB Monitor the test patterns come from Apple's IIGS diagnostic disks, run on an Apple IIGS.[24]

Static protection

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Apple's service guides tell technicians to work on a grounded conductive mat and wear a grounding wriststrap when handling boards, chips and SIMMs. Apple's list of materials for an ESD-safe workstation is a conductive workbench mat with a ground cord, a wriststrap with a built-in 1 MΩ resistor and its ground cord, an equipment ground cord with alligator clips, and a ground/polarity tester for checking the outlet.[1] The same guides set the limits: do not be grounded when working on plugged-in equipment, when discharging a CRT, or when working on an unplugged CRT that has not been discharged. The 1987 procedures say the straps and mats contain a one-megohm resistor and are meant only for "dead" equipment.[1][2] Apple named no product of its own for the strap or mat in these documents; see Recommended Tools for the resistor requirement in the current ESD standard.

Diagnostic software

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MacTest

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MacTest was Apple's service diagnostic diskette for the 128K, 512K and Plus. It is a pass/fail test that reports module failures of the logic board, keyboard, keypad and disk drives. Apple's instructions:[2]

  • Make a backup copy of the MacTest diskette first, with one of the two copy programs on it, because a defective machine can damage the diskette. Write-protect the original.
  • Fit the loopbacks for a complete test: two DB-9 serial port plugs on the Macintosh 128K and 512K; on the Plus, a DIN-8 to DIN-8 cable between the serial ports and the SCSI loopback test card.
  • Have a blank formatted 400K diskette ready for the external drive test.
  • Always use the most recent revision of MacTest.

If the diskette will not boot, check the power and internal cables, then work through the troubleshooting tables, swapping modules and retrying the boot after each one.[2] The 1990 guide's troubleshooting flowcharts call for MacTest in the same way.[1] Startup error codes are on Sad Mac Error Codes.

MacTest Pro

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MacTest Pro was Apple's later service diagnostic. Apple describes it as repair diagnostic software for logic boards, video cards, monitors, floppy drives, hard drives and CD-ROM drives, which also detects corrupted software and multiple System Folders on a volume. It was a subscription product for Apple service providers, updated with each new CPU, with test modules the technician could customise.[32][33] In February 1996 the 68K release was MacTest Pro 7.0 on two disks, with MTP Emergency boot disks in an 800K version (System 6.0.8) and a 1.4 MB version, and a MacTest Pro CD. The 1.4 MB emergency disks carry System 7.5 and the enablers for the machines they test.[34]

Apple Personal Diagnostics

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Apple Personal Diagnostics (order number M2800LL/B) was the end-user product. It tests the logic board, RAM, hard and floppy drives and monitors, checks for damaged System, Finder and Enabler files, repairs minor disk directory damage and runs benchmarks. It came on one 800K application disk with two emergency startup disks, and needs a Macintosh Plus or later with 2 MB of RAM and System 6.0.7 or later (System 7 for the automatic background tests).[35] Version 1.0 did not support Power Macintoshes. The last version, 1.1.3, covers over 140 models from the Plus to the Power Macintosh 9500/132, except the 7200, 7500 and 8500.[36] Apple's service department recommended MacTest Pro over it for technicians, because Personal Diagnostics has no CPU-specific tests and does not test modems, CD-ROM drives or NuBus cards.[32]

TechStep and the serial test console

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Apple's hand-held TechStep tester ran ROM-based tests through a machine's external ports. Its manual is hosted as Apple TechStep User Guide, and the ROM test interface it used is described on Diagnostic Serial Console.

Other diagnostic media

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Some products had diagnostics of their own. The eMate 300's optional service diagnostics came on a PC card, Apple part 077-0153, and isolate a fault to a replaceable module: the logic board, the RAM and ROM expansion cards, the display, the keyboard or the battery.[37] On the Apple II side, the Graphics Tablet's pen alignment uses the Apple II Products Diagnostic Diskette (077-0100) with a pen alignment block, a nylon coil adjustment tool, a sheet of 1/8-inch plexiglass and an anti-static cloth.[38]

Disk utilities

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The Disk Tools disk that came with System 7.0 and 7.0.1 holds Disk First Aid, which detects and repairs problems on a hard disk, and Apple HD SC Setup, which initialises Apple hard disks and updates their drivers. Apple's advice was not to use HD SC Setup on a disk formatted with third-party software.[39] Later versions of both, and Drive Setup, are on the archived Apple server described on Apple Macintosh system software.

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References

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  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 Apple Computer, Apple Service Guide for Macintosh Computers, 1990. Hosted as File:APPLE MACINTOSH SERVICE GUIDE VOL1 1990.pdf; see Apple Macintosh Service Guide Volume 1 1990. Safety: CRT discharge, p. 3 (PDF p. 8); ESD prevention rules and ESD-safe workstation, pp. 5-6 (PDF pp. 10-11). Tab 1, Macintosh Plus memory upgrade, p. 15 (PDF p. 25). Tab 4, Macintosh II FDHD SuperDrive upgrade, p. 15 (PDF p. 79). Tab 6, Special Tools Index, p. 31 (PDF p. 125).
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Apple Computer, Apple Technical Procedures: Macintosh and Macintosh Plus, sections revised February 1987. Hosted as File:Apple Technical Procedures Macintosh and Macintosh Plus 1987.pdf; see Apple Technical Procedures: Macintosh and Macintosh Plus. Safety rules on grounding straps and mats (PDF p. 6); ESD prevention, Take-Apart 2.1-2.3 (PDF pp. 19-21); Cover, materials required and procedure (PDF p. 22); MacTest, Diagnostics 3.1 onwards (PDF pp. 36-45); case screw 435-5002 in the parts list (PDF p. 94).
  3. ↑ 3.0 3.1 3.2 3.3 3.4 Apple Computer, Apple Technical Procedures: Macintosh and Macintosh Plus, sections revised February 1987, "Materials Required" lists: Take-Apart, Cover (PDF p. 22), Power/Sweep Board (PDF p. 26), Logic Board (PDF p. 30), CRT (PDF p. 32), Internal Disk Drive (PDF p. 33) and Keyboard (PDF p. 34); Adjustments, Power/Sweep Voltage Adjustment (PDF pp. 65–66), Yoke Adjustments (PDF p. 68) and Video Adjustments (PDF p. 69). See Apple Technical Procedures: Macintosh and Macintosh Plus.
  4. ↑ iFixit Answers, "Tool kit for Macintosh SE", 14 April 2017 (retrieved 2026-10-04). Community answer: an extra-long Torx T15 for the two screws in the handle well; comments from a former Apple-trained technician on the Apple tool kit and spreader.
  5. ↑ 5.0 5.1 5.2 Apple Computer, Tech Info Library article 17471, "PowerBook: Sizes and Suppliers for Torx Drivers (1/97)", savagetaylor.com mirror (retrieved 2026-10-04).
  6. ↑ Apple Computer, PowerBook 500 Series Service Source, Basics, PowerBook Screw Matrix, p. 7 (PDF p. 9). Hosted as File:PowerBook 500 Series Service Source.pdf.
  7. ↑ Apple Computer, PowerBook 190 and 5300 Series Service Source, Take Apart, Before You Begin, Tools (PDF p. 74). Hosted as File:PowerBook 190 and 5300 Series Service Source.pdf.
  8. ↑ 8.0 8.1 Apple Computer, Macintosh Plus Service Source, Take Apart, Cover. Hosted as File:Macintosh_Plus.pdf; see Macintosh Plus Service Source.
  9. ↑ 9.0 9.1 9.2 9.3 Apple Computer, Macintosh Color Classic Service Source: Take Apart, Rear Housing, p. 6 (PDF p. 43); Adjustments, Geometry, pp. 2–3 (PDF pp. 100–101); Adjustments, Yoke, p. 32 (PDF p. 130). Hosted as File:Color classic.pdf; see Macintosh Color Classic Service Source.
  10. ↑ Apple Computer, Macintosh LC 580/Performa 580CD Service Source, Take Apart, Rear Housing, p. 15 (PDF p. 62). Hosted as File:Lc_580.performa_580cd.pdf.
  11. ↑ Apple Computer, Macintosh (128K/512K) Service Source, Take Apart, Cover, step 3. Hosted as File:Macintosh 128k.512k.pdf; see Macintosh 128K/512K Service Source.
  12. ↑ 12.0 12.1 JagWerks Media, "Classic Mac Repair Resources", section I.2 "Take apart SE/30" and I.4 "Discharge Tool" (retrieved 2026-10-04). Community page: long Torx T-15 screwdriver, pull-apart tool alternatives, Apple CRT discharge tools 076-0381 and 076-0243.
  13. ↑ Apple Computer, PowerBook 140, 145, 145B and 170 Service Source, Take Apart, Daughterboard, pp. 39–40 (PDF pp. 96–97). Hosted as File:PowerBook 140, 145, 145B and 170 Service Source.pdf; see PowerBook 140, 145, 145B and 170 Service Source.
  14. ↑ Apple Computer, PowerBook 160, 165 and 180 Service Source, Take Apart, Daughterboard, pp. 29–30 (PDF pp. 83–84). Hosted as File:PowerBook 160, 165 and 180 Service Source.pdf.
  15. ↑ Apple Computer, PowerBook 165c and 180c Service Source, Take Apart, Cousin Card, p. 29 (PDF p. 84). Hosted as File:PowerBook 165c and 180c Service Source.pdf.
  16. ↑ Apple Computer, PowerBook Duo 200 Series Service Source: Troubleshooting, Symptom Charts/Power, p. 11 (PDF p. 39); Take Apart, Keyboard, p. 2 (PDF p. 76); Additional Procedures, Align Battery Contacts, p. 16 (PDF p. 256). Hosted as File:PowerBook Duo 200 Series Service Source.pdf.
  17. ↑ Apple Computer, PowerBook Duo 2300c Service Source, Basics, Tools Required, p. 7 (PDF p. 9). Hosted as File:PowerBook Duo 2300c Service Source.pdf; see PowerBook Duo 2300c Service Source.
  18. ↑ Apple Computer, PowerBook Duo Dock Service Source, Take Apart, Release Mechanism, p. 4 (PDF p. 59) and Logic Board, p. 18 (PDF p. 73). Hosted as File:PowerBook Duo Dock Service Source.pdf; see PowerBook Duo Dock Service Source.
  19. ↑ Apple Computer, iBook, iBook (FireWire) Service Source, updated 5 December 2002, Take Apart, Tools, p. 1 (PDF p. 3). Hosted as File:IBook and iBook FireWire Service Source.pdf.
  20. ↑ Apple Computer, Power Mac G4 (Mirrored Drive Doors) Service Source, 2002, Take Apart, General Information, p. 1 (PDF p. 3). Hosted as File:Power Mac G4 Mirrored Drive Doors Service Source (2002).pdf; see Power Mac G4 (Mirrored Drive Doors) Service Source.
  21. ↑ Apple Computer, LaserWriter Pro 810 Service Source, November 1993, Take Apart (PDF p. 25). Hosted as File:LaserWriter Pro 810 Service Source.pdf; see Apple LaserWriter Pro 810.
  22. ↑ Apple, "iPhone 15 Pro Tools", published 6 July 2026 (retrieved 2026-10-12). Lists "922-5065 Nylon probe (black stick)".
  23. ↑ 23.0 23.1 Apple Computer, Macintosh SE Service Source, Adjustments: Yoke, p. 2 (PDF p. 114); Video, pp. 8–11 (PDF pp. 120–123). Hosted as File:Macintosh SE.pdf.
  24. ↑ 24.0 24.1 24.2 24.3 24.4 Apple Computer, Apple Technical Procedures: AppleColor RGB Monitor: Take-Apart 2.5, CRT discharge, rev. April 1990 (PDF p. 13); Adjustments, Pre-Adjustment Set-Up Procedure and Color Adjustments, rev. December 1987 (PDF pp. 38 and 45). Hosted as File:AppleColor RGB Monitor Technical Procedures.pdf; see Apple Color RGB Monitor.
  25. ↑ 25.0 25.1 Apple Computer, Macintosh Classic II/Performa 200 Service Source, Adjustments, Video, pp. 10–17 (PDF pp. 99–106). Hosted as File:Classic ii.performa 200.pdf.
  26. ↑ 26.0 26.1 26.2 26.3 Apple Computer, Apple Multiple Scan 1705 Display Service Source: Basics, Special Tools, p. 5 (PDF p. 7); Troubleshooting, Checking High Voltage, p. 14 (PDF p. 32). Hosted as File:Multiple scan 1705 display.pdf; see Apple Multiple Scan 1705 Display.
  27. ↑ Apple Computer, Macintosh 12" RGB Display Service Source, Adjustments, Screen Voltage, p. 4 (PDF p. 70). Hosted as File:12 rgb display.pdf; see Macintosh 12 RGB Display Service Source.
  28. ↑ Apple Computer, Macintosh 21" Color Display Service Source, Adjustments, Geometry Setup, p. 5 (PDF p. 121). Hosted as File:21 color display.pdf; see Macintosh 21 Color Display Service Source.
  29. ↑ Apple Computer, Apple Multiple Scan 17 Display Service Source, Troubleshooting, Symptom Charts/Raster, p. 12 (PDF p. 24). Hosted as File:Multiple scan 17 display.pdf; see Apple Multiple Scan 17 Display.
  30. ↑ Apple Computer, Apple Service Guide Volume V (1997), Network Server 500 and 700 chapter, symptom chart (PDF p. 34). Hosted as File:Apple Service Guide Volume V (1997) Network Server 500 and 700 chapter.pdf; see Apple Network Server 500.
  31. ↑ 31.0 31.1 Apple Computer, Macintosh 12" Monochrome Display Service Source, Adjustments: Video, p. 15 (PDF p. 52); Light Meter Setup, pp. 17–22 (PDF pp. 54–59). Hosted as File:12 monochrome display.pdf; see Apple 12" Monochrome Display.
  32. ↑ 32.0 32.1 Apple Computer, Tech Info Library article 14415, "Apple Personal Diagnostics and MacTest Pro Compared (8/94)", created 11 January 1994, savagetaylor.com mirror (retrieved 2026-10-04).
  33. ↑ Apple Computer, Tech Info Library article 13165, "MacTest Pro: Description (3/94)", savagetaylor.com mirror (retrieved 2026-10-04).
  34. ↑ Apple Computer, Tech Info Library, "MacTest Pro: 68k Macintosh Computers Version Info", effective 21 February 1996, savagetaylor.com mirror (retrieved 2026-10-04).
  35. ↑ Apple Computer, Tech Info Library article 14376, "Apple Personal Diagnostics: Description and Specs (2/95)", savagetaylor.com mirror (retrieved 2026-10-04).
  36. ↑ Apple Computer, Tech Info Library article 18396, "Apple Personal Diagnostics: Which Models Supported", savagetaylor.com mirror (retrieved 2026-10-04).
  37. ↑ Apple Computer, eMate 300 service manual, Troubleshooting, eMate Service Diagnostics, p. 14 (PDF p. 41). Hosted as File:EMateServiceManual.pdf; see Apple eMate 300.
  38. ↑ Apple Computer, Apple Technical Procedures: Graphics Tablet, Troubleshooting, Pen Alignment, rev. August 1984 (PDF p. 17). Hosted as File:Apple Graphics Tablet Technical Procedures.pdf; see Apple Graphics Tablet.
  39. ↑ Apple Computer, Tech Info Library article 14033, "System 7.0 or 7.0.1: Installation Requirements", savagetaylor.com mirror (retrieved 2026-10-04).


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