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Apple Studio Display 17

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Apple Studio Display 17
Studio Display (17-inch CRT) in the original blue and white housing (Apple Service Source)
Manufacturer Apple Computer, Inc.
Type 17-inch colour CRT display (Mitsubishi Diamondtron, aperture grille)
Release date January 1999
Discontinued May 2001 (CRT models)
Interface 15-pin mini D-sub VGA connector with VGA-to-Macintosh adapter; Apple Display Connector on the 2000 model
Compatible Power Macintosh computers (except the PowerBook Duo 2300) with Mac OS 8.0 or later
Dimensions 427 × 411 × 447 mm (H × W × D)
Weight 20.8 kg (45.9 lb)
Model M6221LL/A (blue and white), M6221LL/B (graphite); M7770ZM/A (ADC)
Power 90-264 V AC, 47-63 Hz; 150 W maximum
Resolution 640 × 480 to 1600 × 1200

The Apple Studio Display 17 is Apple's 17-inch CRT monitor of 1999 to 2001, with a Mitsubishi Diamondtron tube (16.0-inch viewable image, 0.25 mm aperture-grille pitch), a translucent housing and a three-legged stand. The first version, order number M6221LL/A, was sold from January 1999 as the companion to the blue and white Power Macintosh G3.[1][2] A grey and white version, M6221LL/B, followed in August 1999 for the Power Mac G4, with the same circuitry.[2] In July 2000 Apple replaced it with a clear-cased 17-inch CRT using the Apple Display Connector (ADC), and it stopped selling CRT displays in May 2001.[3]

The name was used again in May 2001 for a 17-inch LCD Studio Display, which is a different product.[3]

Specifications

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Apple's specifications, M6221LL/A[1]
Item Specification
Picture tube 17 in Mitsubishi Diamondtron, 16.0 in viewable; 0.25 mm aperture grille pitch; high-contrast antireflective, antistatic coating
Resolutions 640 × 480 and 800 × 600 at up to 85 Hz; 832 × 624 at up to 75 Hz; 1024 × 768 at up to 85 Hz; 1152 × 870 and 1280 × 1024 at up to 75 Hz; 1600 × 1200 at up to 60 Hz
Scan rates Horizontal 30-85 kHz; vertical 48-160 Hz
Connector 15-pin mini D-sub VGA; VGA-to-Macintosh adapter supplied
Power 90-264 V AC, 47-63 Hz; 150 W maximum operating
Size and weight 427 mm high, 411 mm wide, 447 mm deep; 20.8 kg (45.9 lb)
Controls Power, brightness, contrast and on-screen display (degauss, size and centring, rotation, parallelogram, colour temperature)

The manufacturer's service manual for the chassis gives a weight of 22.5 kg net and different overall dimensions; the figures above are Apple's.[4][1]

Versions

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17-inch CRT Studio Displays
Version Order number Housing Video connection Source
Original (January 1999) M6221LL/A Translucent blue and white VGA cable, VGA-to-Macintosh adapter [1]
August 1999 M6221LL/B Translucent grey and white; rear housing 922-3937, intermediate bezel 922-3936, front bezel 922-3938 (the blue version's are 922-3649, 922-3647 and 922-3651) As above [2]
ADC (July 2000) M7770ZM/A Clear Apple Display Connector, carrying video, USB and power; 28 V DC ± 1.5 V input, 113 W maximum [5]

The ADC model has its own Service Source (2003), whose adjustments use Apple's "Cabernet" rework software and a colour analyser; it is a different chassis and the figures below apply to the 1999 VGA models.[6]

Hardware

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Apple serviced the 1999 display at module level. The main deflection board and the CRT/video board are exchanged together as one module; the other modules are the convergence/tilt board, the user controls board, the video cable and the CRT.[2] The chassis maker's manual shows that the main board carries the power supply as well as the deflection circuits: a KA3842B PWM controller (IC901) with a MOSFET switch, a TOP221Y (IC903) and a 5 A time-lag mains fuse, F901.[4]

Apple's diagnostic figures are 27 kV at the anode, 180 V on the B+ supply, 6.3 V heater and 65-85 V on each cathode; see Apple Studio Display 17 General Maintenance.[2]

Known faults

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  • Flyback and high-voltage faults are the failure owners report most. One graphite display arced and sparked; a new flyback worked for ten minutes before the picture collapsed, after which the power light gave three amber flashes and there was no high voltage at the neck board. The owner also found a shorted horizontal output transformer and replaced the damper diode and some high-voltage capacitors.[7] Two VCF forum members who repair CRTs caution that the flyback is blamed far more often than it fails; a horizontal output transistor or cracked solder joints round the flyback are more common causes.[8]
  • Thin vertical lines across the screen after the display has been cold or shaken: Apple explains that the fine wires of the Diamondtron aperture grille can stick together, and gives a procedure for freeing them by tapping the case.[2]
  • The tripod stand cracks if the display is lifted or pulled by its legs; Apple says to lift it by the hand grips under the sides.[2]

See Apple Studio Display 17 Troubleshooting Guide and Apple Studio Display 17 Capacitor Replacement Guide. Read CRT Discharge Procedure before opening the display.

Documentation

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References

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  1. ↑ 1.0 1.1 1.2 1.3 Apple Computer, Apple Studio Display data sheet (17-inch CRT), L03537A, January 1999, hosted as File:Apple Studio Display 17-inch CRT Data Sheet (January 1999).pdf (see Apple Studio Display 17 Documentation). 17-inch (16.0-inch viewable) Mitsubishi Diamondtron CRT; 0.25 mm aperture grille pitch; resolutions 640 × 480 at up to 85 Hz to 1600 × 1200 at up to 60 Hz; 30-85 kHz horizontal, 48-160 Hz vertical; 15-pin mini D-sub VGA connector; VGA-to-Macintosh adapter included; 90-264 V AC, 47-63 Hz, 150 W maximum operating; 16.8 × 16.2 × 17.6 in (42.7 × 41.1 × 44.7 cm), 45.9 lb (20.8 kg); TCO 95; order number M6221LL/A.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Apple Computer, Studio Display (17" CRT, 16" VIS) (Service Source), hosted as File:Studio display 17.pdf (see Studio Display (17" CRT, 16" viewable image size) Service Source). PDF page numbers: Overview and Features pp. 3-5; Repair Issues pp. 6-11 (translucent housing, tripod stand safety, VGA-to-Macintosh adapter, new housing colour and part numbers); US repair strategy pp. 12-14; First Checklist pp. 25-26; Symptom Charts pp. 27-35; Take Apart pp. 37-104 (safety guidelines pp. 39-41, tools p. 44, tripod stand pp. 52-56, rear housing pp. 57-59, EMI shield pp. 60-66, main deflection and CRT/video board module pp. 71-80); Adjustments pp. 107-126; Exploded View p. 128.
  3. ↑ 3.0 3.1 Wikipedia, "Apple Studio Display (1998–2004)" (retrieved 2026-10-02). 17-inch and 21-inch CRT Studio Displays introduced January 1999 with VGA connectors in blueberry and white; restyled in graphite and white in August 1999; in July 2000 the 21-inch was discontinued and the 17-inch replaced by a transparent ADC model; CRT displays discontinued May 2001; a 17-inch LCD Studio Display (M7649, 1280 × 1024) followed in May 2001 and was retired in June 2004. History only.
  4. ↑ 4.0 4.1 Service manual for the display chassis (internal designation DA796, parts list headed "Model: M6496", dated 25 October 1998; no maker's name in the document), hosted as File:Apple Studio Display 17-inch CRT Service Manual (DA796 chassis).pdf (see Apple Studio Display 17 Documentation). PDF page numbers: specifications p. 1 (17-inch Diamondtron, 90° deflection, 29.1 mm neck, 0.25 mm grille pitch; power less than 150 W, standby and suspend less than 15 W, off less than 5 W; active area 327 × 244 mm; 1600 × 1200 at 60 Hz; 30-85 kHz, 48-160 Hz; AC 100-120/200-240 V auto select, 2.0/1.0 A maximum; net weight 22.5 kg with tilt/swivel); adjustments pp. 10-11; troubleshooting flowcharts pp. 13-20; printed circuit boards pp. 21-25; exploded view p. 26 (CRT M41KZV31X61 Mitsubishi; FBT 6174T13003C); replacement parts list pp. 27-50; schematic diagram ("DA796 [APPLE]", P/N 3854T17021A, 1998.10.28) p. 51.
  5. ↑ Apple Computer, Apple Studio Display data sheet (17-inch Natural Flat Diamondtron CRT, Apple Display Connector), L05473A, July 2000, hosted as File:Apple Studio Display 17-inch ADC CRT Data Sheet (July 2000).pdf. 16-inch viewable image; 0.25 mm aperture grille pitch; 640 × 480 at 153 Hz to 1600 × 1200 at 65 Hz; 80 kHz horizontal, 60-160 Hz vertical; line voltage 28 V DC ± 1.5 V; 113 W maximum operating, 35 W or less in energy-saver mode; two-port USB hub; 18.7 × 17.0 × 17.4 in (47.5 × 43.2 × 44.4 cm), 45.8 lb (20.7 kg); TCO 99; order number M7770ZM/A.
  6. ↑ Apple Computer, Studio Display (17" CRT, 16" VIS, ADC) (Service Source), 11 March 2003, hosted as File:Studio Display 17-inch CRT ADC Service Source (2003).pdf (see Apple Studio Display 17 Documentation). Take Apart: monitor stand (a customer-installable part), rear housing, CRT shroud, discharging the CRT and removing the anode cap, deflection board and mount assembly, video cable, CRT, front bezel; Adjustments: Mac-based Cabernet rework software with a CA100 colour analyser.
  7. ↑ TinkerDifferent forum thread "I want to save my graphite Studio Display 17. (Bad flyback probably, need help sourcing a new one)", December 2024 to July 2025. Trekintosh: the display started arcing and sparking; fitted a new flyback, which worked for about 10 minutes before the picture collapsed to three dots (it had been driven at 1600 × 1050 from an Xbox 360); afterwards only a green power LED with three amber flashes at regular intervals and no high voltage at the neck board; replaced the horizontal output transformer (shorted), the damper diode and some high-voltage capacitors. Midnightcoffee: same symptoms after reflowing all joints and greasing the anode cap and flyback. Community repair report.
  8. ↑ Vintage Computer Federation forum thread "Apple Studio Display CRT Woes", September-October 2026. pcuser451: a working 17-inch blueberry Studio Display; asks about flyback sources and reflowing. Hugo Holden: most CRT faults blamed on the flyback are something else, and a horizontal output transistor failure is far more probable; global reflowing is not proper diagnosis. VERAULT: has repaired many CRTs and seen many cracked solder joints on flybacks but very few failed flybacks; found no schematics for the Studio Display online. Community experience.