Apple 12" Monochrome Display
| Macintosh 12" Monochrome Display | |
|---|---|
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|
| Apple product photograph, Apple Facts, February 1993 | |
| Manufacturer | Apple Computer, Inc. |
| Type | 12-inch monochrome CRT monitor |
| Release date | December 1990 |
| Discontinued | October 1993 |
| Interface | Analogue video (RS-343), DB-15 video cable |
| Dimensions | 310 × 365 × 259 mm (H × W × D) |
| Weight | 7.3 kg (16 lb) |
| Model | M1050 |
| Power | 90-132 V and 190-270 V AC, 47-63 Hz, 30 W maximum |
| Resolution | 640 × 480, 76 dpi, up to 256 greys |
The Macintosh 12" Monochrome Display is a 12-inch grey-scale monitor that Apple sold from December 1990 to October 1993.[1] It was introduced with its colour companion, the 12" RGB Display, as a low-cost display for the Macintosh LC.[2] In February 1993 Apple described it as its most affordable display.[3] The model number on the tag at the back is M1050.[1]
Specifications
[edit | edit source]| Item | Value |
|---|---|
| Picture tube | 12 in diagonal; combined EIA P104 and P193 white ("page-white") phosphor; high-contrast antiglare surface, dark glass |
| Resolution | 640 × 480, 76 dpi; up to 256 greys |
| Scan rates | Vertical 66.75 Hz; horizontal 35.0 kHz; rise and fall time 16 ns maximum |
| Active display area | 8.35 × 6.26 in (212 × 159 mm) |
| Input | Analogue video, RS-343 |
| Controls | Power switch at the rear; brightness and contrast on the right side |
| Power supply | Universal, 90-132 and 190-270 V AC, 47-63 Hz, 30 W maximum |
| Size and weight | 12.2 in (310 mm) high, 14.4 in (365 mm) wide, 10.2 in (259 mm) deep; 16 lb (7.3 kg) |
| Operating environment | 10-40 °C; 95% humidity maximum, non-condensing; up to 10,000 ft (3,048 m) |
Apple's online specification page lists an 11.5-inch viewable image and a 66.7 Hz refresh rate.[5]
Compatibility
[edit | edit source]Apple's February 1993 product guide lists built-in support for the display on the Macintosh LC II, LC III, IIvi and IIvx and on the external video port of the PowerBook 160 and 165c, and says the Centris 610 and 650 and the Quadra 800 and 950 support all Apple displays.[3] It runs at 640 × 480 with a 35.0 kHz horizontal rate and a vertical rate of about 66.7 Hz.[4][5]
Hardware
[edit | edit source]The display has one main board (661-0615), a small video board on the neck of the CRT, and a contrast/brightness assembly that holds the two knobs. Apple has the contrast/brightness board wires (connector BV4) and the LED leads desoldered when those parts are replaced.[6]
| Part | Apple number |
|---|---|
| Main board | 661-0615 |
| CRT assembly | 076-0382 |
| Fuse | 941-5225 |
| Brightness pot / contrast pot | 109-1022 / 109-1020 |
| Bezel / rear cover | 658-8351 / 658-8352 |
| CPU-to-monitor cable | 590-4510 |
| Power cable | 590-0370 |
Apple's documents give the fuse only by part number, with no rating.[7]
Maintenance and repair
[edit | edit source]- Apple 12" Monochrome Display General Maintenance: cleaning, geometry, focus and Apple's video adjustment (33 foot-lamberts).
- Apple 12" Monochrome Display Troubleshooting Guide: Apple's symptom charts and the main board take-apart.
Apple's service manual has no schematic and no component values, and no community capacitor list for this display has been found, so there is no capacitor guide. The CRT keeps a charge after switch-off; follow the CRT Discharge Procedure before working inside.
Documentation
[edit | edit source]- Macintosh 12 Monochrome Service Source: Apple's 61-page Service Source.
- Apple Macintosh Displays and Video Cards Service Guide (1996), chapter 18: exploded view, main board connector drawing (Figure 75), parts list and adjustment fold-out.[1]
Gallery
[edit | edit source]-
Exploded view with part numbers (Apple Service Source) -
Focus and geometry controls at the rear (Apple Service Source)
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Related pages
[edit | edit source]References
[edit | edit source]- ↑ 1.0 1.1 1.2 Apple Computer, Macintosh Displays and Video Cards service guide, September 1996, hosted as File:Apple Macintosh Displays and Video Cards Service Guide (September 1996).pdf. Table 1, model numbers, p. 12 (PDF p. 30); Table 2, dates, p. 13 (PDF p. 31); chapter 18, Macintosh 12" Monochrome Display, pp. 279-287 (PDF pp. 297-305).
- ↑ Apple displays, Wikipedia—link(accessed 2026-10-02) History only: the two 12-inch displays introduced in 1990 for the Macintosh LC.
- ↑ 3.0 3.1 Apple Computer, Apple Facts 2.93, February 1993: "Key Features of the Apple Display Family", p. 73; display support in the LC II, LC III, IIvi, IIvx, Centris, Quadra and PowerBook 160 and 165c entries. archive.org item apple-facts-9302-2.93-february-1993.
- ↑ 4.0 4.1 Apple Computer, Macintosh 12" Monochrome Display (Service Source), hosted as File:12 monochrome display.pdf. Specifications, pp. 1-5 (PDF pp. 3-7).
- ↑ 5.0 5.1 Macintosh 12-inch Monochrome Display: Technical Specifications, Apple—link(accessed 2026-10-02)
- ↑ Macintosh 12" Monochrome Display Service Source, Take Apart, pp. 1-20 (PDF pp. 17-36).
- ↑ 7.0 7.1 Macintosh 12" Monochrome Display Service Source, Exploded View (PDF p. 61).