Apple Macintosh Color Display
| Macintosh Color Display | |
|---|---|
 |
|
| Macintosh Color Display (M1212) | |
| Manufacturer | Apple Computer |
| Type | 14-inch Trinitron colour monitor |
| Interface | Analogue RGB, separate sync |
| Model | M1212 |
| Power | Universal 90-270 V AC, 47-63 Hz; 37 W normal, 55 W maximum |
The Macintosh Color Display (M1212) is a 14-inch colour monitor with a Sony Trinitron tube that Apple introduced in 1992 as the smallest of its Macintosh Color Display range.[1][2] It runs at a fixed 640 × 480.[3]
The display contains a CRT. Read CRT Discharge Procedure before opening it; Apple warns not to wear a grounding wrist strap until the CRT has been discharged.[4]
Specifications
[edit | edit source]| Item | Value |
|---|---|
| Picture tube | 14 in diagonal, 11.5 in viewable; Trinitron, 0.26 mm aperture-grille pitch |
| Resolution | 640 × 480, 70 dpi; active area 235 × 176 mm |
| Scan rates | 35.0 kHz horizontal, 66.7 Hz vertical |
| Input | Analogue RGB; separate sync, negative-going TTL |
| Mains | Universal, 90-270 V AC, 47-63 Hz |
| Power | 37 W normal, 55 W maximum |
| Fuse | Internal, on the main board; service part 922-0004 |
| Size | 330 mm high, 344 mm wide, 394 mm deep |
| Weight | 11.3 kg (24 lb 14 oz) with cables |
| Warm-up | 20 minutes to meet all specifications |
Hardware
[edit | edit source]Apple's exploded view lists the main deflection board in three versions: 661-0102 (with Energy Star), 661-1650 (without Energy Star) and 661-0169 (Rev. B). The CRT assembly is 661-1666, and the convergence controls are on the CRT video board. The take-apart chapter also covers the on/off switch assembly, the contrast, brightness and LED assembly, the base, the bezel, the power cable (590-0370) and the video cable (922-0035).[5] All adjustments use a short hex-head plastic tool; Apple warns against metal tools.[6]
A thin horizontal line about a third of the way up the picture is the support wire of the Trinitron aperture grille. Apple says it is common to all Trinitron displays smaller than 15 inches and cannot be adjusted out or removed by replacing modules.[7]
Known faults
[edit | edit source]Apple's symptom charts start with the surroundings and the computer: move the monitor away from other monitors, fluorescent lights and electrical equipment, check the computer's video with a known-good monitor, and adjust before replacing anything. Most remaining faults end at the main board, with the CRT for focus that stays bad in one area, a colour tint that cannot be removed, burnt phosphor and a black raster with a single line.[8] See Apple Macintosh Color Display Troubleshooting Guide.
Documentation
[edit | edit source]- Macintosh Color Display Service Source: Apple's 96-page Service Source, with specifications, symptom charts, take-apart, adjustments and the exploded view
- File:Macintosh Color Display M1212 Schematic.pdf: a low-resolution nine-page scan of an M1212 schematic
Related pages
[edit | edit source]- Apple Macintosh Color Display General Maintenance
- Apple Macintosh Color Display Troubleshooting Guide
- Apple Color Plus 14 Display, Apple's lower-cost 14-inch display
- CRT Discharge Procedure
References
[edit | edit source]- ↑ Apple Macintosh Color Display (M1212), CRT Database—link(accessed 2026-09-30)
- ↑ Apple displays, Wikipedia—link(accessed 2026-10-02) Used for the 1992 range of 14-, 16- and 20-inch Macintosh Color Displays.
- ↑ 3.0 3.1 Apple Computer, Macintosh Color Display (Service Source), 96 pp., Specifications, pp. 1-6 (PDF pp. 3-8). Hosted here: File:Macintosh color display.pdf (see Macintosh Color Display Service Source).
- ↑ Macintosh Color Display Service Source, Take Apart, Fuse, pp. 30-31 (PDF pp. 51-52).
- ↑ Macintosh Color Display Service Source, Take Apart contents and Exploded View, pp. 1-31 and p. 96 (PDF pp. 22-52, 96).
- ↑ Macintosh Color Display Service Source, Adjustments, Geometry, p. 2 (PDF p. 55).
- ↑ Macintosh Color Display Service Source, Troubleshooting, Symptom Charts/Miscellaneous, pp. 10-11 (PDF pp. 19-20).
- ↑ Macintosh Color Display Service Source, Troubleshooting, Symptom Charts, pp. 2-11 (PDF pp. 11-20).