Macintosh Color Display Service Source
The Macintosh Color Display Service Source is Apple's 96-page service manual for the 14-inch Macintosh Color Display (M1212), a Sony Trinitron monitor Apple introduced in 1992.[1] The PDF was produced from Apple's FrameMaker files on 13 November 1995. Page numbers below are the PDF's.
Specifications as printed
[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 9.3 × 6.9 in (235 × 176 mm) |
| Scan rates | Horizontal 35.0 kHz; vertical 66.7 Hz |
| Input | Analog RGB; separate sync, negative-going TTL |
| Power supply | Universal, 90-270 V AC, 47-63 Hz; 37 W normal, 55 W maximum |
| Fuse | Internal power-line fuse; Apple says a qualified service technician must replace it |
| Size and weight | 13 in (330 mm) H × 13.5 in (344 mm) W × 15.5 in (394 mm) D; 24 lb 14 oz (11.3 kg) with cables |
| Warm-up | 20 minutes to meet all specifications |
| Operating environment | 50-95 °F (printed as 10-40 °C), 95% humidity maximum, non-condensing |
Contents
[edit | edit source]- Specifications: Characteristics, Controls and Ports, Physical and Electrical, Operating Environment (pp. 3-8)
- Troubleshooting: symptom charts for No Raster, Geometry, Synchronization, Video and Miscellaneous (pp. 10-20)
- Take Apart: Rear Cover, Base Assembly, Video Cable, Main Board, On/Off Switch Assembly, Contrast/Brightness/LED Assembly, CRT Assembly, Bezel, Monitor Stand, Fuse (pp. 22-52)
- Adjustments: Geometry and Focus (pp. 54-61), Video (cutoff and white balance, pp. 62-73), Light Meter Setup (pp. 74-79), Convergence (pp. 80-82), Geometric Distortion (pp. 83-88), Yoke (pp. 89-94)
- Exploded View (p. 96)
What it settles
[edit | edit source]- For cutoff, warm the monitor for at least 10 minutes, display the Gray Bars pattern from Display Service Utility, set contrast to maximum and brightness to its centre detent, and set G2 so that the first bar is black and the second barely visible. Apple says to repeat the cutoff adjustment whenever the CRT assembly or main board is replaced (pp. 63-66).
- The sub-contrast control is set for 30 ± 3 foot-lamberts on an all-white screen, which Apple converts for its three light meters: 23 on the bottom scale of the R77, the middle of the 10 scale on the L-248, and 23 on the red scale of the 246 (pp. 71-72).
- A thin horizontal line about a third of the way up the picture is the aperture grille's support wire; Apple says it cannot be adjusted out or removed by replacing modules (p. 20).
- The fuse is on the main board and is prised out with a small screwdriver after discharging the CRT (pp. 51-52).
The exploded view gives part numbers: main deflection board 661-0102 (with Energy Star), 661-1650 (without Energy Star) and 661-0169 (Rev. B); CRT assembly 661-1666; fuse 922-0004; power cable 590-0370; video cable 922-0035 (p. 96).
What this manual does not contain
[edit | edit source]No schematic and no component values. The fuse has a part number but no current or voltage rating. There are no power-supply voltages or tolerances and no EHT figure.
Pages that link to this document
[edit | edit source]The related Service Source pages Apple AudioVision 14 Display Service Source, Apple Performa Display/ Plus Service Source, 17" ColorSync Displays Service Source and 20" ColorSync Displays Service Source link here as neighbouring volumes.
A CRT holds a dangerous charge on the anode after the mains is removed. Follow CRT Discharge Procedure before working inside one. Apple warns not to wear a grounding wrist strap until the CRT has been discharged (p. 51).
Download: Macintosh color display.pdf