Apple Two-Page Monochrome Monitor
| Apple Two-Page Monochrome Monitor | |
|---|---|
 |
|
| Two-Page Monochrome Monitor (All About Apple museum, Wikimedia Commons, CC BY-SA 3.0) | |
| Manufacturer | Apple Computer, Inc. |
| Type | 21-inch monochrome (greyscale) CRT display |
| Release date | March 1989 |
| Discontinued | December 1992 |
| Price | US$2,149 |
| Interface | Analogue video (RS-343) |
| Dimensions | 399 mm high (plus 81 mm stand) × 495 mm wide × 442 mm deep |
| Weight | 25 kg (55 lb) |
| Model | M0402 (Rev. A); Rev. B |
| Power | 90-270 V AC, 47-63 Hz; 95 W maximum |
| Resolution | 1152 × 870, 77 dpi |
The Apple Two-Page Monochrome Monitor (also called the Macintosh Two-Page Monochrome Display) is a 21-inch greyscale monitor that shows two letter-size pages side by side at 1152 × 870. Apple introduced it in March 1989 and discontinued it in December 1992.[1] Low End Mac dates the launch to 7 March 1989, with the Macintosh IIcx and the Macintosh Two-Page Monochrome Video Card, at US$2,149.[2]
Specifications
[edit | edit source]| Item | Specification |
|---|---|
| Picture tube | 21 in diagonal, 20 in viewable; EIA P4 (white) phosphor; flat, square, high-contrast antiglare surface |
| Resolution | 1152 × 870, 77 dpi; up to 16 greys with 512K of video RAM |
| Scan rates | Vertical 75 Hz; horizontal 68.7 kHz; dot clock 100 MHz |
| Active display area | 381 × 287 mm (15 × 11.3 in) |
| Input | Analogue video to RS-343 |
| Controls | Power switch at the rear; brightness and contrast on the right side |
| Power supply | Universal, 90-270 V AC self-configuring, 47-63 Hz; 95 W maximum |
| Size and weight | 399 mm high plus 81 mm for the stand, 495 mm wide, 442 mm deep; 25 kg (55 lb) |
| Operating environment | 10-35 °C; 90 % humidity maximum, non-condensing; up to 3,048 m |
Low End Mac gives the weight as 60 lb (27 kg); the figures above are Apple's.[2][3]
Hardware
[edit | edit source]The display has a video board (661-0452), a deflection board (661-0451) and a power supply (661-0453), with an on/off switch and filter assembly (937-0040) and a contrast/brightness assembly. The CRT assembly is 076-0320 and the tilt-and-swivel stand 815-0558.[1] A bleeder resistor sits on the floor of the chassis; Apple's take-apart describes both a cigar-shaped and a box-shaped version.[3]
The fuse is on the power supply board. Apple's Service Source notes that some displays with serial numbers between 43661GXW and 44718HQX were fitted with a 1.6 A fuse, which is the wrong value; the correct fuse is 2.5 A. The service guide parts list gives 2.5 A, 250 V (941-0016).[3][1]
The parts list names two video cables, DB15 to DB25 (590-0615) and DB25 to DB25 (590-0574).[1]
Known issues
[edit | edit source]- Apple's charts cover no raster, geometry, synchronisation, video, the stand and a jitter fault that is not the display's: a wavy or jittery picture at 1152 × 870 on a Power Macintosh 9600 with an Apple/IMS video card with a serial number below Fx705xxx, which Apple fixed by replacing the card (661-1409).[3]
- A stand that will not swivel or tilt usually has its "Front" marks misaligned or its snap-lock assembly or plastic plug missing.[3]
See Apple Two-Page Monochrome Monitor Troubleshooting Guide and Apple Two-Page Monochrome Monitor General Maintenance, which has Apple's geometry sizes and the 31 foot-lambert video setting. Read CRT Discharge Procedure before opening the display.
Documentation
[edit | edit source]- Apple Two-Page Mono Service Source: Apple's 98-page Service Source.
- Apple's 1996 service guide Macintosh Displays and Video Cards has a chapter on the display with a parts list (File:Apple Macintosh Displays and Video Cards Service Guide (September 1996).pdf, pp. 307-322).[1]
Related pages
[edit | edit source]- Apple Two-Page Monochrome Monitor General Maintenance
- Apple Two-Page Monochrome Monitor Troubleshooting Guide
- Apple Portrait Display
- CRT Discharge Procedure
References
[edit | edit source]- ↑ 1.0 1.1 1.2 1.3 1.4 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: M0402 Apple Two-Page Monochrome Display (Rev A), and a Rev B, p. 12 (PDF p. 30); Table 2, dates: Macintosh Two-Page Monochrome, March 1989 to December 1992, p. 13 (PDF p. 31); Apple Two-Page Monochrome Monitor chapter pp. 307-322 (PDF pp. 325-340), parts list p. 310 (PDF p. 328).
- ↑ 2.0 2.1 Low End Mac, "Macintosh Two-Page Monochrome Display" (retrieved 2026-10-02). Introduced 7 March 1989 at US$2,149 with the Mac IIcx and the Macintosh Two-Page Monochrome Video Card; discontinued 1 December 1992; part numbers M0402 (Rev A) and M1025 (Rev B); weight given as 60 lb (27 kg). The page repeats the Portrait Display's active area by mistake and gives the connector both as 13W3 and DA-15. Community specification list.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 Apple Computer, Apple Two-Page Monochrome Monitor (Service Source), 1995, hosted as File:Twopage monochrome monitor.pdf (see Apple Two-Page Mono Service Source). PDF page numbers: Monitor Distortion pp. 3-9; Specifications pp. 11-15; Symptom Charts pp. 18-24; Take Apart pp. 26-63 (deflection board and bleeder resistor pp. 36-41, power supply pp. 42-44, fuse pp. 45-46); Adjustments pp. 65-96; Exploded View p. 98.