Apple Monochrome Monitor
| Apple Monochrome Monitor | |
|---|---|
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| The Apple Monochrome Monitor on the cover of its 1986 owner's guide | |
| Manufacturer | Apple Computer |
| Type | 12-inch monochrome composite video monitor |
| Interface | Composite video, RCA phono jack |
| Compatible | Apple IIGS, Apple IIc, Apple IIc Plus |
| Model | A2M6016 |
| Power | 108-132 V AC, 50-60 Hz; 45 W maximum |
The Apple Monochrome Monitor (A2M6016) is a 12-inch white-phosphor composite monitor that Apple sold for the Apple IIGS, Apple IIc and Apple IIc Plus. Its platinum case matches the IIGS. Its owner's guide carries a 1986 copyright.[1][2] Apple's 1988 data sheet sold it alongside the Apple Monochrome Monitor IIe (A2M6017), a green-screen model for the Apple II, II Plus and IIe that is the platinum version of the Apple Monitor II.[2] The two are different designs: the IIe model has the Monitor II's tilting screen and a green P31 tube, the Apple Monochrome Monitor a white P4 tube in a different case.
The monitor contains a CRT. Read CRT Discharge Procedure before opening it.
Specifications
[edit | edit source]| Item | Value |
|---|---|
| Picture tube | 12 in (30.5 cm) diagonal, 90° deflection, high contrast, antiglare; white phosphor, EIA type P4 |
| Active display area | 215 mm × 160 mm |
| Scanning | EIA standard, 525 lines, 30 frames and 60 fields per second, overscan; 15.7 kHz horizontal, 59.9 Hz vertical |
| Input | Composite video, 1.0 V ±0.1 V p-p, negative sync; RCA-style phono jack, 75 Ω |
| Video bandwidth | Less than 3 dB down at 12 MHz |
| Display | 560 × 192 dots with the IIc and IIc Plus; 640 × 200 with the IIGS; up to 80 columns by 25 lines |
| Controls | Side: power, contrast. Rear: brightness, vertical hold, vertical amplitude |
| Mains | 108-132 V AC, 50-60 Hz |
| Power | Typically less than 20 W, 45 W maximum |
| Operating temperature | 0-50 °C |
| Size | 25.5 cm high, 31.0 cm wide, 37.5 cm deep |
| Weight | 18 lb (8.16 kg) |
Apple's Tech Info Library repeats these figures but gives the bandwidth of both monitors as 10 MHz and the operating range of this one as "0 to 5 degrees C", a misprint for 0 to 50 °C.[3] Apple's service manual labels the rear controls H-HOLD, HEIGHT and V-HOLD.[4] The 220/240 V version has a detachable mains lead plugged into a power inlet on the left of the back panel.[1]
A Height-Adjustment bar under the front of the case can be turned round and refitted to raise the front of the monitor by one inch.[1] For the IIc and IIc Plus, Apple also sold the Apple Monitor Stand (A2M4029).[2]
Hardware
[edit | edit source]Inside are the CRT on its mounting plate, a main logic board assembly that slides into channels on the CRT mounting plate and carries the flyback transformer, a separate mains transformer screwed to the same chassis, the CRT socket board on the tube neck, a switch case holding the power switch and contrast control, and an LED board behind the bezel.[5]
Apple's service parts were the CRT (076-0224), the fuse (740-0308), the main logic board (661-0346 for 110 V, 661-0362 for 220/240 V), the transformer (915-0009 for 110 V, 915-0010 for 220 V, 915-0011 for 240 V), the on/off switch (937-0018), the contrast control (905-0002), the LED assembly (930-0005) and the cases.[6] Apple does not print the fuse's rating.
Apple presets the yoke at the factory and tells technicians not to make tilt, ring or geometric adjustments. The only internal controls are sub-brightness, horizontal hold and focus.[7]
Known faults
[edit | edit source]Apple's symptom chart replaces the main logic board for most faults. A blown fuse that blows again points to the mains transformer. Two faults are self-inflicted: an image reversed left to right after service means yoke connector P4 is on backwards, and an upside-down image means P3 is.[8] See Apple Monochrome Monitor Troubleshooting Guide.
Apple's service documents give no schematic or component list for this monitor.
Documentation
[edit | edit source]Apple's Technical Procedures, the owner's guide and the 1988 data sheet are hosted and described on Apple Monochrome Monitor Documentation.
Related pages
[edit | edit source]- Apple Monochrome Monitor General Maintenance
- Apple Monochrome Monitor Troubleshooting Guide
- Apple Monochrome Monitor Documentation
- Apple Color RGB Monitor, the colour monitor in the same case for the IIGS
- Apple Monitor II, Apple Monitor IIc
- CRT Discharge Procedure
References
[edit | edit source]- ↑ 1.0 1.1 1.2 Apple Computer, Apple Monochrome Monitor Owner's Guide, 1986. Hosted here: File:Apple Monochrome Monitor Owner's Guide 1986.pdf.
- ↑ 2.0 2.1 2.2 2.3 Apple Computer, Apple II Monochrome Monitors data sheet, September 1988, A2F2221/A. Hosted here: File:Apple II Monochrome Monitors Data Sheet 1988.pdf.
- ↑ Apple Computer, Tech Info Library, Apple II Monochrome Monitors: Specifications (Discontinued), created 31 May 1991, revised 13 September 1993. archive.org copy.
- ↑ Apple Computer, Monochrome Monitor Technical Procedures, in Apple Service Technical Procedures: Apple II Family, Volume Two, 072-0229, November 1991 build, Basics, p. 1.2 (PDF p. 6). Hosted here: File:Apple Monochrome Monitor Technical Procedures.pdf.
- ↑ Monochrome Monitor Technical Procedures, Take-Apart, pp. 2.2-2.24 (PDF pp. 8-30).
- ↑ Monochrome Monitor Technical Procedures, Illustrated Parts List, pp. 5.3-5.7 (PDF pp. 47-51).
- ↑ Monochrome Monitor Technical Procedures, Adjustments, Introduction, p. 3.3 (PDF p. 33).
- ↑ Monochrome Monitor Technical Procedures, Troubleshooting, Symptom Chart, pp. 4.2-4.3 (PDF pp. 42-43).