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Apple Multiple Scan 14 Service Source

From RetroTechCollection

The Apple Multiple Scan 14 Display volume of Apple's Service Source is a 34-page service manual. The PDF was distilled on 21 December 1995.

Specifications as printed

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Item Value
Picture tube 14 in diagonal spherical shadow-mask CRT, 12.4 in viewable; trio gun; aluminised P22-derivative phosphor; 0.28 mm dot pitch; polished surface treatment
Screen resolution 640 x 480 at 60 Hz (VGA); 640 x 480 at 67.67 Hz (Macintosh); 800 x 600 at 60 Hz (SVGA); 832 x 624 at 75 Hz (Macintosh)
Scan rates vertical refresh 60-72 Hz; horizontal 31.5-48 kHz
Connector 15-pin miniature D-type
Mains 90-132 VAC only, 47-63 Hz
Power 80 W maximum
Size 14.7 in (378 mm) H x 14.2 in W
I/O ports headphone/speaker: one input and one pass-through output

Apple prints a 90-132 VAC supply for this display and no 220-240 V figure, so this volume documents the domestic unit only.

The Specifications chapter also prints full monitor timings (back porch, sync width, front porch, dot clock and line/frame periods) for 640 x 480 at 60 and 66.67 Hz and for 800 x 600 at 60 and 72 Hz. Those tables are the citable source for this display's timing, and they are reproduced nowhere else on this wiki.

Contents

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  • Basics - Overview, Repair Issues: 832x624 Resolution (pdf pp. 3-9)
  • Specifications - Characteristics, Controls and Ports, Physical and Electrical, Environmental (pdf pp. 12-20)
  • Troubleshooting - General, symptom charts for No Raster, Geometry and Video (pdf pp. 22-26)
  • Adjustments - Brightness and Contrast, Geometry (pdf pp. 28-34)

What this manual does not contain

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No Take Apart chapter and no Exploded View. Apple's strategy for this display was exchange, so there is no disassembly order at all, no parts list, no schematic, no component values and no fuse information. The Adjustments chapter covers only the user-accessible controls behind the front door.

Pages that cite this document

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A CRT display holds a lethal charge on the anode after the mains is removed. Follow CRT Discharge Procedure before working inside one.

Download: Multiple scan 14 display.pdf