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The '''Apple Multiple Scan 15 Display''' volume of Apple's ''Service Source'' is a '''32-page''' service manual. The PDF was distilled on 9 November 1995.
The '''Apple Multiple Scan 15 Display''' volume of Apple's ''Service Source'' is a 32-page service manual for the Multiple Scan 15, a 15-inch flat square colour display. The PDF was distilled on 9 November 1995.<ref name="ss">Apple Computer, ''Apple Multiple Scan 15 Display'' (''Service Source''), 32 pp., 1995. Hosted as [[:File:Multiple scan 15 display.pdf]].</ref>


== Specifications as printed ==
== Specifications as printed ==
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{| class="wikitable styled-table"
{| class="wikitable styled-table"
|-
|+'''Apple Multiple Scan 15 specifications'''<ref name="spec">''Apple Multiple Scan 15 Display'' Service Source, Specifications: Characteristics pp. 1-3, Controls and Ports p. 4, Physical and Electrical p. 5, Environmental p. 6 (PDF pp. 6-11).</ref>
! Item !! Value
! Item !! Value
|-
|-
| Picture tube || 15 in diagonal flat square shadow mask, '''13.3 in viewable'''; '''0.28 mm dot pitch'''
| Picture tube || 15 in diagonal flat square shadow mask, 13.3 in viewable; 0.28 mm dot pitch; polished surface
|-
|-
| Screen resolution || 640 x 480, 800 x 600, 832 x 624; 1024 x 768 only on PCs through a Mac/PC adapter
| Screen resolution || 640 × 480, 800 × 600, 832 × 624; 1024 × 768 only on PCs through a Mac/PC adapter
|-
|-
| Scan rates || vertical refresh '''60-75 Hz'''; horizontal '''31.77-56.5 kHz'''
| Scan rates || Vertical 60-75 Hz; horizontal 31.77-56.5 kHz
|-
|-
| Video input || RGB analogue, RS-343A, '''0.714 V peak-to-peak''' positive-going
| Video input || RGB analogue, RS-343A, 0.714 V peak-to-peak, positive-going
|-
|-
| Sync on green || RS-343A level, '''0.286 V ±10%''' negative-going during blanking
| Sync on green || RS-343A level, 0.286 V ±10%, negative-going during blanking
|-
|-
| Separate or composite sync || 1 to 5 V peak-to-peak, either polarity
| Separate or composite sync || 1 to 5 V peak-to-peak, either polarity
|-
|-
| Mains || '''90-134 and 198-260 VAC, self-configuring''', 47-63 Hz
| Controls || Front panel: power, brightness, contrast; command button for shift, size, zoom and reset
|-
| Mains || 90-134 and 198-260 VAC, self-configuring, 47-63 Hz
|-
| Power || 90 W maximum
|-
|-
| Power || '''90 W maximum'''
| Size and weight || 424 mm H × 405 mm W × 452.3 mm D; 14 kg (31 lb)
|-
|-
| Size / weight || 16.5 in (424 mm) H x 15.8 in (405 mm) W x 17.6 in (452.3 mm) D; 31 lb (14 kg)
| Operating environment || 10-40 °C; 20-95% humidity, non-condensing
|}
|}


The '''0.714 V p-p video and 0.286 V sync-on-green''' levels are the most useful numbers in this manual: they are a direct go/no-go check on a suspect video cable or graphics card with an oscilloscope, and they apply to every Apple analogue RGB display of this era.
The video and sync levels give a check for a suspect video cable or graphics card with an oscilloscope. Degauss is automatic at power-on; to degauss by hand, switch the display off and on again. A full degauss needs the display to have been off for 20 minutes or more.<ref name="spec" /> If the indicator light goes out before adjustments are finished, the display has taken a pause of more than 10 seconds as the end of the adjustment; this is normal.<ref name="misc">''Apple Multiple Scan 15 Display'' Service Source, Troubleshooting, Symptom Charts/Miscellaneous p. 5 (PDF p. 17).</ref>
 
Apple also documents '''manual degauss''': switch the monitor off and on again, noting that a full degauss is only possible after the monitor has been off for 20 minutes or more.


== Contents ==
== Contents ==
* '''Basics''' - Overview (pdf pp. 3-4)
* Basics: Overview (PDF pp. 3-4)
* '''Specifications''' - Characteristics, Controls and Ports, Physical and Electrical, Environmental (pdf pp. 6-11)
* Specifications: Characteristics, Controls and Ports, Physical and Electrical, Environmental (PDF pp. 6-11)
* '''Troubleshooting''' - General, symptom charts for No Raster, Geometry, Video and Miscellaneous (pdf pp. 13-17)
* Troubleshooting: General; Symptom Charts for No Raster, Geometry, Video and Miscellaneous (PDF pp. 13-17)
* '''Adjustments''' - Brightness and Contrast, Geometry, '''Zooming''', '''Factory Settings''' (pdf pp. 19-32)
* Adjustments: Brightness and Contrast, Geometry, Zooming, Factory Settings (PDF pp. 19-32)


== What this manual does not contain ==
== What this manual does not contain ==
'''No Take Apart chapter and no Exploded View.''' No parts list, no schematic, no component values, no fuse data. Everything in the Adjustments chapter is done from the front panel; there is no internal alignment procedure.
There is no Take Apart chapter and no exploded view. There is no parts list, schematic, component values or fuse data, and every adjustment is made from the front panel.<ref name="ss" />


== Related Apple display volumes on this wiki ==
== Related pages ==
* [[Apple Multiple Scan 15 AV Service Source]] - the audio version, and the one to use if a 15-inch Apple multiple-scan display has to be opened, because this volume has no Take Apart chapter at all.
* [[Apple Multiple Scan 15 AV Service Source]]: the 15-inch AV display, whose manual does have Take Apart and internal adjustment chapters.
* [[Apple Multiple Scan 14 Service Source]] - the 14-inch volume. It is also '''exchange-only''' (no Take Apart, no Exploded View), but its Specifications chapter prints '''full monitor timing tables''' - back porch, sync width, front porch, dot clock and line and frame periods for 640 x 480 at 60 and 66.67 Hz and 800 x 600 at 60 and 72 Hz - which are reproduced nowhere else on this wiki. Note that Apple prints a '''90-132 VAC''' supply for the Multiple Scan 14 and no 220-240 V figure, so that volume documents the domestic unit only.
* [[Apple Multiple Scan 14 Service Source]]
 
* [[CRT Discharge Procedure]]: a CRT holds a charge on the anode after the mains is removed.
== Pages that cite this document ==
* [[Apple Multiple Scan 15 AV Service Source]] - the audio version, which does have a Take Apart chapter.
 
A CRT display holds a lethal charge on the anode after the mains is removed. Follow [[CRT Discharge Procedure]] before working inside one.


<pdf> File:Multiple scan 15 display.pdf </pdf>
<pdf> File:Multiple scan 15 display.pdf </pdf>


Download: [[:File:Multiple scan 15 display.pdf|Multiple scan 15 display.pdf]]
Download: [[:File:Multiple scan 15 display.pdf|Multiple scan 15 display.pdf]]
== References ==
<references />


[[Category:Service Manuals]]
[[Category:Service Manuals]]
[[Category:Apple Vintage Computers]]
[[Category:Apple Vintage Computers]]
[[Category:Apple Service Source]]
[[Category:Apple Service Source]]

Latest revision as of 14:21, 30 September 2026

The Apple Multiple Scan 15 Display volume of Apple's Service Source is a 32-page service manual for the Multiple Scan 15, a 15-inch flat square colour display. The PDF was distilled on 9 November 1995.[1]

Specifications as printed

[edit | edit source]
Apple Multiple Scan 15 specifications[2]
Item Value
Picture tube 15 in diagonal flat square shadow mask, 13.3 in viewable; 0.28 mm dot pitch; polished surface
Screen resolution 640 × 480, 800 × 600, 832 × 624; 1024 × 768 only on PCs through a Mac/PC adapter
Scan rates Vertical 60-75 Hz; horizontal 31.77-56.5 kHz
Video input RGB analogue, RS-343A, 0.714 V peak-to-peak, positive-going
Sync on green RS-343A level, 0.286 V ±10%, negative-going during blanking
Separate or composite sync 1 to 5 V peak-to-peak, either polarity
Controls Front panel: power, brightness, contrast; command button for shift, size, zoom and reset
Mains 90-134 and 198-260 VAC, self-configuring, 47-63 Hz
Power 90 W maximum
Size and weight 424 mm H × 405 mm W × 452.3 mm D; 14 kg (31 lb)
Operating environment 10-40 °C; 20-95% humidity, non-condensing

The video and sync levels give a check for a suspect video cable or graphics card with an oscilloscope. Degauss is automatic at power-on; to degauss by hand, switch the display off and on again. A full degauss needs the display to have been off for 20 minutes or more.[2] If the indicator light goes out before adjustments are finished, the display has taken a pause of more than 10 seconds as the end of the adjustment; this is normal.[3]

Contents

[edit | edit source]
  • Basics: Overview (PDF pp. 3-4)
  • Specifications: Characteristics, Controls and Ports, Physical and Electrical, Environmental (PDF pp. 6-11)
  • Troubleshooting: General; Symptom Charts for No Raster, Geometry, Video and Miscellaneous (PDF pp. 13-17)
  • Adjustments: Brightness and Contrast, Geometry, Zooming, Factory Settings (PDF pp. 19-32)

What this manual does not contain

[edit | edit source]

There is no Take Apart chapter and no exploded view. There is no parts list, schematic, component values or fuse data, and every adjustment is made from the front panel.[1]

[edit | edit source]

Download: Multiple scan 15 display.pdf

References

[edit | edit source]
  1. ↑ 1.0 1.1 Apple Computer, Apple Multiple Scan 15 Display (Service Source), 32 pp., 1995. Hosted as File:Multiple scan 15 display.pdf.
  2. ↑ 2.0 2.1 Apple Multiple Scan 15 Display Service Source, Specifications: Characteristics pp. 1-3, Controls and Ports p. 4, Physical and Electrical p. 5, Environmental p. 6 (PDF pp. 6-11).
  3. ↑ Apple Multiple Scan 15 Display Service Source, Troubleshooting, Symptom Charts/Miscellaneous p. 5 (PDF p. 17).
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