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The '''Apple High-Resolution Monochrome Monitor''' volume of Apple's ''Service Source'' is a '''73-page''' service manual for the 12-inch high-resolution monochrome monitor (M0400/M1050 family). The PDF was distilled on 28 November 1995.
The '''Apple High-Resolution Monochrome Monitor''' volume of Apple's ''Service Source'' is a 73-page service manual for Apple's 12-inch High-Res Monochrome Monitor, a black-and-white display for the Macintosh II.<ref name="hrtp">Apple Computer, ''High-Res Monochrome Monitor Technical Procedures'', from ''Apple Service Technical Procedures, Volume Six'', hosted as [[:File:Apple High-Res Monochrome Monitor Technical Procedures.pdf]]. Section 1, Basics, p. 1.2: "a 12-inch monitor that provides a high-resolution black and white display for the Macintosh II". Take-Apart, p. 2.13: correct fuse 250 V, 2 A.</ref> The PDF was created on 28 November 1995.


== Specifications as printed ==
== Specifications as printed ==
Line 7: Line 7:
! Item !! Value
! Item !! Value
|-
|-
| Picture tube || 12 in diagonal
| Picture tube || 12 in diagonal; phosphor EIA type P4 (white); flat, antiglare surface
|-
|-
| Screen resolution || 640 x 480, 76 dpi
| Screen resolution || 640 × 480, 76 dpi
|-
|-
| Scan rates || vertical refresh '''66.7 Hz'''; horizontal '''35.0 kHz'''
| Active display area || 8.38 × 6.3 in (213 × 160 mm)
|-
|-
| User controls || rear panel power switch; brightness and contrast on the right side
| Scan rates || Vertical refresh 66.7 Hz; horizontal 35.0 kHz
|-
|-
| Power supply || universal, '''85-270 VAC''', 50-60 Hz, '''40 W maximum'''
| Input signal || Analogue video, RS-343
|-
|-
| Size / weight || 10 in (254 mm) H x 12.2 in (310 mm) W x 14.4 in (365 mm) D; 17 lb (7.7 kg)
| User controls || Rear panel power switch; brightness and contrast on the right side
|-
| Power supply || Universal, 85-270 VAC, 50-60 Hz, 40 W maximum
|-
| Size and weight || 10 in (254 mm) H × 12.2 in (310 mm) W × 14.4 in (365 mm) D; 17 lb (7.7 kg)
|-
| Operating environment || 10-40 °C; 90% humidity maximum, non-condensing; 10,000 ft (3,048 m) maximum
|-
| Fuse || 2 A, 250 V (Apple part 740-0305)
|}
|}


== Contents ==
== Contents ==
* '''Specifications''' - Characteristics, Controls, Physical and Electrical, Operating Environment (pdf pp. 3-7)
* Specifications: Characteristics, Controls, Physical and Electrical, Operating Environment (PDF pp. 2-7)
* '''Troubleshooting''' - General, symptom charts for No Raster, Geometry, Synchronization, Video and Miscellaneous (pdf pp. 9-14)
* Troubleshooting: General, and symptom charts for No Raster, Geometry, Synchronization, Video and Miscellaneous (PDF pp. 8-14)
* '''Take Apart''' - Rear Cover, Main Board, '''Power Supply''', '''Fuse''', Contrast Control Board, '''Video Board C''', CRT, LED Cable Assembly, Power Switch (pdf pp. 16-49)
* Take Apart: Rear Cover, Main Board, Power Supply, Fuse, Contrast Control Board, Video Board C, CRT, LED Cable Assembly, Power Switch (PDF pp. 15-49). The fuse procedure gives the rating as 250 V, 2 A.
* '''Adjustments''' - Geometry, '''Focus''', Video, Light Meter Setup (pdf pp. 51-71)
* Adjustments: Geometry, Focus, Video, Light Meter Setup (PDF pp. 50-71)
* '''Exploded View''' (pdf pp. 72-73)
* Exploded View, with Apple part numbers (PDF pp. 72-73)


This monitor has a '''separate power supply board''' that Apple treats as its own replaceable module, which the 12-inch monochrome display does not - the two manuals are not interchangeable even though the tube size matches.
{| class="wikitable styled-table" style="width:70%;"
|+'''Part numbers from the exploded view'''
! Part number !! Description
|-
| 076-0246 || CRT assembly
|-
| 981-0007 || Video board "C"
|-
| 948-0031 || Video board "C" case cover
|-
| 661-0396 || Main board
|-
| 661-0395 || Power supply
|-
| 740-0305 || Fuse, 2 A / 250 V
|-
| 933-0014 || I/O connector board
|-
| 905-0004 || Contrast control board
|-
| 590-0440 || LED and cable assembly
|-
| 590-0441 || Cable, logic to power supply
|-
| 590-0442 || Cable, logic to control panel
|-
| 937-0038 || On/off switch
|-
| 949-0116 || Bezel
|-
| 949-0117 || Rear cover
|-
| 949-0119 || Adjustment panel cover
|-
| 949-0118 || Stand attachment
|}


== What this manual does not contain ==
== What this manual does not contain ==
No parts list, no schematic, no component values, and '''no fuse rating'''. The Adjustments chapter covers geometry, focus and video; no supply-rail voltage or tolerance is printed.
No schematic and no component values. The Adjustments chapter covers geometry, focus and video; it prints no supply-rail voltages or tolerances.
 
Apple's earlier ''High-Res Monochrome Monitor Technical Procedures'' (May-June 1987) is also hosted, as [[:File:Apple High-Res Monochrome Monitor Technical Procedures.pdf]]. It adds CRT safety and live-adjustment rules, CRT disposal, the AC inlet replacement, a separate illustrated parts list, and Apple's instruction not to touch the factory-set yoke, tilt, ring or geometry adjustments.<ref name="hrtp" />
 
A CRT holds a lethal charge on the anode after the mains is removed. Follow the [[CRT Discharge Procedure]] before working inside one; Apple's Take Apart procedures carry the same warning.


== Pages that cite this document ==
== Pages that cite this document ==
* [[Macintosh 12 Monochrome Service Source]] - the similar-looking but differently built 12-inch monochrome display.
* [[Macintosh 12 Monochrome Service Source]]: the 12-inch monochrome display, a different design with the same tube size.
 
A CRT display holds a lethal charge on the anode after the mains is removed. Follow [[CRT Discharge Procedure]] before working inside one. Apple's own Take Apart chapters open with the same warning.


<pdf> File:Highres monochrome monitor.pdf </pdf>
<pdf> File:Highres monochrome monitor.pdf </pdf>


Download: [[:File:Highres monochrome monitor.pdf|Highres monochrome monitor.pdf]]
Download: [[:File:Highres monochrome monitor.pdf|Highres monochrome monitor.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 13:08, 30 September 2026

The Apple High-Resolution Monochrome Monitor volume of Apple's Service Source is a 73-page service manual for Apple's 12-inch High-Res Monochrome Monitor, a black-and-white display for the Macintosh II.[1] The PDF was created on 28 November 1995.

Specifications as printed

[edit | edit source]
Item Value
Picture tube 12 in diagonal; phosphor EIA type P4 (white); flat, antiglare surface
Screen resolution 640 × 480, 76 dpi
Active display area 8.38 × 6.3 in (213 × 160 mm)
Scan rates Vertical refresh 66.7 Hz; horizontal 35.0 kHz
Input signal Analogue video, RS-343
User controls Rear panel power switch; brightness and contrast on the right side
Power supply Universal, 85-270 VAC, 50-60 Hz, 40 W maximum
Size and weight 10 in (254 mm) H × 12.2 in (310 mm) W × 14.4 in (365 mm) D; 17 lb (7.7 kg)
Operating environment 10-40 °C; 90% humidity maximum, non-condensing; 10,000 ft (3,048 m) maximum
Fuse 2 A, 250 V (Apple part 740-0305)

Contents

[edit | edit source]
  • Specifications: Characteristics, Controls, Physical and Electrical, Operating Environment (PDF pp. 2-7)
  • Troubleshooting: General, and symptom charts for No Raster, Geometry, Synchronization, Video and Miscellaneous (PDF pp. 8-14)
  • Take Apart: Rear Cover, Main Board, Power Supply, Fuse, Contrast Control Board, Video Board C, CRT, LED Cable Assembly, Power Switch (PDF pp. 15-49). The fuse procedure gives the rating as 250 V, 2 A.
  • Adjustments: Geometry, Focus, Video, Light Meter Setup (PDF pp. 50-71)
  • Exploded View, with Apple part numbers (PDF pp. 72-73)
Part numbers from the exploded view
Part number Description
076-0246 CRT assembly
981-0007 Video board "C"
948-0031 Video board "C" case cover
661-0396 Main board
661-0395 Power supply
740-0305 Fuse, 2 A / 250 V
933-0014 I/O connector board
905-0004 Contrast control board
590-0440 LED and cable assembly
590-0441 Cable, logic to power supply
590-0442 Cable, logic to control panel
937-0038 On/off switch
949-0116 Bezel
949-0117 Rear cover
949-0119 Adjustment panel cover
949-0118 Stand attachment

What this manual does not contain

[edit | edit source]

No schematic and no component values. The Adjustments chapter covers geometry, focus and video; it prints no supply-rail voltages or tolerances.

Apple's earlier High-Res Monochrome Monitor Technical Procedures (May-June 1987) is also hosted, as File:Apple High-Res Monochrome Monitor Technical Procedures.pdf. It adds CRT safety and live-adjustment rules, CRT disposal, the AC inlet replacement, a separate illustrated parts list, and Apple's instruction not to touch the factory-set yoke, tilt, ring or geometry adjustments.[1]

A CRT holds a lethal charge on the anode after the mains is removed. Follow the CRT Discharge Procedure before working inside one; Apple's Take Apart procedures carry the same warning.

Pages that cite this document

[edit | edit source]

Download: Highres monochrome monitor.pdf

References

[edit | edit source]
  1. ↑ 1.0 1.1 Apple Computer, High-Res Monochrome Monitor Technical Procedures, from Apple Service Technical Procedures, Volume Six, hosted as File:Apple High-Res Monochrome Monitor Technical Procedures.pdf. Section 1, Basics, p. 1.2: "a 12-inch monitor that provides a high-resolution black and white display for the Macintosh II". Take-Apart, p. 2.13: correct fuse 250 V, 2 A.
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