Editing Apple Multiple Scan 1705 Service Source

The '''Apple Multiple Scan 1705 Display''' volume of Apple's ''Service Source'' is a 165-page service manual for the Multiple Scan 1705, a 17-inch colour display supplied with a Macintosh-to-VGA adapter for PC use. The PDF was distilled on 20 January 1996.<ref name="ss">Apple Computer, ''Apple Multiple Scan 1705 Display'' (''Service Source''), 165 pp., 1996. Hosted as [[:File:Multiple scan 1705 display.pdf]].</ref>

== Specifications as printed ==
<templatestyles src="Template:StyledTable/styles.css" />
{| class="wikitable styled-table"
|+'''Apple Multiple Scan 1705 specifications'''<ref name="spec">''Apple Multiple Scan 1705 Display'' Service Source, Specifications: Characteristics pp. 1-2, Controls and Ports p. 7, Physical and Electrical p. 8 (PDF pp. 9-10, 15-16).</ref>
! Item !! Value
|-
| Picture tube || 17 in FST, 15.8 in viewable; in-line gun; neck diameter 29.1 mm; P22 phosphor; 0.28 mm dot pitch
|-
| Screen resolution || 720 × 400 at 70 Hz and 640 × 480 at 60 Hz (VGA); 640 × 480 at 70 Hz (VESA); 800 × 600 at 72 Hz; 1024 × 768 at 70 Hz; 1280 × 1024 at 60 and 84 Hz; further VESA modes at 60 and 75 Hz
|-
| Scan rates || Vertical 47-120 Hz; horizontal 31-65 kHz
|-
| Connector || 15-pin miniature D-type; RGB with separate sync
|-
| Controls || Front: brightness and contrast knobs, degauss button, up, down and select buttons. Pressing Down and Up together restores factory settings
|-
| Mains || Universal, 90-264 VAC, 47/63 Hz single phase
|-
| Power || 100 W maximum
|-
| Size and weight || 437 mm H × 420 mm W × 479 mm D; 20.5 kg (45 lb)
|}

== Service notes from the manual ==
* The video board and main deflection board cannot be separated without risk of damaging the CRT connector, so Apple treats them as one module. When they are out of the bezel, do not let their weight rest on the brightness and contrast knobs, which protrude about an inch past the main bracket. Connectors P302, P702 and P703 are hard to remove: release their tabs with a small flat-blade screwdriver first.<ref name="basics">''Apple Multiple Scan 1705 Display'' Service Source, Basics pp. 1-5 (PDF pp. 3-7).</ref>
* Apple specifies its own high-voltage probe, part 076-0392, and a 246 or L-248 light meter (or a colour analyser or photometer) for adjustments; its readings assume those instruments.<ref name="basics" />
* High voltage: with the rear housing and EMI shield off and the display running, the Apple probe under the anode connector should read 25 V DC on the meter, which is 25 kV. Do not remove the probe until the power is off.<ref name="hv">''Apple Multiple Scan 1705 Display'' Service Source, Troubleshooting, "Checking High Voltage" pp. 14-16, and "No Raster Flowchart" pp. 17-19 (PDF pp. 32-37).</ref>
* The front indicator light goes out 10 seconds after adjusting stops, by design.<ref name="misc">''Apple Multiple Scan 1705 Display'' Service Source, Troubleshooting, Symptom Charts/Miscellaneous p. 13 (PDF p. 31).</ref>
* Whenever the display is taken apart, reset the degaussing coils: at least 50 mm from the CRT corner screws at the top, their overlap taped together, and 30 mm from the canceling coil on the yoke at the bottom.<ref name="degauss">''Apple Multiple Scan 1705 Display'' Service Source, Additional Procedures, Introduction and "Adjusting the Degaussing Coils" pp. 1-6 (PDF pp. 108-113).</ref>

== Contents ==
* Basics: Overview, Features, Troubleshooting and Repair Tips, Special Tools (PDF pp. 3-7)
* Specifications: Characteristics, Controls and Ports, Physical and Electrical, Environmental (PDF pp. 9-17)
* Troubleshooting: General, First Checklist, Symptom Charts for No Raster, Video, Geometry and Miscellaneous, Checking High Voltage, No Raster Flowchart (PDF pp. 19-37)
* Take Apart: Special Safety Precautions, Monitor Stand, Control Panel Cover, Rear Housing, EMI Shield, Main Deflection and CRT/Video Boards and Rear Fence, Bezel, Brightness and Contrast Knobs, On/Off Switch with Spring, Control Panel Cover Latch, Rear Fence, Internal Video and AC Inlet Assembly, Video Interconnect Cable (PDF pp. 39-106)
* Additional Procedures: Introduction, Adjusting the Degaussing Coils (PDF pp. 108-113)
* Adjustments: User Adjustments, Non User Adjustments (PDF pp. 115-163)
* Exploded View (PDF p. 165)

== What this manual does not contain ==
No parts list, schematic, component values or fuse rating.<ref name="ss" />

== Related pages ==
* [[Apple Multiple Scan 720 Display Service Source]]: Apple's Display Service Utility uses the same "Multiple Scan 720/1705" pattern set for both displays.<ref name="basics" />
* [[Apple Multiple Scan 17 Service Source]]
* [[CRT Discharge Procedure]]

<pdf> File:Multiple scan 1705 display.pdf </pdf>

Download: [[:File:Multiple scan 1705 display.pdf|Multiple scan 1705 display.pdf]]

== References ==
<references />

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