Apple Colorsync 17 Displays Service Manual
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Service Source
17" ColorSync Displays
17” ColorSync Display (was AppleVision 750)
17” ColorSync AV Display (was AppleVision 750AV)
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Service Source
Hot Issues
17" ColorSync Displays
(AppleVision 750, 750AV)
Hot Issues Overview - 1
Overview
This chapter is designed to highlight unique or highpriority product issues that you should be aware of before
servicing this display.
This chapter alerts you to important issues and provides
links to other areas in the manual where more complete
information can be found. This chapter is not intended to
replace other parts of this manual; it merely provides a
pointer to pertinent information in those chapters.
The date the Hot Issue was published is indicated in
parentheses after the title.
Hot Issues Revised Troubleshooting Chapter Features CRT/Video Board Pro-
Revised Troubleshooting Chapter
Features CRT/Video Board Procedures
(3/98)
The Troubleshooting chapter has been revised to include
procedures for downloading setup parameters, adjusting the
display after replacing the CRT/video board or the main
deflection board, and diagnosing suspected hardware
problems.
The latest version of the Diagnostics utility called Display
Service Utility (v4.2.1) enables service providers to more
accurately determine the source of hardware problems and
readily repair the display.
The CRT/video board (Apple part number 661-1373) is
now offered worldwide as a replacement module. Refer to the
Hot Issues Revised Troubleshooting Chapter Features CRT/Video Board Pro-
expanded Troubleshooting chapter for the latest
troubleshooting procedures; refer to the Diagnostics site of
Service Source Online or the Service Source Companion CD
(Diagnostic Utilities folder) for the Display Service Utility
v4.2.1.
Hot Issues Jittery or Blurry Video with Power Macintosh 5500/6500
Jittery or Blurry Video with Power
Macintosh 5500/6500 (12/97)
If the display exhibits jittery or blurry video when
connected to a Power Macintosh 5500 or 6500, suspect the
computer, not the monitor.
Video jitter affects monitors connected to computers having
a 225 or 250 MHz logic board. Jitter is evident where the
pixels shimmer or jump at the edges of the screen, windows,
or dialog boxes.
Blurry video is seen as a fuzzy image over the entire screen
on monitors set to resolutions of 832x624 and higher.
Hot Issues Jittery or Blurry Video with Power Macintosh 5500/6500
Identifying Suspect Units
Video jitter or blurry video can be caused by Power
Macintosh computers within the following serial number
ranges.
Video Jitter
• PM 5500 from TY705xxxxx to TY715xxxxx
• PM 6500 from XB708xxxxx to XB718xxxxx
Blurry Video
• PM 6500 from XB708xxxxx to XB723xxxxx
The system software on Power Macintosh 6500 computers
allows selecting monitor resolutions above 1152x870. But
these higher resolutions are not supported and cause poor
video output, such as misaligned or skewed video, low
brightness, blurriness, and so on. Monitors connected to
Hot Issues Jittery or Blurry Video with Power Macintosh 5500/6500
Power Macintosh 6500 computers should not be set to
resolutions higher than 1152x870.
Check the Monitors & Sound control panel to make sure the
resolution is set to 1152x870 or lower. For a chart of
supported monitor resolutions for the Power Macintosh
6500, see the Specifications chapter in the Performa/
Power Macintosh 6400 and 6500 Series manual on Service
Source.
Although these symptoms have never been reported for a
Power Macintosh 5500, the 225 MHz logic board used in the
Power Macintosh 6500 is also used in the 5500. Refer to
the Troubleshooting chapter in Service Source for both
Power Macintosh manuals.
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Service Source
Basics
17" ColorSync Displays
(AppleVision 750, 750AV)
Basics Product Name Change - 1
Product Name Change
The AppleVision 750 and 750AV Displays were renamed in
November, 1997.
Original Name New Name
AppleVision 750 Display 17” (16.1” VIS) ColorSync Display
AppleVision 750AV Display 17” (16.1” VIS) ColorSync AV Display
Although the body of this service manual retains the
AppleVision names, both names are shown on the title page of
each chapter. The ColorSync name change was the only
change to the product.
Note:
VIS represents the diagonal viewable image size of the
display.
Basics Product Overview - 2
Product Overview
The AppleVision 750AV
Display is a full-page,
Trinitron color monitor that
supports a variety of
resolutions. The display
includes sound and video
support for multimedia
application programs and
advanced controls for
accurate color rendering.
The AppleVision 750AV
Display has a diagonal
viewable image size of 16.1
inches.
Basics Product Overview - 3
The AppleVision 750AV Display works with both Mac OSbased and Windows-based computers.
Features
The AppleVision 750AV Display features
• A wide range of screen resolutions (from 640x480 to
1280x1024)
• A tilt/swivel base that allows the monitor to be
positioned for optimal viewing comfort
• Integrated speaker enclosure and voice recognitioncapable microphone
• Energy Star Power Conservation compliance
• TCO 92 compliance
Except for the speaker enclosure and microphone, the
AppleVision 750 Display shares the same features as the
AppleVision 750AV Display.
Basics Repair Issue: Display Service Utility - 4
Repair Issue: Display Service Utility
The Display Service Utility
(on the Service Source
Companion CD: Diagnostic
Utilities folder) is an
application that you can use
to display video test
patterns, run some
troubleshooting
procedures, and adjust
geometry.
Basics Repair Issue: Display Service Utility - 5
A selection for the
AppleVision 750/750AV
was added to the latest
version of the Display
Service Utility on the
Service Source Companion
CD and Service Source
Online. Within the Display
Service Utility, select
Pattern Selections:
AppleVision 750/750AV,
and click the Adjust
Geometry button.
Clicking the Adjust
Geometry button opens a
screen of scroll bars that
you can use to make various
Basics Repair Issue: Display Service Utility - 6
geometry adjustments. Although most of these adjustments
can be duplicated by using the Monitors & Sound control
panel, high voltage can only be adjusted with the Display
Service Utility.
Refer to the Read Me document in the Display Service Utility
folder for more information.
For more information on using the Display Service Utility
for troubleshooting or adjusting the AppleVision 750 and
750AV displays, refer to the Troubleshooting chapter in this
manual.
Basics Repair Issue: TCO 95 Housing - 7
Repair Issue: TCO 95 Housing
Effective January 1998, TCO 95 plastics are used for the
17” ColorSync Display (but not the AV version). The higher
environmental rating of plastics is used for the following
housing parts:
• 076-0723 ADB Board Panel, TCO 95
• 922-3335 Front Bezel, TCO 95
• 922-3338 Rear Housing, TCO 95
• 922-3343 Bottom Housing, TCO 95
• 922-3387 Blank Plate, TCO 95
Important:
identified by the TCO 95 marking on the back of the rear
housing. Replace TCO 95 housing parts like-for-like. Do not
substitute with TCO 92 parts.
ColorSync displays using TCO 95 plastics can be
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Service Source
Specifications
17" ColorSync Displays
(AppleVision 750, 750AV)
Specifications Introduction - 1
Introduction
Specifications information for this product can be found in this
chapter and also in the Spec Database, which you can access in one
of three ways:
• Launch it directly by double-clicking the Apple Spec Database
runtime alias at the top level of the Main Service Source CD.
• Select “Apple Spec Database” from the Service Source dropdown main menu.
• Click the Acrobat toolbar icon for the database, which is near
the right end of the toolbar with the letters “SP.”
Specifications Characteristics - 2
Characteristics
Picture Tube
Screen Resolution
17-in. Trinitron CRT (16.1-in. diagonal viewable image)
Multiple scan, antistatic, antiglare surface treatment
0.26-mm stripe pitch
640x480 at 60 Hz in VGA mode
640x480 at 66.67 Hz in Macintosh mode
800x600 at 60.31 Hz in VESA mode
800x600 at 75 Hz in VESA mode
832x624 at 74.55 Hz in Macintosh mode
1024x768 at 74.93 Hz in Macintosh mode
1024x768 at 60 Hz in VESA mode
1152x870 at 75 Hz in Macintosh mode
1280x1024 at 60 Hz in VESA mode
1280x1024 at 75.03 Hz in VESA mode
Specifications Characteristics - 3
Scan Rates
Cable Connector
Input Signals
Vertical refresh rate: 40–120 Hz
Horizontal scan rate: 30–80 kHz
15-pin miniature D-type
Red, green, and blue signals; separate sync
Specifications Characteristics - 4
System Requirements
System software version 7.1 or later
Computers with 68040 microprocessors or later
AppleVision software is supported by the following computers:
PCI CPUs: 7200, 7500, 7600, 8500, 9500, 6360, 6400,
6500, 7300, 8600, 9600 or later CPUs
PowerMac CPUs: 8100/100, 8100/80AV, 7100/80, 6100/
66, 6100/60AV, 6200, 6300
PowerBooks: 280c & 2300/Mini Dock/Duo Dock II, 540c,
5300, 1400, and 3400
Quadra CPUs: Q605, Q610, Q630, Q630/PowerMac Upgrade,
C650, Q650, Q650/STP, Q950, Q950/STP, 660AV, 840AV
Apple DOS-compatible CPUs: Q610/DOS, 6100/DOS, 640
DOS, PC-compatible Pentium 100 MHz and 586 Pentium
100 MHz PC cards on PCI CPUs.
Specifications Characteristics - 5
Monitor Timings
640x480
Resolution @ 60 Hz
Horizontal Timing Horizontal Timing
1/H: 31.5 kHz 1/H: 34.97 kHz
Back Porch: 48 dots Back Porch: 96 dots
H SYNC: 96 dots H SYNC: 64 dots
Front Porch: 16 dots Front Porch: 64 dots
1 H: 31.75 µs 1 H: 28.0 µs
1/dot: 25.175 MHz 1/dot: 30.24 MHz
Vertical Timing Vertical Timing
1 V: 16.7 ms 1 V: 15.0 ms
Back Porch: 33 H Back Porch: 39 H
V SYNC: 2 H V SYNC: 3 H
Front Porch: 10 H Front Porch: 3 H
640x480
Resolution @ 66.67 Hz
Specifications Characteristics - 6
Monitor Timings
800x600
Resolution @ 60.31 Hz
Horizontal Timing Horizontal Timing
1/H: 37.9 kHz 1/H: 46.9 kHz
Back Porch: 88 dots Back Porch: 160 dots
H SYNC: 128 dots H SYNC: 80 dots
Front Porch: 40 dots Front Porch: 16 dots
1 H: 27.85 µs 1 H: 21.33 µs
1/dot: 40.000 MHz 1/dot: 49.5 MHz
Vertical Timing Vertical Timing
1 V: 16.58 ms 1 V: 13.33 ms
Back Porch: 22 H Back Porch: 21 H
V SYNC: 4 H V SYNC: 3 H
Front Porch: 2 H Front Porch: 1 H
800x600
Resolution @ 75 Hz
Specifications Characteristics - 7
Monitor Timings
832x624
Resolution @ 74.55 Hz
Horizontal Timing Horizontal Timing
1/H: 49.7 kHz 1/H: 60.24 kHz
Back Porch: 224 dots Back Porch: 176 dots
H SYNC: 64 dots H SYNC: 96 dots
Front Porch: 32 dots Front Porch: 32 dots
1 H: 20.1 µs 1 H: 16.6 µs
1/dot: 57.28 MHz 1/dot: 80 MHz
Vertical Timing Vertical Timing
1 V: 13.41 ms 1 V: 13.35 ms
Back Porch: 38 H Back Porch: 30 H
V SYNC: 3 H V SYNC: 3 H
Front Porch: 2 H Front Porch: 3 H
1024x768
Resolution @ 74.93 Hz
Specifications Characteristics - 8
Monitor Timings
1024x768
Resolution @ 60 Hz
Horizontal Timing Horizontal Timing
1/H: 48.4 kHz 1/H: 68.681 kHz
Back Porch: 160 dots Back Porch: 144 dots
H SYNC: 136 dots H SYNC: 128 dots
Front Porch: 24 dots Front Porch: 32 dots
1 H: 20.68 µs 1 H: 14.56 µs
1/dot: 65.0 MHz 1/dot: 100.00 MHz
Vertical Timing Vertical Timing
1 V: 16.66 ms 1 V: 13.3 ms
Back Porch: 29 H Back Porch: 39 H
V SYNC: 6 H V SYNC: 3 H
Front Porch: 3 H Front Porch: 3 H
1152x870
Resolution @ 75 Hz
Specifications Characteristics - 9
Monitor Timings
1280x1024
Resolution @ 60 Hz
Horizontal Timing Horizontal Timing
1/H: 63.8 kHz 1/H: 79.976 kHz
Back Porch: 272 dots Back Porch: 248 dots
H SYNC: 112 dots H SYNC: 144 dots
Front Porch: 16 dots Front Porch: 16 dots
1 H: 15.23 µs 1 H: 12.5 µs
1/dot: 110.25 MHz 1/dot: 135 MHz
Vertical Timing Vertical Timing
1 V: 16.66 ms 1 V: 13.33 ms
Back Porch: 39 H Back Porch: 38 H
V SYNC: 3 H V SYNC: 3 H
Front Porch: 1 H Front Porch: 1 H
1280x1024
Resolution @ 75.03 Hz
Specifications Characteristics - 10
Speakers (750AV only)
Stereo, with ported (bass reflex) chamber design
Maximum loudness: 92 dB SPL at 1 kHz at 0.5 meters
Frequency response: 70 Hz to 20 kHz ± 6 dB
Audio input signal: Accepts audio signal of up to 4 Vpp (line level-
low sensitivity) or as low as 20 mVpp (microphone level-high
sensitivity)
Internal speaker muted when headphones are inserted into the
headphone port
Specifications Controls and Ports - 11
Controls and Ports
User Controls
Front panel (750AV): power, brightness, contrast, bass, treble,
microphone on, volume, mute, and three on-screen control
buttons
Front panel (750): power, brightness, contrast, and three on-
screen control buttons
Additional picture and sound controls available using the Monitors
& Sound control panel (Mac OS-based computers) or onscreen controls (Windows-based computers)
Automatic degauss at power-on; manual degauss by turning power
switch off, then on
Specifications Controls and Ports - 12
I/O Ports
Apple Desktop Bus (ADB): Two pass-through output ports
Headphone/Speaker (750AV): One audio output port and two
built-in speakers
Microphone (750AV): One input port and one built-in
microphone
Specifications Physical and Electrical - 13
Physical and Electrical
Power Supply
Size and Weight (750)
Size and Weight (750AV)
Voltage: 100–120 VAC; 220–240 VAC
Frequency: 50–60 Hz
Power (750): 130 W maximum
Power (750AV): 190 W maximum
Height: 16.6 in. (425 mm)
Width: 16.0 in. (410 mm)
Depth: 17.7 in. (455 mm)
Weight: 50 lb. (22.5 kg)
Height: 18.8 in. (485 mm)
Width: 16.0 in. (410 mm)
Depth: 18.8 in. (485 mm)
Weight: 60 lb. (27 kg)
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