DOWNLOAD Sharp XG-C68X (serv.man3) Service Manual ↓ Size: 9.14 MB | Pages: 106 in PDF or view online for FREE

Note

• This projector may not be able to display images from notebook computers in simultaneous (CRT/LCD) mode. Should this occur, turn off

the LCD display on the notebook computer and output the display data in “CRT only” mode. Details on how to change display modes can
be found in your notebook computer’s operation manual.

• When this projector receives 640 × 350 VESA format VGA signals, “640 × 400” appears on the screen.
• When receiving 1,600 × 1,200 VESA format signals, sampling occurs and part of the image may be cut as the image is displayed in 1,024 lines.
• Optimum image quality will be achieved by matching your computer’s output resolution to the projector’s native resolution (1024 × 768).

• Multiple signal support

Horizontal Frequency: 15–126 kHz, Vertical Frequency: 43–200 Hz*, Pixel Clock: 12–230 MHz

• Compatible with sync on green and composite sync signals
• UXGA and SXGA compatible in advanced intelligent compression
• AICS (Advanced Intelligent Compression and Expansion System) resizing technology

PC/

MAC

Horizontal 
Frequency

(kHz)

Vertical 

Frequency

(Hz)

Horizontal 
Frequency

(kHz)

Vertical 

Frequency

(Hz)

VGA

PC

PC

SVGA

XGA

VESA 

Standard

Resolution

640 

×

 350

1,152 

×

 864

1,152 

×

 882

1,280 

×

1,024

1,400 

×

1,050

720 

×

 350

640 

×

 400

720 

×

 400

640 

×

 480

800 

×

 600

1,024 

×

 768

Display

Upscale

True

27.0

60

27.0

60

27.0

60

60

31.5

70

31.5

70

31.5

70

31.5

60

34.7

70

37.9

72

37.5

75

43.3

85

47.9

90

53.0

100

61.8

120

78.5

150

80.9

160

100.4

200

31.4

50

35.1

56

37.9

60

44.5

70

48.1

72

46.9

75

53.7

85

56.8

90

VESA 

Standard

Resolution

Display

64.0

100

77.2

120

98.3

150

102.1

160

125.6

200

98.8

120

31.5

70

37.9

85

37.9

27.0

85

37.9

85

26.2

50

PC/

MAC

Advanced 

intelligent 

Compression

Advanced 

intelligent 

Compression

Advanced 

intelligent 

Compression

54.3

60

67.5

75

75.7

80

77.3

85

65.9

72

54.8

60

67.4

74

64.0

60

1,600 

×

1,200

SXGA

SXGA+

UXGA

91.1

85

74.7

52

80.0

75

78.1

74

74.6

70

81.3

65

90.1

72

93.8

75

106.3

85

75.0

60

108.4

100

64.0

60

87.5

70

MAC 16"

MAC 21"

HP (WS)

WS

PC/

MAC 13"

PC/

MAC 19"

PC/

MAC 21"

PC (WS)

SGI (WS)

SUN (WS)

Intelligent 

Compression

Upscale

640 

×

 480

800 

×

 600

832 

×

 624

Upscale

34.9

1,152 

×

 870

68.5

67

1,280 

×

1,024

60.0

75

1,280 

×

1,024

78.1

72

60.0

60

1,024 

×

 768

1,280 

×

 960

VGA

SVGA

SXGA

SXGA

SXGA

XGA

True

48.4

60

80.0

75

46.8

75

1,280 

×

1,024

53.5

50

76.8

72

85.9

85

1,152 

×

 900

60.9

66

71.9

76

49.6

75

75

90.2

100

64.0

70

64.1

72

113.2

140

35.5

43

40.3

50

48.4

60

58.1

72

68.7

85

60.0

75

73.5

90

77.2

96

80.6

100

56.5

70

* Temporary noise may be visible with vertical frequencies

above 100Hz if OSD functions are activated.

15.7
31.5
33.8
15.6
31.3
45.0
33.8
33.8
28.1

480

I

480P
540P

576

I

576P
720P

1035

I

1080

I

1080

I

60
60
60
50
50
60
60
60
50

Signal

Vertical Frequency (Hz)

Horizontal Frequency (kHz)

Check

• Projector power cord is not plugged into the wall outlet.
• Power to the external connected devices is off.
• The selected input mode is wrong.
• Cables incorrectly connected to rear panel of the projector.
• Remote control batteries have run out.
• External output has not been set when connecting notebook computer.
• The cover of the lamp unit is not installed correctly.
• Cables incorrectly connected to the rear panel of the projector.
• “Bright” is set to minimum position.

• Picture adjustments are incorrectly set.
(Video Input only)
• Video input system is incorrectly set.
(INPUT 1 and 2 only)
• Input signal type (RGB/Component) is incorrectly set.

• Adjust the focus.
• The projection distance exceeds the focus range.
(Computer Input only)
• Perform “Fine Sync” Adjustments (“Clock” Adjustment)
• Perform “Fine Sync” Adjustments (“Phase” Adjustment)
• Noise will appear depending on the computer.

• The “DNR” (Digital Noise Reduction) setting is not correct.
• Cables incorrectly connected to rear panel of projector.
• Volume is set to minimum.
• The MUTE display appears.

• If the picture is normal, the sound is due to cabinet shrinkage

caused by a room temperature changes. This will not affect
operation or performance.

• See “Maintenance Indicators”.

• The signal in INPUT 1 or 2 is not an RGB XGA (1024 × 768)

signal. Images cannot be captured if the signals are different
from the above.

Problem

An unusual sound is

occasionally heard

from the cabinet.

Maintenance

indicator illuminates.

Image cannot be

captured.

Page

—

—

35
36

—

Sound is heard but no

picture appears.

Color is faded or poor.

Picture is blurred;

noise appears.

Picture appears but no

sound is heard.

No picture and no sound

or projector does not start.

Check

Problem

Page

Pict in Pict does not

work.

The projector cannot be

turned on or put into the
standby mode using the
ON or STANDBY button

on the projector.

Picture is green on

INPUT 1 or 2

COMPONENT.

Picture is pink (no green)

on INPUT 1 or 2 RGB.

The lamp does not light

up even after the

projector turns on.

The lamp suddenly turns

off during projection.

Picture is too bright and

whitish.

The VOLUME buttons

on the projector do not

work.

A response code cannot

be received when the

projector was attempted

to be controlled using

RS-232C commands

from a computer during

standby.

• The signal in INPUT 1 or 2 is set to a resolution that exceeds

SXGA.

• The signal in INPUT 1 or 2 is sending Component signals 480I,

480P, 540P, 576I, 576P, 720P, 1035I or 1080I.

• The signal in INPUT 1 or 2 is set to interlace mode using RGB

signals.

• The Keylock level is set.

If the Keylock level is set to Level B, all the buttons are locked.
If the Keylock level is set to Level A, only the INPUT and
VOLUME buttons are functional.

• Change the input signal type setting.

• The lamp indicator is illuminating in red.

Replace the lamp.

• Picture adjustments are incorrectly set.

The VOLUME buttons do not work when: (try the VOL+/– on the
remote control)
• when the menu is displayed
• when the lens menu is displayed
• when Pict in Pict is working
• during Enlarge (More than double size)
• a dot by dot screen resolution larger the panel resolution
• In the case of transmitting RS-232C commands from a

computer during standby, it takes a maximum of 30 seconds for
the computer to receive the response code. Set the response
code waiting time of the computer to 30 seconds or more.

—

This projector is equipped with a microprocessor. Its performance could be adversely affected by
incorrect operation or interference. If this should happen, unplug the projector and plug it in again
after more than 5 minutes.

.  If this operation manual does not answer

Sharp Electronics Corporation
1-888-GO-SHARP (1-888-467-4277)
lcdsupport@sharpsec.com
http://www.sharp-usa.com

Sharp Electronics of Canada Ltd.
(905) 568-7140
http://www.sharp.ca

Sharp Electronics Corporation Mexico
Branch
(525) 716-9000
http://www.sharp.com.mx

Sharp Electronics Corp. Latin American
Group
(305) 264-2277
www.servicio@sharpsec.com
http://www.siempresharp.com

Sharp Electronics (Europe) GMBH
01805-234675
http://www.sharp.de

Sharp Electronics (U.K.) Ltd.
08705 274 277
custinfo@sharp-uk.co.uk
http://www.sharp.co.uk

Sharp Electronics (Italy) S.P.A.
(39) 02-89595-1
http://www.sharp.it

Sharp Electronics France
01 49 90 35 40
hotlineced@sef.sharp-eu.com
http://www.sharp.fr

Sharp Electronica Espana, S.A.
93 5819700
sharplcd@sees.sharp-eu.com
http://www.sharp.es

Sharp Electronics (Schweiz) AG
0041 1 846 63 11
cattaneo@sez.sharp-eu.com
http://www.sharp.ch

Sharp Electronics ( Nordic ) AB
(46) 8 6343600
vision.support@sen.sharp-eu.com
http://www.sharp.se

Sharp Electronics Austria (Ges.m.b.H.)
0043 1 727 19 123
pogats@sea.sharp-eu.com
http://www.sharp.at

SHARP Electronics Benelux BV
0900-SHARPCE (0900-7427723)
Nederland
9900-0159 Belgium
http://www.sharp.nl
http://www.sharp.be
http://www.sharp.lu

Sharp Corporation of Australia
Pty. Ltd.
1300-135-022
http://www.sharp.net.au

Sharp Corporation of New Zealand
(09) 634-2059, (09) 636-6972
http://www.sharp.net.nz

Sharp-Roxy Sales (S) Pte. Ltd.
65-226-6556
ckng@srs.global.sharp.co.jp
http://www.sharp.com.sg

Sharp-Roxy (HK) Ltd.
(852) 2410-2623
dcmktg@srh.global.sharp.co.jp
http://www.sharp.com.hk

Sharp Corporation (Taiwan)
0800-025111
http://www.sharp-scot.com.tw

Sharp-Roxy Sales & Service Co.
(60) 3-5125678

Sharp Middle East Fze
971-4-81-5311
helpdesk@smef.global.sharp.co.jp

Sharp Thebnakorn Co. Ltd.
02-236-0170
svc@stcl.global.sharp.co.jp
http://www.sharp-th.com

Sharp Electronics Incorporated of
Korea
(82) 2-3660-2002
lcd@sharp-korea.co.kr
http://www.sharpkorea.co.kr

Sharp Business Systems (India)
Limited
(91) 11- 6431313
service@sharp-oa.com