CAUTION:
Before servicing this chassis, it is important that the service technician read the "Safety
Precautions" and "Product Safety Notices" in this service manual.
ATTENTION:
Avant d'effectuer l'entretien du châassis, le technicien doit lire les «Précautions de sécurité»
et les «Notices de sécurité du produit» présentés dans le présent manuel.
VORSICHT:
Vor Öffnen des Gehäuses hat der Service-Ingenieur die ,,Sicherheitshinweise" und ,,Hinweise
zur Produktsicherheit" in diesem Wartungshandbuch zu lesen.
SERVICE MANUAL
MANUEL D'ENTRETIEN
WARTUNGSHANDBUCH
Data
contained
within
this
Service
manual is subject to alteration for
improvement.
Les données fournies dans le présent
manuel d'entretien peuvent faire l'objet
de modifications en vue de perfectionner
le produit.
Die
in
diesem
Wartungshandbuch
enthaltenen Spezifikationen können sich
zwecks Verbesserungen ändern.
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
LCD MONITOR
July 2002
No. 0534
CML200UXWB
2
TABLE OF CONTENTS
1. Precaution and Notices ..........................................................
3
1.1 Safety Precaution ...........................................................
3
1.2 Product Safety Notice ......................................................
3
1.3 Service Notes ................................................................
3
2. Specifications ......................................................................
4
2.1 Monitor Specifications ...................................................... 5
2.2 Timing Supported Analog Inputs .......................................
5
2.2 Timing Supported Digital Inputs ........................................
6
3. Adjusting Your Display ............................................................
7
4. Disassembly Instructions ........................................................
8
5. General Connection and Applications .........................................
11
5.1 Connecting the Monitor to the Computer ................................
11
6. Electronic Circuit Description ..................................................
13
7. Electronic Block Diagram .......................................................
14
8. Troubleshooting Flow Chart....................................................
15
Appendix A. PCB Circuit
Appendix B. PCB Layout
Appendix C. Parts Lists
Appendix D. Mechanical Disassembly
3
1. Precautions and Notices
1.1 Safety Precautions
Although LCD monitors are displays without high voltage as that in the CRTs, the
following precautions still should be take care of.
1) Observe all cautions and safety related notes located inside the display cabinet and on
the display chassis.
2) Operation of these displays outside the cabinet or with the cover removed involves a
shock hazard from the display backlight's inverter. Work on the display should not be
attempted by anyone who is not thoroughly familiar with precautions necessary when
working on high voltage equipment.
3) Before returning a serviced display to the customer, a thorough safety test must be
performed to verify that the display is safe to operate without danger or shock.
1.2 Product Safety Notice
1) Many electrical and mechanical parts in this chassis provide special visual safety
protection. The protection afforded by them cannot necessarily be obtained by using
replacement components rated for higher voltage, wattage, etc.
2) Before replacing any of these components, read the parts list manual carefully. The use
of substitute replacement parts, which do not have the same safety characteristics, as
specified in the parts list may create shock, fire or other hazards.
1.3 Service Notes
1) When replacing parts or circuit boards, wrap the wires around terminals before
soldering.
2) Keep wires away from high temperature components.
3) Keep cable and their shielding in their original position so as to reduce interference.
4
2. Specifications
2.1 Monitor Specification
LCD Module
20.1-in, active matrix TFT, anti-glare coating, 0.255 mm pixel pitch
Display Size
408 mm x 306 mm
Viewing Angle
Left/Right
Up/Down
85
° / 85°(Typical)
85
° /85°(Typical)
Luminance
Contrast Ratio
250 cd/m
2 (Typical)
500 : 1 (Typical)
Display Colors
16.7 million
Power Input
100 ~ 240 V
AC Full Range, 50/60 Hz (External AC adapter)
Maximum power
consumption
< 70W
Signal Input
Video Signal
Sync signals
Analog:RGB positive 0.7V
PP, 75ohm
Separate & Composite, TTL Level
Digital:TMDS 0.3Vp-p differential
Line (horizontal)
frequency
Analog:31.5 kHz ~ 80 kHz
/
Digital :31.5kHz ~ 75kHz
Raster (vertical)
frequency
Analog:56 Hz ~ 75 Hz
/
Digital :60Hz~75Hz
Pixel dot clock
162 MHz (maximum)
Recommended mode 1600 x 1200 @ 60 Hz
Pedestal tilt
15
° forward, -5°backward
Pedestal swivel
45
° right ,45° left
Dimensions
(W x H x D)
494 x 448 x 224 mm (without speaker)
Weight
11 kg
Operating Conditions
Temperature
Humidity
Altitude
5
° ~ 40°C at altitude 0 ~ 2000m
5
° ~ 30°C at altitude 2000 ~ 3000m
20% ~ 85% RH, non-condensing
3000m Max.
Storage Conditions
Temperature
Humidity
-20
° ~ 60°C
5% ~ 85% RH
5
Altitude
10000m Max.
2.2
Analog Inputs
Mode
No.
Mode Name
Resolution
H.Freq.(KHZ)
V.Freq.(HZ)
H. Polarity
V. Polarity
Pixel
CLK
(MHZ)
1
VGA 60HZ
640*480
31.469
59.941
25.175
2
VGA 72HZ
640*480
37.804
72.81
31.5
3
VGA 75HZ
640*480
37.5
75.0
31.5
4
SVGA 56HZ
800*600
35.156
56.25
36.0
5
SVGA 60HZ
800*600
37.879
60.317
40.0
6
SVGA 72HZ
800*600
48.077
72.188
50.0
7
SVGA 75HZ
800*600
46.875
75.0
49.5
8
XGA 60HZ
1024*768
48.363
60.004
65.0
9
XGA 70HZ
1024*768
56.476
70.069
75.0
10
XGA 75HZ
1024*768
60.023
75.029
78.75
11
SXGA 60HZ
1280*1024
63.981
60.020
108
12
SXGA 75HZ
1280*1024
79.976
75.025
135
13
UXGA 60Hz
1600 * 1200
75.0
60
162
14
MAC SVGA
640*480
35.0
66.667
30.24
15
MAC SVGA
832*624
493725
74.550
57.283
16
US TEXT
720*400
31.469
70.087
28.322