SERVICE MANUAL
MANUEL D'ENTRETIEN
WARTUNGSHANDBUCH
CAUTION:
Before servicing this chassis, it is important that the service technician read the “Safety
Precautions” and “Product Safety Notices” in this service manual.
No. 0418
CML170SXWBPlus
Data contained within this Service
manual is subject to alteration for
improvement.
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.
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
A. Main Procedure..............................................................................................20
B. Power Troubleshooting ..................................................................................21
C. Backlight Troubleshooting..............................................................................22
D. Performance Troubleshooting........................................................................23
E. Function Troubleshooting...............................................................................24
APPENDIX A: REPLACEMENT PARTS LISTS ............................25
1. ELECTRICAL REQUIREMENTS
A. LCD Panel Specification
Display: 17 inch (17” viewable image size): active matrix: thin film transistor
(TFT): liquid crystal display (LCD): 0.264 mm dot pitch: RGB
Vertical stripe 200 cd/m
ratio, Min.
2
white luminance, typical: 200:1 contrast
Compatibility:
Synchronisation
Frequencies:
Resolution:
Active Display Area:
Viewing Angles:
640 x 350: VGA-350
720 x 400: VGA text
640 x 400: VGA-GRAPH
640 x 480: VGA, 60Hz to 75 Hz vertical refresh rate
800 x 600: 56Hz to 75 Hz vertical refresh rate
1,024 x 768 non-interlaced: 60Hz to 75 Hz vertical refresh rate
1,280 x 1,024 non-interlaced: 60~75Hz vertical refresh rate
Horizontal: 24~80KHz
Vertical: 56~75Hz
Pixel Frequency: 25~135 MHz
Horizontal: 1,280 dots
Vertical: 1,024 lines
Horizontal: 337.92 mm
Vertical: 270.34 mm
Up 40º, Down 80º (typical)
Display Colours:
Power Supply:
Power
Consumption:
Environmental:
Left 60º, Right 80º (typical)
CR ≥ 10
16,777,216 (with FRC)
AC 100 to 240V worldwide input, 50/60Hz
Typical: 50W on mode +10 / -25%
Operating temperature: 0~50ºC
Storage temperature: -20~65ºC
Relative Humidity: 20~80%
1
B. CONTROLS
B-1 Control Panel (Monitor Front Panel)
1. Power LED.
2. Adjust decrease.
3. Adjust increase.
4. Function select anti-clockwise.
5. Function select clockwise.
6. Power ON/OFF switch, push to ON and push to OFF. (Toggle switch)
7. Ear-phone jack.
8. Volume Control.
C. Power Management
C-1 Power Management
1. Meets VESA DPMS Proposal
2. Power Consumption
Meets VESA DPMS Proposal
On-mode 54 W
Stand-by 5 W
Suspend 5 W
Off-mode 5 W
DC power off 5 W
Disconnection 5 W
Power saving states are measured with speakers attached but not working.
The recovery time from stand-by/suspend/off-mode to on-mode is 3 seconds maximum.
Green
max
Yellow
max
Yellow
max
Yellow
max
Dark
max
max
Dark (DC power off)
Yellow (DC power on)
C-2 Power Consumption
Meets VESA DPMS Proposal
On-mode 54 W
Stand-by 5 W
Suspend 5 W
Off-mode 5 W
DC power off 5 W
Disconnection 5 W
1. Measured from AC input end of AC power adapter.
2. Power saving states are measured with speakers attached but not worked.
If the input timing is not a supported timing listed above but within the supported frequency range
(Horizontal: 80KHz, Vertical: 85Hz), this monitor will select a closest mode instead. However, the
display quality may not be optimised.
3
E. Dot Defects & Audio Specification
E-1 Dot Defects on LCD Panel
Visual
Defect
Electrical
Defect
Foreign Material
Bubble
Scratch
Bright Line
Dark Line
Bright DotNone
Double Bright Dot
Three Bright DotsNone
Dark Dot
Double Dark Dot
Three Dark Dots
Distance of B/D to B/D
Distance of D/D to D/D
0.1=<D=<1.0
D=<1.0
N=<6
0.01=<W=<0.1
0.3=<L=<7
N=<4
0.05=<W=<0.1
0.3=<L=<7
N=<4
N=<2
N=<10
N=<3
N=<1
S>=10mm
S>=5mm
Note:
W : Width (mm)
L :Length (mm)
D :Diameter (mm)
N :Number (pcs)
B/D:Bright Dot
D/D:Dark Dot
E-2 Audio Specifications
Conditions1KHz, volume max, Load 8W speakers x2
Audio Input500mV
Audio Output2x 0.5W
Frequency Response50Hz to 20KHz ±3dB
S/N Ratio-70dB max
Cross Talk-40dB max
Distortion1% max
rms
max
4
2. MAIN / DISPLAY CONTROL BOARD - VL-706
A. Description
The VL-706 display control board is design to directly convert analog RGB signals from a
standard VGA display card to optimum LCD timing signals so as to construct a high display
quality LCD monitor.
B. Features
•
On-board embedded micro-processor to detect display timings and control user
functions.
• Uses Pixelworks design to generate optimum LCD timings.
• Uses EEPROM to memorise every adjusted parameter.
• Supports up to 22 display modes from VGA to SXGA.
• Offers full screen expansion function on non-SXGA mode (automatic).
• Flexible colour temperature selection function including 9300º, 6500º and user mode.
• Supports OSD functions.
• Supports VESA DPMS function.
• Supports DDC1/2B functions.
• Supports 5 languages for OSD description.
• The longest time for mode change is 3 seconds.
C. Block Diagram
5
D. Connector Locations
E. Connector Type
Location Type Maker Number of Pins
CN2 1211-15 E&T 15
CN1 74320-1004 FEMALE 30
CN8 96113-1203 E&T 12
CN3 96113-0513 E&T 5
CN7 96113-1003 E&T 10
CN4 96118-0413 E&T 4
CN5 98210-3011 E&T 30
F. Connector Pin Assignment
F-1 CN2
Pin No. Signal Comment
1 R-Video Red Video Input.
2 G-Video Green Video Input.
3 B-Video Blue Video Input.
4 NC
5 PCDETECT PCDETECT Input.
6 Ground Ground.
7 Ground Ground.
8 Ground Ground
9 5VCC DDC Power Input.
10 Ground Ground.
11 NC
12 SDA DDC 1/2B
13 HS Horizontal Sync Input.
14 VS Vertical Sync Input.
15 SCL DDC 2B
6
F-2 CN5
Terminal No. Symbol Function
28,29,30 VDD 5V POWER SUPPLY
1 TXE0- LVDS EVEN OUTPUT DATA PAIRS
2 TXE0+ LVDS EVEN OUTPUT DATA PAIRS
3 TXE1- LVDS EVEN OUTPUT DATA PAIRS
4 TXE1+ LVDS EVEN OUTPUT DATA PAIRS
5 TXE2- LVDS EVEN OUTPUT DATA PAIRS
6 TXE2+ LVDS EVEN OUTPUT DATA PAIRS
8 TXECLK- LVDS EVEN OUTPUT DATA PAIRS
9 TXECLK+ LVDS EVEN OUTPUT DATA PAIRS
10 TXE3- LVDS EVEN OUTPUT DATA PAIRS
11 TXE3+ LVDS EVEN OUTPUT DATA PAIRS
12 TXO0- LVDS ODD OUTPUT DATA PAIRS
13 TXO0+ LVDS ODD OUTPUT DATA PAIRS
15 TXO1- LVDS ODD OUTPUT DATA PAIRS
16 TXO1+ LVDS ODD OUTPUT DATA PAIRS
18 TXO2- LVDS ODD OUTPUT DATA PAIRS
19 TXO2+ LVDS ODD OUTPUT DATA PAIRS
20 TXOCLK- LVDS ODD OUTPUT DATA PAIRS
21 TXOCLK+ LVDS ODD OUTPUT DATA PAIRS
22 TXO3- LVDS ODD OUTPUT DATA PAIRS
23 TXO3+ LVDS ODD OUTPUT DATA PAIRS
7,14,17,24 GND Ground
25,26,27 GND Ground
F-3 CN1
Pin Signal Assignment Pin Signal Assignment Pin Signal Assignment
3. CONTROL PANEL AND AUDIO CONTROL (KEY BOARD) VK-517
A. Description
The VK-517 is designed to offer a user interfaced control panel that passes and receives signals
to and from VL-706 display control board. Also there is a stereo audio amplifier to drive a pair
of speakers. When in power saving mode, the audio circuit can be turned off by the control
signal from VL-706 board.
B. Connector and Swi t ch Locati ons
8
C. Connector Type
Location Type Maker Number of Pins
J1 96113-1113 E&T 11
J2 SCJ-0348-C SC 9
J3 87502-0200 ACES 2
J4 87502-0200 ACES 2
J5 96113-1013 E&T 10
D. Connector Pin Assignment
D-1 J1
Pin No. Signal Comment
1 VOL Volume ON/OFF control
2 GND GND
3 RIN1 Audio volume adjust line INR
4 LIN1 Audio volume adjust line INL
5 RIN2 Audio volume adjust line OUTR
6 LIN2 Audio volume adjust line OUTL
7 GND GND
8 R-EAR EAR phone out R
9 L-EAR EAR phone out L
10 ROUT Speaker out R
11 LOUT Speaker out L
D-2 J5
Pin No. Signal Comment
1 MUTE Volume ON/OFF control
2 LED-Y Power saving mode.
3 LED-G Monitor on mode.
4,10 GND GND
5 KEY-UP Function select up to VL-706
6 KEY-DOWN Function select down to VL-706
7 KEY-R Function select right to VL-706
8 KEY-L Function select left to VL-706
9 KEY-PWR Power ON/OFF signal to VL-706
9
D-3 J3 and J4
Pin No. Signal Comment
1 GND GND
2 OUTL (OUTR) Speaker Out
D-4 J2
Pin No. Signal I/O Comment
1 GND Ground
2 LI 2 Earphone out L
3 RI 2 Earphone out R
4 LI 1 Earphone out L
5 LO Speaker out L
6 NC Not connected
7 RI 1 Earphone out R
8 RO Speaker out R
D-5 Switch Definition
Location Definition
S1 Power ON/OFF
S2 Function select by clockwise direction
S3 Function select by anti-clockwise direction
S4 Adjust up
S5 Adjust down
D-6 LED Definition
Location Definition
D1 Green for ON-mode; Dark for DC power off; Yellow for stand-by; suspend; off-mode.
D-7 Variable Resistor
VR1: Volume control, clockwise for increasing; anti-clockwise for decreasing
10
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