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GH17ES Schematic ( PDF Datasheet ) - Samsung

Teilenummer GH17ES
Beschreibung TFT-LCD MONITOR Service Manual
Hersteller Samsung
Logo Samsung Logo 




Gesamt 30 Seiten
GH17ES Datasheet, Funktion
TFT-LCD MONITOR
GH17LS
GH17ES
SERVICE Manual
TFT-LCD MONITOR
CONTENTS
1. Precautions
2. Product Specifications
3. Disassembly & Reassembly
4. Alignments & Adjustments
5. Troubleshooting
6. Exploded View & Parts List
7. Electrical Parts List
8. Block Diagram
9. Wiring Diagram
10. Schematic Diagrams
11. Panel Description






GH17ES Datasheet, Funktion
2 Product Specifications
2-1 Specifications
Item
LCD Panel
Scanning Frequency
Display Colors
Maximum Resolution
Input Video Signal
Input Sync Signal
Maximum Pixel Clock rate
Active Display
Horizontal/Vertical
AC power voltage & Frequency
Power Consumption
Dimensions
Unit (W x D x H)
Carton (W x D x H)
Weight (Net/Gross)
Environmental Considerations
Description
GH17LS
GH17ES
TFT-LCD panel, RGB vertical stripe, normally black transmissive,
17-Inch viewable, 0.264 (H) x 0.264 (V) mm pixel pitch
Horizontal : 30 kHz ~ 81 kHz (Automatic)
Vertical : 56 Hz ~ 85 Hz (~XGA), 76 Hz (SXGA); GH17ES Vertical : 56 Hz ~ 76 Hz; GH17LS
16,7 Million colors
Horizontal : 1280 Pixels
Vertical : 1024 Pixels
Analog, 0.714 Vp-p ± 5% positive at 75 ,
internally terminated
Type : Seperate H/V sync, Composite H/V, Sync-on-Green
Level : TTL level (V high 2.0 V, V low 0.8 V), Sync-on-Green (–0.25 V)
135 MHz
338 ± 3 mm/270 ± 3 mm
AC 90 ~ 264 Volts, 60/50 Hz ± 3 Hz
42 W (max), 40W (normal)
17.5 x 18.0 x 8.2 Inches (444 x 457 x 208.4 mm)
20.7 x 10.7 x 20.9 Inches (527 x 271 x 532 mm)
5.4 kg (11.9 lbs) / 7.9 kg (17.4 lbs)
5.8 kg (12.8 lbs) / 8.3 kg (18.3 lbs)
Operating Temperature : 50°F ~ 104°F (10°C ~ 35°C)
Humidity : 10 % ~ 80 %
Storage Temperature : -68°F ~ 113°F (-20°C ~ 45°C)
Humidity : 5 % ~ 95 %
• GH17LS/GH17ES comply with SWEDAC (MPRII) recommendations for reduced electromagnetic fields.
• Designs and specifications are subject to change without prior notice.
GH17LS/GH17ES
2-1

6 Page









GH17ES pdf, datenblatt
4 Alignments and Adjustments
This section of the service manual explains how to use the RS232 JIG.
This function is needed when AD Board Change and program memory (IC110) change.
4-1 Required Equipment
The following equipment is necessary for
adjusting the monitor:
• Computer with Windows 95 R , Windows 98 R ,
or Windows NT R .
• RS232 JIG.
4-2 RS232 Jig Setup
1. Install Hyper Terminal program from
windows system.
2. Configure Baud rate to 19200, select
appropriate COM port.
3. Make the Hardware setup as per
figure shown.
RS232
JIG
Serial cable
PC
Power
Adapter
AD
Board
Power
cable
Function
Board
Figure 4-1.
4. Establish the connection by selecting
“Connect” from hyper Terminal.
5. Power on the board, now you see messages in
the application window.
If no messages than check for 1, 2 and 3 again.
Message :
Gogh 17*** fw. copyright (c) 2000, 2001 Sage.
Date : ****. **. **.
Chip ID : b1.
Panel : Samsung 17 SXGA.
4-3 Changing Board
Before replacing the AD Board, read all Panel
information data by using RS232 JIG and hyper
terminal.
1. Type character `B`.
Service Menu for Gogh 17 Model.
1. Read.
2. Modify upper Back Light Value.
3. Modify Lower back Light Value.
4. Modify Panel On Time Value.
5. Exit Service Menu
Enter 1
Upper Backlight Time Expired (in hours) : ***
Lower Backlight Time Expired (in hours) : ***
Panel On Time (in hours) : ***
Please note down these values. Than change to
new board. Execute the command `B`, read the
values. You will see these are set to default
values. Change the values to the recorded
values. Exit the service menu by `B` command.
2. Color Auto Adjustment
After function `1`. Assemble the monitor.
And display 16-Gray pattern or black and white
mixed pattern. Then push “Exit”, “-” and “+”
key of function same time.
During normal execution of Auto Algorithm
the screen image may changed.
4-4 Program memory (IC110) change
Follow same method as changing Board (4-3).
GH17LS/GH17ES
4-1

12 Page





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