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PDF ( 数据手册 , 数据表 ) GH17LS

零件编号 GH17LS
描述 TFT-LCD MONITOR Service Manual
制造商 Samsung
LOGO Samsung LOGO 


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GH17LS 数据手册, 描述, 功能
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







GH17LS pdf, 数据表
2-3 Timing Chart
2 Product Specifications
This section of the service manual describes the timing that the computer industry recognizes as standard
for computer-generated video signals.
Table 2-1. Timing Chart
Mode
IBM
VESA
Timing
VGA2/
70 Hz
VGA3/
60 Hz
640/75 Hz 640/85 Hz 800/75 Hz 800/85 Hz 1024/60Hz 1024/75Hz 1024/85Hz 1280/76Hz 1280/75Hz
720 x 400
640 x 480
640 x 480
640 x 480
800 x 600
800 x 600 1024 x 768 1024 x 768 1024x768 1280x1024
(Analog Only)
1280x1024
(Analog Only)
fH (kHz) 31.469 31.469 37.500 43.269 46.875 53.674 48.363 60.023 68.677 81.129 79.976
A µsec 31.777 31.778 26.667 23.111 21.333 18.631 20.677 16.660 14.561 16.640 12.504
B µsec 3.813 3.813 2.032 1.556 1.616 1.138 2.092 1.219 1.016 6.400 1.067
C µsec 1.589 1.589 3.810 2.222 3.232 2.702 2.462 2.235 2.201 2.880 1.837
D µsec 26.058 26.058 20.317 17.778 16.162 14.222 15.754 13.003 10.836
9.481
E µsec 0.318 0.318 0.508 1.556 0.323 0.569 0.369 0.203 0.508 3.200 0.119
fV (Hz) 70.087 59.940 75.000 85.008 75.000 85.061 60.004 75.029 84.997 76.106 75.025
O msec 14.268 16.683 13.333 11.764 13.333 11.756 16.666 13.328 11.765 10.660 13.329
P msec 0.064 0.064 0.080 0.671 0.064 0.056 0.124 0.050 0.044 0.080 0.038
Q msec 0.858 0.794 0.427 0.578 0.448 0.503 0.600 0.466 0.524 3.200 0.475
R msec 13.155 15.761 12.800 11.093 12.800 11.179 15.880 12.795 11.183
12.804
S msec 0.191 0.064 0.027 0.023 0.021 0.019 0.062 0.017 0.015 0.020 0.013
Clock
Freq.
(MHz)
28.322 25.175 31.500
49.500 49.500 56.250 75.000 78.750 94.500 135.000 135.000
Polarity
H.Sync Negative Negative Negative Negative Positive Positive Negative Positive Positive Negative Positive
V.Sync Positive Negative Negative Negative Positive Positive Negative Positive Positive Negative Positive
Remark Separate Separate Separate Separate Separate Separate Separate Separate Separate Com. Separate
Separate Sync
Horizontal
Videeoo
CC
DD E E
Vertical
VViideo
QQ
RR S S
Syncc
BB
AA
SSync
PP
OO
A
Horizontal
B
Green
Horizontal
B
Vertical
H/V Composite Sync
Vertical
P
Q
O
VIDEO
R
Sync-on-Green
PQ
R
O
S
S
A : Line time total
C : Back porch
E : Front porch
B : Horizontal sync width
D : Active time
O : Frame time total
Q : Back porch
S : Front porch
P : Vertical sync width
R : Active time
GH17LS/GH17ES
2-3







GH17LS equivalent, schematic
5-2 No Video
Check signal cable connection and power.
Does the X101 and X201 oscillate properly?
12
Yes
There R, G, B input are at R103, R107 and R108?
Yes
There sync. and data output are
R260, R261, R211, R213, and RA201 ~ RA212?
345
6
Yes
There proper signal input are
Pin 66, 65, 64, and 11 of IC102?
534
6
Yes
Does the output signal appear at
R121 ~ R130 R132, R135, R136, and R138 ~ R144?
7
Yes
There are DC 5V at Pin 1, 2 and 3 of CN102?
Yes
There are DC 12V, DC5V and DC 3.3V at
Pin 10, 11, 12 ; Pin 7 and Pin 4 of CN104?
5 Troubleshooting
No Replace that or
check related circuit.
No
Check input part.
No Please check the power related
IC202 and output part.
No Check IC102 and related circuit.
No Check the LVDS_EN at
R118 is high or not.
Normal state is high.
No Check the Power
and related circuit.
No Please check the Inverter
and related circuit.
GH17LS/GH17ES
5-3










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