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TFT-LCD MONITOR
1503FP




SERVICE Manual
TFT-LCD MONITOR CONTENTS
1. Precautions

2. Product Specifications

3. Disassembly & Reassembly

4. Troubleshooting

5. Exploded View & Parts List

6. Electrical Parts List

7. Block Diagram

8. Wiring Diagram

9. Schematic Diagrams
9 Schematic Diagrams
9-1 Scaler Part Schematic Diagram




MINUS_KEY

DOWN_KEY
MENU_KEY
AUTO_KEY


PLUS_KEY
SEL_KEY



UP_KEY
AVDD_3.3 AVDD_2.5 DVDD_2.5 DVDD_3.3
12 R301, R302


DVDD_3.3



DBR(7:0)

12

13 Rx2+
Rx2-
Rx1+ DBG(7:0)
Rx1-
14 Rx0+
Rx0- 13 R303, R304
RxC+
RxC-

15 AVDD_3.3
DBB(7:0)




DCLK
DHS
BLU+ DVS
DEN
GRN+ DAR(7:0)
RED+

A_H*V_SYNC
A_V_SYNC
14 R305, R306

DAG(7:0)


PVDD_3.3



DAB(7:0)




15 R307, R308
DDDC_SCL
DDDC_SDA
HCLK
HFS



DVDD_3.3




DVDD_3.3


*IRQ
*IRQIN FSADDR(13:0)
*RESET



FSADDR(13:0)


DVDD_2.5
+2.5V_D




+3.3V_D DVDD_3.3 +2.5V_A AVDD_2.5




+3.3V_A AVDD_3.3 +3.3V_P PVDD_3.3




1503FP 9-1
9 Schematic Diagrams


9-2 MCU Part Schematic Diagram

+5V_M




*IRQ

HFS
HCLK
HDATA(3:0)



D(7:0)




A(16)
RESET
RXD
TXD ALE
*PSEN
PWR_SW
SDA
SCL A(15:8)

CHK_DSUB
CHK_DVI

*RESET
RESET



+5V_M




+5V_M



A(15)
A(16)
BANK




+5V_M
A(15)



BANK
+5V_M




+5V +5V_M




9-2 1503FP
9 Schematic Diagrams


9-3 LCD Output Part Schematic Diagram

LVDS_3.3 8 IC401 #45, 46 1 IC401 #31




9 IC401 #47, 48 2 IC401 #30

9 PANEL_3.3
8
DAR(7:0)
7
6

DAG(7:0)
3 IC401 #28

5

DAB(7:0)

1

4 4 IC401 #27

3
DHS 2
DVS
DEN
DCLK
LVDS_EN

PANEL_3.3 5 IC401 #37, 38




6 IC401 #39, 40




7 IC401 #41, 42




1503FP 9-3
9 Schematic Diagrams


9-4 Video Input Part Schematic Diagram


10 IC510 #4

RED+
GRN+
BLU+
A_H*V_SYNC
A_V_SYNC
Rx2+
Rx2-
Rx1+
Rx1-
11 R211
Rx0+
Rx0-
11 RxC+
RxC-
+5V




ADDC_DATA CHK_DVI
ADDC_CLK

+5V




DDDC_SCL
DDDC_SDA




CHK_DSUB 10




+5V




BRIGHT
LVDS_EN
PANEL_EN
D_LED
A_LED
LED_RED
LED_GRN
BKLT_EN
+5V


Power Function


+5V
SEL_KEY
AUTO_KEY Menu Function
PWR_SW

DOWN_KEY
A_LED MENU_KEY
PLUS_KEY
D_LED
MINUS_KEY
LED_RED UP_KEY

LED_GRN




9-4 1503FP
9 Schematic Diagrams


9-5 Power Part Schematic Diagram

+12V_INV +12V
+5V +12V


+12V




+5V +3.3V_P




+5V
+2.5V_A
+3.3V_D




+2.5V_D +3.3V_A




+3.3V
LVDS_3.3 PANEL_3.3




LVDS_EN




PANEL_EN




1503FP 9-5
9 Schematic Diagrams



9-6 Function Part Schematic Diagram




9-6 1503FP
Samsung Electronics Co., Ltd. November 2000
Printed in Korea
P/N :BN68-00175B-01