AL1951 Service Guide
Page 8
Table Of Contents Chapter 1 Monitor Features Introduction Electrical Requirements LCD Monitor General Specification LCD Panel Specification Block Diagram Main Board Diagram Software Flow chart Main Board Layout Front Bezel Rear Bezel Adjusting the picture LOGO Chapter 2 Machine ...Disassembly Chapter 3 Troubleshooting Chapter 4 Connector Information Chapter 5 FRU (Field Replacement Unit) List Exploded Diagram Chapter 6 Schematic Diagram Top Power Input Scaler Panel interface Mpu Adapter Board Inverter Board 9 10 12 11 12 14 15 16 17 19 21 22 26 27 32 38 39 40 44 44...
Table Of Contents Chapter 1 Monitor Features Introduction Electrical Requirements LCD Monitor General Specification LCD Panel Specification Block Diagram Main Board Diagram Software Flow chart Main Board Layout Front Bezel Rear Bezel Adjusting the picture LOGO Chapter 2 Machine ...Disassembly Chapter 3 Troubleshooting Chapter 4 Connector Information Chapter 5 FRU (Field Replacement Unit) List Exploded Diagram Chapter 6 Schematic Diagram Top Power Input Scaler Panel interface Mpu Adapter Board Inverter Board 9 10 12 11 12 14 15 16 17 19 21 22 26 27 32 38 39 40 44 44...
AL1951 Service Guide
Page 9
There is designed with the latest LCD technology to provide a performance oriented product with OSD control to drive a pair of AL1951 Panel Signal Interface Sync Type Color Temp User Adjust DDC Speaker Headphone Jack Microphone Jack USB Hub Tilt / Swivel 19" SEC LTM190EX-L01 D-SUB DVI Separate / ...
There is designed with the latest LCD technology to provide a performance oriented product with OSD control to drive a pair of AL1951 Panel Signal Interface Sync Type Color Temp User Adjust DDC Speaker Headphone Jack Microphone Jack USB Hub Tilt / Swivel 19" SEC LTM190EX-L01 D-SUB DVI Separate / ...
AL1951 Service Guide
Page 12
LCD Panel Specification LCD Panel Model (SAMSUNG LTM190EX- L01) Display Type active matrix color TFT LCD Resolution 1280x1024 pixels Display Dot 1280x (RGB) x 1024 Display Area 376.32mm(H) x 301.056mm(V) Pixel Pitch 0.294mm(H) x 0.294mm(V) Display Color 16.7M (true) Lamp Frequency 80kHz (Max) Lamp Current 8.0 mArms (Max) Weight 2250g (Max) Optical Specifications IL = 6.5mArms Ta = 25 2¢C VDD = 5V FV = 60Hz FDCLK = 54MHz 12
LCD Panel Specification LCD Panel Model (SAMSUNG LTM190EX- L01) Display Type active matrix color TFT LCD Resolution 1280x1024 pixels Display Dot 1280x (RGB) x 1024 Display Area 376.32mm(H) x 301.056mm(V) Pixel Pitch 0.294mm(H) x 0.294mm(V) Display Color 16.7M (true) Lamp Frequency 80kHz (Max) Lamp Current 8.0 mArms (Max) Weight 2250g (Max) Optical Specifications IL = 6.5mArms Ta = 25 2¢C VDD = 5V FV = 60Hz FDCLK = 54MHz 12
AL1951 Service Guide
Page 15
CCFL Drive. Flat Panel and CCFL backlight Inverter board Adapter AC-IN 100V-240V Main Board (Include: Audio board, keyboard) RS232 Connector For white balance adjustment in factory mode HOST Computer Video signal, DDC 15 The Inverter board will provide the 12V DC-power to inverter/power board and main board. The adapter will drive the backlight of panel. Monitor Block Diagram The LCD MONITOR will contain a main board (include: keypad board and audio board), an inverter board, adapter which house the flat panel control logic, brightness control logic and DDC.
CCFL Drive. Flat Panel and CCFL backlight Inverter board Adapter AC-IN 100V-240V Main Board (Include: Audio board, keyboard) RS232 Connector For white balance adjustment in factory mode HOST Computer Video signal, DDC 15 The Inverter board will provide the 12V DC-power to inverter/power board and main board. The adapter will drive the backlight of panel. Monitor Block Diagram The LCD MONITOR will contain a main board (include: keypad board and audio board), an inverter board, adapter which house the flat panel control logic, brightness control logic and DDC.
AL1951 Service Guide
Page 17
.... Is the power key pressed? 10 N Y N 12 Y 11 13 N Y 14 15 N 16 Y 17 18 N 19 Y 17 Check the pin PANEL1 and PANEL2 to tell which panel to get with it to show the coming from eeprom. Scalar initializes. 10) In standby mode? 11) Update the lifetime of brightness from analog or...
.... Is the power key pressed? 10 N Y N 12 Y 11 13 N Y 14 15 N 16 Y 17 18 N 19 Y 17 Check the pin PANEL1 and PANEL2 to tell which panel to get with it to show the coming from eeprom. Scalar initializes. 10) In standby mode? 11) Update the lifetime of brightness from analog or...
AL1951 Service Guide
Page 34
3. Panel Power Circuit Measure Q703 base is normal NG Replace X402 OK Replace U402 NG Replace U401 34 Check Correspondent component. NG OK Replace PANEL X402 oscillate waveform is high level? OK NG Check Q703 and Q704 are broken or CN503 solder?
3. Panel Power Circuit Measure Q703 base is normal NG Replace X402 OK Replace U402 NG Replace U401 34 Check Correspondent component. NG OK Replace PANEL X402 oscillate waveform is high level? OK NG Check Q703 and Q704 are broken or CN503 solder?
AL1951 Service Guide
Page 44
... AdjBACKLITE VLCD 4.SCALER SCHEMATIC VCC1.8 VCC3.3 VAA1 VAA2 VAA3 VAA4 VCC1.8 VCC3.3 VAA1 VAA2 VAA3 VAA4 PA[0..9] PB[0..9] PA[0..9] PB[0..9] B5 PA[0..9] PB[0..9] VLCD VLCD 5.PANEL INTERFACE Title Size B Date: TSU56AK FOR ACER Document Number TOP Wednesday, January 19, 2005 Sheet 2 Rev D of 8 44
... AdjBACKLITE VLCD 4.SCALER SCHEMATIC VCC1.8 VCC3.3 VAA1 VAA2 VAA3 VAA4 VCC1.8 VCC3.3 VAA1 VAA2 VAA3 VAA4 PA[0..9] PB[0..9] PA[0..9] PB[0..9] B5 PA[0..9] PB[0..9] VLCD VLCD 5.PANEL INTERFACE Title Size B Date: TSU56AK FOR ACER Document Number TOP Wednesday, January 19, 2005 Sheet 2 Rev D of 8 44
AL1951 Service Guide
Page 48
...+ RXEC+ RXE3+ LVB0P LVB1P LVB2P LVBCKP LVB3P LVA0P LVA1P LVA2P LVACKP LVA3P CONN VLCD VLCD 3 C448 + 47uF/16V C446 0.1uF C447 0.1uF Title TSU56AK FOR ACER Size Document Number A PANEL INTERFACE Date: Wednesday, January 19, 2005 Sheet 6 Rev D of 8 48
...+ RXEC+ RXE3+ LVB0P LVB1P LVB2P LVBCKP LVB3P LVA0P LVA1P LVA2P LVACKP LVA3P CONN VLCD VLCD 3 C448 + 47uF/16V C446 0.1uF C447 0.1uF Title TSU56AK FOR ACER Size Document Number A PANEL INTERFACE Date: Wednesday, January 19, 2005 Sheet 6 Rev D of 8 48
AL1951 User's Guide
Page 8
The power indicator will light up. Figure 3 External Control Button EXTERNAL CONTROLS 1. >/ Volume 2. OPERATING INSTRUCTIONS GENERAL INSTRUCTIONS Press the power button to turn the monitor on the monitor position. By changing these settings, the picture can be adjusted to your personal preferences. • The power cord should be connected. • Connect the video cable from the monitor to the video card. • Press the power button to turn on or off. The other control buttons are located at front panel of the monitor (See Figure 3).
The power indicator will light up. Figure 3 External Control Button EXTERNAL CONTROLS 1. >/ Volume 2. OPERATING INSTRUCTIONS GENERAL INSTRUCTIONS Press the power button to turn the monitor on the monitor position. By changing these settings, the picture can be adjusted to your personal preferences. • The power cord should be connected. • Connect the video cable from the monitor to the video card. • Press the power button to turn on or off. The other control buttons are located at front panel of the monitor (See Figure 3).
AL1951 User's Guide
Page 9
...; Auto Adjust button / Exit: 1. Orange - Power off status, press this button for 2 seconds to set the HPos, VPos, Clock and Focus. Power On mode. FRONT PANEL CONTROL • Power Button: Press this button to ship your monitor. • For maximum protection, repackage your monitor as it was originally packed at the...
...; Auto Adjust button / Exit: 1. Orange - Power off status, press this button for 2 seconds to set the HPos, VPos, Clock and Focus. Power On mode. FRONT PANEL CONTROL • Power Button: Press this button to ship your monitor. • For maximum protection, repackage your monitor as it was originally packed at the...
AL1951 User's Guide
Page 17
W.) 5.4kg Unit (net) 16 APPENDIX SPECIFICATIONS Driving system TFT Color LCD LCD Panel Size 48cm(19") Pixel pitch 0.294mm( H )x 0.294mm( V ) Brightness 300cd/m2 (Typical) Contrast 700:1(Typical) Viewable angle 150° (H) 135° (V) Response time 8ms Video R,G,B Analog ...
W.) 5.4kg Unit (net) 16 APPENDIX SPECIFICATIONS Driving system TFT Color LCD LCD Panel Size 48cm(19") Pixel pitch 0.294mm( H )x 0.294mm( V ) Brightness 300cd/m2 (Typical) Contrast 700:1(Typical) Viewable angle 150° (H) 135° (V) Response time 8ms Video R,G,B Analog ...