AL1951 Service Guide
Page 6
...shall be used for ventilation. Never spill liquids on the label. The wall socket shall be installed near water, e.g. Precautions Do not use an adapter to ground the appliance safely. Do not place the monitor near a bathtub, washbowl, kitchen sink, laundry tub, swimming pool or in the ...monitor. This will fit only into the slot on a wall or shelf, use a mounting kit approved by the manufacturer or sold with the attached power adapter (output 12V DC) which have appropriate configured receptacles marked between 100 - 240V AC, Min. 3.5A. Do not place the monitor in fire or...
...shall be used for ventilation. Never spill liquids on the label. The wall socket shall be installed near water, e.g. Precautions Do not use an adapter to ground the appliance safely. Do not place the monitor near a bathtub, washbowl, kitchen sink, laundry tub, swimming pool or in the ...monitor. This will fit only into the slot on a wall or shelf, use a mounting kit approved by the manufacturer or sold with the attached power adapter (output 12V DC) which have appropriate configured receptacles marked between 100 - 240V AC, Min. 3.5A. Do not place the monitor in fire or...
AL1951 Service Guide
Page 8
... 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 45...
... 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 45...
AL1951 Service Guide
Page 15
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. CCFL Drive. 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.
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. CCFL Drive. 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 32
NG OK Replace U702 NG X402 oscillate waveform is normal NG Measure 12V input voltage OK NG Check the adapter section Measure U702 PIN2=5V? No power No power Press power key and look if the picture is normal NG Replace X402 OK Replace U402 NG Replace U401 32 Chapter 3 Troubleshooting This chapter provides troubleshooting information for the AL1951: 1.
NG OK Replace U702 NG X402 oscillate waveform is normal NG Measure 12V input voltage OK NG Check the adapter section Measure U702 PIN2=5V? No power No power Press power key and look if the picture is normal NG Replace X402 OK Replace U402 NG Replace U401 32 Chapter 3 Troubleshooting This chapter provides troubleshooting information for the AL1951: 1.
AL1951 User's Guide
Page 3
...stand recommended by yourself; z The monitor is provided. z Unplug the unit during a lightening storm or when it can injure a person and cause serious damage to power surges. If you are provided for long period of time. Never spill liquids on a bed, sofa, rug, or similar surface. PRECAUTIONS z Do not use ... to service the monitor by the manufacturer or sold with a third (grounding) pin. z To ensure satisfactory operation, use the monitor only with the attached power adapter (Output 12Vdc) which have appropriate configured receptacles marked between 100 - 240V AC, Min. 5A.
...stand recommended by yourself; z The monitor is provided. z Unplug the unit during a lightening storm or when it can injure a person and cause serious damage to power surges. If you are provided for long period of time. Never spill liquids on a bed, sofa, rug, or similar surface. PRECAUTIONS z Do not use ... to service the monitor by the manufacturer or sold with a third (grounding) pin. z To ensure satisfactory operation, use the monitor only with the attached power adapter (Output 12Vdc) which have appropriate configured receptacles marked between 100 - 240V AC, Min. 5A.
AL1951 User's Guide
Page 4
...package should include the following symptoms are normal with LCD monitor and do not indicate a problem. Power Cord 4. In this case, the screen is recovered slowly by changing the image or turning off the Power Switch and then turn it on again to the nature of 99.99% or more. BEFORE... YOU OPERATE THE MONITOR FEATURES • 48cm(19") TFT Color LCD Monitor • Crisp, Clear Display for hours. Owner's Manual 3. DVI Cable (only Dual-Input Model) 7. External Adapter 5. 15-pin D-...
...package should include the following symptoms are normal with LCD monitor and do not indicate a problem. Power Cord 4. In this case, the screen is recovered slowly by changing the image or turning off the Power Switch and then turn it on again to the nature of 99.99% or more. BEFORE... YOU OPERATE THE MONITOR FEATURES • 48cm(19") TFT Color LCD Monitor • Crisp, Clear Display for hours. Owner's Manual 3. DVI Cable (only Dual-Input Model) 7. External Adapter 5. 15-pin D-...
AL1951 User's Guide
Page 6
... cable 5 D-SUB Cable 2. Plug the other end to the DC-In port on your monitor into the power adapter. 6. Connect the power adapter dc cable to the computer's DVI port. 4. Connect one end of the 15-pin D-Sub cable to the back of the monitor and connect the ... cable to the back of the monitor and connect the other end of the power cord into a nearby outlet. DC-Jack Power Cable 3. Plug the power cable of the monitor. 2. Turn on the back of your monitor and computer. AC Power Cord 4. CONTROLS AND CONNECTORS CABLE CONNECTIONS Turn off your computer before performing the...
... cable 5 D-SUB Cable 2. Plug the other end to the DC-In port on your monitor into the power adapter. 6. Connect the power adapter dc cable to the computer's DVI port. 4. Connect one end of the 15-pin D-Sub cable to the back of the monitor and connect the ... cable to the back of the monitor and connect the other end of the power cord into a nearby outlet. DC-Jack Power Cable 3. Plug the power cable of the monitor. 2. Turn on the back of your monitor and computer. AC Power Cord 4. CONTROLS AND CONNECTORS CABLE CONNECTIONS Turn off your computer before performing the...