AL708 Monitor Service Guide
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CONTENTS WARNING A SAFETY PRECAUTIONS B DIMENSIONS 1 GENERAL INFORMATION 2 SPECIFICATIONS 3 THEORY OF OPERATION 4 DISASSEMBLY INSTRUCTIONS 5 CONTROL LOCATION 6 NECESSARY EQUIPMENT LIST 7 BLOCK DIAGRAM 8 CONDUCTOR VIEW 9 SCHEMATIC DIAGRAM 10 TROUBLE SHOOTING HINTS 11 REPLACEMENT PARTS LIST 12 SPARE PARTS LIST 13 L7EA (AL708)
CONTENTS WARNING A SAFETY PRECAUTIONS B DIMENSIONS 1 GENERAL INFORMATION 2 SPECIFICATIONS 3 THEORY OF OPERATION 4 DISASSEMBLY INSTRUCTIONS 5 CONTROL LOCATION 6 NECESSARY EQUIPMENT LIST 7 BLOCK DIAGRAM 8 CONDUCTOR VIEW 9 SCHEMATIC DIAGRAM 10 TROUBLE SHOOTING HINTS 11 REPLACEMENT PARTS LIST 12 SPARE PARTS LIST 13 L7EA (AL708)
AL708 Monitor Service Guide
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... check. 4-2 Connect a 1500 ohm , 10 watt resistor , paralleled by a 0.15uF capacitor between each metallic part and a good earth ground. 4-3 Use an AC voltmeter with all of the high voltage used in the inverter circuit. Because of the following safety checks and servicing guide lines. 2. L7EA (AL708) B SAFETY PRECAUTIONS 1. POWER SUPPLY REQUIREMENTS The external powr converter for this display utilizes AC and DC cords...
... check. 4-2 Connect a 1500 ohm , 10 watt resistor , paralleled by a 0.15uF capacitor between each metallic part and a good earth ground. 4-3 Use an AC voltmeter with all of the high voltage used in the inverter circuit. Because of the following safety checks and servicing guide lines. 2. L7EA (AL708) B SAFETY PRECAUTIONS 1. POWER SUPPLY REQUIREMENTS The external powr converter for this display utilizes AC and DC cords...
AL708 Monitor Service Guide
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... with a fine dot pitch ( Horizontal : 0.264 mm / Vertical : 0.264 mm) 2.8 Superior display performance High contrast : 350 : 1 High brightness : 250 cd / m2 (Typical) Wide view angle : 140 / 100 degrees (H/V) 2.9 Special function VESA DDC2B ( Display Data Channel ) Compatible L7EA (AL708) 2 So VGA640x400, VGA640x480, SVGA800x600, XGA 1024x768, SXGA 1280x1024 mode are user definable. 2.7 Fine dot pitch LCD panel with power saving signal from computer. 2.2 OSD (on screen display) function OSD ( 5 Languages ) function is alive or not...
... with a fine dot pitch ( Horizontal : 0.264 mm / Vertical : 0.264 mm) 2.8 Superior display performance High contrast : 350 : 1 High brightness : 250 cd / m2 (Typical) Wide view angle : 140 / 100 degrees (H/V) 2.9 Special function VESA DDC2B ( Display Data Channel ) Compatible L7EA (AL708) 2 So VGA640x400, VGA640x480, SVGA800x600, XGA 1024x768, SXGA 1280x1024 mode are user definable. 2.7 Fine dot pitch LCD panel with power saving signal from computer. 2.2 OSD (on screen display) function OSD ( 5 Languages ) function is alive or not...
AL708 Monitor Service Guide
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... Data Horizontal Sync 14 VS Vertical Sync 15 SCL DDC Clock L7EA (AL708) 3-1 MECHANICAL SPECIFICATIONS 2.1 Dimension Height : 418 mm ( 16.5") Width : 408 mm ( 16") Depth : 183 mm ( 7.2") 2.2 Net Weight :5.6 kg ( 12.4 lbs) 2.3 Maximum Viewable Area : Diagonal 432 mm (17") 3. Driver bit of the cabinet. 1.3 OSD menu includes the following function. 3. CONTRAST BRIGHTNESS H.POSITION V.POSITION COLOR-TEMPERATURE CLOCK PHASE LANGUAGE VOLUME POWER-ON-RECALL 1.4 CONTRAST and BRIGHTNESS can be directly controlled with...
... Data Horizontal Sync 14 VS Vertical Sync 15 SCL DDC Clock L7EA (AL708) 3-1 MECHANICAL SPECIFICATIONS 2.1 Dimension Height : 418 mm ( 16.5") Width : 408 mm ( 16") Depth : 183 mm ( 7.2") 2.2 Net Weight :5.6 kg ( 12.4 lbs) 2.3 Maximum Viewable Area : Diagonal 432 mm (17") 3. Driver bit of the cabinet. 1.3 OSD menu includes the following function. 3. CONTRAST BRIGHTNESS H.POSITION V.POSITION COLOR-TEMPERATURE CLOCK PHASE LANGUAGE VOLUME POWER-ON-RECALL 1.4 CONTRAST and BRIGHTNESS can be directly controlled with...
AL708 Monitor Service Guide
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....97 State Power Indicator On < 50Watts Green Standby Off < 5 Watts < 5 Watts Amber 5.3 Acceptable timing If your timing is adjusted at the factory using 0,7 Vp-p Video signal. 5.5.2 Sync Signal level H/V Separate : TTL level 5.5.3 Input impedance Video input : 75 ohms Sync input : > 1 k ohms L7EA (AL708) 3-2 5. ELECTRICAL SPECIFICATIONS 5.1 Standard conditions 5.4 Preset Timings Display area Video signal level Contrast Brightness Ambient Input voltage Warming up time Display mode 338 x 270 mm 0.7 Vpp Max. Horizontal: Sync frequency : 30~81 kHz Vertical : Sync frequency : 56~75Hz...
....97 State Power Indicator On < 50Watts Green Standby Off < 5 Watts < 5 Watts Amber 5.3 Acceptable timing If your timing is adjusted at the factory using 0,7 Vp-p Video signal. 5.5.2 Sync Signal level H/V Separate : TTL level 5.5.3 Input impedance Video input : 75 ohms Sync input : > 1 k ohms L7EA (AL708) 3-2 5. ELECTRICAL SPECIFICATIONS 5.1 Standard conditions 5.4 Preset Timings Display area Video signal level Contrast Brightness Ambient Input voltage Warming up time Display mode 338 x 270 mm 0.7 Vpp Max. Horizontal: Sync frequency : 30~81 kHz Vertical : Sync frequency : 56~75Hz...
AL708 Monitor Service Guide
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... cd / m2 at position of lowest brightness 5.7.4 Contrast ratio (CR) Value CR= B / A Conditions Contrast : Maximum B: Full white pattern Brightness : min A: Full black pattern Brightness : max 7.2 EMC standards FCC part 15,subpart B , class-B CE marking 8. OTHERS TUV (Rheinland) ISO13406-II pixel fault class 2 TCO99 9. SIGNAL CABLE Signal cable with Mini D-Sub 15P connectors at both ends. P0WER CORD Northern Hemisphere Version : UL / CSA approved power cord. Length : 1.5 meter. 11...
... cd / m2 at position of lowest brightness 5.7.4 Contrast ratio (CR) Value CR= B / A Conditions Contrast : Maximum B: Full white pattern Brightness : min A: Full black pattern Brightness : max 7.2 EMC standards FCC part 15,subpart B , class-B CE marking 8. OTHERS TUV (Rheinland) ISO13406-II pixel fault class 2 TCO99 9. SIGNAL CABLE Signal cable with Mini D-Sub 15P connectors at both ends. P0WER CORD Northern Hemisphere Version : UL / CSA approved power cord. Length : 1.5 meter. 11...
AL708 Monitor Service Guide
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..., OSD controller and on the board are connected to -digital converters), one for each color (red, green and blue) The analog RGB signals are for inverter, audio and button board .The VGA cable is , it programs the gm2120 and manages other devices in the system such as the keypad, the backlight, LED, audio and non-volatile RAM.using general purpose input/output (GPIO) pins. 4. a) Clock Generation : Crystal Input Clock (TCLK and XTAL). L7EA (AL708...
..., OSD controller and on the board are connected to -digital converters), one for each color (red, green and blue) The analog RGB signals are for inverter, audio and button board .The VGA cable is , it programs the gm2120 and manages other devices in the system such as the keypad, the backlight, LED, audio and non-volatile RAM.using general purpose input/output (GPIO) pins. 4. a) Clock Generation : Crystal Input Clock (TCLK and XTAL). L7EA (AL708...
AL708 Monitor Service Guide
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... GPIO9 Key-Sel 49 GPIO10 Key-Menu 50 GPIO11 No use 207 GPIO19 Key-Power, on / off control 206 GPIO20 Mute , audio disable 4 GPIO21 / IRQn LED-Green 204 GPIO22 / HCLK NV- It supports dual bus / dual port for data bus. L7EA (AL708) 4-2 RAM (U11) SCL 1 GPIO17 No use 208 GPIO18 No use 51 GPIO12 NV- g) Parallel ROM Interface Port (Pin 8~25, Pin28~35) The...
... GPIO9 Key-Sel 49 GPIO10 Key-Menu 50 GPIO11 No use 207 GPIO19 Key-Power, on / off control 206 GPIO20 Mute , audio disable 4 GPIO21 / IRQn LED-Green 204 GPIO22 / HCLK NV- It supports dual bus / dual port for data bus. L7EA (AL708) 4-2 RAM (U11) SCL 1 GPIO17 No use 208 GPIO18 No use 51 GPIO12 NV- g) Parallel ROM Interface Port (Pin 8~25, Pin28~35) The...
AL708 Monitor Service Guide
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... by the DC voltage of pin 8 from a 12 V power supply. 4.1.3 Power Regulator AIC1563 (U12),LT1117 (U5, U6) The AIC1563 is a monolithic control IC containing the primary functions required for DC to an 8 ohms with less than 0.5% (THD) from gm2120 GPIO port. 4.3 Inverter Board This is a specific inverter for L7E monitor backlight which converters 12 Vdc to drive four cold...
... by the DC voltage of pin 8 from a 12 V power supply. 4.1.3 Power Regulator AIC1563 (U12),LT1117 (U5, U6) The AIC1563 is a monolithic control IC containing the primary functions required for DC to an 8 ohms with less than 0.5% (THD) from gm2120 GPIO port. 4.3 Inverter Board This is a specific inverter for L7E monitor backlight which converters 12 Vdc to drive four cold...
AL708 Monitor Service Guide
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ESD cover removal 1) remove four screw "3" 2) remove the ESD cover 3 3 3 3 3. Stand& rear cover removal 1) remove four large screw "1" from 1 the rear cover 1 2) remove the rear cover 3) remove four screw "2" 1 4) remove the stand 2 2 2 2 1 2. 5. DISASSEMBLY INSTRUCTIONS 1. MB board removal 1) remove four screw "4" 2) remove the MB board 4 4 4 4 L7EA (AL708) 5-1
ESD cover removal 1) remove four screw "3" 2) remove the ESD cover 3 3 3 3 3. Stand& rear cover removal 1) remove four large screw "1" from 1 the rear cover 1 2) remove the rear cover 3) remove four screw "2" 1 4) remove the stand 2 2 2 2 1 2. 5. DISASSEMBLY INSTRUCTIONS 1. MB board removal 1) remove four screw "4" 2) remove the MB board 4 4 4 4 L7EA (AL708) 5-1
AL708 Monitor Service Guide
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...; buttons to adjust the contrast of the screen. Press the <l and l> buttons to adjust the brightness of selected To power on -screen operation A. Selected or change function To increase level of selected item To decrease level of the screen. Brightness / Contrast Adjustment Brightness. Maximize the life of on and off L7EA (AL708) 6-1 Contrast. CONTROL LOCATION MENU ↓ ↑ ← → Sel Power Examples of your display by using the lowest brightness setting...
...; buttons to adjust the contrast of the screen. Press the <l and l> buttons to adjust the brightness of selected To power on -screen operation A. Selected or change function To increase level of selected item To decrease level of the screen. Brightness / Contrast Adjustment Brightness. Maximize the life of on and off L7EA (AL708) 6-1 Contrast. CONTROL LOCATION MENU ↓ ↑ ← → Sel Power Examples of your display by using the lowest brightness setting...
AL708 Monitor Service Guide
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... PARTS LIST Part No. Description Remark 1 45LM7AB0008 LM7S AUDIO/B ASSY Audio Board 2 33LM7BB0001 LM7S BUTTON/B ASSY Button Board 3 31L7EMB0007 L7E MB ASSY MB Board 4 AA0170E1003 LCD(TFT) 17" QD170E1LG03 REV:A LCD panel 5 AS022167304 INV MODULE(AMB)LM7S(12V,V=675V,A2A) Inverter 6 AG12042BY21 ADP 12V 4.16A SLS9901B12157 90~264V 3A3A Adapter 7 35L7EFPTN07 L7EA FRONT PANEL ASSY Front panel assembly 8 EAL7E001033 LCD BEZEL-1 L7E(EAL7E001,REV3B) Bezel 9 42L7ESBTN07 L7EA STAND BASE ASSY Stand assembly...
... PARTS LIST Part No. Description Remark 1 45LM7AB0008 LM7S AUDIO/B ASSY Audio Board 2 33LM7BB0001 LM7S BUTTON/B ASSY Button Board 3 31L7EMB0007 L7E MB ASSY MB Board 4 AA0170E1003 LCD(TFT) 17" QD170E1LG03 REV:A LCD panel 5 AS022167304 INV MODULE(AMB)LM7S(12V,V=675V,A2A) Inverter 6 AG12042BY21 ADP 12V 4.16A SLS9901B12157 90~264V 3A3A Adapter 7 35L7EFPTN07 L7EA FRONT PANEL ASSY Front panel assembly 8 EAL7E001033 LCD BEZEL-1 L7E(EAL7E001,REV3B) Bezel 9 42L7ESBTN07 L7EA STAND BASE ASSY Stand assembly...
AL708 User Guide
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Contents Precautions 3 Package Contents 3 Installation Instructions Monitor Installation 4 Monitor Packing 4 Viewing Angle Adjustment 4 Connecting 5 Adjusting Display Setting 6 Troubleshooting 9 General Specifications 10 1
Contents Precautions 3 Package Contents 3 Installation Instructions Monitor Installation 4 Monitor Packing 4 Viewing Angle Adjustment 4 Connecting 5 Adjusting Display Setting 6 Troubleshooting 9 General Specifications 10 1
AL708 User Guide
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... a radiator or heat vents. z Slots and openings on the screen or touch the screen with a mild detergent solution. You will permanently scratch the LCD panel. Liquid could drip inside the display and cause electrical shock. z Do not attempt to clean the monitor housing. Package Contents LCD Monitor Power Cord Power Adapter Audio Cable User Manual VGA Cable 2 Please use a soft, lint-free cloth to service the monitor yourself; opening or removing covers can expose you dangerous voltages and...
... a radiator or heat vents. z Slots and openings on the screen or touch the screen with a mild detergent solution. You will permanently scratch the LCD panel. Liquid could drip inside the display and cause electrical shock. z Do not attempt to clean the monitor housing. Package Contents LCD Monitor Power Cord Power Adapter Audio Cable User Manual VGA Cable 2 Please use a soft, lint-free cloth to service the monitor yourself; opening or removing covers can expose you dangerous voltages and...
AL708 User Guide
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... computer and monitor's power are able to adjust the monitor's angle from -5°á20°. Installation Instructions Monitor Installation: 1. Viewing Angle Adjustment: You are both turned off. This device must be operated with the original power supply part number: LSE9901B1250 of display along the track. Monitor Packing: Important Before you start, make sure there is a clean, flat surface where you can place the display once it's removed from the stand. Connect the stand into the...
... computer and monitor's power are able to adjust the monitor's angle from -5°á20°. Installation Instructions Monitor Installation: 1. Viewing Angle Adjustment: You are both turned off. This device must be operated with the original power supply part number: LSE9901B1250 of display along the track. Monitor Packing: Important Before you start, make sure there is a clean, flat surface where you can place the display once it's removed from the stand. Connect the stand into the...
AL708 User Guide
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.... 3.Audio cable: Connect one end of the audio cable to the audio input of LCD monitor and the other side of signal cable to the VGA output of the graphics card on the computer and tighten the thumbscrews on the backside of the monitor. Power On: First, power-on monitor, then power-on the power button should be green. If the power LED is running, the LED on computer. Plug one end of the power cord into...
.... 3.Audio cable: Connect one end of the audio cable to the audio input of LCD monitor and the other side of signal cable to the VGA output of the graphics card on the computer and tighten the thumbscrews on the backside of the monitor. Power On: First, power-on monitor, then power-on the power button should be green. If the power LED is running, the LED on computer. Plug one end of the power cord into...
AL708 User Guide
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... switch the mute or , to automatically optimize your display's position, clock, phase. 7 POWER Power OFF/ON ; OSD active: Press to enter a selection in OSD 6 SELECT/ AUTO OSD inactive: Press to adjust the volume. Green: ON Orange: Sleep 5 Press again to view the OSD. Adjusting Display Settings 1 2 34567 External Controls 1 OSD Menu Press to exit. OSD active: Press to select or adjust OSD options 3 ARROW OSD inactive: Press 3 once, then ð,ç to adjust the brightness or , to adjust the contrast. OSD...
... switch the mute or , to automatically optimize your display's position, clock, phase. 7 POWER Power OFF/ON ; OSD active: Press to enter a selection in OSD 6 SELECT/ AUTO OSD inactive: Press to adjust the volume. Green: ON Orange: Sleep 5 Press again to view the OSD. Adjusting Display Settings 1 2 34567 External Controls 1 OSD Menu Press to exit. OSD active: Press to select or adjust OSD options 3 ARROW OSD inactive: Press 3 once, then ð,ç to adjust the brightness or , to adjust the contrast. OSD...
AL708 User Guide
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... making all selections, press the OSD button to exit the OSD. ( or the adjustment can be auto saved after 45 seconds.) OSD MENU: z Brightness & Contrast Adjustment Brightness: Adjust the brightness of characters. 6 Use the buttons to adjust the control to enter 3. Press the OSD Menu button, the OSD menu open. 2. OSD Options: á Please refer to " External Controls" on the screen background. PHASE: Adjust to remove any vertical bars or stripes visible on Page 5. The horizontal screen size will also change. Contrast: Adjust the difference between the light...
... making all selections, press the OSD button to exit the OSD. ( or the adjustment can be auto saved after 45 seconds.) OSD MENU: z Brightness & Contrast Adjustment Brightness: Adjust the brightness of characters. 6 Use the buttons to adjust the control to enter 3. Press the OSD Menu button, the OSD menu open. 2. OSD Options: á Please refer to " External Controls" on the screen background. PHASE: Adjust to remove any vertical bars or stripes visible on Page 5. The horizontal screen size will also change. Contrast: Adjust the difference between the light...
AL708 User Guide
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Adjust to factory settings. 7 H-Position: Adjust the horizontal position of the picture. Language selection OSD POSITION: Adjust the OSD window position on the screen and vice versa. There are four items for example: horizontal/ vertical refresh rate), display information is briefly shown on the screen. LANGUAGE: Multi- INFORMATION: "ON" When changing screen resolution setting( for color adjustment: 9300K: Bluish white 6500K: Reddish white User defined: Red, Green, Blue. RESET: Recall to set your own color level. z Position Adjustment z Color Adjustment z Other V-Position...
Adjust to factory settings. 7 H-Position: Adjust the horizontal position of the picture. Language selection OSD POSITION: Adjust the OSD window position on the screen and vice versa. There are four items for example: horizontal/ vertical refresh rate), display information is briefly shown on the screen. LANGUAGE: Multi- INFORMATION: "ON" When changing screen resolution setting( for color adjustment: 9300K: Bluish white 6500K: Reddish white User defined: Red, Green, Blue. RESET: Recall to set your own color level. z Position Adjustment z Color Adjustment z Other V-Position...
AL708 User Guide
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Please refer all servicing to service the monitor yourself or open the computer yourself. Troubleshooting Problem & Question Possible Solutions àCheck if the power switch is in the Power LED is not ON ON position àPower Cord should be connected. àCheck if the power switch is in the ON position àPower Cord should be connected. àMake sure the video cable is securely No Picture connected to the back of the monitor and the computer. à...
Please refer all servicing to service the monitor yourself or open the computer yourself. Troubleshooting Problem & Question Possible Solutions àCheck if the power switch is in the Power LED is not ON ON position àPower Cord should be connected. àCheck if the power switch is in the ON position àPower Cord should be connected. àMake sure the video cable is securely No Picture connected to the back of the monitor and the computer. à...