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WARNING
SAFETY PRECAUTIONS
DIMENSIONS
GENERAL INFORMATION
SPECIFICATIONS
THEORY OF OPERATION
DISASSEMBLY INSTRUCTIONS
CONTROL LOCATION
NECESSARY EQUIPMENT LIST
BLOCK DIAGRAM
CONDUCTOR VIEW
SCHEMATIC DIAGRAM
TROUBLE SHOOTING HINTS
REPLACEMENT PARTS LIST
SPARE PARTS LIST
ACER
AL708 Lcd
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Summary of Contents for Acer AL708
- Page 1 ACER AL708 Lcd WARNING SAFETY PRECAUTIONS DIMENSIONS GENERAL INFORMATION SPECIFICATIONS THEORY OF OPERATION DISASSEMBLY INSTRUCTIONS CONTROL LOCATION NECESSARY EQUIPMENT LIST BLOCK DIAGRAM CONDUCTOR VIEW SCHEMATIC DIAGRAM TROUBLE SHOOTING HINTS REPLACEMENT PARTS LIST SPARE PARTS LIST...
- Page 2 SAFETY PRECAUTIONS 1. CAUTION: 4-6 Voltage measured must not exceed 1.5 volt No modification of any circuit should be attempted. RMS, from any exposed metallic part to the Service work should only be performed after you ground. A leakage current tester may be are throughly familiar with all of the following safety used in the above hot check, in which case checks and servicing guide lines.
- Page 3 1. DIMENSIONS~1 unit : mm Front Side Rear Side...
- Page 4 1. DIMENSIONS~2 unit : mm Base Unit Side View...
- Page 5 2. GENERAL INFORMATION 1. OUTLINE 2.8 Superior display performance This monitor is 17" multi-scan color LCD display High contrast : 350 : 1 with the following features. High brightness : 250 cd / m (Typical) OSD ( on screen display ) control allows easy user Wide view angle : 140 / 100 degrees (H/V) adjustment.
- Page 6 3. SPECIFICATION 1. Outline 4.2 Audio : Line-in receptacle 1.1 POWER SW, LED,UP.DN,LEFT,RIGHT,SEL and MENU key are located on the front panel. 1.2 Video signal connector, audio line-in receptacle and DC-IN are located on the back side of the cabinet. 1.3 OSD menu includes the following function.
- Page 7 5. ELECTRICAL SPECIFICATIONS 5.4 Preset Timings 5.1 Standard conditions Display area 338 x 270 mm mode Resolution (KHz) Video signal level 0.7 Vpp IBM VGA 720 x 400 31.46 Contrast Max. VESA 640 x 480 31.46 Brightness Max. MAC 13” 640 x 480 Ambient 20 +/- 5 C degrees...
- Page 8 5.6 Display Area 6. ENVIRONMENTS Display area : 338 x 270 mm Operation Storage and Shipment 5.7 General performance 5.7.1 Maximum pixel clock Tempera 0 ~ 40 C -20 ~ +60 C 135 MHz ture 5.7.2 Maximum luminance Humidit 5 ~ 90 % 5 ~ 90 % * Altitude 3000m...
- Page 9 4. THEORY OF OPERATION This section describes the function of the LCD monitor per functional block. L7EA monitor includes MB board, audio board (option), inverter board, adapter and button board. 4.1 MB BOARD The MB board is a four-layer, single-landed design with ground and internal planes provided. DC power from the power adapter enter the board through DC jack.
- Page 10 Pin Number Pin Name Pin Usage GPIO0 / PWM0 Backlight control GPIO1 / PWM1 Volume control GPIO2 / PWM2 Key-Left GPIO3 / TIMER Key-Up GPIO4 / UART_DI Debug Purpose GPIO5 / UART_DO Debug Purpose GPIO6 Key-Right GPIO7 Key-Down GPIO8 / IRQINn LED-Orange GPIO9 Key-Sel...
- Page 11 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 DC converters. The device consists of an internal temperature compensated reference, conparator, controlled duty cycle oscillator with an active current sense circuit. Desired output voltage are determined by the equation Vout = 1.25 ( 1 + R104 / R103), In this case, the output voltage are 5 Volts.
- Page 12 4.4 Adapter This is a general purpose AC / DC adapter which converter 90~240 Vac to a stabilized DC voltage 12 V with rated output current of 4.16A . Electrical specification describled as below. INPUT Rated Input Voltage 90~240 Vac , 50/60 Hz Operation Input Voltage 90~260 Vac, 47~63 Hz Input Current...
- Page 13 5. DISASSEMBLY INSTRUCTIONS 1. Stand& rear cover removal 1) remove four large screw "1" from the rear cover 2) remove the rear cover 3) remove four screw "2" 4) remove the stand 2. ESD cover removal 1) remove four screw "3" 2) remove the ESD cover 3.
- Page 14 4. Inverter board removal 1) remove two screw "5" 2) remove the Inverter board 6. Panel module removal 1) remove four screw "6" 2) remove the Panel module 7. Panel removal 1) remove four screw "7" 2) remove the Panel...
- Page 15 6. CONTROL LOCATION MENU Power ← ↑ → ↓ Selected or change function To power on and To increase level off the display of selected item power status To decrease level indicator ( LED ) of selected 1)To step up the parameter 2) volume 1)To step down...
- Page 16 Vertical position. Press the △ and ▽ buttons to move image up and down. Horizontal position. Press the ＜l and l＞ button to move image left and right. The Auto function configures the vertical and horizontal position for you. Language. Press the ＜l and l＞ buttons to change the OSD language display setting.
- Page 17 7. NECESSARY EQUIPMENT LIST Item Personal Computer with Windows 98 or above version Luminance Meter Minolta CA 110 Video Gnerator : Chroma 2000,2135,2250 or equivalent Colour Analyzer : Minolta , Chroma or equivalent Watt / Power Meter 10 Times Magnifier...
- Page 20 8. L7EA (AL708) BLOCK DIAGRAM-3 ~Power L7EA(AL708) 8-3...
- Page 21 9. CONDUCTOR VIEW 1~3 L7EA (AL708) MB board...
- Page 22 Audio board Button board L7EA (AL708)
- Page 23 GREEN- VGA_SCL R102 100/6 100/6 C109 0.01u/6 BLUE+ DB15HD AT24C02-10SC-1.8 100/6 C105 0.01u/6 BLUE- 5.6V 5.6V 75/6 75/6 75/6 Vsync 22/6 NC7WZ14P6/NS +3.3V Hsync 22/6 C104 NC7WZ14P6/NS L7EA (AL708) 10-1 5.6V 5.6V 47p/6 SC70-6 510/6 47p/6 C155 C156 0.1u/6 0.1u/6...
- Page 24 C174 15p/4 RMDATA6 C175 15p/4 RMDATA5 C176 15p/4 GPIO5/UART_DO R136 330/6 HFSn GPIO4/UART_DI RMDATA4 C177 15p/4 R137 330/6 HCLK L7EA (AL708) 10-2 RMDATA3 C178 15p/4 RMDATA2 C179 15p/4 0.1u/6/NS 4-P/NS RMDATA1 C180 15p/4 Reset /RESET RMDATA0 C181 15p/4 Circuit 33p/6...
- Page 25 1K/6 22/8 LCD_ON/OFF 22/8 KEY_DOWN 22/8 KEY_SEL KEY_RIGHT 22/8 KEY_UP 22/8 KEY_ESC R101 22/8 KEY_LEFT R105 22/8 R109 22/8 L7EA (AL708) 10-3 R114 22/8 4401-10-10P-R LED_GRN DTC144EUA C145 C113 C135 C189 C139 C185 C132 C188 C141 C129 C190 C116 C186...
- Page 26 TXIN21 PLLGND DBBLU5 TXIN22 PLLGND 22u/25V 0.01u/6 TXIN23 TXIN24 TXIN25 TXIN26 DISP_CLK TXCLKIN C184 12p/6 +3.3V 10. SCHEMATIC DIAGRAM~4 LVDS-IF 0.1u/6 22u/25V L7EA (AL708) 10-4 LCDVCC 1u/8 47K/6 CX000800000/1206 0/6/NS 0.1u/6 4.7K/6 SI9435 C183 C182 PPWR 330u/16V MMBT3904L 330u/16V 0.1u/6...
- Page 27 1K/6 C138 R103 1K/6 1% CX000800000/1206 C128 47UH C134 C136 2200p/6 1n/6 0.1u/6 1000u/6.3V RB081L-20 10. SCHEMATIC DIAGRAM~5 Power L7EA (AL708) 10-5 +2.5V 0.8A Max VOUT CX000800000/1206 ADJ/GND 120/8 LT1117/TO223 100u/25V 100u/25V 120/8 +3.3V 0.8A Max VOUT CX000800000/1206 ADJ/GND 200/8...
- Page 28 4401-10-10P-R POWER HDK632A SELSE HDK632A RIGH HDK632A HDK632A DOWN HDK632A LEFT orange HDK632A LED1 MENU EL-209-2EGW green HDK632A 10. SCHEMATIC DIAGRAM~6 Button board L7EA (AL708) 10-6 MTH276D126 MTH276D126...
- Page 29 10. SCHEMATIC DIAGRAM~7 Audio +12V CX000800000/1206 AUDIO-IN 470U/25V 470U/25V 0.1U/8 AGND 600/CX601T02001 L_LINE LIN_PC ZD0417 Z0415 SPKOUTL OUT_R- 20k/6 1U/50V R_LINE RIN_PC ZD0418 Z0416 ZD005D100 600/CX601T02001 OUT_R+ 20k/6 1U/50V +12V 10K/6 10K/6 220P/6 220P/6 4606-04-04P-R OUT_L- 68K/6 VOLUME VOLUME SPEAKER OUT SPKOUTR OUT_L+ AGND...
- Page 30 11. TROUBLE SHOOTING HINTS 1. No Power 2. No Characters , Missing one Color L7EA (AL708) 12-1...
- Page 31 3. No Audio...
- Page 32 DHP0002B108 SWITCH PUSH BUTTON(PT-002-B1,50mA,12V SW6,SW7 DALM7QTB2B9 PCB(BUTTON) LM7Q TB(2L,222*27.5,REVB) 13. REPLACEMENT PARTS LIST~3 Audio in Symbol PARTS NO. Descripition DFHD03MR065 CONN DIP HEADER 3P 1R MR(P1.5,H4.1) DFTJ05FR355 CONN DIP PHONE JACK 5P FR(H10) DALM7AB12A3 PCB(EAR) LM7Q AUB(2L,14*36,REVA) L7EA (AL708) 13-1...
- Page 33 RES CHIP 75 1/10W,+-5%(0603) R104 CS23003F900 RES CHIP 3K 1/10W,+-1%(0603) R108 CS42403F905 RESISTOR CHIP 240K 1/10W,+-1%(0603) R117 CS04703J906 RES CHIP 47 1/10W,+-5%(0603) R111 CS43303J906 RES CHIP 330K 1/10W,+-5%(0603) CS15103J909 RESISTOR CHIP 510 1/10W,+-5%(0603) R51,R89,R92,R94,R98 CS02204JA00 RESISTOR CHIP 22 1/8W+-5%(0805) R99,R101,R105,R109,R114 L7EA (AL708) 13-2...
- Page 34 C84,C91 CH03306J905 CAPACITOR CHIP 33P 50V(+-5%,NPO,0603) CH11006J901 CAPACITOR CHIP 100P 50V(+-5%,NPO,0603) C113,C116,C129,C132,C135 CH01206J906 CAPACITOR CHIP 12P 50V(+-5%,NPO,0603) C137,C139,C141,C145,C154 C184,C196,C197 C24,C25,C26,C27,C28 CH01506JB06 CAP CHIP 15P 50V(+-5% C0G 0402) C29,C30,C31,C32,C33 C34,C35,C36,C37,C38 C39,C44,C45,C46,C47 C48,C49,C50,C51,C52 C53,C54,C55,C56,C57 C58,C59,C60,C61,C62 C63,C64,C65,C66,C67 C71,C77,C79,C81,C83 C86,C87,C89,C157,C158 C159,C160,C161,C162,C163 L7EA (AL708) 13-3...
- Page 35 AL07WZ14002 IC(6P) NC7WZ14P6X TINYLOGIC(SC70-6) AL001563001 IC(8P) AIC1563CS(SOP8) AKE1A8S0J07 IC EEPROM(8P) HT24LC16-SOP(2K*8)SOP AKE2A1S0J08 IC EEPROM(8P)HT24LC02-SOP 2K*1(SOP) U1,U2 AJVDM830K04 IC(56P) THC63LVDM83A(SSOP)24bits,3.3V U5,U6 AL001117078 IC(3P) AIC1117CY(SOT-223) AJ02120^C01 IC(208P) GM2120BD(162MHZ,PQFP) AL000809049 IC(3P) MAX809T(SOT23,3.08V) BG614318D55 XTAL DIP 14.318MHZ(+-30PPM,07010-X-136-2 DALM7SMB4B0 PCB 4 layer T1.6mm 135x115mm L7EA (AL708) 13-4...
- Page 36 16 HFL7E003014 CARTON L7EA (HFL7E003,REV3A) 17 DM333180103 POWER CORD 3P 1.8M(USA) V04VS330008180QD 18 DD0L7EPC004 CABLE ASSY L7E MB-VGA(15/15P,REV3A)428U 19 DD0L7EPC101 CABLE ASSY L7E PC-MONITOR REV:3A 428U 20 EALM7005027 NECK COVER L7EA (EALM7005,REV3E) 21 EALM7004021 NECK BEZEL L7EA (EALM7004,REV3C) L7EA (AL708)