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Acer AL707 Service Manual

17" lcd monitor
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SERVICE MANUAL

17" LCD Monitor
AL707
ACER

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Summary of Contents for Acer AL707

  • Page 1: Service Manual

    SERVICE MANUAL 17" LCD Monitor AL707 ACER...
  • Page 2 THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE ACCURACY OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RE LIABILITY FOR CHANGES, ERRORS OR OMISSIONS, MANUFACTURE DATA : Oct-17-2002 REVISE:...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS PAGE 1. SPECIFICATIONS ....................GENERAL SPECIFICATIONS ...........…....LCD MONITOR DESCRIPTION ..............INTERFACE CONNECTOR ..............……. 2. PRECAUTION AND NOTICES ................ASSEMBLY PRECAUTION ................. OPERATIONG PRECAUTION ..............STORAGE PRECAUTION …................ HIGH VOLTAGE WARNING ............... 3. OPERATING INSTRUCTIONS ................4. ADJUSTMENT ......................ADJUSTMENT CONDITIONS AND PRECAUTIONS .......

  • Page 4: Specifications

    1. SPECIFICATIONS FOR LCD MONITOR General specifications 1. LCD-Panel : Active display area 17 inches diagonal 0.264 mm x 0.264 mm Pixel pitch 1280 x 1024 RGB vertical stripe arrangement Pixel format 2. Display Color : 6-bit, 16.2 million colors 3.

  • Page 5: Lcd Monitor Description

    LCD MONITOR DESCRIPTION The LCD MONITOR will contain an main board, an Inverter module, keyboard, External Adapter which house the flat panel control logic, brightness control logic, DDC and DC-DC conversion The Inverter module will drive the backlight of panel . The Adapter will provides the 12V DC-power 4.16 Amp to Main-board,and Inverter module .

  • Page 6: Precaution And Notices

    2. PRECAUTIONS AND NOTICES ASSEMBLY PRECAUTION (1) Please do not press or scratch LCD panel surface with anything hard. And do not soil LCD panel surface by touching with bare hands ( Polarizer film, surface of LCD panel is easy to be flawed) In the LCD panel, the gap between two glass plates is kept perfectly even to maintain display characteristic and reliability.

  • Page 7: Operating Instructions

    3. OPERATING INSTRUCTIONS This procedure gives you instructions for installing and using the LCD monitor display. Position the display on the desired operation and plug–in the power cord into External Adapter AC outlet. Three-wire power cord must be shielded and is provided as a safety precaution as it connects the chassis and cabinet to the electrical conduct ground.

  • Page 8: Adjustment

    4. ADJUSTMENT ADJUSTMENT CONDITIONS AND PRECAUTIONS Adjustments should be undertaken only on following function : Contras , Brightness, Black level, Phase, Clock , H/V-position , Languages, Color-(C2,C1,User), Auto level, OSD-position, Languages, Reset ADJUSTMENT METHOD Press MENU button to activate OSD Menu or make a confirmation on desired function, Press Left/Right button to select the function or done the adjustment.
  • Page 9 Gain adjustment : adjust C2 color-temperature Set the Contrast of OSD function to 45 and Adjust Brightness to chroma 7120 Y=240 ±5 cd/m Switch the chroma-7120 to RGB-mode (with press “MODE” button ) Switch the MEM.channel to Channel 01 ( with up or down arrow on chroma 7120 ) The lcd-indicator on chroma 7120 will show x = 302 ±10, y = 319 ±10, Y = 200 ±5 cd/m Adjust the Color(user)Mode: RED on OSD window, until chroma 7120 indicator reached the value R=100...

  • Page 10: Front Panel Control Knobs

    Clock adjustment Set the Chroma at pattern 63 (cross-talk pattern) or WIN98/95 shut-down mode (dot-pattern). Adjust until the vertical-Stripe-shadow as wide as possible or no visible. This function is adjust the PLL divider of ADC to generate an accurate pixel clock Example : Hsyn = 31.5KHz Pixel freq.

  • Page 11: Circuit & Software Description

    5. CIRCUIT-DESCRIPTION SPECIAL FUNCTION WITH PRESS-KEY A). press Menu button during 2 seconds along with plug-in the DC Power cord: That operation will set the monitor into “Factory- mode”, in Factory mode we can do the White balance adjustment with RS232 In Factory mode, OSD-screen will locate in left top of screen.
  • Page 12 MODULE-TPYE COMPONENT: 1. ADAPTER : CONVERSION-module to convert AC 110V-240V to 12VDC, with 4.16 AMP 2. INVERTER : CONVERSION-module to convert DC 12V to High-Voltage around 1650V, with frequency 30K-80Khz, 5.6mA-13mA Main-board Block diagram Input analog RGB & H,V,& ddc signal & Rs232 communication GMZAN2 (U200) DDC-chip...

  • Page 13: Software Flow Chart

    SOFTWARE FLOW CHART Power-On Subroutine CHART POWER-ON START Initial MCU I/O, Interrupt vector & Ram Initial 1.POC (backlight counter) Check Eeprom is empty ? 2. Clr all mode value Check White-balance data(C1 & C2) same with the backup data ? Check POC( backlight counter) data same with the backup data ? IF not same, overwrite the data with backup value.
  • Page 14 MAIN SUBROTINE LOOP Main loop start Process Power-saving status ( according to below flow-chart result) Check GMZAN2 IFM status .is change or not. And check Signal cable status ( cable not connected or not ) ** IFM is the register which measured the HSYN & Vsyn status Yes, IFM have change Wake-up GMZAN2 (because GMZAN2 was in...

  • Page 15: Interface-Board Trouble-Shooting Chart

    6 A). INTERFACE-BOARD TROUBLE-SHOOTING CHART *Use the PC Win 98 white pattern, with some icon on it, and Change the Resolution to 640x480 60 Hz / 31 KHz **NOTICE : The free-running freq. of our system is 48 KHz / 60 Hz, so we recommend to use another resolution to do trouble shooting, this trouble shooting is proceed with 640x480 @60Hz 31Khz NO SCREEN APPEAR DC-Power Part...
  • Page 16 PANEL-POWER CIRCUIT Check the PPWR panel power relative circuit, R223,R224, Q200,U202(pin 5,6,7,8) In normal operation, when LED =green, R223 check R225 should have response from 0V to 5V should =0 v, When we switch the power switch from on to off If PPWR no-response when the power switch Turn on and turn off, replace the U200-GMZAN2 OK,R225 have response...
  • Page 17 II (a) THE SCREEN is Abnormal , stuck at white screen, OSD window can’t appear, but keyboard & LED was normal operation. At general, this symptom is cause by missing panel data or panel power, so we must check our wire-harness which connected to panel or the panel power controller (U202) Check if the Wire harness from CN603 loose? Tighten it.
  • Page 18 II. (b)The screen had the Vertical Straight Line, might be stuck in Red, Green, Blue That symptom is cause by bad Panel issue ( might be the Source IC from Panel is cold solder or open loop ) so REPLACE THE PANEL TO NEW ONE. KEYBOARD BLOCK check Check U302 MCU pin 43,42,41,40,39 at Mechanical was stuck, Check !
  • Page 19 POWER-BLOCK check *Note : the Waveform of U304 pin 2 can determined the power situation 1. stable rectangle waveform with equal duty, freq around 150K-158KHz that means all power of this interface board is in normal operation ,and all status of 5V & 3.3V is working well 2.
  • Page 20 III.ALL SCREEN HAS INTERFERENCES OR NOISE, CAN’T BE FIXED BY AUTO KEY ** NOTE: There is so many kind of interferences, 1). One is cause by some VGA-CARD that not meet VESA spec or power grounding too bad that influence our circuit 2).other is cause by external interferences, move the monitor far from electronic equipment.( rarely happened) Use DOT-pattern, or win98/99 shut-down...
  • Page 21 There is interferences in DOS MODE NOTE :the criteria of doing AUTO-CONFIGURATION : must be a full-size screen, if the screen not full , the auto- configuration will fail. So in dos mode ,just set your “CLOCK” in OSD-MENU to zero or use some EDITOR software which can full fill the whole screen (ex: PE2, HE) and then press “AUTO”...

  • Page 22: Inverter -Module Spec &Trouble Shooting Chart

    6 B). INVERTER –MODULE SPEC &TROUBLE SHOOTING CHART For EN-7100S model , use Hydis panel, and the INVERTER is made by SAMPO SAMPO Parts No: DIVTL0085-D42 ACER Parts No.: 79LL17-3-S CONNECTOR PIN ASSIGMENT: A) CON1: INPUT MODEL NO.: S5B-PH-SM3-TB SYMBOL...
  • Page 23 D) FUNCTION TEST CIRCUIT: 120KΩ 120KΩ CON4 CON2 10Ω 10Ω CON5 CON3 CON1 VT-181 1 2 3 4 5 120KΩ 120KΩ 10Ω 10Ω VT-181...
  • Page 24 II. TROUBLE SHOOTING BLOCK DIAGRAM NO POWER: CHECKED ON FUSE TO CHANGED F1 Vin=12 FAIL F1= 4.0A/63V TO CHECKED Q4 & Q6 TO CHANGED PASS FAIL VOUT = 9V CH1: Q4/Q3/Q11 CH2: Q5/Q6/Q12 TO CHECKED L1/L2 PASS INPUT 9V TO L1 OR L2 TO CHANGED FAIL CH1: Q7/Q8/D12/PT1...
  • Page 25 C) OUTPUT CURRENT ABNORMALITY: CHECK PWM FREQUNCY AT C6 FAIL TO CHANGE C6 CHIP OR IC CHIP CHIP THE OSCILLATOR FREQUNCY RANGE = 150 ~ 250 KHZ PASS FUNCTION TEST OK! ENBALE ABNORMALITY: IF ENABLE ABNORMALITY TO CHANGE ON Q1 1.
  • Page 26 TRANSFORMER ABNORMALITY: IF TRANSFORMER ABNORMELITY TO CHECK FAIL TO CHANGE C3 & C4 OR C3 & C4 CHIP OUTLINE OR TRANSFORMER TRANSFORMER PASS FUNCTION TEST OK! G) INSTRUMENTS FOR TEST: DC POWER SUPPLY GPS-3030D AC VTVM VT:-181E DIGITAL MULTIMERTER MODEL-34401 HIGHTVOLT PROB MODEL-1137A SCOPE...

  • Page 27: Mechanical Of Cabinet Front Dis-Assembly

    MECHANICAL OF CABINET FRONT DIS-ASSEMBLY...
  • Page 28 BILL OF MATERIAL 1 ADPC12416AF LCD ADAPTER ASS'Y 1 PCS 1 CBPC782KKZAE1 CONVERSION BOARD FOR T782 1 PCS 1 DCPC780A7 DC POWER BOARD FOR T782K 1 PCS 1 KEPC782KA6 KEY BOARD FOR T782K* 1 PCS 1 7L WOODEN PALLET 0.0097 PCS 1 7L 1 60 WOODEN PALLET...
  • Page 29 1 50L 500 1 CABLE TIE 1 PCS 1 50L 600 2 HANDLE1 1 PCS 1 50L 600 3 HANDLE2 1 PCS 1 52L 1186 SMALL TAPE 8 CM 1 52L 1208 A TAPE 2 PCS 1 52L6019 1 TAPE 15 CM 1 52L6020 1 PROTECT FILM...
  • Page 30 2 C921 67L 215102 3H 1000UF 16V 1 PCS 2 C922 67L 215102 3H 1000UF 16V 1 PCS 2 C921 67L 215102 3J 1000UF/16V 0 PCS 2 C922 67L 215102 3J 1000UF/16V 0 PCS 2 C921 67L 215102 3K 1000UF/16V 0 PCS 2 C922 67L 215102 3K...
  • Page 31 3 C920 65L517K681 2T 680PF 500V +-10% 25P 1 PCS 3 C923 67L 305471 3T 470UF 16V 1 PCS PART NO ADPC12400AD LCD ADAPTER A6 ASS'Y 3 33L6007 1 LENS 1 PCS 3 40L 100 EW 1B ADAPTER ID 1 PCS 3 40L 154501 1 HI-POT GND LABEL FOR M 1 PCS...
  • Page 32 3 R904 61L1206684 CHIPR 680K OHM+-5% 1/8 1 PCS 3 C913 65L0603101 31 CHIP 100PF 50V NPO 1 PCS 3 C910 65L0603102 31 CHIP 1000PF 50V NPO 1 PCS 3 C914 65L0603102 32 CHIP 1000PF 50V X7R 1 PCS 3 C927 65L0603103 32 0.01UF+-10% 50V X7R 1 PCS...
  • Page 33 2 44L3231 8 A EVA WASHER 1 PCS 2 49L 51 1A CLEANING 0.05 ML 2 51L 500 1 WHITE GLUE 2 51L6002 2 ACCELERANT 0 ML 2 55L 100600 A SOLDER WIRE 0.5 G 2 55L 100603 SOLDER 9.1 G 2 U302 56L1125101 KJ/56L1125137-KJ WINBOND CPU...
  • Page 34 3 R229 61L0603000 CHIPR 0OHM +-5% 1/16W 1 PCS 3 R232 61L0603000 CHIPR 0OHM +-5% 1/16W 1 PCS 3 R233 61L0603000 CHIPR 0OHM +-5% 1/16W 1 PCS 3 R234 61L0603000 CHIPR 0OHM +-5% 1/16W 1 PCS 3 R310 61L0603000 CHIPR 0OHM +-5% 1/16W 1 PCS 3 R317 61L0603000...
  • Page 35 3 C951 65L0603102 32 CHIP 1000PF 50V X7R 1 PCS 3 C952 65L0603102 32 CHIP 1000PF 50V X7R 1 PCS 3 C953 65L0603102 32 CHIP 1000PF 50V X7R 1 PCS 3 C954 65L0603102 32 CHIP 1000PF 50V X7R 1 PCS 3 C955 65L0603102 32 CHIP 1000PF 50V X7R...
  • Page 36 3 C246 65L0603104 12 0.1UF +-10% 16V X7R 1 PCS 3 C300 65L0603104 12 0.1UF +-10% 16V X7R 1 PCS 3 C304 65L0603104 12 0.1UF +-10% 16V X7R 1 PCS 3 C308 65L0603104 12 0.1UF +-10% 16V X7R 1 PCS 3 C311 65L0603104 12 0.1UF +-10% 16V X7R...
  • Page 37 3 L200 71L 57G601 TI3216JIG601-T17A 1 PCS 3 L201 71L 57G601 TI3216JIG601-T17A 1 PCS 3 L202 71L 57G601 TI3216JIG601-T17A 1 PCS 3 L203 71L 57G601 TI3216JIG601-T17A 1 PCS 3 L300 71L 57G601 TI3216JIG601-T17A 1 PCS 3 L900 71L 57G601 TI3216JIG601-T17A 1 PCS 3 L601 71L 59B121...
  • Page 38 3 D205 93L 64 32 LL4148 SMD 0 PCS 3 D206 93L 64 32 LL4148 SMD 0 PCS 3 D207 93L 64 32 LL4148 SMD 0 PCS 3 D301 93L 64 32 LL4148 SMD 0 PCS 3 D302 93L 64 32 LL4148 SMD 0 PCS 3 D202...
  • Page 39 1 PCS 2 Q1L 140 10128 SCREW 6 PCS 2 Q1L1030 10128 SCREW 2 PCS 2 Q1L1030 12128 SCREW 4 PCS Key Parts List(AL707) Location AOC P/N Specification PANEL 750LLK70300 LCD PANEL HT17E11-300 SIGNAL CABLE 89L 174L1710E SIGNAL CABLE VEDIO CABLE...

  • Page 40: Power System And Consumption Current

    9. POWER SYSTEM AND CONSUMPTION CURRENT ADAPTER MODULE INVERTER MODULE Input AC 110V, 60Hz/240V, 50Hz Input DC 12V Output DC 12V 5A Output AC 1500V/30K-80KHz Current 14mA Main board power system LM2596S-5, 12V to 5V (5A SPEC) To CPU, Eeprom, 24c21, control-inverter-on.off 860mA when Cable not Connected 841mA when Normal operation To Hyundai-300 Panel around 1450mA...

  • Page 41: Pcb Layout

    PCB LAYOUT MAIN PCB LAYOUT DDC chip RT9164 LVDS power ( LT1117) 5V to 2.5v 5V to 3.3v Input Connector LVDS Gmzan2 AIC1084 5V to 3.3v Panel- Power Control Inverter-connector Keyboard-connector LM2596 convert 12V to 5V Audio-connector...

  • Page 42: Schematic Diagram

    DENABLE TCLK TX2-/+O TX2-/+O MFB9 TX3-/+O TX3-/+O TXC-/+O TXC-/+O TXCLKIN /PWRDWN NT7181 CRYSTAL2 50MHZ 24LC21A EEPROM /VGA_CON EEPROM1 24C16 MICRO CONTROLLER Winbond ACER SIEMENS 43B1-M Title BLOCK DIAGRAM CRYSTAL1 20MHZ Size Document Number 715L820-2-2 Date: Monday, July 29, 2002 Sheet...
  • Page 43 C929 C930 VDDA C947 C946 100uF 0.1uF 100uF 0.1uF 600(1206) C224 C225 C226 C227 C228 ACER Electronics Co., Ltd. C222 C223 100uF 0.1 uF 0.1 uF 0.1 uF 0.1 uF ADC-AGND 0.1 uF 0.1 uF Title ZAN2 ADC GNDA Size...
  • Page 44 L604 C939 C940 TXIN16 PLLGND PD35 0.01UF 0.1uF 0.1uF 10uF BEAD (120) 330uF 330uF TXIN17 PLLGND TXIN23 TXIN24 TXIN25 PDISPE TXIN26 PCLKB TXCLKIN ACER Electronics Co., Ltd. Title LVDS Size Document Number 715A820-2-2 Custom Date: Monday, October 21, 2002 Sheet...
  • Page 45 MMBT3904 /BKLT-ON Q304 R(OP) HEADER 5 R403 10 K 4.7K(OP) 24LC04B R401 R402 VR501 BKLT ADJ BKLT-PWM 10 K 0(OP) C401 1K(OP) 100uF(OP) ACER Electronics Co., Ltd. Title MICRO CONTROLLER Size Document Number 715L820-2-2 Date: Monday, October 21, 2002 Sheet...

  • Page 46: Power Block

    AIC 1084 L300 Vout (600) R307 R305 4431 Q202 4.7K C310 C311 C312 PW5V-ON 330 uF/35V MMBT3904 0.1 uF 330 uF/35V 4.7K ACER Electronics Co., Ltd. POWER Block Title POWER Size Document Number 715L820-2-2 Date: Monday, October 21, 2002 Sheet...
  • Page 47 Part No.:CBPC782KKZAE1...
  • Page 48 Part No.: 79L L17-3-S...
  • Page 49 Part No.: KEPC782KA6...

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