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Acer AL708 Service Manual

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WARNING
SPARE PARTS LIST
L7EA (AL708)
CONTENTS
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  • Page 1: Table Of Contents

    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 L7EA (AL708) CONTENTS...
  • Page 2 Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the product or products dealt within this service information by anyone else could result in serious injury or death. L7EA (AL708)

  • Page 3: Safety Precautions

    4-4 Move the resistor connection to each exposed metallic part and measure the voltage. 4-5 Reverse the polarity of the AC plug in the AC outlet and repeat the above measurement. L7EA (AL708) SAFETY PRECAUTIONS 4-6 Voltage measured must not exceed 1.5 volt AC cord is...

  • Page 4: Dimensions

    1. DIMENSIONS~1 unit : mm Front Side Rear Side L7EA (AL708)
  • Page 5 1. DIMENSIONS~2 unit : mm Base Unit Side View L7EA (AL708)

  • Page 6: General Information

    2.7 Fine dot pitch LCD panel with a fine dot pitch ( Horizontal : 0.264 mm / Vertical : 0.264 mm) L7EA (AL708) 2. GENERAL INFORMATION 2.8 Superior display performance High contrast High brightness : 250 cd / m Wide view angle : 140 / 100 degrees (H/V) 2.9 Special function...

  • Page 7: Specifications

    < 30 ms (Tr+Tf) View angle 75/75/65/60 Color coordinate x=0.313,y=0.329 4. CONNECTORS 4.1 AC inlet : CEE22 typed connector L7EA (AL708) 3. SPECIFICATION 4.2 Audio PHONEJACK STEREO 4.3 Video signal connector 15P Mini D-Sub LANGUAGE connector x 1 MNEMON : Line-in receptacle...

  • Page 8: Electrical Specifications

    If your timing is within following specification, this LCD display can automatically function with a certain position. Horizontal: Sync frequency : 30~81 kHz Vertical : Sync frequency : 56~75Hz L7EA (AL708) 5.4 Preset Timings mode IBM VGA VESA MAC 13”...
  • Page 9 Value CR= B / A Conditions Contrast : Maximum B: Full white pattern Brightness : min A: Full black pattern Brightness : max L7EA (AL708) 6. ENVIRONMENTS Operation Storage and Shipment Tempera 0 ~ 40 C -20 ~ +60 C...

  • Page 10: Theory Of Operation

    The gm2120 on-chip microcontroller(OCM) serves as the system microcontroller.That is , it programs the gm2120 and manages other devices in the non-volatile RAM.using general purpose input/output (GPIO) pins. L7EA (AL708) The gm2120 is a graphics processing IC for LCD Pin Number...
  • Page 11 LVDS link. At a transmit clock frequency of 85 MHz, 24 bits of RGB data and 3 bits of LCD timing and control data ( FPLINE, FPFRAME, DRDY) are transmitted at rate of 595 Mbps per LVDS data channel. U1 AS the ODD pixel transmitter , U2 as the EVEN pixel transmitter. L7EA (AL708) Pin Usage Backlight control...
  • Page 12 Off state Input Power On / Off Voltage OUTPUT Rated Output Strike-on Voltage Rated Output Voltage Rated Output Frequency Rate Output Current per tube L7EA (AL708) 12Vdc 11.4~12.6 Vdc < 2A < 0.1 W 2~3.3 for On, 0~1 for Off 1310 Vrms...
  • Page 13 OUTPUT Rated Output Voltage Output Voltage Regulation Output Ripple and Noise Rate Output Current Turn-on Delay L7EA (AL708) 90~240 Vac , 50/60 Hz 90~260 Vac, 47~63 Hz < 1.5A < 100A @ 120Vac < 1.5 W at 120Vac 12 Vdc + 10 / -5 % <...

  • Page 14: Disassembly Instructions

    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. MB board removal 1) remove four screw "4" 2) remove the MB board L7EA (AL708)
  • Page 15 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 L7EA (AL708)

  • Page 16: Control Location

    You may need to readjust brightness after the display is warmed up. Contrast. Press the ＜l and l＞ buttons to adjust the contrast of the screen. L7EA (AL708) 6. CONTROL LOCATION ← ↑ → Selected or...
  • Page 17 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. L7EA (AL708)

  • Page 18: Necessary Equipment List

    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 L7EA (AL708)

  • Page 19: Block Diagram

    8. L7EA (AL708) BLOCK DIAGRAM~1 ~Video L7EA(AL708) 8-1...
  • Page 20 8. L7EA (AL708) BLOCK DIAGRAM~2 ~Audio L7EA(AL708) 8-2...
  • Page 21 8. L7EA (AL708) BLOCK DIAGRAM-3 ~Power L7EA(AL708) 8-3...

  • Page 22: Conductor View

    9. CONDUCTOR VIEW 1~3 MB board L7EA (AL708)
  • Page 23 Audio board Button board L7EA (AL708)

  • Page 24: Schematic Diagram

    C144 R110 R100 0.1u/6 47K/6 47K/6 VGA_SDA R106 100/6 VGA_SCL R102 100/6 DB15HD AT24C02-10SC-1.8 5.6V 5.6V L7EA (AL708) 10-1 Input connector VGA_5V 100/6 C131 0.01u/6 100/6 C130 0.01u/6 100/6 C114 0.01u/6 100/6 C112 0.01u/6 100/6 C109 0.01u/6...
  • Page 25 RMDATA3 C178 15p/4 RMDATA2 C179 15p/4 0.1u/6/NS 4-P/NS RMDATA1 C180 15p/4 RMDATA0 C181 15p/4 33p/6 33p/6 DEBUG CONNECTOR L7EA (AL708) 10-2 Scaler gm2120 3.3V_DVDD 2.5V_VDD 0.1u/6 3.3V_AVDD AVDD_DDDS AVDD_SDDS AVDD_RPLL RESERVED RESERVED RESERVED RESERVED RESERVED 3.3V_A AVDD_BLUE AVDD_GREEN AVDD_RED AVDD_ADC VDD_RXPLL_2.5...
  • Page 26 R101 22/8 KEY_LEFT R105 22/8 R109 22/8 R114 22/8 LED_GRN DTC144EUA C113 C185 C116 12p/6 0.1u/6 12p/6 LED_ORANGE DTC144EUA L7EA (AL708) 10-3 Connector CX000800000/1206/NS C193 0.1u/8/NS 15p/4 15p/4 15p/4 15p/4 15p/4 15p/4 15p/4 4.7K/6/NS 15p/4 15p/4 15p/4 15p/4 15p/4 PBIAS...
  • Page 27 DBBLU5 DBBLU6 DBBLU7 DBGRN[0..7] DBGRN0 DBGRN1 DBGRN2 DBGRN3 DBGRN4 DBGRN5 DBGRN6 DBGRN7 1u/8 47K/6 0/6/NS 4.7K/6 SI9435 PPWR MMBT3904L L7EA (AL708) 10-4 LVDS-IF 0.1u/6 0.1u/6 0.1u/6 0.1u/6 DS90CF383MTD DARED6 TXIN27 PWRDWN DARED7 TXIN5 DARED0 TXODD0- TXIN0 TXOUT0- DARED1 TXODD0+ TXIN1...
  • Page 28 10. SCHEMATIC DIAGRAM~5 C151 1u/8 +12V FUSE1 +12V INPUT 4A125,SLOW R6H6-3Ts CX000800000/1206 C143 C140 0.1u/8 C153 330u/16V 330u/16V MTH276D126 MTH276D126 MTH276D126 L7EA (AL708) 10-5 Power 1SS355 R124 BOOST 0.33/1206 R117 47/6 NDS9410A/SO R111 C149 0.1u/6 330K/6 1SS355 C142 C146 R108 0.1u/8...

  • Page 29: Button Board

    4401-10-10P-R HDK632A HDK632A HDK632A HDK632A HDK632A orange HDK632A LED1 EL-209-2EGW green HDK632A MTH276D126 MTH276D126 L7EA (AL708) 10-6 Button board POWER SELSE RIGH DOWN LEFT MENU Title Size Document Number Date: Friday, May 24, 2002 PROJECT : L7E Quanta Computer Inc.
  • Page 30 20k/6 R_LINE RIN_PC ZD005D100 600/CX601T02001 20k/6 220P/6 220P/6 AGND 47K/6 47K/6 AGND AGND +12V VOLUME MUTE 4607-07-07P-R AGND AGND L7EA (AL708) 10-7 Audio +12V CX000800000/1206 0.1U/8 ZD0417 Z0415 OUT_R- 1U/50V ZD0418 Z0416 OUT_R+ 1U/50V +12V 10K/6 10K/6 OUT_L- 68K/6 VOLUME...

  • Page 31: Trouble Shooting Hints

    11. TROUBLE SHOOTING HINTS 1. No Power 2. No Characters , Missing one Color L7EA (AL708) 12-1...
  • Page 32 3. No Audio L7EA (AL708) 12-2...

  • Page 33: Replacement Parts List

    C2,C3 Symbol LED1 SW1,SW2,SW3,SW4,SW5 SW6,SW7 Symbol L7EA (AL708) 12. REPLACEMENT PARTS LIST~1 PARTS NO. DFHD03MR065 CONN DIP HEADER 3P 1R MR(P1.5,H4.1) DFHD04MR124 CONN DIP HEADER 4P 1R MR(P2.0,H4.1) DFHD07MR047 CONN DIP HEADER 7P 1R MR(P2.0,H4.1) CX0P121R000 EMI FILTER CHIP HI1206P121R-00(120 6A) CX601T02001 EMI FILTER CHIP N2012Z601T02(0.2A,600...
  • Page 34 R85,R90,R96 R104 R108 R117 R111 R51,R89,R92,R94,R98 R99,R101,R105,R109,R114 L7EA (AL708) 13. REPLACEMENT PARTS LIST~4 MB board Material DFPJ03MR140 CONN POWER JACK 3P MR DK400WFU001 FUSE SMD 4A/32V,FAST(UL/CSA,3216) DGP320001Z0 IC SOCKET,SMD PLCC 32P(LOW PROFILE,SMD) DFHD30MR127 CONN SMD HEADER 30P 1R MR(P1.25 H1.9) DFHD10MR197 CONN DIP HEADER 10P 1R MR(P1.5,H4.1)
  • Page 35 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) CS13304FA06 RESISTOR CHIP 330 1/8W+-1%(0805) CS12004FA02 RESISTOR CHIP 200 1/8W,+-1%(0805) CS00006J205 RESISTOR CHIP 0 1/4W+-5%(3216) CJ022084N10 RES ARRAY CHIP 22,1/16W(+-5%,8P4R)R-PIN CJ310084N15 RES ARRAY CHIP 10K,1/16W(+-5%,8P4R)R-PIN CH51004MA32 CAPACITOR CHIP 1uf 25V(+-20%,Y5V,0805) CH41004Z931 CAP CHIP 0.1u,25V(+80-20%,Y5V,0603)
  • Page 36 D6,D7 Q1,Q14 Q8,Q11 U9,U14 U1,U2 U5,U6 L7EA (AL708) CC63303MD24 CAP ELEC 33U 16V(+-20%,105C,5*7,LESR) CC71004MD50 CAP ELEC 100U 25V(+-20%,105C,6*11,LESR) CC81001MD71 CAP ELEC DIP 1000U 6.3V +-20% 105C 8*11.5 CC74704MD29 CAP. ELEC DIP 470U 16V(+-20%,105C,8*9)MB BD05232BZ09 DIODE,ZENER,SMD MMBZ5232B(5.6V,SOT23) BC1SS355Z05 DIODE SMD 1SS355(80V,100MA) BCRB081LZ02 DIODE SMD RB081L-20(20V,5.0A,VF:0.45V)
  • Page 37 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) Remark Audio Board Button Board MB Board...

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