Acer AL708 AL708 Monitor Service Guide
Acer AL708 Manual
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Acer AL708 manual content summary:
- Acer AL708 | AL708 Monitor Service Guide - Page 1
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 - Acer AL708 | AL708 Monitor Service Guide - Page 2
to service a product. 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) A - Acer AL708 | AL708 Monitor Service Guide - Page 3
following safety checks and servicing guide lines. 2. SAFETY CHECK Care should be taken while servicing this LCD display. Because of the permanently attached . Any attempt to replace another adapter could result in serious problem on the display. V To Metal Parts 0.15u . 1500 10W Earth AL708) B - Acer AL708 | AL708 Monitor Service Guide - Page 4
Front Side 1. DIMENSIONS~1 unit : mm Rear Side L7EA (AL708) 1-1 - Acer AL708 | AL708 Monitor Service Guide - Page 5
Base Unit 1. DIMENSIONS~2 unit : mm Side View L7EA (AL708) 1-2 - Acer AL708 | AL708 Monitor Service Guide - Page 6
the case of no-connection with computer or power saving operation. This function shows if monitor is alive or not and can 17 modes are preset and 9 modes are user definable. 2.7 Fine dot pitch LCD panel with a fine dot pitch ( Horizontal : 0.264 mm / Vertical : Channel ) Compatible L7EA (AL708) 2 - Acer AL708 | AL708 Monitor Service Guide - Page 7
4 8 3 7 2 6 1 DB15HD 16 17 15 14 13 12 11 PIN MNEMON SIGNAL 1 RV Red Video Part No. Driver bit of panel Contrast ratio Brightness Pixel pitch AA0170E1003 8 bit 350:1 typ, 250 cd/ m2 0.264 mm 2 GV 3 BV 4 Sync 14 VS Vertical Sync 15 SCL DDC Clock L7EA (AL708) 3-1 - Acer AL708 | AL708 Monitor Service Guide - Page 8
5.3 Acceptable timing If your timing is within following specification, this LCD display can automatically function with a certain position. Horizontal: Sync ~75Hz 5.5 Signal level and input impedance 5.5.1 Video Signal level This LCD display is adjusted at the factory using 0,7 Vp-p Video signal. - Acer AL708 | AL708 Monitor Service Guide - Page 9
90 % * 12000m * Non-condensation 7. REGULATORY STANDARDS 7.1 Safety standards This monitor applies to various safty & EMI standards May refer to the logo label 5.7.3 11.1 MTBF for completed unit without LCD > 30,000 hours (demonstrated MTBF) 11.2 MTBF for LCD The brightness is still more than 50 - Acer AL708 | AL708 Monitor Service Guide - Page 10
the system board is Genesis gm2120. The gm2120 is a graphics processing IC for LCD monitor. It provides all key IC functions required for LCD panel. On-chip functions include a high-speed triple-ADC , PLL, high and non-volatile RAM.using general purpose input/output (GPIO) pins. L7EA (AL708) 4-1 - Acer AL708 | AL708 Monitor Service Guide - Page 11
and PBIAS ( Pin113 and Pin114) to control LCD power sequencing once data and control signals are stable The gm2120 driver interface is highly programmable. It supports dual bus / dual port for SXGA drivers. 4.1.2 , 24 bits of RGB data and 3 bits of LCD timing and control data ( FPLINE, FPFRAME, DRDY) - Acer AL708 | AL708 Monitor Service Guide - Page 12
of pin 8 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 cathod fluorescence tubes. Electrical specification describled as below. Rate Output Current per tube 710 Vrms at 6 mA 45~60KHz 6 mA L7EA (AL708) 4-3 - Acer AL708 | AL708 Monitor Service Guide - Page 13
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 % < 600 mVp-p < 4.16A < 1 Second L7EA (AL708) 4-4 - Acer AL708 | AL708 Monitor Service Guide - Page 14
5. DISASSEMBLY INSTRUCTIONS 1. 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 "3" 2) remove the ESD cover 3 3 3 3 3. MB board removal 1) remove four screw "4" 2) remove the MB board 4 4 4 4 L7EA (AL708) 5-1 - Acer AL708 | AL708 Monitor Service Guide - Page 15
4. Inverter board removal 1) remove two screw "5" 2) remove the Inverter board 5 5 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 6 6 6 6 7 7 7 7 L7EA (AL708) 5-2 - Acer AL708 | AL708 Monitor Service Guide - Page 16
the display power status indicator ( LED ) 1)To step up the parameter 2) volume 1)To step down the parameter 2) volume To display main menu or off L7EA (AL708) 6-1 - Acer AL708 | AL708 Monitor Service Guide - Page 17
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) 6-2 - Acer AL708 | AL708 Monitor Service Guide - Page 18
7. NECESSARY EQUIPMENT LIST Item 1 Personal Computer with Windows 98 or above version 2 Luminance Meter Minolta CA 110 3 Video Gnerator : Chroma 2000,2135,2250 or equivalent 4 Colour Analyzer : Minolta , Chroma or equivalent 5 Watt / Power Meter 6 10 Times Magnifier L7EA (AL708) 7 - Acer AL708 | AL708 Monitor Service Guide - Page 19
8. L7EA (AL708) BLOCK DIAGRAM~1 ~Video L7EA(AL708) 8-1 - Acer AL708 | AL708 Monitor Service Guide - Page 20
8. L7EA (AL708) BLOCK DIAGRAM~2 ~Audio L7EA(AL708) 8-2 - Acer AL708 | AL708 Monitor Service Guide - Page 21
8. L7EA (AL708) BLOCK DIAGRAM-3 ~Power L7EA(AL708) 8-3 - Acer AL708 | AL708 Monitor Service Guide - Page 22
MB board 9. CONDUCTOR VIEW 1~3 L7EA (AL708) 9-1 - Acer AL708 | AL708 Monitor Service Guide - Page 23
Audio board Button board L7EA (AL708) 9-2 - Acer AL708 | AL708 Monitor Service Guide - Page 24
5 3 GND VCC A2 Y2 4 NC7WZ14P6/NS SC70-6 R2 1 +3.3V 1 C155 0.1u/6 C156 0.1u/6 2 2 0/6 GND GND VS 4 HS 4 L7EA (AL708) 10-1 PROJECT : L7E Quanta Computer Inc. Title INPUT CONNECTOR Size Date: Document Number 3. Input Connector Friday, May 24, 2002 DISPLAY Sheet 3 Rev A of 7 - Acer AL708 | AL708 Monitor Service Guide - Page 25
PWM2 5 GPIO1/PWM1 5 GPIO0/PWM0 5 VSS_DPLL VSS_SDDS VSS_DDDS Int_Test CLKOUT 201 N/C N/C Reserved 200 142 132 131 Reserved GND 147 143 138 PROJECT : L7E Quanta Computer Inc. Title gm2120 Size Date: Document Number 4. gm2120 Friday, September 27, 2002 DISPLAY Sheet 4 Rev A of 7 L7EA - Acer AL708 | AL708 Monitor Service Guide - Page 26
C139 C43 C141 C145 12p/6 0.1u/6 12p/6 0.1u/6 12p/6 0.1u/6 12p/6 0.1u/6 12p/6 0.1u/6 12p/6 0.1u/6 12p/6 0.1u/6 12p/6 12p/6 2 2 2 2 2 2 2 GND PROJECT : L7E Quanta Computer Inc. Title DISPLAY Size Date: Document Number 5. Display Friday, May 24, 2002 Rev DISPLAY A Sheet 5 of 7 L7EA - Acer AL708 | AL708 Monitor Service Guide - Page 27
12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 3800-30 GND PROJECT : L7E Quanta Computer Inc. Title LVDS IF Size Date: Document Number 6. LVDS_IF Friday, May 24, 2002 DISPLAY Sheet 6 Rev A of 7 L7EA - Acer AL708 | AL708 Monitor Service Guide - Page 28
+ C92 100u/25V GND U5 +3.3V 0.8A Max 3 VIN VOUT 2 1 ADJ/GND LT1117/TO223 1 R36 2 1 2 R30 200/8 + C70 100u/25V 330/8 GND PROJECT : L7E Quanta Computer Inc. Title POWER Size Date: Document Number 7. Power Friday, May 24, 2002 DISPLAY Sheet 7 Rev A of 7 L7EA - Acer AL708 | AL708 Monitor Service Guide - Page 29
SW7 1 2 3 4 HDK632A POWER SELSE RIGH UP DOWN LEFT MENU H1 2 9 3 8 4 1 7 5 6 MTH276D126 H2 2 9 3 8 4 1 7 5 6 MTH276D126 Button board PROJECT : L7E Quanta Computer Inc. Title L7E Size Document Number Date: Friday, May 24, 2002 BUTTON-BOARD Sheet 2 of Rev A 2 L7EA - Acer AL708 | AL708 Monitor Service Guide - Page 30
9 3 8 4 1 7 5 6 MTH276D126 AGND H201 2 9 3 8 4 1 7 5 6 MTH276D126 AGND 2 0/8 2 0/8 2 0/8 2 0/8 CN2 1 2 3 4 4606-04-04P-R SPEAKER OUT Title Size Date: PROJECT : L7E Quanta Computer Inc. CONTENT Document Number SCHEMATIC Friday, May 24, 2002 AUDIO Sheet 2 Rev A of 2 L7EA - Acer AL708 | AL708 Monitor Service Guide - Page 31
1. No Power 11. TROUBLE SHOOTING HINTS 2. No Characters , Missing one Color L7EA (AL708) 12-1 - Acer AL708 | AL708 Monitor Service Guide - Page 32
3. No Audio L7EA (AL708) 12-2 - Acer AL708 | AL708 Monitor Service Guide - Page 33
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 - Acer AL708 | AL708 Monitor Service Guide - Page 34
CHIP 240K 1/10W,+-1%(0603) RES CHIP 47 1/10W,+-5%(0603) RES CHIP 330K 1/10W,+-5%(0603) RESISTOR CHIP 510 1/10W,+-5%(0603) RESISTOR CHIP 22 1/8W+-5%(0805) L7EA (AL708) 13-2 - Acer AL708 | AL708 Monitor Service Guide - Page 35
,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 - Acer AL708 | AL708 Monitor Service Guide - Page 36
(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 - Acer AL708 | AL708 Monitor Service Guide - Page 37
Board 4 AA0170E1003 LCD(TFT) 17" QD170E1LG03 REV:A LCD panel 5 panel assembly 8 EAL7E001033 LCD BEZEL-1 L7E(EAL7E001, EALM7006,REV3C) 11 EAL7E002030 LCD COVER L7EA (EAL7E002,REV3D HBL7E002,REV3A) 15 HDL7E003012 MANUAL L7EA (HDL7E003,REV3A) 16 L7E PC-MONITOR REV:3A 428U 20 EALM7005027 NECK