Acer AL1751 Service Guide
Service Guide Version and Revision
No. 1 Version 1.0 Release Date Mar.-14- 2005 Revision Original release

Copyright

Copyright 2005 LiteOn Technology Corp. All rights reserved. This manual may not, in whole or in part, be copied, photocopied, reproduced, translated, or converted to any electronic machine readable form without prior written permission of LiteOn Technology Corp. ACER AL1751 Service Manual Printed in Taiwan.

Disclaimer

The information in this guide is subject to change without notice. Acer Incorporated makes no representations or warranties, either expressed or implied, with respect to the contents hereof and specifically disclaims any warranties of merchantability or fitness for any particular purpose. Any Acer Incorporated software described in this manual is sold or licensed "as is". Should the programs prove defective following their purchase, the buyer (and not Acer Incorporated, its distributor, or its dealer) assumes the entire cost of all necessary servicing, repair, and any incidental or consequential damages resulting from any defect in the software.
Acer is a registered trademark of Acer Corporation. Intel is a registered trademark of Intel Corporation. Pentium and Pentium II/III are trademarks of Intel Corporation. Other brand and product names are trademarks and/or registered trademarks of their respective holders.

Trademarks

LiteOn is a registered trademark of LiteOn Technology Corp. All other trademarks are property of their respective owners.

Conventions

The following conventions are used in this manual: Screen messages NOTE WARNING CAUTION IMPORTANT Denotes actual messages that appear on screen. Gives bits and pieces of additional information related to the current topic. Alerts you to any damage that might result from doing or not doing specific actions. Gives precautionary measures to avoid possible hardware or software problems. Remind you to do specific actions relevant to the accomplishment of procedures.

Preface

Before using this information and the product it supports, please read the following general information. 1. This Service Guide provides you with all technical information relating to the BASIC CONFIGURATION decided for Acer's "global" product offering. To better fit local market requirements and enhance product competitiveness, your regional office MAY have decided to extend the functionality of a machine (e.g. add-on card, modem, or extra memory capability). These LOCALIZED FEATURES will NOT be covered in this generic service guide. In such cases, please contact your regional offices or the responsible personnel/channel to provide you with further technical details. 2. Please note WHEN ORDERING FRU PARTS, that you should check the most up-to-date information available on your regional web or channel. If, for whatever reason, a part number change is made, it will not be noted in the printed Service Guide. For ACER-AUTHORIZED SERVICE PROVIDERS, your Acer office may have a DIFFERENT part number code to those given in the FRU list of this printed Service Guide. You MUST use the list provided by your regional Acer office to order FRU parts for repair and service of customer machines.
Warning: (For FCC Certified Models)
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: 1. Reorient or relocate the receiving antenna. 2. Increase the separation between the equipment and receiver. 3. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. 4. Consult the dealer or an experienced radio/TV technician for help.

Notice:

1. The changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 2. Shielded interface cables and AC power cord, if any, must be used in order to comply with the emission limits. 3. The manufacturer is not responsible for any radio or TV interference caused by unauthorized modification to this equipment. It is the responsibility of the user to correct such interference. As an ENERGY STAR Partner our company has determined that this product meets the ENERGY STAR guidelines for energy efficiency.

Warning:

To prevent fire or shock hazard, do not expose the monitor to rain or moisture. Dangerously high voltages are present inside the monitor. Do not open the cabinet. Refer servicing to qualified personnel only.

Precautions

Do not use the monitor near water, e.g. near a bathtub, washbowl, kitchen sink, laundry tub, swimming pool or in a wet basement. Do not place the monitor on an unstable trolley, stand, or table. If the monitor falls, it can injure a person and cause serious damage to the appliance. Use only a trolley or stand recommended by the manufacturer or sold with the monitor. If you mount the monitor on a wall or shelf, use a mounting kit approved by the manufacturer and follow the kit instructions. Slots and openings in the back and bottom of the cabinet are provided for ventilation. To ensure reliable operation of the monitor and to protect it from overheating, be sure these openings are not blocked or covered. Do not place the monitor on a bed, sofa, rug, or similar surface. Do not place the monitor near or over a radiator or heat register. Do not place the monitor in a bookcase or cabinet unless proper ventilation is provided. The monitor should be operated only from the type of power source indicated on the label. If you are not sure of the type of power supplied to your home, consult your dealer or local power company. The monitor is equipped with a three-pronged grounded plug, a plug with a third (grounding) pin. This plug will fit only into a grounded power outlet as a safety feature. If your outlet does not accommodate the three-wire plug, have an electrician install the correct outlet, or use an adapter to ground the appliance safely. Do not defeat the safety purpose of the grounded plug. Unplug the unit during a lightning storm or when it will not be used for long periods of time. This will protect the monitor from damage due to power surges. Do not overload power strips and extension cords. Overloading can result in fire or electric shock. Never push any object into the slot on the monitor cabinet. It could short circuit parts causing a fire or electric shock. Never spill liquids on the monitor. Do not attempt to service the monitor yourself; opening or removing covers can expose you to dangerous voltages and other hazards. Please refer all servicing to qualified service personnel To ensure satisfactory operation, use the monitor only with UL listed computers which have appropriate configured receptacles marked between 100 - 240V AC, Min. 3.5A. The wall socket shall be installed near the equipment and shall be easily accessible. For use only with the attached power adapter (output 12V DC) which have UL, CSA listed license

Special Notes On LCD Monitors
The following symptoms are normal with LCD monitor and do not indicate a problem.
Due to the nature of the fluorescent light, the screen may flicker during initial use. Turn off the Power Switch and then turn it on again to make sure the flicker disappears. You may find slightly uneven brightness on the screen depending on the desktop pattern you use. The LCD screen has effective pixels of 99.99% or more. It may include blemishes of 0.01% or less such as a missing pixel or a pixel lit all of the time. Due to the nature of the LCD screen, an afterimage of the previous screen may remain after switching the image, when the same image is displayed for hours. In this case, the screen is recovered slowly by changing the image or turning off the Power Switch for hours.

Table Of Contents

Chapter 1 Monitor Features Introduction Electrical Requirements LCD Monitor General Specification LCD Panel Specification Block Diagram Main Board Diagram Software Flow chart Main Board Layout Front Bezel Rear Bezel Adjusting the picture LOGO Chapter 2 Machine Disassembly Chapter 3 Troubleshooting Chapter 4 Connector Information Chapter 5 FRU (Field Replacement Unit) List Exploded Diagram Chapter 6 Schematic Diagram Top Power Input Scaler Panel interface Mpu Adapter Board Inverter Board 51 52

Chapter 1

Monitor Features Introduction Scope
This specification defines the requirements for the 17 MICRO-PROCESSOR based Multi-mode supported high resolution color LCD monitor. This monitor can be directly connected to general 15 pin D-sub VGA connector and 24 pin DVI connector. It also supports VESA DPMS power management and plug & play function. There is a build-in stereo audio amplifier with OSD control to drive a pair of speakers.

Description

The LCD monitor is designed with the latest LCD technology to provide a performance oriented product with no radiation. This will alleviate the growing health concerns. It is also a space saving design, allowing more desktop space, and comparing to the traditional CRT monitor, it consumes less power and gets less weight in addition MTBF target is 50k hours or more.
Chart of AL1751 Panel Signal Interface Sync Type Color Temp User Adjust DDC Speaker Headphone Jack Microphone Jack USB Hub Tilt / Swivel 17" SEC LTM170EU-L21 D-SUB DVI Separate / Compatible Support DDC2B 1.5W + 1.5W (Rated power) 3.5mm stereo phone jack, green color No Not support Yes / No

Electrical Requirements

Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified. Ambient light Viewing distance Warm up time All specifications Fully functional Measuring equipment Control settings User brightness control User contrast control : : : : : : : Dark room 40 cm for LCD performance, 20 cm for LCD failures 30 minutes 5 seconds Chroma 7120 signal generator or equivalent, directly Connected to the monitor under test. Minolta CA100 photometer, or equivalent Set to Factory preset value (cut off raster) T Set to factory preset value, which allows that the brightest two of 32 linear distributed gray-scales (0 700mv) can be distinguished.
User red/white balance, Green/white balance and Blue/white balance control Power input Ambient temperature Analog input mode

: : : :

In the center (unless otherwise specified) 230V 5 20+5 1280x1024, 60 Hz, all white
Measurement systems The units of measure stated in this document are listed below: 1 gamma = 1 nano tesla 1 tesla = 10,000 gauss cm = in x 2.54 lb = kg x 2.2 degrees F = [C x 1.8] + 32 degrees C = [F - 32]/1.8 u' = 4x/(-2x + 12y + 3) v' = 9y/(-2x + 12y + 3) x = (27u'/4)/[(9u'/2) - 12v' + 9] y = (3v')/[(9u'/2) - 12v' + 9] nits = cd/(m2) = Ft-L x 3.426 lux = foot-candle x 10.76
LCD Monitor General Specification
Panel type : 17 active matrix color TFT LCD SAMSUNG LTM170EU-L21 Display size Display mode Pixel pitch Display dot Pixel clock Contrast ratio Brightness Response time (Tr/Tf) Display color Viewing angle Pc interface : : : : : : : : : : 337.92mm (H) Normally white 0.264mm(H) 1280 x (RGB) 135 MHz 700:cd/m2 8ms (Tr=2ms, Tf=6ms) 16.2M(RGB 8 bit Data) H:150 / V:135 ( typ) RGB Analog Interface Digital interface Signal connector : D-Sub 15pin DVI-D 24pin Interface frequency : Horizontal Frequency 30KHz ----83KHz Vertical Frequency Plug & play Power Input voltage Total output power : : : 55Hz ------75Hz 0.264mm(V) 1024 270.336mm(V)
VESA DDC2B, VESA DPMS 50 3Hz, 60 3Hz, 100 VAC to 240VAC 45Watt max.

LCD Panel Specification

LCD Panel Model (SAMSUNG LTM170EU-L21) Display Type active matrix color TFT LCD Resolution 1280x1024 pixels Display Dot 1280x (RGB) x 1024 Display Area 337.92mm(H) x 270.336mm(V) Pixel Pitch 0.264mm(H) x 0.264mm(V) Display Color 16.2M (true) Lamp Frequency 80kHz (Max) Lamp Current 7.0 mArms (Max) Weight 1950g (Max) Optical Specifications

IL = 6.5mArms ITEM Contrast Ratio (Center of screen) Response Time Rising Falling Ta = 25 2C Symbol C/R Tr TF YL RX RY GX GY BX BY WX WY L R H L BUNI CR 10 =0, =0 Normal Viewing Angle VDD = 5V Condition FV = 60Hz MIN. 500 2.0 6.0.620 0.300 0.270 0.570 0.120 0.050 0.283 0.50 FDCLK = 54MHz TYP. 0.650 0.330 0.300 0.600 0.150 0.080 0.313 0.60 MAX. 0.680 0.360 0.330 0.630 0.180 0.110 0.343 0.% Degrees msec cd/m2 UNIT
Luminance of white (Center of screen) Red Color Chromaticity (CIE 1931) Green Blue White Hori. Ver.

Viewing Angle

Brightness Uniformity (9 Points)

Supported Timing

VESA MODES Horizontal Nominal Sync Frequenc Polarit Total y y +/0.5kHz 800 x 525 31.469 N 832 x 520 37.861 N 840 x 500 37.500 N 1024 x 625 35.156 N/P 1056 x 628 37.879 P 1040 x 666 48.077 P 1056x625 46.875 P 1344x806 48.363 N 1328x806 56.476 N 1312x800 60.023 P 1600X900 67.5khz P 1688x1066 63.981 P 1688x1066 79.976 P Vertical Nomina Sync Nominal l Polarity Pixel Freq. Clock +/- 1 Hz (MHz) 59.940 72.809 75.00 56.250 60.317 72.188 75.000 60.004 70.069 75.60.020 75.025 N N N N/P P P P N N P P P P 25.175 31.500 31.500 36.000 40.000 50.000 49.500 65.000 75.000 78.750 108.000 108.000 135.000

Resolution

640x480@60Hz 640x480@72Hz 640x480@75Hz 800x600@56Hz 800x600@60Hz 800x600@72Hz 800x600@75Hz 1024x768@60Hz 1024x768@70Hz 1024x768@75Hz 1152x864@75Hz 1280x1024@60H z 1280x1024@75H z

DOS DOS XGA VGA SVGA

720x400@70Hz 640x350@70Hz 1024x768@72Hz 640x480@67Hz 832x624@75Hz 1024x768@60H z 1024x768@75H z
IBM MODES Horizontal 900 x 449 31.469 N 800 x 449 31.469 P 1304 x 798 57.515 P MAC MODES 864x525 35.000 N 1152x667 1312x813 1328x804 49.725 48.780 60.241 N N N
Vertical 70.087 P 70.087 N 72.1 P 66.667 74.551 60.001 74.927 N N N N
28.322 25.175 75.000 30.240 57.2832 64.000 80.000

Monitor Block Diagram

The LCD MONITOR will contain a main board (include: keypad board and audio board), an inverter board, adapter which house the flat panel control logic, brightness control logic and DDC. The Inverter board will drive the backlight of panel. The adapter will provide the 12V DC-power to inverter/power board and main board.

CCFL Drive.

Flat Panel and CCFL backlight

Inverter board

Main Board (Include: Audio board, keyboard)
RS232 Connector For white balance adjustment in factory mode

Adapter

AC-IN 100V-240V

HOST Computer

Video signal, DDC

Main Board Diagram

EEPROM 24C16

LCD Interface

Scaler TSU56AK PQFP-128 (Include: ADC, OSD etc)

Crystal 14.318MHZ

OSD Control Interface (Keypad)

DVI Connector

D-SUB Connector

EEPROM 24C02

Software Flow Chart
1) 2) 3) 4) MCU initialize. Is the eeprom blank? Program the eeprom by default values. Get the PWM value of brightness from eeprom. Check the pin PANEL1 and PANEL2 to tell which panel to get with it. 5) Is the power key pressed? 6) Clear all global flags. 7) Are the AUTO and SELECT keys pressed? 8) Enter factory mode. 9) Saving the power key status into eeprom. Turn on the LED and set it to green color. Scalar initializes. 10) In standby mode? 11) Update the lifetime of back light. 12) Check the analog and digital port, are there any signals coming? 13) Does the scalar send out a interrupt request? 14) Wake up the scalar. 15) Are there any signals coming from analog or digital port? 16) Display " No Input Signal " message. And go into standby mode after the message disappear. 17) Program the scalar to be able to show the coming mode. 18) Process the OSD display. 19) Read the keyboard. Is the power key pressed?

Main Board Layout

Location U301 U302 U401 U402 U403 U701 U702 CN301 CN302 CN402 CN601 CN602 CN603 CN701 CN702 U601 X401 X402
Part NO 56L56L56L 56L1125137SZB 56L56L 56L 88L 35315F H 88L 35424F H 33L801724A H 33G3802 4H 88L 30214K 88L 30211K 88L 304 1C 33G3802 6H 56L 93L 93L H
Description M24C02-WMN6T SMT M24C02-WMN6T SMT TSU56AK PQFP-128 W78E65-40P AT24C16AN-10SI-2.7 SI-8050SD AZ1117D-1.8 D-SUB 15PIN DVID CONN. 24P FEMALE PIN HEADER 24P 2.0mm WAFER 4P RIGHT ANGLE PHONE JACK PHONE JACK power jack WAFER 6P RIGHT ANGLE PI TDA7496L BY ST CRYSTAL 14.318MHzHC-49U 20MHZ

Front Bezel

Rear Bezel

Adjusting the Picture

b. The Description For Control Function
When the monitor is power on, the LOGO will be showed in the center, and disappear slowly.
How To Optimize The DOS-Mode Plug And Play Plug & Play DDC1/2B Feature This monitor is equipped with VESA DDC1/2B capabilities according to the VESA DDC STANDARD. It allows the monitor to inform the host system of its identity and, depending on the level of DDC used, communicate additional information about its display capabilities. The communication channel is defined in two levels, DDC1 and DDC2B. The DDC1 is a unidirectional data channel from the display to the host that continuously transmits EDID information. The DDC2B is a bidirectional data channel based on the IC protocol. The host can request EDID information over the DDC2B channel. This monitor will appear to be non-functional if there is no video input signal. In order for this monitor to operate properly, there must be a video input signal. This monitor meets the Green monitor standards as set by the Video Electronics Standards Association (VESA) and/or the United States Environmental Protection Agency (EPA) and The Swedish Confederation Employees (NUTEK). This feature is designed to conserve electrical energy by reducing power consumption when there is no video-input signal present. When there is no video input signal this monitor, following a time-out period, will automatically switch to an OFF mode. This reduces the monitor's internal power supply consumption. After the video input signal is restored, full power is restored and the display is automatically redrawn. The appearance is similar to a "Screen Saver" feature except the display is completely off. The display is restored by pressing a key on the keyboard or clicking the mouse. Using The Right Power Cord The accessory power cord for the Northern American region is the wallet plug with NEMA 5-15 style and is UL listed and CSA labeled. The voltage rating for the power cord shall be 125 volts AC. Supplied with units intended for connection to power outlet of personal computer: Please use a cord set consisting of a minimum No. 18 AWG, type SJT or SVT three conductors flexible cord. One end terminates with a grounding type attachment plug, rated 10A, 250V, CEE-22 male configuration. The other end terminates with a molded-on type connector body, rated 10A, 250V, having standard CEE-22 female configuration. Please note that power supply cord needs to use VDE 0602, 0625, 0821 approval power cord in European counties.

Chapter 2

Machine Disassembly
This chapter contains step-by-step procedures on how to assemble the monitor for maintenance. Disassembly Procedure 1. Remove two screws to release back cover. (Fig 1). 2. Remove the base stand (Fig 2)
Fig2 3. Remove four screws to release front bezel. (Fig 3) 4. Remove the hinge cap. (Fig 4)
Fig 4 5. Remove eleven screws to release top cover and bottom cover. (Fig 5) 6. Remove the main board. (Fig 6)
Fig 6 7.Remove six clamps to release shield and the main board. (Fig 7) 8.Remove the main frame. (Fig 8) 9.Remove the inverter board. (Fig 9)

Chapter 3

Troubleshooting
This chapter provides troubleshooting information for the AL1751: 1. No power

No power

Press power key and look if the picture is normal NG
Measure 12V input voltage NG
Check the adapter section

Measure U702 PIN2=5V?

Replace U702
X402 oscillate waveform is normal NG OK Replace U402 NG Replace U401 Replace X402
2. No picture (LED is orange)

No picture

NG Key is under control? OK X401 oscillate waveform is normal NG Replace X401
Check if the sync signal from computer is output and video cable is connected normally

NG OK Replace U401

Input the sync signal of computer, or change the cable
3. Panel Power Circuit Measure Q703 base is high level? OK NG X402 oscillate waveform is normal NG OK Replace U402 Check Correspondent component. NG OK Replace U401 Replace PANEL NG Replace X402
Check Q703 and Q704 are broken or CN503 solder?

4. Keypad Board

OSD is unstable or not working
NG Is Keypad board connecting normally OK Is Button Switch normally OK NG Is Keypad board normally Replace Keypad Board NG Replace Button Switch Connect Keypad Board

5. Inverter Board

No Backlight Check CN801 Pin1 =12V OK NG Check adapter
Check ON/OFF signal OK NG Check Interface board
Check U801 PIN3 voltage is normal? OK NG Check Q804,Q803,Q802 circuit Check U801 PIN18 triangular wave is normal NG Check C816, C821
Check U801 PIN11, 12, 19, 20 OK NG Check U801,Q801, Q805, Q806, Q807

Check D801-D804, D811, D805, D810, D808

6.No Audio

Mute and volume setting is ok? NG OK Check power supply of U601 is 12V?

Reset mute and volume

NG Check connecting is ok? OK NG Check input signal of U601is ok? Reconnect
Check correspondent component

Replace U601

NG Replace speaker

Chapter 4

Connector Information
The following figure shows the connector locations on the monitor board:
15 Pin Color Display Signal Cable (D-sub)
PIN NO. 1. 2. 3. 4. 5. 6. 7. 8.
DESCRIPTION Red Green Blue Monitor Ground DDC-Return R-Ground G-Ground B-Ground
PI N NO. 9. 10. 11. 12. 13. 14. 15.
DESCRIPTION +5V Logic Ground Monitor Ground DDC-Serial Data H-Sync V-Sync DDC-Serial Clock
24 Pin Color Display Signal Cable (DVI)
PIN NO. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12.
DESCRIPTION TMDS Data2TMDS Data2+ TMDS Data 2/4 Shield TMDS Data4TMDS Data4+ DDC Clock DDC Data Analogue Vertical Sync TMDS Data1TMDS Data1+ TMDS Data 1/3 Shield TMDS Data3-
PI N NO. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24.
DESCRIPTION TMDS Data3+ +5V Power Ground Hot Plug Detect TMDS Data0TMDS Data0+ TMDS Data 0/5 Shield TMDS Data5TMDS Data5+ DDC Clock Shield TMDS Clock+ DDC TMDS Clock-

Chapter 5

FRU (Field Replaceable Unit) List
This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of AL1922.Refer to this chapter whenever ordering for parts to repair or for RMA (Return Merchandise Authorization).
NOTE: Please note WHEN ORDERING FRU PARTS, that you should check the most up-to-date information available on your regional web or channel (http://aicsl.acer.com.tw/spl/). For whatever reasons a part number change is made, it will not be noted in the printed Service Guide. For ACER AUTHORIZED SERVICE PROVIDERS, your Acer office may have a DIFFERENT part number code from those given in the FRU list of this printed Service Guide. You MUST use the local FRU list provided by your regional Acer office to order FRU parts for repair and service of customer machines. NOTE: To scrap or to return the defective parts, you should follow the local government ordinance or regulations on how to dispose it properly, or follow the rules set by your regional Acer office on how to return it.

DDC_WP 7

VCC5V 2
Size B Date: Document Number Rev
Wednesday, January 19, 2005 Sheet 4 of 8
VCC3.3 FBVCC3.OHM C402 10uF/16V VAD VPLL VDVI VDPLL VPO VDD
VPO 3 + C403C404C405C406C407C408C409C410 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF VCC1.8
VCC1.8 FBOHM C411 10uF/16V
+ C412C413C414C415 0.1uF 0.1uF 0.1uF 0.1uF
126 VDDP VDDP VDDP VDDP VDDP VDDP VDDP

AVDD_MPLL

AVDD_PLL

AVDD AVDD

AVDD_DVI AVDD_DVI

VDDC VDDC VDDC VDDC

97 117
RIN GNDR GIN GNDG SOG BIN GNDB HSYNC VSYNC
RIN0 RIN0M GIN0 GIN0M SOGIN0 BIN0 BIN0M HSYNC0 VSYNC0 DDC1_CLK/GPO8 DDC1_DAT/GPO7
LVA3P LVA3M LVACKP LVACKM LVA2P LVA2M LVA1P LVA1M LVA0P LVA0M

112 113

PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PA8 PA9

PA[0.9]

VAA1 FB404 PA[0.9] VAAOHM C416 10uF/16V

+ C417C418 0.1uF 0.1uF

R+ RG+ GB+ BCLK+ CLKR1/16W

R+ RG+ GB+ BCK+ CKREXT

66 C401 0.1uF 67

REFP REFM

NC/LVB3P NC/LVB3M NC/LVBCKP NC/LVBCKM NC/LVB2P NC/LVB2M NC/LVB1P NC/LVB1M NC/LVB0P NC/LVB0M
PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 PB8 PB9

PB[0.9]

VAAVAA2

FBOHM C419 10uF/16V

MST8031/8131

+ C420 0.1uF

7 CSZ 7 SCL 7 SDA 7 HWRESET 7 INT

R443 R444

2.2K 1/16W 0 1/16W

72 C450 NC/100P 33

CSZ SCL SDA HWRESETZ INT
VCC5V 3 R403 R404 R405 R406 10K 10K 1/16W 1/16W 10K 10K 1/16W 1/16W VCC3.3 VAA3

FBOHM C421 10uF/16V

C449 NC/100P

+ C422C423 0.1uF 0.1uF

Volume
FBOHM C425 100pF R401 10K C426 1uF/25V

3 1/16W

PWM0 PWM1 XIN ADO/NC AD1/NC AD2/NC AD3/NC BUS TYPE/NC
C424 22pF X401 14.318MHz C427 22pF C428 0.1uF

AD0 AD1 AD2 AD3

R407 4.7K 1/16W 3 VAA4

FBOHM C429 10uF/16V

XOUT BYPASS AVSS_LPLL

+ C430 0.1uF

AVSS_MPLL
R408 NC AVSS_PLL AVSS_DVI AVSS_DVI AVSS_DVI 19 GNDC 86 GNDC GNDC GNDC GNDP GNDP GNDP GNDP GNDP GNDP GNDP

AVSS AVSS AVSS

R408 Direct Bus 3-WIRE NC 4.7K
R407 4.7K NC Size B Date: Title

Document Number Rev

SCALER
Wednesday, January 19, 2005 Sheet 5 of 8
PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7
LVA3P LVA3M LVACKP LVACKM LVA2P LVA2M LVA1P LVA1M LVA0P LVA0M LVB3P LVB3M LVBCKP LVBCKM LVB2P LVB2M LVB1P LVB1M LVB0P LVB0M
CN402 LVB0M LVB1M LVB2M LVBCKM LVB3M LVA0M LVA1M LVA2M LVACKM LVA3M RXO0RXO1RXO2RXOCRXO3RXE0RXE1RXE2RXECRXERXO0+ RXO1+ RXO2+ RXOC+ RXO3+ RXE0+ RXE1+ RXE2+ RXEC+ RXE3+ LVB0P LVB1P LVB2P LVBCKP LVB3P LVA0P LVA1P LVA2P LVACKP LVA3P

Wednesday, January 19, 2005 Sheet 7 of 8

VCC12V_AUDIO

3 VCC12V_AUDIO + + C603 0.1uF
C601 220uF/16V U601 TDA7496L

C602 220uF/16V

CNPHONEJACK R601 18K R602 18K 1/16W AUDIO_SD AUDIO_MU 1/16W C604 C606 0.47uF/16V 0.47uF/16V 12 INL INR
OUTL OUTR SVR VAROUT_R VAROUT_L

5 + R603 1K 1/16W

C605 C607

220uF/16V 220uF/16V

OUT_L OUT_R

VOLUME STBY MUTE

GND GND GND GND GND GND GND
C609 1uF C612 100pF 20K R605 1/16W C611 100pF 20K R606 1/16W

C610 1uF

R607 Volume 220K C613 0.1uF 1/16W 5

R608 R609

OUT_R OUT_L

EAR PHONEJACK

SPEAKER CONN Title

C608 220uF/16V

R604 1K 1/16W
Size A4 Date: Document Number <Doc> Wednesday, January 19, 2005 Sheet 8 of 8 Rev <RevCode>

Adapter Board

Inverter Board
CN801 VIN VIN ON/OFF DIM GND GND R801 1K 1/16W + ZD801 RLZTE-11 5.6B 2 C845 220uF/16V Q804 DTC144WKA ZD803 C848 220uF/25V R1/8W C801 1uF/25V Q802 DTA144WKA Q803 PMBS3904 VDD RLZTE-11 5.6B 1/16W C802 1uF/25V C803 1uF/25V R802 10K 1/10W 1 Q801 SP8M1 G2P D2P S2P D2P G1N D1N S1N D1N C807 2.2uF/25V C808 2.2uF/25V C809 22pF/3KV 2 D803 BAV3 R806 6.2M 1/2W C810 5.6pF/3KV C806 5.6pF/3KV 2 D801 BAVCONN R811 1/10W CN803 C804 2.2uF/25V T801 80LL17T-16-LC C805 22pF/3KV CONN F801 4A/24V CN802

ZD802 RLZTE-11 5.6B 1 2

R804 10K 1/10W

33L8009-6N-H

2 1/16W 1

IC_DIM

C811 0.1uF/25V R807 N.C(0
G2P D2P S2P D2P G1N D1N S1N D1N Q805 SP8M3
DIM=0~3.3V iout=3.5~7.5mA R809 220K 1/16W 1/16W) R810 N.C(110K R812 C814 0.1uF/25V 1/16W 1/16W)
C812 1uF/25V C813 1uF/25V
C815 0.1uF/25V C817 1uF/25V 10 R813 1/8W 1 C818 0.47uF/25V C821 1uF/25V OVP C823 0.1uF/25V C826 0.01uF 10
0.047uF U801 CTIMR OVP ENA SST VDDA GNDA REF RT1 FB CMP OZ1060G R822 N.C (33K R821 390K 1/16W VDD R823 43K 1/16W C834 1uF/25V R825 1K 1/16W 1M R824 1/16W D806 LL4148 Q808 RK7002 1K 1/16W R827 6.2M 1/2W R828 N.C R829 NC OVP 1 D805 BAV3 C838 NC R832 1/16W R833 NC 0.0047uF CR831 1/10W BAVD810 OPT4 R826 FBFB1 D811 BAV99 D808 BAV3 CONN C835 1uF/25V C836 1uF/25V 3 OPTC830 22pF/3KV C831 5.6pF/3KV 2 CONN C832 22pF/3KV C833 5.6pF/3KV CN805 1/16W) NDR_B PDR_A CT RT PGND LCT DIM LPWM PDR_C NDR_D IC_DIM C824 0.1uF/25V C847 0.047uF G2P D2P S2P D2P G1N D1N S1N D1N Q806 SP8M8 C829 2.2uF/25V 1 C825 2.2uF/25V C827 2.2uF/25V OPT2 CN804 R1/10W R817 56K 1/16W 5.6K C822 0.0047uF(309HZ) R814 NC OVP C816 220pF 1 D802 BAV3 D804 C819 NC R816 NC C820 0.0047uF 1 BAV99 R1/10W FB1

R815 1/16W

R842 62K 1/16W)

R818 9.1K 1/16W

R841 1/16W)

C828 NC R840 39K 1/16W

G2P D2P S2P D2P G1N D1N S1N D1N Q807 SP8M3