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Acer AL1914 Service Guide
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Service Guide Version and Revision
No. 1 Version 1.0 Release Date Apr.05.2005 Revision Original release
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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 AL1914 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.
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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. Reminds 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.
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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.
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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. 5A. The wall socket shall be installed near the equipment and shall be easily accessible.
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Special Notes On LCD Monitors
The following symptoms are normal with LCD monitor and do not indicate a problem.
Notes
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.
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Table Of Contents
Chapter 1 Monitor Features Induction Electrical Requirements LCD Monitor General Specification LCD Panel Specification Support Timing Block Diagram Main Board Diagram Software Flow chart Main Board Layout Front Bezel Rear Bezel Chapter 2 Operating Instructions External Controls Front Panel Controls Adjusting the picture Hot-Key Menu OSD Message LOGO Chapter 3 Chapter 4 Chapter 5 Chapter 6 Machine Disassembly Troubleshooting Connector Information FRU (Field Replacement Unit) List Exploded Diagram Chapter 7 Schematic Diagram Analog TSU16AK LVDS Key Board Connector Main board power supply Audio Power Board
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8 8 9 10 11 12 14 15 16 17 21 22 23 23 24 25 28 28 29 30 39 46 47 48 50 50 51 52 53 54 55 56
Chapter 1
Monitor Features Introduction Scope
This specification defines the requirements for the 19" 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. 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 AL1914 19" Samsung LTM190EX-L01 19" AU M190EN04 V5 Signal Interface Sync Type Color Temp User Adjust DDC Speaker Headphone Jack Microphone Jack USB Hub Tilt / Swivel Height Adjust
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Panel
D-SUB Separate / Compatible Support DDC2B 1.5W x2 (Rated power) No No Not support Yes / No Option
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 User red/white balance, Green/white balance and Blue/white balance control Power input Ambient temperature Analog input mode : : : : : 225 lux 40 cm in front of LCD panel 30 minutes 5 seconds Chroma 7120 signal generator or equivalent, directly Connected to the monitor under test. Maximum (unless otherwise specified) Typical (unless otherwise specified)
: :
: : : :
In the center (unless otherwise specified) 100Vac or 264Vac 20+5 1280 x1024 /75 Hz
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
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LCD Monitor General Specification
Panel type 19 " active matrix color TFT LCD SAMSUNG LTM190EX-L01 Display size Display mode 376.32mm (H) × 301.056mm(V) VGA 640 × 480 (60//72/75 Hz) SVGA 800 × 600 (56/60/72/75 Hz) XGA 1024 × 768 (60/70/75 Hz) SXGA 1280 × 1024 (60//75 Hz) Pixel pitch Display dot Pixel clock Contrast ratio Brightness Response time (Tr/Tf) Display color Viewing angle Pc interface 0.294mm(H) × 0.294mm(V) 1280 x (RGB) × 1024 25.2 135.0MHz 500:1 250 cd/m2 8ms (Tr=1.7ms, Tf=6.3ms) 16.7M(RGB 8 bit Data) H:140 / V:140 (typ) RGB Analog Interface Digital interface (Only Dual-Input Model) Signal connector Interface frequency D-Sub 15pin Horizontal Frequency 30KHz ----80KHz Vertical Frequency Plug & play Power Input voltage Total output power VESA DDC2B 47-63HZ, 100 VAC to 264VAC ±10% 60 Watt max. 55Hz ------75Hz
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LCD Panel Specification
LCD Panel Model (SAMSUNG LTM190EX-L01) Display Type active matrix color TFT LCD Resolution 1280x1024 pixels Display Dot 1280x (RGB) x 1024 Display Area 376.32mm(H) x 301.056mm(V) Pixel Pitch 0.294mm(H) x 0.294mm(V) Display Color 16.7M (true) Lamp Frequency 80kHz Lamp Current 7.0 mArms (typ) Weight 2750g (typ) Optical Specifications
ITEM Contrast Ratio (Center of screen) Response Time at Ta Rising Falling
Symbol CR TR TF YL RX RY GX GY BX BY WX WY L R H L BUNI F Ta = 25 ± 2°C
Condition
MIN. 450 -
TYP. 700 1.7
MAX. 3 9 -
UNIT
6.3
300 0.640 0.329 0.300 0.600 0.150 0.060 0.313 0.329 80 75 75 75 -
msec cd/m2
Luminance of white (Center of screen) Red Color Chromaticity (CIE) Green Blue White Hori. Vert.
=0, =0 Normal Viewing Angle
250 0.610 0.229 0.270 0.570 0.120 0.030 0.283 0.299 65
0.670 0.359 0.330 0.630 0.180 0.090 0.343 0.359
Degrees
Viewing Angle
CR10
65 65 -
Brightness Uniformity Flicker IL = 7.5mArms
25
8
% %
VDD = 5V
FV = 60Hz
FDCLK = 54MHz
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Supported Timing VESA MODES
Horizontal Nominal Sync Frequenc Polarit y y +/0.5kHz 31.469 N 37.861 N 37.500 N 35.156 N/P 37.879 P 48.077 P 46.875 P 48.363 N 56.476 N 60.023 P 67.5khz P 63.981 P 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 75.029 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
Mode
Resolution
Total
VGA
SVG A
XGA
SXG A
640x480@60Hz 640x480@72Hz 640x480@75Hz 800x600@56Hz 800x600@60Hz 800x600@72Hz 800x600@75Hz 1024x768@60Hz 1024x768@70Hz 1024x768@75Hz 1152x864@75Hz 1280x1024@60Hz 1280x1024@75Hz
800 x 525 832 x 520 840 x 500 1024 x 625 1056 x 628 1040 x 666 1056x625 1344x806 1328x806 1312x800 1600X900 1688x1066 1688x1066
IBM MODES
DOS DOS XGA 720x400@70Hz 640x350@70Hz 1024x768@72Hz 900 x 449 800 x 449 1304 x 798 Horizontal 31.469 N 31.469 P 57.515 P Vertical 70.087 P 70.087 N 72.1 P 28.322 25.175 75.000
MAC MODES VGA
SVGA XGA 640x480@67Hz 832x624@75Hz 1024x768@60Hz 1024x768@75Hz 864x525 1152x667 1312x813 1328x804 35.000 49.725 48.780 60.241 N N N N 66.667 74.551 60.001 74.927 N N N N 30.240 57.2832 64.000 80.000
.
Support Modes There will be 20 total support modes to accommodate the above mode and other video
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modes within the frequency range of the monitor. 85Hz refresh rate Support Monitor should display 85Hz refresh rate mode as emergency mode. Monitor should display " Out of Range" warning menu at this mode. Video Input Connector PIN NO. 1. 2. 3. 4. 5. 6. 7. 8. DESCRIPTION Red Green Blue Monitor Ground DDC-Return R-Ground G-Ground B-Ground VGA Connector layout 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
1 6 11
5 10 15
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Monitor Block Diagram
The LCD MONITOR will contain a main board, a power board (include adapter and inverter), keypad board and audio board which house the flat panel control logic, brightness control logic and DDC. The Inverter board will drive the backlight of panel.
CCFL Drive.
Flat Panel and CCFL backlight
Power board (Include: adapter, inverter)
Main Board
RS232 Connector For white balance adjustment in factory mode
Audio board
Keyboard
AC-IN 100V-240V HOST Computer Video signal, DDC
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Main Board Diagram
LCD Interface EEPROM 24C16 Scaler TSU16AK (Include: ADC, OSD etc) MCU Crystal 14.318MHZ
OSD Control Interface (Keypad)
D-SUB Connector
EEPROM 24C02
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Software Flow Chart
1
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? 1) 2) 3) 4)
2 N 4
Y
3
5 Y 6
N
7 Y 9
N
8
10 Y N 12 Y 14
N
11
13 Y 15 Y 17
N
N
16
18
N
19 Y
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Main Board Layout
Label CN301 U202 U301 U401 U601 U602 U603 X601 X401
Part number 88L 35315F HS 56L 563 7 56L1133 34 56L 562 86 56L1125137SC9 56L1133 56 56L 643 5A 93G 22 55 H 93G 22 53
Description D-SUB 15PIN FEMALE AIC1084-33CM M24C02-WMN6T SMT Tsu16ak pqfp-128 W78E65P-40 M24C16-WMN6T/W SO-8 MAX810STR SOT-23 20MHZ/20PF/49US 14.318MHzHC-49US
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The step between front bezel and back cover shall be within specification. Top and Bottom Back cover & Bezel concavity 0.8mm A 1.3 mm Left and Right Back cover & Bezel concavity 0.8mm A 1.3 mm
Back Cover & Hinge Cover concavity 0mm B 0.5mm
Base & Neck concavity 0mm C 0.6mm
B
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Top and Bottom Back cover & Bezel step 0mm D 0.8 mm
Left and Right Back cover & Bezel step 0mm D 0.8 mm
LCD Horizontally
The angle between front bezel and LCD unit in bottom side should not large than 1.0mm.
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The distance of the LCD display unit from left side to right should not large than 4.0mm.
Tilt Base Rotation Tilt up 15 ± 2°/ down 5 ±2° Plastic Material For TCO99 Front Bezel ABS 94HB Back Cover ABS 94HB The Others ABS 94HB For MPRII Front Bezel ABS 94HB Back Cover ABS 94HB The Others ABS 94HB GAP Spec. Gap between panel with bezel is 0 mm < gap < 1.2 mm
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Front Bezel
EXTERNAL CONTROLS FRONT PANEL CONTROL
Item 1. 2. 3.
Description Auto Adjust Key/Exit / Volume
Item 4. 5. 6.
Description MENU/ENTER LED /Power Key
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Rear Bezel
Item 1. 2. 3. Power Cable Signal Cable
Description
Audio cable (Option-only for Audio model)
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Chapter 2
Operating Instructions
Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the monitor. By changing these settings, the picture can be adjusted to your personal preferences. · The power cord should be connected. · Connect the video cable from the monitor to the video card. · Press the power button to turn on the monitor position. The power indicator will light up.
External Controls
Item 1. 2. 3.
Description Auto Adjust Key/Exit / Volume
Item 4. 5. 6.
Description MENU/ENTER LED /Power Key
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Front Panel Control
· Power Button:
Press this button to turn the monitor ON or OFF.
· Menu / Enter :
Activate OSD menu when OSD is OFF or activate/de-activate adjustment function when OSD is ON or Exit OSD menu when in Volume Adjust OSD status.
·
Activates the volume control when the OSD is OFF or navigate through adjustment icons when OSD is ON or adjust a function when function is activated.
· >/Volume:
Activates the volume control when the OSD is OFF or navigate through adjustment icons when OSD is ON or adjust a function when function is activated.
· Auto Adjust button / Exit:
1. When OSD menu is in active status, this button will act as EXIT-KEY(EXIT OSD menu). 2. When OSD menu is in off status, press this button for 2 seconds to activate the Auto Adjustment function. The Auto Adjustment function is used to set the HPos, VPos, Clock and Focus.
· Power Indicator:
Green -- Orange -- NOTES
Power On mode. Off mode
Notes
· Do not install the monitor in a location near heat sources such as radiators or air ducts, or
in a place subject to direct sunlight, or excessive dust or mechanical vibration or shock. · Save the original shipping carton and packing materials, as they will come in handy if you ever have to ship your monitor. · For maximum protection, repackage your monitor as it was originally packed at the factory. · To keep the monitor looking new, periodically clean it with a soft cloth. Stubborn stains may be removed with a cloth lightly dampened with a mild detergent solution. Never use strong solvents such as thinner, benzene, or abrasive cleaners, since these will damage the cabinet. As a safety precaution, always unplug the monitor before cleaning it.
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Adjusting the Picture
a. How to Adjust a Setting 1. 2. 3. 4. 5. Press the MENU-button to activate the OSD window. Press to select the desired function. Press the MENU-button to select the function that you want to adjust. Press < or >to change the settings of the current function. To exit and save, select the exit function. If you want to adjust any other function, repeat steps 2-4.
I. Analog-Only Model
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b. The Description For Control Function Main Menu Icon Sub Menu Item Contrast Brightness Focus Clock H. Position V. Position Warm Cool User / Red User/ Green User / Blue English
Traditional Chinese
Sub Menu Icon
Description Contrast from Digital-register. Backlight Adjustment Adjust Picture Phase to reduce Horizontal-Line noise Adjust picture Clock to reduce Vertical-Line noise. Adjust the horizontal position of the picture. Adjust the vertical position of the picture.
N/A N/A
Recall Warm Color Temperature from EEPROM. Recall Cool Color Temperature from EEPROM. Red Gain from Digital-register. Green Gain Digital-register. Blue Gain from Digital-register.
N/A N/A N/A N/A N/A N/A N/A N/A
Set OSD display language to English. Set OSD display language to Traditional Chinese. Set OSD display language to German. Set OSD display language to French. Set OSD display language to Spain. Set OSD display language to Italian. Set OSD display language to Simplified Chinese. Set OSD display language to Japanese. Adjust the horizontal position of the OSD.
Deutsch Français Español Italiano
Simplified Chinese
Japanese H. Position
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V. Position OSD Timeout
Adjust the vertical position of the OSD. Adjust the OSD timeout.
Main Menu Icon
Sub Menu Item
Sub Menu Icon
Description
Auto Config (Analog-O nly Model) Information
N/A
Auto Adjust the H/V Position, Focus and Clock of picture.
N/A
Show the resolution, H/V frequency and input port of current iput timing. Clear each old status of Auto-configuration and set the color temperature to Cool. Exit OSD
Reset
N/A
Exit
N/A
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Hot-Key Menu
a. Outline
b. The Description For Hot-Key Function Operation Icon When the OSD is closed, press Volume Left or Right button will be Volume Hot-Key Function Item Description Volume of Audio adjustment. The Audio will be Mute when volume=0
OSD Message
a. Outline
b. The Description For OSD Message Item Description
Auto Config When Analog signal input, if User Press Hot-Key "Auto", will show Please Wait this message, and the monitor do the auto config function. Input Not Supported Cable Not Connected No Signal When the Hsync Frequency, Vsync Frequency or Resolution is out of the monitor support range, will show this message. This message will be flying. Analog-Only Model: When the video cable is not connected, will show this message. This message will be flying. Analog-Only Model: When the video cable is connected, but there is no active signal input, will show this message, then enter power saving.
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Logo
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 DDC2B Feature This monitor is equipped with VESA DDC2B 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 DDC2B is a bidirectional data channel based on the I²C 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.
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Chapter 3
Machine Disassembly
This chapter contains step-by-step procedures on how to assemble the monitor for maintenance. Disassembly Procedure Disassemble the base 1. Remove hinge cover. (Fig 1) 2. Remove four screws to release stand base. (Fig 2)
Fig 1
Fig2
30
Disassemble the front cover 1. Remove nine screws to release back cover. (Fig 3) 2. Remove nine screws to release front bezel. (Fig 4) 3. Remove two screws to release keyboard. (Fig 5) 4. Remove connector wire with keyboard and speakers. (Fig 6)
Fig 3
Fig 4
31
Fig 5
Fig6
32
Disassemble the rear bezel
Fig7
Disassemble the shield 1. Remove two screws to release the shield. (Fig 8) 2. Remove the shield as arrow direction.
Fig8
33
Disassemble the audio board 1. Remove two screws to release audio board. (Fig 9) 2. Remove connector wire with audio board and power board. (Fig 10)
Fig9
Fig10
34
Disassemble the main board 1. Remove three screws to release main board. (Fig 11) 2. Remove connector wire with main board and panel. (Fig 12) 3. Remove connector wire with main board and power board. (Fig 13)
Fig11
Fig12
35
Fig13
36
Disassemble the power board 1.Remove five screws to release power board. (Fig 14) 2. Remove connector wire with power board and panel. (Fig 15)
Fig14
Fig15
37
Disassemble the panel 1. Remove four screws (right and left) to release metal frame. (Fig 16)
Fig16
38
Chapter 4
Troubleshooting
This chapter provides troubleshooting information for the AL1914: 1. No power No power
Press power key and look if the picture is normal NG Please reinsert and make sure the AC of 100-240 is normal OK NG Reinsert or check the power section
Measure U201 PIN2=2.5V U202 PIN2=3.3V
OK NG
Measure CN201 PIN5/6=12V? Measure CN201 PIN9/10=5V?
X401 oscillate waveforms are normal
OK
NG
Check power section
Replace U201, U202
OK
Replace U401
NG
Replace X401
39
2. No picture (LED is orange) No picture
Measure U201 PIN2=2.5V U202 PIN2=3.3V
OK NG
Replace U201, U202
X601 oscillate waveforms are normal
OK NG
Replace X601
Check if the sync signal from computer is output and video cable is connected normally
NG OK
Input the sync signal of computer, or change the cable
Replace U601
40
3. Panel Power Circuit
Measure Q203 base is high level?
OK NG
Measure U201 PIN2=2.5V U202 PIN2=3.3V
NG
Check Q203 and Q204 are broken or CN201 solder?
OK
Replace U201, U202
Check Correspondent component.
NG OK
X601 oscillate waveforms are normal
OK
NG
Replace X601
Replace PANEL Replace U601
41
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 OK Check main board Replace Keypad Board NG Replace Button Switch Connect Keypad Board
42
5. PWPC
No Power
No power
Check AC line volt 110V or 220V
OK NG
Check AC line
Check the voltage of C905(+)
OK NG
Check F901, bridge rectified circuit
Check start voltage for the pin3 of IC901
OK NG Check R906, R907,IC901
Check the auxiliary voltage is between 10V-16V OK NG Check IC901,T901 Check ZD901, D903 Check D910, D911, IC902
43
No Backlight Check C201 (+) =12V OK NG Change F902 Check D201/Q209/Q210/ D202/Q211/Q212
Check ON/OFF signal NG OK Check U201 pin9=12V ? NG
OK
Check Interface board
Change Q201 or Q202
Check the pin1 of U201 have saw tooth wave NG OK Change U201
Check D201(-), D202(-) have the output of square wave at short time. NG OK
CheckQ205/Q207/Q203/Q201or /Q206/Q208/Q204/D202
Check the resonant wave of pin2 & pin5 for PT201/ PT202 OK NG Check Q209/Q210/C213 or Q211/Q212/C214
Check the output of PT201/PT202 NG OK Check connecter & lamp Change PT201/PT202
44
6.No Audio
Mute and volume setting is ok? NG OK Check power supply of U201 is 12?
Reset mute and volume
NG Check connecting is ok? OK NG Check input signal of U201is ok? Reconnect
NG OK
Check correspondent component
Replace U201
NG Replace speaker
45
Chapter 5
Connector Information
The following figure shows the connector locations on the monitor board:
1 6 11
5 10 15
15 Pin Color Display Signal Cable (D-sub)
PIN NO. 1. 2. 3. 4. 5. 6. 7. 8.
DESCRIPTION Red Green Blue RS232 DDC-Return R-Ground G-Ground B-Ground
PI N NO. 9. 10. 11. 12. 13. 14. 15.
DESCRIPTION +5V Logic Ground RS232 DDC-Serial Data H-Sync V-Sync DDC-Serial Clock
46
Chapter 6
FRU (Field Replaceable Unit) List
This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of AL1914.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.
47
Exploded Diagram (Model: AL1914)
48
Part List
Above picture show the description of the following component. Item Picture Description Part No.
1
BACK COVER
34L1381 FV 1B
2
Stand
34L1212 FV B
3
BEZEL
34L1380BGE 1B
4
BASE
34L1382 FV B
5
SCREW
M1L1730 8128
6
SCREW
Q1L1040 12128
49
Chapter 7
Schematic Diagram Analog and Digital Input
11 12 13 14 15 D323 TZMC5V6-GS08 TZMC5V6-GS08 D322 CN301 DB15 1 6 2 7 3 8 4 9 5 10 RXD TXD 6 6 FB301 FB302 FB303 PC5V VGA_CON 0£[ 1/16W 0£[ 1/16W 0£[ 1/16W R326 75£[ 1/16W R327 75£[ 1/16W R325 75£[ 1/16W C301 NC C302 NC C303 NC R305 R306 R307 3 3 D301 BAV99 D302 BAV99 3 D303 BAV99 VCC5V VCC5V R308 10K£[ 1/16W R309 HSI VSI FB304 R312 150 OHM 100£[ 1/16W R310 R311 100£[ 1/16W 1K£[ 1/16W 1K£[ 1/16W VCC5V 3 PC5V 2 D304 BAV70 1 R317 10K£[ 1/16W CLK_DDC DAT_DDC CN302 R G B RGB GND HSYNC VSYNC SYNC GND DDC SCL DDC SDA +5V HPD 1/3shield 2/4shield 0/5shield clk shield DAT0+ DAT0DAT1+ DAT1DAT2+ DAT2DAT3+ DAT3DAT4+ DAT4DAT5+ DAT5clk+ clkJACK 25 26 27 29 28 8 15 6 7 14 16 11 3 19 22 18 17 10 9 2 1 13 12 5 4 21 20 23 24 3 3 3 3 3 3 3 D306 BAV99 D307 BAV99 D308 BAV99 D309 BAV99 D310 BAV99 D311 BAV99 D312 BAV99 3 D313 BAV99 D321 TZMC5V6-GS08 D318 TZMC5V6-GS08 6 6 DDC_DAT DDC_CLK VCC5V 3 DVI5V 2 D305 CLK_DDC2 DAT_DDC2 R319 R320 100£[ 1/16W 100£[ 1/16W DVI5V BAV70 R321 10K£[ 1/16W R315 R316 100£[ 1/16W 100£[ 1/16W R318 10K£[ 1/16W 100£[ 1/16W 100£[ 1/16W 100£[ 1/16W C308 0.047uF C309 0.047uF C310 0.047uF GNDR GNDG GNDB 4 4 4 R301 R302 R303 R304 100£[ 1/16W 100£[ 1/16W 100£[ 1/16W 470£[ 1/16W C304 0.047uF C305 0.047uF C306 0.047uF C307 0.001uF RIN GIN BIN SOG 4 4 4 4
2
1
2
1
2
1
ST_DET1 6 HSYNC VSYNC 4 4
D319 TZMC5V6-GS08
D320 TZMC5V6-GS08
R313 2.2K£[ 1/16W
C311 33pF
R314 10K£[ 1/16W
C312 220pF
D317 TZMC5V6-GS08
U301 8 7 6 5 VCC WP SCL SDA A0 A1 A2 GND 1 2 3 4
C313 0.1uF
M24C02WMN6
R322
100£[ 1/16W
D314 LL5232B 5.6V 5%
D315 LL5232B 5.6V 5%
D316 LL5232B 5.6V 5%
C314 0.1uF B+ BG+ GR+ R4 4 4 4 4 4
R323 10K£[ 1/16W
R324 10K£[ 1/16W
1
ST_DET2 6
U302 8 7 6 5 VCC WP SCL SDA A0 A1 A2 GND 1 2 3 4
C315 0.1uF
M24C02WMN6
CLK+ CLK-
4 4
VCC5V 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1
Title
MST8031/ MST8131 for AOC
Size B Date: Document Number Rev
INPUT
Tuesday, November 09, 2004 Sheet 3 of 6
D
50
TSU16AK
VCC3.3 2 VCC3.3 FB401 VPO 2 + C406 C407 C408 C409 C410 C411 C412 C413 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF VCC2.5 VCC2.5 FB402 VDD 600 OHM C405 10uF/16V VAD VPLL VDVI VDPLL VPO VDD 600 OHM C414 10uF/16V + C415 C416 C417 C418 0.1uF 0.1uF 0.1uF 0.1uF
11 21 84 94 104 114 126 VDDP VDDP VDDP VDDP VDDP VDDP VDDP
45 AVDD_DVI 51 AVDD_DVI
AVDD_MPLL
AVDD_PLL
U401
18 VDDC 87 VDDC 97 VDDC 117 VDDC
55 AVDD 65 AVDD
35
53
3 3 3 3 3 3 3 3 3
RIN GNDR GIN GNDG SOG BIN GNDB HSYNC VSYNC
63 62 60 59 61 58 57 37 38 29 28
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
102 103 106 107 108 109 110 111 112 113
PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PA8 PA9
PA[0..9]
VAA1 FB403 PA[0..9] 5 2 VAA1 600 OHM C419 10uF/16V
VAD
+ C420 C421 0.1uF 0.1uF
3 3 3 3 3 3 3 3 VDVI
R+ RG+ GB+ BCLK+ CLKR403 390£[ 1/16W
40 41 43 44 46 47 49 50 52
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
118 119 120 121 122 123 124 125 128 1
PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 PB8 PB9
PB[0..9]
PB[0..9]
5
VAA2 2 VAA2
FB404 600 OHM C422 10uF/16V
VPLL
MST8031/8131
+ C423 0.1uF
6 CSZ 6 SCL 6 SDA 6 HWRESET 6 INT
69 71 70 32 72
CSZ SCL SDA HWRESETZ INT
VCC5V 2 R407 R405 R404 R406 VAA3
VAA3
FB405 600 OHM C424 10uF/16V
VDVI
+ C425 C426 0.1uF 0.1uF
2 6
AdjBACKLITE Volume C402 22pF X401 14.318MHz C403 C404 22pF 0.1uF
73 74 33
PWM0 PWM1 XIN ADO/NC AD1/NC AD2/NC AD3/NC BUS TYPE/NC AVSS_MPLL
10K£[ 1/16W 10K£[ 1/16W 10K£[ 1/16W 10K£[ 1/16W VCC3.3 30 77 78 31 6 R401 NC 19 GNDC 86 GNDC 96 GNDC 116 GNDC GNDP GNDP GNDP GNDP GNDP GNDP GNDP
AD0 AD1 AD2 AD3
6 6 6 6
R402 100£[ 1/16W 2 VAA4
VAA4
FB406 600 OHM C427 10uF/16V
VDPLL
34 3 2
XOUT BYPASS AVSS_LPLL AVSS AVSS AVSS
+ C428 0.1uF
AVSS_PLL
AVSS_DVI AVSS_DVI AVSS_DVI
R401 Direct Bus 3-WIRE NC 4.7K
R402 4.7K NC Size B Date: Title
10 20 85 95 105 115 127
68 56 64
36
54
39 42 48
MST8031/ MST8131 for AOC
Document Number Rev
SCALER
Wednesday, April 14, 2004 Sheet 4 of 6
D
51
LVDS
4 PA[0..9] PA[0..9] PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PB[0..9] PA8 PA9 PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 PB8 PB9 LVA3P LVA3M LVACKP LVACKM LVA2P LVA2M LVA1P LVA1M LVA0P LVA0M LVB3P LVB3M LVBCKP LVBCKM LVB2P LVB2M LVB1P LVB1M LVB0P LVB0M
CN503 LVB0M LVB1M LVB2M LVBCKM LVB3M LVA0M LVA1M LVA2M LVACKM LVA3M RXO0RXO1RXO2RXOCRXO3RXE0RXE1RXE2RXECRXE31 3 5 7 9 11 13 15 17 19 21 23 2 4 6 8 10 12 14 16 18 20 22 24 RXO0+ RXO1+ RXO2+ RXOC+ RXO3+ RXE0+ RXE1+ RXE2+ RXEC+ RXE3+ LVB0P LVB1P LVB2P LVBCKP LVB3P LVA0P LVA1P LVA2P LVACKP LVA3P
4
PB[0..9]
CONN VLCD VLCD 2
R502 0£[ 1/16W
C509 + 47uF/16V
C510 0.1uF
C511 0.1uF
Title
MST8031 / MST8131 for AOC
Size A Date: Document Number Rev Sheet 5 of 6
PANEL INTERFACE
Wednesday, April 14, 2004
D
52
MCU/ Key Board Connector
VCPU 2 VCPU
R601 10K£[ 1/16W C602 22pF X601 C603 10uF/16V 20MHz C604 22pF
R602
C601
RN601
8 7 6 5 8 7 6 5 RN602 10K£[ 1/16W 1 2 3 4 1 2 3 4
0.1uF 10K£[ 1/16W U601 EA/VP XTAL1 XTAL2 RESET P4.3 INT0/P3.2 INT1/P3.3 ALE/P PSEN P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 W78E65P-40 44
10K£[ 1/16W
21 20 10 12 14 15 33 32 2 3 4 5 6 7 8 9
+ VCPU 3 U603 VCC MAX810STR RST 2 D601 R603
GND
VCC
35
P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7 P2.0 P2.1 P2.2 P2.3 P2.4 P2.5 P2.6 P2.7 T0/P3.4 T1/P3.5 P3.6/WR P3.7/RD P3.1/TXD P3.0/RXD
43 42 41 40 39 38 37 36 24 25 26 27 28 29 30 31 16 17 18 19 13 11
POWER ENTER RIGHT LEFT AUTO LED_B LED_O LED_G R636 0£[ 1/16W HWRESET 4 onPANEL_5V/3.3V 2 onBACKLITE 2 CSZ 4 SCL 4 SDA 4 VCPU AD0 AD1 AD2 AD3 DDC_DAT DDC_CLK TXD RXD 4 4 4 4 3 3 3 3
4 LL4148-GS08 10K£[ 1/16W VCPU C605 0.22uF 1 2 3 4 R604 10K£[ 1/16W R605 10K£[ 1/16W VCC WP SCL SDA 8 7 6 5 R638 R639 100£[ 1/16W
Reset Circuit
U602 A0 A1 A2 GND
1
INT
R608 R609
100£[ 1/16W 100£[ 1/16W
R606 R607
10K£[ 1/16W 10K£[ 1/16W
AT24C16N-10SC-2.7 VCC12V FB601 600 OHM VCC5V CN601 1 3 5 7 9 11 13 2 4 6 8 10 12 14 FB602 600 OHM
NC
R615 10K£[ 1/16W R614 10K£[ 1/16W
22
R610 R611 R634 R635
NC NC 100£[ 1/16W 100£[ 1/16W
VSS
VCPU VCC12V VCC5V 2 2,3,4 Standby Mute 3 3 ST_DET1 ST_DET2 VCPU R632 NC R631 NC R630 R633 NC NC DVI-DSUB SELECT Mute_key 1 2 3 4
CN603 1 2 3 4 NC R612R613 C618
R627 R626 OUT-R+ OUT-RC613 0.1uF C612 0.1uF
10K£[ 1/16W 10K£[ 1/16W VCC5V
0.1uF NC 10K£[ 1/16W
OUT-L+ OUT-L-
VCC5V R640 NC
CONN
R643 NC Q604 1 R641 NC Volume VCPU 4
C614 NC
C615 NC
3
NC
VCPU
VCPU
FB603
2
600 OHM C617 100pF
R625 10K£[ 1/16W C611
R642
0£[ 1/16W
R617 120£[ 1/16W 2 2
R628 0£[ 1/16W Q603 PMBS3906 LED_B 1 R629 4.7K£[ 1/16W
R618 120£[ 1/16W Q602 PMBS3906 1 2
1uF/25V LED_G
R616 4.7K£[ 1/16W
1
Q601 PMBS3906 3
CN602 DVI-DSUB SELECT LED_GRN 1 3 5 7 9 11 13 15 2 4 6 8 10 12 14 16 LED_BLUE LED_ORANGE R637 3
R619 4.7K£[ 1/16W
LED_O
470£[ 1/16W R621 470£[ 1/16W ENTER LEFT R623 470£[ 1/16W 3
AUTO R620 RIGHT R622 POWER R624
470£[ 1/16W 470£[ 1/16W 470£[ 1/16W C606 C608 C610 OUT-L+ OUT-L-
Mute_key OUT-R+ OUT-R-
C616 1uF/25V
0.001uF 0.001uF 0.001uF
C607 0.001uF
C609 0.001uF Title
CONN
MST8031 / MST8131 for AOC
Size B Date: Document Number Rev
MPU
Wednesday, July 21, 2004 Sheet 6 of 6
D
53
Power
VCC5V VCC5V+
D202 VCC12V VCC12V CN201 GND GND VCC12V GND VCC5V GND 1 3 5 7 9 11 2 4 6 8 10 12 ON_OFF DIM VCC12V GND VCC5V GND R201 4.7K£[ 1/16W C210 3 D201 SS14 VCC5V+ VCC5V VCC5V VCPU VCPU 6 C201 0.1uF 3,4,6 2 R212 4.7K£[ 1/16W 1 Q201 PMBS3904 0.1uF onBACKLITE 6 6 R202 10K£[ 1/16W GS1D 3
SOT-252
U201 RT9164 VI GND VO 2 C211 47uF/16V 1 C212 0.1uF VCC2.5 VCC2.5 + 4
CONN
FB201 600 OHM
C B E
VCC5V C202 + R203 1K£[ 1/16W 220uF/25V C203 0.1uF C204 + 220uF/25V C205 0.1uF
Brightness
R204 10K£[ 1/16W Q202 PMBS3904 C206 1uF/25V 3
VCC3.3
4
AdjBACKLITE
R205 4.7K£[ 1/16W 1
VCC5V+
VCC3.3
4
3
TO-263
U202 AIC1084-33M VIN ADJ VOUT 2 C215 47uF/16V C216 0.1uF VAA3 VAA3 VAA4 VAA4 4 4 VAA2 VAA2 4 1 C214 0.1uF VAA1 VAA1 + 4
C B E
2
NEW Circuit
VCC5V VCC5V VLCD VLCD 5 VCC5V R208 10K£[ 1/16W R216 R207 6 onPanel_5V/3.3V 4.7K£[ 1/16W C207 0.1uF 2 4.7K£[ 1/16W 1 3 R215 100K£[ 1/16W Q204 PMBS3904 C217 0.068uF + C208 100uF/16V R211 10K£[ 1/16W Size B Date: Title Q203 AO3401 R209 0£[ 1/16W R210 NC R213 NC VCC3.3 VCC12V R206 10K£[ 1/16W
R214 delete
MST8031/ MST8131 for AOC
Document Number Rev Sheet 2 of 6
POWER
Friday, November 26, 2004
D
54
Audio
OUT_LOUT_R
CN202 WAFER 2*7P 2.54mm MUTE 13 11 9 7 5 3 1 14 12 10 8 6 4 2
12V
+12V
VOLUME
+ C201 470uF/16V
+ C202 470uF/16V C203 0.1uF
STANDBY
GND CN204 1 2 3 33L8022-3A-H FEMALE R201 10K£[ R203 10K£[
16
15
8
U201 TDA7496L
GND C205 CN203 4 3 2 1 WAFER 4P2.0 R/A GND C214 100 pF C215 100 pF
VS
C204 0.47uF C206 0.47uF R212 220K£[
NC
VS
4 9 6 11 12
INL INR VOLUME STBY MUTE
OUTL OUTR SVR VAROUT_R VAROUT_L
17 14 10 7 5 R207 1K£[ 470uF/16V C207 470uF/16V R208 1K£[ GND + + GND
5.6K£[
5.6K£[
C211 100 pF
C212 100 pF + C209 + C210 1.0uF 1.0uF C213 0.1uF
GND GND GND GND GND GND GND
GND
R210
R211
C208 470uF/16V
GND
GND
55
1 2 3 13 18 19 20
GND
+
Power board (adapter + inverter)
R919 47_1/2W_M R920 47_1/2W_M C913 102P_500V
+12V
F902 5A/24V/1206
D910 MOSPEC20100 T901 PQ26/22.5 4 O BD901 GBU405 3 + C905 150uF/400V R907 1M/1206 3 L902 1 4 C908 0.1U_50V + C907 22UF/50V R905 1M/1206 D902 PS102R D901 FR107 6 3 R908 3R3/1206 R906 1M/1206 R904 1M/1206 C906 152P/1KV R903 100K_2W 8 O7
L903 73L-253-91L
V12A
+ 1
12 11 + D911 MOSPEC20100 C914 2200UF/16V +
1
2
FB902 + C916 470UF/16V C917 0.1UF/0805/Y5V BEAD C920 +
2
C915 2200UF/16V
V12B
4
2
80LL19T-3-T
C921 4700PF/250V
1000UF/16V
O 2
C904 0.47uF/275V 3 7 R909 10/1206 8 R910 0/0805 C909 N.C R913 20K/0805 C910 102P_50V R914 0.3_2W CONN ZD902 12V/SMD 4 1 IC902 PC123FY2 4P R915 4.7K/0805 F901 2.5A/250V C901 102PF/250V C902 102PF/250V D903 ZD901 RLZ20B R917 100/0805 Q903 Q902 2N3906 IC903 HTL431 C919 0.01U/50V/X7R C911 0.1uF/50V R916 4.7K/0805 1N4148/SMD C918 0.1U/50V/X7R R923 0/0805 3 2 R922 1K/0805 1 3 2 +12V Q901 2SK2996 FB901 BEAD R921 240/1206 C950 N.C 2 4 6 8 10 12 14 16 CN902 1 3 5 7 9 11 13 15 +5V 3.3V
Vin
2
3 L901 N.C_But jump 043,025 4 4 R911 24K/0805_1%
IC901 RI GATE SG6841 RT SENSE GND
1
VDD
5
6
ON/OFF BRIGHT STBY VOLUME PC_R_IN
FB
C903 0.1uF/275V
1
R901 1M/1206
R902 1M/1206
R912 20K/0805/N.C
2
A_L A_R PC_L_IN
connect pitch 2.5mm
NR901 61L58-050-WT
R924 1K/0805 R926 9.31K/0805_1% R925 1K/0805
FG
1 SW901 SW SPST
2N3904 C912 0.1U/0805/Y5V R918 4.7K/0805
R927 2.43K/0805_1%
J901 JUMPER1
2 CN901
3
1
2
56
J201 2 JUMPER1 1
TP1 HVO 1 V12A 1 2 3 + C201 4 220uF/25V SI4431DY-T1 Q203 8 7 6 5 L201 120UH C215 22pF/3KV C216 22pF/3KV
TP3 HVL 1
TP4 HVL 1
TP7 HVL
CN201 1 2 CN202 1 2
C202 0.1uF/25V
3
AA 1
Q202 DTA144WKA
C225 1uF/25V
R214 2.2K£[ 1/16W
R212 3.9K£[
D201 SR24
D203 RLZ11B
R224 1K£[
R225 1K£[ 5 PT201 9 4 3 2 6 1 7 1 POWER X'FMR_80LL19T-1-YS Q210 KTD1691 3
1 R220 15K£[ 2 C213 0.22uF/160V 2
C227 N.C L203
2
ON/OFF R201 18K£[ BRIGHT C203 1uF/25V R205 47K£[ BU_L R202 10K£[
Q201 DTC144WKA
R243 1K£[
Q205 MPS3904 R216 220£[ 1/16W C211 1uF/25V
1 R232 1K£[
4 1 2 CN203-N.C
R218 100£[ R208 4.7K£[ 1/16W R210 18K£[
1
Q207 MPS3906 2
R222 12K£[
1 Q209 KTD1691 3
3
2
3 CHOKE L205-1&2-SHORT 4
D209 1N4148
D205 1N4148
1
2 C209 1uF/25V R240 51K£[ D207 1N4148 R234 910£[ 1/4W
3 CHOKE
C205 0.1uF
C228
C221 0.47uF/63V
R238 12K£[
C219 1uF/25V
R236 910£[
0.001uF/25V C207 22uF R207 OPEN TP2 HVO TP5 HVL TP6 HVL TP8 HVL
16
15
14
13
12
11
10
9
+
C204 0.1uF
SCP
2IN+
2IN-
2FBK
REF
2OUT
2DTC
Vcc
1 C217 22pF/3KV
1
1
C206 0.1uF R206 47K£[
U201 TL1451ACNSR C224 1uF/25V R213 3.9K£[
220uF/25V 1 2 + C223 3 4 SI4431DY-T1
1OUT
1DTC
1FBK
GND
1IN+
1IN-
8 7 6 5
1
Q204
L202 120UH
CN204 1 2
CT
RT
C228 0.001uF/25V C210 1uF/25V R204 10K£[ R209 4.7K£[ 1/16W
R215 2.2K£[ 1/16W
D202 SR24
D204 RLZ11B
R226 1K£[
R227 1K£[ 5 PT202 9 4 3 2 6 1 7 1 POWER X'FMR_80LL19T-1-YS Q212 KTD1691 3
C218 22pF/3KV 1 2
1
2
3
4
5
6
7
8
CN205
2
C208 330pF R203 10K£[
R244 1K£[
Q206 MPS3904
R217 220£[ 1/16W
C212 1uF/25V
R221 15K£[
C214 0.22uF/160V 2
C226 N.C
R219 100£[
3
1
Q208 MPS3906
R223 12K£[
1 Q211 KTD1691 3
R233 1K£[
1
L204
4
CN206-N.C 1 2
R211 18K£[ R241 51K£[ D208 1N4148
D210 1N4148
D206 1N4148
2
3 CHOKE L206-1&2-SHORT 4
2
R235 910£[ 1/4W
1
2 C222 0.47uF/63V R239 12K£[ C220 1uF/25V R237 910£[
3 CHOKE
57
12V
+5V
Q101 R114 1K£[ 1/16W 1 3 Q102 PMBS3904 2 R116 3.6K£[ 1/16W 1 2 3 4 AO4411 + Q103 C103 PMBS3906 1000uF/16V 3 D101 SR54 8 7 6 5 L101 FB101 3 BEAD + C107 0.1uF/25V C108 470uF/16V R104 N.C 1 IC102 AIC1084-33CT VIN Vout ADJ
3.3V 2
45uH C106 470uF/16V
+
C101 470uF/16V
2
R113 390£[ 1/16W 1
R115 100£[ 1/16W
+
+ C109 470uF/16V R105 0£[ 1/16W C110 0.1uF / 0603
2 7 5 6 C102 0.1uF/25V R106 33K£[ 1/16W
Vo
1
IC101
Vcc RT SCP
FB
4 C113 NC C114 R109 3 1uF/50V 3K£[ 1/16W C115 0.1uF/25V
R112 2.7K£[ DIP
GND
DTC FP5001DR C112
COMP
0£[ 1/16W R107 R108 0.1uF/25V C111 47K£[ 1/16W
FP5001
R111 15K£[ DIP R110 3.6K£[ 1/16W
0.1uF/25V
8
58