Acer AL1602W Service Manual Download Page 13 | Manualshive

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Monitor Block Diagram

The LCD MONITOR will contain a main board, a power board, and keypad board which house the flat panel control
logic, brightness control logic and DDC.
The Inverter board will drive the backlight of panel and the DC-DC conversion,
The Adapter will provide the 12V DC-power to inverter/power board.

Video signal, DDC

Power Board

Flat Panel and
CCFL backlight

Main Board

Keyboard

HOST Computer

CCFL Drive.

AC-IN
100V-240

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Summary of Contents for AL1602W

Page 1: ...1 Acer AL1602W Service Guide ...

Page 2: ...2 Service Guide Version and Revision Version Release Date Revision History TPV model A00 Apr 2 2008 Initial Release T68MMRD8Q2ABAN T68MMRD8Q1ABNN ...

Page 3: ...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 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 t...

Page 4: ...erference 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 recep...

Page 5: ...ose of the grounded plug z 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 z Do not overload power strips and extension cords Overloading can result in fire or electric shock z Never push any object into the slot on the monitor cabinet It could short circuit parts causing a fire or electric ...

Page 6: ...m 14 Software Flow chart 15 Main Board Layout 17 Adjusting the viewing angle 18 Rear Bezel 19 Chapter 2 Operating Instructions 20 External Controls 20 Front Panel Controls 21 Adjusting the picture 22 OSD Message 24 LOGO 25 Chapter 3 Machine Disassembly 26 Chapter 4 Troubleshooting 28 Chapter 5 Connector Information 34 Chapter 6 FRU Field Replacement Unit List 35 Exploded Diagram 35 Chapter 7 Schem...

Page 7: ... 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 AL1602W Panel M156B1 L01 NB CMO Signal Interface D Sub 1...

Page 8: ...user mode which allows that the brightest two of 32 linear distributed gray scales 0 700mv can be distinguished Picture position and size Factory preset value Viewing angle 110 H and 85 V CR 5 90 H and 65 CR 10 AC Supply voltage 220V 5 50 3Hz Ambient temperature 20 5 Display mode 1360x768 60Hz full white pattern Measurement systems The units of measure stated in this document are listed below 1 ga...

Page 9: ...ss 250cd m2 Typical Separate Sync H V TTL H Frequency 30kHz 60kHz Input V Frequency 55 75Hz Display mode 1366 768 75Hz Input Video Signal Analog 0 7Vp p standard 75 OHM Positive Input Connector D Sub 15pin ON Mode 28W EPA ENERGY STAR OFF Mode 1W Power Source 100 V 240 V 50 3Hz 60 3Hz Environmental Considerations Operating Temp 0 to 50 C Storage Temp 20 to 60 C Operating Humidity 10 to 80 Dimension...

Page 10: ...01 is a 15 6 TFT Liquid Crystal Display module with 2 CCFL Backlight unit and 30pin 1ch LVDS interface This module supports 1366 x 768 WXGA mode and can display up to 16 7M colors The inverter module for Backlight is not built in Optical Characteristics ...

Page 11: ...e is operated at conditions exceeding the maximum values Note 2 Specified values are for lamp Refer to 3 2 for further information Note 3 The frequency range can guarantee the optical and electrical characteristics Note 4 The frequency range will not effect the Lifetime and reliability characteristics ...

Page 12: ...12 Supported Timing ...

Page 13: ...at panel control logic brightness control logic and DDC The Inverter board will drive the backlight of panel and the DC DC conversion The Adapter will provide the 12V DC power to inverter power board Video signal DDC Power Board Flat Panel and CCFL backlight Main Board Keyboard HOST Computer CCFL Drive AC IN 100V 240 ...

Page 14: ...14 Main Board Diagram Scalar IC TSUM1PFR LF Include MCU ADC OSD U401 D Sub Connector CN101 H sync V sync RGB LCD Interface CN403 Key Board Control CN401 Crystal X401 14 31818MHZ ...

Page 15: ...15 Software Flow Chart N Y 1 2 N Y 5 Y N 10 Y N 12 Y N 7 Y N 6 4 3 8 9 14 11 13 Y N 15 Y N 16 17 19 Y N 18 ...

Page 16: ... set it to green color Scalar initializes 10 In standby mode 11 Update the lifetime of back light 12 Check the analog port are there any signals coming 13 Does the scalar send out an interrupt request 14 Wake up the scalar 15 Are there any signals coming from analog port 16 Display No connection Check Signal Cable message And go into standby mode after the message disappears 17 Program the scalar ...

Page 17: ...iption U401 IC TSUM1PFR LF CN401 WAFER 6PIN U404 IC AP1117D33LA TO252 3L ATC CN404 WAFER 9P RIGHT ANELE PITCH U103 IC AZC099 04S SOT23 6L CN403 CONNECTOR U102 IC AZC099 04S SOT23 6L X401 14 31818MHZ 32PF 49US U402 SST25LF020A 33 4C SAE CN101 D SUB 15PIN ...

Page 18: ...18 Adjusting the viewing angle ...

Page 19: ...19 Rear Bezel Item Description Item Description 1 Power Cable 2 Signal Cable 3 Audio cable Option only for Audio model ...

Page 20: ...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 Chapter 2 ...

Page 21: ...21 Front Panel Control ...

Page 22: ...indow 2 Press or to select the desired function 3 Press the MENU button to select the function that you want to adjust 4 Press or to change the settings of the current function 5 To exit and save select the exit function If you want to adjust any other function repeat steps 2 4 Analog Only Model ...

Page 23: ...23 b The Description For Function Control LEDS ...

Page 24: ...le is properly connected If the connector is loose tighten the connector s screws 2 Check the signal cable connection pins for damage INPUT NOT SUPPORT Your computer has been set to unsuitable display mode set the computer to display mode given in the above table ...

Page 25: ...here is no video input signal present When there is no video input signals 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 com...

Page 26: ...p by step procedures on how to disassemble the monitor for maintenance Disassembly Procedure 1 Remove the screws remarked in red to release the STAND BASE ASS Y Fig 1 Fig 1 2 Remove the back cover first and then remove the bezel Fig 2 Fig 2 Chapter 3 ...

Page 27: ...ked in red and release the connectors remarked in blue to remove the main frame You should pay attention to the LVDS cable Fig 3 4 Fig 3 Fig 4 4 Remove the screws marked in red to remove the main board and power board Fig 5 Fig 6 ...

Page 28: ...er 4 No power Press power key and look if the picture is normal Please reinsert and make sure the AC of 100 240 is normal Reinsert or check the power section Check if X401 oscillate waveforms are normal Measure U404 Pin2 3 3V OK OK NG NG NG Measure CN404 Replace U401 Replace X401 NG Replace U404 OK OK ...

Page 29: ... Replace U401 Replace X401 Measure U404 Pin2 3 3V Check Correspondent component Replace U401 X401 oscillate waveform is normal Replace U404 OK OK OK OK OK NG NG NG NG Check reset circuit of U401 is normal Check HS VS from CN101 is normal Replace X401 Check Correspondent component NG NG OK ...

Page 30: ...ase is low level X401 oscillate waveform is normal Check CN403 is solder and Q404 Q405 is OK Check Correspondent component Replace PANEL Check Correspondent component Replace U401 OK OK OK Replace X401 OK NG NG NG NG Check reset circuit of U401 is normal ...

Page 31: ...d OK OK OSD is unstable or not working Is Keypad board connecting normally Is Button Switch normally Is Keypad board normally Check main board Connect Keypad Board Replace Button Switch Replace Keypad Board OK NG NG NG ...

Page 32: ...d circuit and F901 circuit Check start voltage for the pin3 of IC901 Check R904 R932 R933 Change IC901 NG Check the auxiliary voltage is bigger than 10V and smaller than 20V 1 Check IC901 2 Check R909 D901 C908 circuit OK NG Check Q901 D903 IC902 ZD921 ZD922 Q903 OK Check IC901 pin8 PWM wave OK Check IC901 NG NG NG OK NG OK ...

Page 33: ...oard or main board NG OK Check IC801 PIN12 12V NG OK Change on off circuit Check IC801 PIN5 have triangle wave NG OK Change IC801 Check IC801 PIN9 PIN10 PWM wave NG OK Check IC801 Check Q802 Drain wave Check the output of T801 T802 Change Q802 Check connecter lamp feedback and protect circuit OK NG Change T801 NG OK ...

Page 34: ...34 Connector Information The following figure shows the connector locations on the monitor Chapter 5 ...

Page 35: ... 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 ...

Page 36: ...36 Part List Above picture show the description of the following component Item Picture Description 1 STAND BASE ASS Y 15 6 2 Main Frame 3 Key board 4 Panel ...

Page 37: ...37 5 Power Board 6 Main Board ...

Page 38: ...38 Schematic Diagram Main Board Chapter 7 ...

Page 39: ...39 ...

Page 40: ...40 ...

Page 41: ...41 ...

Page 42: ...42 Power board ...

Page 43: ...43 ...

Page 44: ...44 ...

Page 45: ...45 Key board ...

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