Acer X233H Service Manual Download Page 34 | Manualshive

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34

5. Power Board

1) No power

Check CN902 PIN3, 4 = 5V

Check AC line volt 110V or 220V

Check AC input

Check the voltage of C905 (+)

Check bridge rectified circuit and F901 circuit

Check start voltage for the pin3 of IC901

Check R904, R905 and Change IC901

NG

Check the auxiliary voltage is bigger than
11V and smaller than 25V

1) Check IC901
2) Check R909/D901/C908/C907circuit

OK

OK

NG

Check D906/D907/D908/IC903/Q903/ZD902

OK

Check IC901 pin8 PWM wave

OK

NG

NG

NG

OK

NG

Check IC901

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Summary of Contents for X233H

Page 1: ...1 Acer X233H Service Guide...

Page 2: ...2 Service Guide Version and Revision Version Release Date Revision History Customer model TPV model A00 Dec 02 2008 Initial Release X233H TDRSNDD8Y2ABPN...

Page 3: ...uyer 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 soft...

Page 4: ...rference 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 interfer...

Page 5: ...se 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...

Page 6: ...w chart 16 Main Board Layout 18 Installation 19 Chapter 2 Operating Instructions 21 External Controls 21 Front Panel Controls 21 eColor Management OSD 22 How to Adjust a Setting 23 How To Optimize The...

Page 7: ...duct 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...

Page 8: ...lue 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 90 H and V AC Supply voltage 230V...

Page 9: ...M Display mode 1920 x 1080 60Hz ON Mode 65W EPA ENERGY STAR OFF Mode 1W Contrast control Set to factory preset value which allows that the brightest two of 32 linear distributed gray scales 0 700mv ca...

Page 10: ...10 LCD Panel Specification of X233H General Specifications Block Diagram TFT LCD Module...

Page 11: ...11 Back light Unit Electrical Characteristics...

Page 12: ...12 Optical Specifications...

Page 13: ...60 000 P 60 000 P 108 000 VESA 1280x720 60Hz 1650 x 750 44 955 P 59 940 P 74 176 SXGA 1280x1024 60Hz 1688 x 1066 63 981 P 60 020 P 108 000 1280x800 60Hz 1680 x 831 49 702 P 59 810 N 83 500 WXGA 1360x...

Page 14: ...ouse the flat panel control logic brightness control logic and DDC The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each voltage Power Bo...

Page 15: ...emory SST25VF010A 33 4C SAE U402 Panel Interface CN301 Crystal 12MHz X401 Keypad Interface CN402 Scalar IC NT68667UFG C QFP 128L Include MCU ADC OSD U401 D Sub Connector CN101 H sync V sync RGB DVI Co...

Page 16: ...16 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 17: ...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...

Page 18: ...ER U703 IC AP1117D33L 13 TO252 3L DIODES CN701 WAFER 9P RIGHT ANELE PITCH U103 IC AZC099 04S SOT23 6L CN301 CONNECTOR U104 IC AZC099 04S SOT23 6L X401 CRYSTAL 12MHz HC 49US ARG6 120 U402 SST25VF010A 3...

Page 19: ...19 Installation...

Page 20: ...20...

Page 21: ...to indicate the power is turned ON 3 Empowering 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 to select sc...

Page 22: ...ment OSD Operation instructions Step 1 Press Key to open the Acer e Color Management OSD and access the scenario modes Step 2 Press or to select the mode Step 3 Press Auto Key to confirm the mode and...

Page 23: ...23 How to Adjust a Setting...

Page 24: ...24 Adjusting the picture...

Page 25: ...25...

Page 26: ...ll 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 red...

Page 27: ...isassembly is as follows Screwdriver hexagonal screwdriver Putty knife Disassembly Procedure 1 Remove the hinge assembly 2 Remove the rear cover and bezel The arrows in blue are the hook that we shoul...

Page 28: ...28 3 Remove the lamp connectors and remove the screws to remove the panel Put attention to the LVDS cable 4 Remove the screws to remove the main board and power board...

Page 29: ...29 5 The panel...

Page 30: ...ter 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 nor...

Page 31: ...Replace U401 Replace X401 Measure U703 Pin2 3 3V Check Correspondent component Replace U401 X401 oscillate waveform is normal Check U703 C706 and C707 OK OK OK OK OK NG NG NG NG Check reset circuit o...

Page 32: ...se is low level X401 oscillate waveform is normal Check CN301is solder and Q302 Q301 is OK Check Correspondent component Replace PANEL Check Correspondent component Replace U401 OK OK OK Replace X401...

Page 33: ...rd OSD is unstable or not working Is Key Pad Board connecting normally Connect Key Board Is Button Switch normally Replace Button Switch Y NG NG Is Key Pad Board normally Replace Key Board Y NG Y Chec...

Page 34: ...rectified circuit and F901 circuit Check start voltage for the pin3 of IC901 Check R904 R905 and Change IC901 NG Check the auxiliary voltage is bigger than 11V and smaller than 25V 1 Check IC901 2 Che...

Page 35: ...part Check ON OFF signal Check Interface board NG OK Check IC801 PIN12 14 5V NG OK Check ON OFF circuit Check IC801 PIN5 have triangle wave NG OK Change IC801 Check IC801 PIN9 PIN10 PWM wave NG OK Che...

Page 36: ...36 Connector Information Chapter 5...

Page 37: ...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...

Page 38: ...23WA 8ACER3 S4 A34G1085 RX 3B0100 1 11 HINGE COVER L A33G0271 RX 1L0200 1 12 HINGE COVER R A33G0271 RX 2L0200 1 13 SPK 8OHM 2W 40X20X18 350 320MM KUAIDA 078G 518501 K 1 14 USB BOARD USB7QK4 1 15 SCREW...

Page 39: ...art List Above picture show the description of the following component Picture Description Part No Main_frame_Sam A15G0563101102 Bezel A34G1084 RXA1B0130 Panel 750GLS230HT132N000 Power Board PWPC8E41M...

Page 40: ...40 Main Board CBPCRNDAEQ1 Key Board KEPC7QK1 Stand Front A34G0473 RX 1B0100 Base A34G0475 RX 1B0130 Stand Rear A34G0474 RX 1B0100...

Page 41: ...41 Hinge A37G0050 4 USB BOARD USB7QK4...

Page 42: ...onics Co Ltd Key Component 1 Acer B 2 5 Wednesday Nov ember 19 2008 2 0 Input G3108 1 X X 17 081119 U101 R104 1K 1 16W 5 C113 5pF 50V V_Sy nc DSUB_5V ZD105 RLZ5 6B 1 2 FB102 BEAD 5V_ESD 5V_ESD 5V_ESD...

Page 43: ...R305 0 OHM 5 1 8W PANEL_VCC Q302 2N3904S RTK PS R306 10K 1 16W 5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 CN301 CONN AO3401L 2 1 C304 NC C303 NC C306 0 1uF 16V...

Page 44: ...10K 1 16W 5 C706 100uF25V C701 NC C708 0 1uF 16V C702 NC 1 2 3 4 5 6 7 8 9 CN701 CONN R705 10K 1 16W 5 R704 4K7 1 16W 5 BKLT EN C707 100uF25V C709 0 1uF 16V R706 1K 1 16W 5 VSS 1 VOUT 2 VIN 3 U701 NC...

Page 45: ...1 PWM3 67 PA2 PWM4 66 PA0 PWM2 65 OSCO 128 OSCI 127 PB0 ADC0 126 PB1 ADC1 125 PC5 124 PC4 PWM1 123 PC3 PWM0 122 PC1 121 PC0 120 CVDD 119 PWMB GPO8 118 PWMA GPO7 117 NC 116 CVDD 115 INT_HSO GPO5 114 IN...

Page 46: ...et of TPV MODEL PCB NAME T P V Top Victory Electronics Co Ltd Key Component PWPC8E41MQHU H Custom 2 4 Wednesday Nov ember 05 2008 715G2824 H 5 ODM MODEL 03 POWER G2824 H 5 X 13 081105 R914 0 39 OHM 2W...

Page 47: ...2K1 10W R810 100K 1 10W 1 HV 1 LV 2 CN804 CONN R838 1M 1 10W 5 R842 10K 1 10W 5 3 1 2 D803 BAV99 LV1 LV4 LV2 LV3 LV1 LV3 LV2 LV4 D801 IN4148 C801 0 047uF C802 0 047uF R803 5K1 1 8W 5 R804 5K1 1 8W 5 O...

Page 48: ...Co Ltd Key Component PWPC8E41MQHU H Custom 4 4 Wednesday Nov ember 05 2008 715G2824 H 5 ODM MODEL 04 AUDIO G2824 H 5 X 13 081105 ROUT C612 0 1uF 16V R609 10K 1 10W 5 LOUT ROUT C604 100uF 25V R608 0R05...

Page 49: ...07 5 18 2007 5 18 2007 5 18 2007 5 18 CONNECTOR 1 2 4 3 5 SW005 SW C006 NC VOL C005 NC C002 NC C008 NC C003 NC ZD002 UDZS5 6B 2007 5 18 C001 NC C004 NC 1 1V 1 1V 0 65V LED POWER AUTO MENU VOL VOL C010...

Page 50: ...US4A OC4 Power USB Q712 RK7002 C774 100uF 16V R744 8K2 1 10W 1 C7102 18P 50V 1 2 FB724 120 OHM 1 2 3 4 5 CN710 CONN 1 2 3 4 5 CN711 NC CONN C776 100uF 16V C799 0 1uF16V 12V VBUS3 DP4 DM3 DP3 R750 NC 1...

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