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Sony S75F Service Manual

Tft lcd color computer display
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S75F Sony
Service
Manual
TFT LCD COLOR COMPUTER DISPLAY
SONY
1
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Summary of Contents for Sony S75F

  • Page 1: Service Manual

    S75F Sony Service Manual TFT LCD COLOR COMPUTER DISPLAY SONY...

  • Page 2: Table Of Contents

    S75F Sony Table of contents Table of contents -------------------------------------------------------------------------- 02 1. Precaution ------------------------------------------------------------------------------------------ 03 2 . S p e c i f i c a t i o n - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 0 5 2.1 Product character-----------------------------------------------------------05...

  • Page 3: Precaution

    S75F Sony 1. Precaution Warning on power connections Installation...
  • Page 4 S75F Sony Handing the LCD screen Maintenance Transportation...

  • Page 5: S P E C I F I C A T I O

    S75F Sony 2. Specification 2.1 Product character Driving system TFT LCD Size 17.0" Type M170E5-L09 Ver.C1 Pixel pitch 0.264mm(H) x 0.264mm(V) Viewing angle 170(H) 170(V) Luminance 300 cd/m (typ) LCD Panel Contrast Ratio 500:1 (typ) Response time 16ms (typ) Display colors 16.2 million Colors...

  • Page 6: Interface Description

    S75F Sony 2.2 Interface description 1. HD 15 Signal Input Pin Assignments Description Description Red Video Green Video(Sync on Green) Sync Return Blue Video ID (GND) ID(GND) DDC Data Sense of connection PC Horizontal Sync Red Video Return Vertical Sync...

  • Page 7: Factory Preset Mode

    S75F Sony 2.3 Factory preset mode Clock (MHZ) Resolution Frequency (KHz) Vertical (Hz) 28.322 720 × 400 31.469 70.087 25.175 640 × 480 31.469 59.940 30.240 640 × 480 35.000 66.667 31.500 640 × 480 37.500 75.000 31.505 720 × 480 35.200...

  • Page 8: Osd Operation

    S75F Sony 3. OSD operation 3.1 Generalization 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.

  • Page 9: Common Adjustment

    S75F Sony Key control: 3.3 Common adjustment Icon Description Backlight Adjust the brightness of the backlight Contrast Adjust the picture contrast Brightness Adjust the picture brightness (black level) Screen Adjust the picture’s sharpness or its centering Color Adjust the color temperature of the picture γ...
  • Page 10 S75F Sony Adjustment steps of each menu...
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  • Page 20: Adjustment

    30 minutes for RGB reset before W/B adjustment. 2. Setup 1) Prepare timing and pattern data for a signal generator according to the Sony timing specifications. 2) Connect a monitor video cable to the signal generator.

  • Page 21: Service Osd

    S75F Sony 5. Adjustment for White Balance a. Display SMPTE at SXGA/60Hz(Input level 0.73V). b. Set up [SERVICE MODE]. c. Click "CLEAR EEPROM" and AC Power off. d. Set up [SERVICE MODE] of the monitor again. e. Click "WHITE BALANCE" and then select "AUTO".

  • Page 22: Disassembly Flow Chart

    S75F Sony I). LIGHT SENSOR : When ECO Auto mode,the BACKLIGHT is changed as Light sensor input X :Light Sensor input, Y : Backlight Value setting, j). VCTi DEBUG : VCTi can be setted on DEBUG on/off, When you want to controll anything.
  • Page 23 S75F Sony Step2 Figure Description Discharge the base 1, Wring the five screws in the bracket marked in red. 2, Take the screw and stand away 3. Steel line marked in green is to rise or lower the stand. Wring the screw...
  • Page 24 S75F Sony 1, insert a hard plastic chip in the gap between bezel and rear cover at up-left corner 2, Hold the monitor with a hand and press the hard plastic chip with the other, then move it in the forward hour hand.
  • Page 25 S75F Sony 1,Wring down the four screws marked Discharge the in red. 2, Pull out the lamp and main board power board connection lines marked in yellow 1, Wring the four screws marked with red. Discharge the 2, Pull out the other connection lines...

  • Page 26: Wiring Diagram

    S75F Sony The panel is disassembled absolutely. 4.2 WIRING DIAGRAM...

  • Page 27: Monitor Exploded View

    S75F Sony 4.3 Monitor Exploded View...

  • Page 28: Circuit Principle Analysis

    S75F Sony 5. Circuit principle analysis The LCD Monitor contains a main board, an inverter/power board, keyboard which house the flat panel control logic, brightness control logic and DDC. Backlight and Panel PWPC board Main board Key board Video signal and DDC HOST computer 5.1 Main board...

  • Page 29: Introduction Of Ic

    S75F Sony 5.1.2 Introduction of IC GM5321: integrate ADC, OSD, SCALER, MCU, LVDS, convert analog RGB into digital and zoom and shrink scaling output to LCD panel. AIC1084-33M: DC power convert, used to 5v convert 3.3v. AIC1084-18CE: DC power convert, used to 5v convert 1.8v.
  • Page 30 S75F Sony Panel Control Circuit: The high level output from PIN67 of U201 makes Q402 break through, Q203 break through and offer 5V to panel when work well. The output is low level when it’s saving energy state and Q402 break off, Q203 break off, so the panel doesn’t work.

  • Page 31: Pwpc Board

    S75F Sony Interface of main board and PWPC board 5.2 PWPC board 5.2.1 Block diagram PWPC board combines to adapter and inverter, this design has the merits in predigesting constructions, reducing cost and improving product’s capability. Adapter which commonly consists of bridge rectifier and filter, start circuit, PWM control circuit (TOP247Y), protection circuits and convert to 12V, 5V DC voltage by input 90V-240V AC voltage that provide power supply for each chips in the main board and inverter.

  • Page 32: Introduction Of Ic

    S75F Sony 5.2.2 Introduction of IC TOP247Y: It cost effectively integrating the high voltage power MOSFET, PWM control, fault protection and other control circuitry onto a single CMOS chip. The function of each pin and the inside circuit diagram are as...

  • Page 33: Introduction Of Important Function

    S75F Sony BA9741F: PWM control, voltage range for working: 3.6~35V, Has such functions as short-voltage protection, Over-voltage protection, over-current protection and etc. The function of each pin and the circuit diagram inside are as follows: NAME FUNCTION NAME FUNCTION External timing capacitor...
  • Page 34 S75F Sony Rectifier and filter circuit: The AC input is changed to a high DC voltage, that magnitude is the product of 1.414 to AC after it is commuted by bridge rectifier (BD901) and filtered by the capacitance (C905). Start-up circuit: After being commuted and filtered, the high DC voltage falls down through R (R904, R908, and R911 series), the start-up carries out when the lowered voltage is supplied to L Pin of IC901 (TOP247Y).
  • Page 35 S75F Sony increase through IC902, and voltage increase of C Pin of IC901, and then it cuts off the pulse output. C Pin of IC901 2. ZD901, ZD902 can be broken down when12V and 5V DC voltage increase, which lead to SCR901 breaks through, then 12 connected to ground and realizes over-voltage protection.
  • Page 36 S75F Sony positive and down negative, so the secondary coil produces a reverse electromotive force. It is the stage of storing energy in the coil because D902, D904 are closed. But while being given a high level, The primary coil produces a EMF with its down terminal positive and up negative, and the secondary coil appears a reverse EMF at the same time, then D902, D904 get through accompanied with a voltage output of 12V and 5V through C904, C909 which are used to filter.
  • Page 37 S75F Sony PIN9 of U201 Protection circuit: 1. Over-voltage protection: D203 or D204 is broken down when the output of L201 or L202 exceeds 11V, which increases the voltage applied across R222 or R223.It results in rising the DTC value of U201.When the value falls downs to be lower than surge voltage, the output is shut.
  • Page 38 S75F Sony From U201 PIN10 TO U201 PIN11 OSC and output circuit: OSC is made up of C213 and PT201 and PUSH-PULL circuit is made up of Q209, Q210. They are in alternate working state. R224, R225, R226, R227 are used for starting up OSC. The voltage of Q209 and Q210 adds in PT201, and then it produces high voltage sine wave through LC OSC.
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  • Page 40: Trouble Shooting

    S75F Sony 6. Trouble shooting 6.1 Main board No power 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 Measure U602 PIN2=3.3V C609(+)=1.8V...
  • Page 41 S75F Sony No picture (LED orange) No picture Measure U602 PIN2=3.3V C609(+)=1.8 Check Correspondent component X301 oscillate waveform is normal Check Correspondent component. Replace U301...
  • Page 42 S75F Sony White screen White screen Measure Q502 base is high level? Measure U602 PIN2=3.3V C609 (+) =1.8V Check Q502 and Q501 are Check Correspondent broken or CN501 solder? component X301 oscillate waveform is normal Check Correspondent component Check Correspondent...

  • Page 43: Pwpc Board

    S75F Sony 6.2 PWPC board No Power Check to CN902 Pin5=12.0V and pin9 = 5.0V Check Interface board Check AC line voltage 110V or 240V Change F901 , check BD901,Q903,IC901 Check the voltage of Check bridge rectified circuit Check start voltage for the pin3 of IC901...
  • Page 44 S75F Sony No Backlight Check VDDA,ENA VDDA=4.75~5.25V;ENA>3V Check On/Off loop Circuit Preset at 2V to SST(pin4) of IC801 and Connect CTIMR(Pin1) to GND Check REF (pin7), RT (pin17), CT(pin18),NDRV_D(pin11), PDRV C(pin12),PDRV A(pin19),NDRV B(pin20) of IC801 Check full bridge power conversion...

  • Page 45: Bom

    S75F Sony 7. BOM 7.1 T782KMDDKNSFAP Symbol Part NO. for TPV Description AUPC782S1P AUDIO BOARD CBPC782KMC1SP CONVERSION BOARD PWPC1742CMS1P POWER BOARD 11G6048 1 CLAMP-S 11G6051 1 TWIST LOCK 11G6054 1 LOCK WASHER 11G6084 1 CLAMP 15G8178 1 MAINFRAME-CMO 19G6034 1...
  • Page 46 S75F Sony M1G 130 4120 GP CPT PANEL/MAINFRAME M1G 130 5120 GP SCREW M1G 240 12225 GP SCREW M1G 330 4 47 GP SCREW M1G 330 4120 GP SCREW M1G1140 6120 GP SCREW M1G1730 6120 GP M3*6 SCREW Q1G 330 20 47 GP...
  • Page 47 S75F Sony C608 67G215Y2207NV GP KY50VB22M-CC3 C609 67G215V221 4N GP KY25VB220-M-CC3 C702 67G215L470 4N GP KY25VB47M-L 5*11 C705 67G215L470 4N GP KY25VB47M-L 5*11 C718 67G215L470 4N GP KY25VB47M-L 5*11 C719 67G215L470 4N GP KY25VB47M-L 5*11 C720 67G215L470 4N GP KY25VB47M-L 5*11...
  • Page 48 S75F Sony C220 65G0603103 32 GP CHIP 0.01UF 50V X7R C221 65G0603104 12 GP CHIP 0.1UF 16V X7R C222 65G0603104 12 GP CHIP 0.1UF 16V X7R C225 65G0603102 32 GP 1000PF +-10% 50V X7R C302 65G0603104 12 GP CHIP 0.1UF 16V X7R...
  • Page 49 S75F Sony C502 65G0603103 32 GP CHIP 0.01UF 50V X7R C503 65G0603683 32 GP CHIP 0.068UF 50V X7R C504 65G0603104 12 GP CHIP 0.1UF 16V X7R C505 65G0603104 12 GP CHIP 0.1UF 16V X7R C602 65G0603104 12 GP CHIP 0.1UF 16V X7R...
  • Page 50 S75F Sony D704 93G 64 33 DIO SIG SM BAV99 (PHSE) D705 93G 64 33 DIO SIG SM BAV99 (PHSE) D706 93G 64 33 DIO SIG SM BAV99 (PHSE) FB201 71G 59C800 CHIP BEAD FB202 71G 59C800 CHIP BEAD FB203...
  • Page 51 S75F Sony R217 61L0603103 CHIPR 10K OHM +-5% 1/10 R218 61L0603223 CHIP 22KOHM 1/16W R219 61L0603333 CHIP 33KOHM 1/16W R220 61L0603330 1F GP CHIPR 3.3K OHM +-1% 1/1 R221 61L0603100 2F GP CHIPR 10K OHM +-1% 1/10 R222 61L0603101 CHIPR 100 OHM +-5% 1/10...
  • Page 52 S75F Sony R329 61L0603102 CHIPR 1K OHM +-5% 1/10W R331 61L0603103 CHIPR 10K OHM +-5% 1/10 R334 61L0603000 CHIPR 0OHM +-5% 1/10W R339 61L0603101 CHIPR 100 OHM +-5% 1/10 R340 61L0603101 CHIPR 100 OHM +-5% 1/10 R341 61L0603101 CHIPR 100 OHM +-5% 1/10...
  • Page 53 S75F Sony R710 61L0603224 CHIP 220K OHM 1/16W R711 61L0603224 CHIP 220K OHM 1/16W R712 61L0603224 CHIP 220K OHM 1/16W R713 61L0603224 CHIP 220K OHM 1/16W R714 61L0603224 CHIP 220K OHM 1/16W R716 71G 59B121 CHIP BEAD 1200HM R717 71G 59B121...
  • Page 54 S75F Sony ZD406 93G 39S 34 T UDZS5.6B ZD407 93G 39S 34 T UDZS5.6B ZD408 93G 39S 34 T UDZS5.6B ZD409 93G 39S 34 T UDZS5.6B ZD501 93G 39S 34 T UDZS5.6B ZD601 93G 39S 34 T UDZS5.6B PWPC1742CMS1P Symbol Part NO.
  • Page 55 S75F Sony L901 73L 174 53 LG GP CHOKE L902 73L 174 55 LG GP LINE FILTER BY LITAI L903 73G 253 91 LS GP CHOKE BY LI SHIN L904 73G 253 91 LS GP CHOKE BY LI SHIN PT801...
  • Page 56 S75F Sony C823 65G0805104 22 GP 0.1UF +-10% 25V X7R 080 C824 65G1206104 32 GP CHIP 0.1UF 25V X7R 1206 C828 65G1206104 32 GP CHIP 0.1UF 25V X7R 1206 C829 65G0805473 22 GP 0.047UF 25V X7R 0805 C831 65G0805152 32 GP...
  • Page 57 S75F Sony JR804 61L1206000 CHIPR 0 OHM +-5% 1/4W JR805 61L1206000 CHIPR 0 OHM +-5% 1/4W JR806 61L1206000 CHIPR 0 OHM +-5% 1/4W JR807 61L1206000 CHIPR 0 OHM +-5% 1/4W JR901 61L1206000 CHIPR 0 OHM +-5% 1/4W JR902 61L1206000 CHIPR 0 OHM +-5% 1/4W...
  • Page 58 S75F Sony R829 61L1206100 CHIPR 10 OHM+-5% 1/4W R830 61L0805753 CHIP 75K OHM 0805 R832 61L1206103 CHIP 10KOHM 5% 1/4W R833 61L0805204 CHIP 200KOHM 0805 R835 61L0805105 CHIP IMOHM 0805 R836 61L0805204 CHIP 200KOHM 0805 R837 61L0805102 CHIPR 1K OHM +-5% 1/8W...
  • Page 59 S75F Sony R931 61L1206434 430K 1206 1/4W 5% R932 61L1206684 CHIPR 680K OHM+-5% 1/4W R933 61L0805103 CHIPR 10K OHM +-5% 1/8W R934 61L1206101 CHIP 100 OHM 5% 1/4W R935 61L1206101 CHIP 100 OHM 5% 1/4W R936 61L1206101 CHIP 100 OHM 5% 1/4W...
  • Page 60 S75F Sony 52G6025 12113 GP MYLAR CN901 87G 501 27 RF GP AC SOCKET 90G6241 1 HEAT SINK AM1G1730 8128 GP SCREW M3*8 D904 93G 60248 SP20100 90G6241 2 HEAT SINK AM1G1730 8128 GP SCREW M3*8 D902 93G 60245 SP10150...
  • Page 61 S75F Sony 95G8014 10 23 GP K/B WIRE HARNESS Q1G 140 8120 GP T4*8 SCREW Q1G 330 6120 GP SCREW Q1G 340 10120 GP T4*10 SCREW Q1G1030 6120 GP SCREW Q1G1030 8120 GP SCREW 3X8 NI SM1G 135 6125 GP...

  • Page 62: Schematic

    S75F Sony 8. Schematic...
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