Sony HS75 Service Manual
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Sony HS75 Service Manual

Sony HS75 Service Manual

Tft lcd color computer display
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HS75 Sony
Service
Manual
TFT LCD COLOR COMPUTER DISPLAY
SONY
1

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Summary of Contents for Sony HS75

  • Page 1: Service Manual

    HS75 Sony Service Manual TFT LCD COLOR COMPUTER DISPLAY SONY...

  • Page 2: Table Of Contents

    HS75 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

    HS75 Sony 1. Precaution Warning on power connections Installation...
  • Page 4 HS75 Sony Handing the LCD screen Maintenance Transportation...

  • Page 5: S P E C I F I C A T I O

    HS75 Sony 2. Specification 2.1 Product character Driving system TFT LCD Size 17.0" Type CLAA170EA Pixel pitch 0.264mm(H) x 0.264mm(V) Viewing angle 140(H) 130(V) (CR>10) 300 cd/㎡ (typ) Luminance LCD Panel Contrast Ratio 500:1 (typ) Response time 12ms (typ) Display colors 16.2 million Colors...

  • Page 6: Interface Description

    HS75 Sony 2.2 Interface description Analog connectors Description Description Red Video Green Video Detect Cable Blue Video Horizontal Sync Sensor for PC Red GND Vertical Sync Green GND Blue GND VGA Connector layout...

  • Page 7: Factory Preset Mode

    HS75 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

    HS75 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

    HS75 Sony Power Switch: To turn the display on or off, press the Power Switch upward The power indicator lights up in green when the display is turned on, and lights up in orange when the monitor is in power saving mode.
  • Page 10 HS75 Sony Navigating the menu...
  • Page 11 HS75 Sony Adjustment steps of each menu...
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  • Page 22: Disassembly Flow Chart

    HS75 Sony 4. Disassembly flow chart 4.1 Disassembly steps Notices 1. Lay the monitor on a steady table with a piece of clean cloth mat under it for preventing scratching the panel. 2. Be careful when open the bezel and rear cover with the tool that mentioned above for preventing mangling them.
  • Page 23 HS75 Sony Step2 Figure Description 1.Wring the two screws marked with red 2.Take stand away 1.Wring the nine screws marked with red. 2.Take away as blue arrow direction Discharge the Tool: a big screwdriver back cabinet Step: 1,Wring the four screws in the bracket marked with blue.
  • Page 24 HS75 Sony Step2 Figure Description Step: 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 HS75 Sony Discharge 1.Wring down all screws in the power board the power and main board directly. board and 2. Take all connectors in the power board the main and main board away. board...

  • Page 26: Circuit Principle Analysis

    HS75 Sony 5. Circuit principle analysis The LCD Monitor contains a main board, an inverter/power board, key board 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 27: Introduction Of Ic

    HS75 Sony 5.1.2 Introduction of IC GM5321: integrate ADC, OSD, SCALER, TCON, LVDS, RSDS 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 28 HS75 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 29 HS75 Sony On/Off /Brightness control circuit: ON/OFF control: When it works well, the high level output form PIN 68 of U201, and low in saving energy state. Brightness control: When it works well, the output PWM pulse from PIN98 of U201 adjusts the brightness, the bigger the duty, the higher the brightness.

  • Page 30: Pwpc Board

    HS75 Sony 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 31: Introduction Of Ic

    HS75 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 follows:...

  • Page 32: Introduction Of Important Function

    HS75 Sony OZ9RRB: OZ9RRB operates at a constant operating frequency. The operating frequency can be synchronized with an external signal that eliminates any undesired interference between the controller and LCD panel. The controller provides a wide dimming range control with a low-frequency Pulse Width Modulation (LPWM) dimming function.
  • Page 33 HS75 Sony 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). The output pulse makes T901 work. The voltage produced at the two terminals of T901 is offered to C Pin of IC901 after being commuted by D905 and filtered by C914, and then the whole start-up process is end.
  • Page 34 HS75 Sony Over-voltage Protection circuit: 1. ZD903 can be broken down when12V DC voltage increases, which leads to the current increase through IC902, and voltage increase of C Pin of IC901, and then it cuts off the pulse output. C Pin of IC901 2.
  • Page 35 HS75 Sony Commute and filter output circuit: When D Pin of IC901 has pulse output, which makes T901 work, while being given a low level, and there is a current in the primary coil of T901 with a voltage up terminal positive and down negative, so the secondary coil produces a reverse electromotive force.
  • Page 36 HS75 Sony b. Inverter Input interface section: 1.12V DC input, offered by power section; 2. ON/OFF enable signal, offered by MCU in the main board with its value of 0V or 5V. When OFF=0V,the inverter doesn’t work, while OFF=5V, it works under normal situation. 3. DIM signal for luminance modulation, offered by GM5321 in the main board with its range of 0~5V.

  • Page 37: Feedback Circuit

    HS75 Sony Feedback circuit: Alternating voltage exists at the two terminals of R842 when the loads are working. After being commuted and filtered, it changed to a DC sampling voltage. Apply the voltage to PIN8 of U801, and it is used to control the duty of pulse output.

  • Page 38: Trouble Shooting

    HS75 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 U301 PIN2=1.8V U302 PIN2=3.3V...
  • Page 39 HS75 Sony No picture (LED orange) No picture Measure U301 PIN2=1.8 U302 PIN2=3.3V Replace U301, U302 X201 oscillate waveform is normal Replace X201 Hs, Vs input signal are normal? Check Correspondent component. Replace U201...
  • Page 40 HS75 Sony White screen White screen Measure Q402 base is high level? Measure U301 PIN2=1.8 U302 PIN2=3.3V Check Q402/Q203 are Replace U301, U302 broken or CN401 solder? X201 oscillate waveform is normal? Check Correspondent component. Replace X201 Replace PANEL Replace U201...

  • Page 41: Pwpc Board

    HS75 Sony 6.2 PWPC board No Power No power Check AC line volt 110V or 220V Check AC line Check the voltage of C905(+) Check F901, bridge rectified circuit Check start voltage for the L pin of IC901 Check R904, R908, R911...
  • Page 42 HS75 Sony No Backlight Check CN902 Pin12 =12V Check adapter Check ON/OFF signal Check Interface board Check IC801 PIN8 voltage is normal? Check Q807,Q806 circuit Check U801 PIN2 triangular wave is normal Check C819, C820 Check U801 PIN4, 5 Check U801,Q801, Q802...

  • Page 43: Bom

    HS75 Sony 7. BOM T 782KCDNK24SNP Symbol Part No for TPV Description M1G1730 6128 GP SCREW CBPC780KCD2SP CONVERSION BOARD PWPC1742CPS8P POWER BOARD 11G6040 1 TWIST LOCK 11G6048 1 CLAMP-S 11G6054 1 LOCK WASHER 12G 425 1 RUBBER FOOT(FRONT) 15G8137 2...
  • Page 44 HS75 Sony 89G1738LAA 17 GP SIGNAL CABLE 89G402A18N IS GP POWER CORD 95G8014 12 30 GP HARNESS 12P-12P 210MM 95G8018 30 64 GP LVDS CABLE M1G 130 5120 GP SCREW M1G 330 4128 GP SCREW M3X4 M1G1140 6128 GP SCREW 4X6...
  • Page 45 HS75 Sony CBPC780KCD2SP Symbol Part No for TPV Description AIC780KCD2SP MAIN BOARD 40G 457624 1B GP CPU LABEL 40G 45762420A GP CBPC LABEL 25X6mm M1G1730 6128 GP SCREW 705G780KC87 05 AC BKT ASS'Y C201 67G305V100 7N GP KME50VB10M-CC3 5*11 C209...
  • Page 46 HS75 Sony C122 65G0603104 32 GP CHIP 0.1UF 50V X7R C123 65G0603104 32 GP CHIP 0.1UF 50V X7R C124 65G0603104 32 GP CHIP 0.1UF 50V X7R C126 65G0603104 32 GP CHIP 0.1UF 50V X7R C202 65G0603104 32 GP CHIP 0.1UF 50V X7R...
  • Page 47 HS75 Sony C242 65G0603104 32 GP CHIP 0.1UF 50V X7R C243 65G0603104 32 GP CHIP 0.1UF 50V X7R C244 65G0603330 31 GP 33PF+-5% 50V NPO C245 65G0603330 31 GP 33PF+-5% 50V NPO C246 65G0603103 32 GP CHIP 0.01UF 50V X7R...
  • Page 48 HS75 Sony D105 93G 64 42 PP BAV70 SOT-23 D301 93G 39S 34 T UDZS5.6B D302 93G 39S 34 T UDZS5.6B D303 93G 39S 34 T UDZS5.6B D304 93G 39S 34 T UDZS5.6B D305 93G 39S 34 T UDZS5.6B D306 93G 39S 34 T UDZS5.6B...
  • Page 49 HS75 Sony Q402 57G 417 4 PMBS3904/PHILIPS-SMT(04 R106 61L0603181 CHIPR 180 OHM +5% 1/16W R107 61L0603101 CHIPR 100 OHM +-5% 1/10 R108 61L0603181 CHIPR 180 OHM +5% 1/16W R109 61L0603101 CHIPR 100 OHM +-5% 1/10 R110 61L0603101 CHIPR 100 OHM +-5% 1/10...
  • Page 50 HS75 Sony R236 61L0603101 CHIPR 100 OHM +-5% 1/10 R237 61L0603101 CHIPR 100 OHM +-5% 1/10 R238 61L0603103 CHIPR 10K OHM +-5% 1/10 R239 61L0603103 CHIPR 10K OHM +-5% 1/10 R241 61L0603000 CHIPR 0OHM +-5% 1/10W R242 61L0603103 CHIPR 10K OHM +-5% 1/10...
  • Page 51 HS75 Sony R408 61L1206331 CHIP 330 OHM 5% R409 61L0603470 CHIPR 47 OHM +-5% 1/10W R410 61L0603470 CHIPR 47 OHM +-5% 1/10W R415 61L0603000 CHIPR 0OHM +-5% 1/10W R416 61L0603000 CHIPR 0OHM +-5% 1/10W U102 56G113334A 24LC02B/SNG SOIC-8PIN U104 56G4LVC 14 P...
  • Page 52 HS75 Sony PWPC1742CPS8P Symbol Part No for TPV Description PW1742CPS8SMTP POWER BOARD 40G 45762420A GP CBPC LABEL 25X6mm 51G 100510500 GP 1-2577 55G 23524500 GP ISOPARE 705G 780 56 01 IC901 ASS'Y 705G 780 93 S6 D902/D904 ASS'Y C801 67G215V471 4N GP...
  • Page 53 HS75 Sony L901 73L 174 40LSG GP LINE FILTER L902 73G 253 91 LS GP CHOKE BY LI SHIN L903 73G 253 91 LS GP CHOKE BY LI SHIN NR901 61G 58050 WT GP 5 OHM /5A NTCR R905 61G152M10458F GP...
  • Page 54 HS75 Sony C913 65G0805103 22 GP CHIP 0.01UF 25V X7R 080 C916 65G0805104 22 GP 0.1UF +-10% 25V X7R 080 C917 65G0805104 22 GP 0.1UF +-10% 25V X7R 080 C922 65G0805104 22 GP 0.1UF +-10% 25V X7R 080 C924 65G0805105 22 GP...
  • Page 55 HS75 Sony R808 61L0603202 CHIP 2KOHM 1/16W R809 61L0603221 CHIP 220 OHM 1/16W R810 61L0603160 2F GP 16KOHM 1/16W R811 61L0603431 430 OHM 1/16W R812 61L0603100 3F GP 100K OHM 1/16W R814 61L0603105 1MOHM 1/16W R815 61L0603180 3F GP 180KOHM 1/16W...
  • Page 56 HS75 Sony R902 61L1206220 22 OHM/1206 R903 61L1206335 3.3MOHM 1/4W R904 61L1206665 3F GP CHIPR 665KOHM +-1% 1/4W R906 61L1206335 3.3MOHM 1/4W R907 61L1206220 22 OHM/1206 R908 61L1206665 3F GP CHIPR 665KOHM +-1% 1/4W R909 61L1206201 200 OHM 1/4W R910...
  • Page 57 HS75 Sony 715G1447 1 PCB BOARD C832 65G601G101 1T GP 100pf +-2% 50v C833 65G601G101 1T GP 100pf +-2% 50v C834 65G601G101 1T GP 100pf +-2% 50v C835 65G601G101 1T GP 100pf +-2% 50v C905 6G 31502 1.5MM RIVET C907...
  • Page 58 HS75 Sony KEPC780KS6P Symbol Part No for TPV Description AIK780KS6SMTP KEY BOARD FOR SMT 95G 900 66 GND WIRE DP101 11G6065 1 LED HOLDER DP101 81G 41B OG 1 GP JP101 95G8014 14 22 GP HARNESS 14P-13P 285MM SW101 77G 602 1 CJ GP...

  • Page 59: Schematic

    HS75P Sony 8.Schematic 8.1 Main board CN101 RX2-IN R136 22 1/16W 　 A_GND RX2- RX2+IN 　 R137 22 1/16W RX2+ SGND SCL_IN DDCCLK SDA_IN DDCDAT A_VSYNC RX1-IN 　 DVI_5V R138 22 1/16W RX1- RX1+IN R139 22 1/16W 　 RX1+ SGND...
  • Page 60 HS75P Sony DVI=250mA D-SUB=250mA 1.8V_CVDD Close to respective power Pins +1.8V FB201 D-SUB=11mA 120OHM C202 C203 C204 C205 C206 C207 C208 C201 DVI=14mA 1.8V_AVDD 10uF/50V 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 1.8V_DVI 1.8V_PLL 1.8V_CVDD 3.3V_LVDS +3.3V 1.8V_DVI FB202 120OHM...
  • Page 61 HS75P Sony VCC5V+ TO-263 D310 CN301 SMAL240LVXRO U301 R316 4.7K 1/16W 　 AIC1084-18CM ON_OFF PBIAS VCC12V VCC12V Vcc+12V D311 C304 SMAL240LVXRO VCC5V+ +1.8V 0.1uF 12/9 d310,d311 change to SMAL240LVXR0 SMAL240LVXRO +1.8V D309 CONN C305 C306 C307 0.1uF 47uF/25V 0.1uF C302...
  • Page 62 HS75P Sony CN401 CONN LV_O[0..9] RXO0- RXO0+ LV_O0 RXO0- RXO1- RXO1+ LV_O1 RXO0+ RXO2- RXO2+ RXO1- RXOC- RXOC+ LV_O2 RXO1+ RXO3- RXO3+ LV_O3 LV_O4 RXO2- RXE0- RXE0+ LV_O5 RXO2+ RXE1- RXE1+ RXE2- RXE2+ RXOC- LV_O6 RXEC- RXEC+ RXOC+ LV_O7 RXE3-...
  • Page 63 HS75P Sony 8.2 PWPC board R901 200 　 1206 C918 R928 200 　 1206 1000PF/500V 　 DB901 R902 R927 200 1206 2KBP06M R903 C919 3.3M 　 1/8W R904 　 /1206 D902 10A/150V 1000PF/500V 665K/1206 L902 +12V C905 T901 9-10 C904 　...
  • Page 64 HS75P Sony R801 +12V CN801 T801 　 0 1/8W C801 470uF/25V Q812 C837 Q801 R845 0.1uF/25V R802 C802 ON/OFF 0 1/10W 　 Q813 10 1/8W 0.0022uF C803 R804 22pF/3KV 　 470 1/8W R805 R807 C804 　 6.2M 1/2W CONN 　...

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