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SERVICE MANUAL HSM515AV 51CM CTV SEP04 SERVHSM515AV...
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Hisense UOC 2004-10-15 21 ¨ & 14 ¨ Color TV Service Manual Catalogue 1. Technology Specification and Feature…..……………………… Page 1 2. The IC list …………………………………………………… Page 2 3. Signal process……………………………………………………… Page 2 4. The horizontal and vertical circuit………………………………… Page3 5. Power supply……………………………………………………….. Page 3 6.
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2. IC list Table 1, the main IC and functions Number Function Remark Power supply KA5Q0765RT N611 CPU + SIGNAL PROCESSER OM8370/TDA9370 N301 Field driver STV9302A N401 Sound driver AN7522N N161 AV SWITCH TC4052BP N801 (Video) N121(sound) Memory AT24C08 N702 Photo-coupler HS817B N504...
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4. Horizontal and vertical circuit: Through Synchronous separating circuit, the video signal is divided into horizontal- Synchronizing signal and Vertical-Synchronizing signal. The horizontal-Sync pulse coming from pin 33 is transferred to the horizontal-drive transistor. The cathode driving voltage 180V vertical drive voltage +15V and –15V are all generated from FBT.
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Appendix 1: IC illustration Fig.1 OM8370 illustration Pin1: Standby control,“ 1” is on,“ 0” is off. Pin2: SCL. Pin3: SDA.
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Pin4: Tuning PWM output. Pin5: Auto AV control SW, connected with the SCART 8th pin. Input. The rising edge or the falling edge operates. Pin6: Key board input. Pin7: Volume Pin8: Mute control,“ 1” is mute,“ 0” is off. Pin9: Pin12、Pin18、Pin30、Pin35、Pin41、Pin55: GND. Pin10: BAND1 control output.
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Pin30: GND. Pin31: Sound loop filter. Pin32: AVL filter. Pin33: Horizontal drive signal output, needs a resistor in series to +8V. Pin34: Sandcastle output/flyback input, Pin35: External audio input, this pin should be grounded in this chassis. Pin36: EHT tracking/ overvoltage protection. If something is wrong, the anode high voltage rises, the heater voltage will rise too.
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Appendix 2: ADJUST METHOD 6.1 Main power +B setting Receive standard color pattern RF signal , set picture to “ Standard Mode ” . Adjust VR501 , to get +B (VD542 -) voltage =110 V 6.2 I 2 C bus control adjustment methed: How to enter and exit factory mode( with customer’s remote controller) 1.Press [menu] key...
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Menu3 ITEM Preset value Definition Bright in W/B mode Contrast in W/B mode Screen mode (press VOL+/- or CH+/- key to enter or exit ). Adjust Screen knob on FBT to adjust the bright of the line Red bias adjust Green bias adjust Red drive adjust Green drive adjust...
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Menu5 ITEM Preset value Definition MODE STANDARD Picture mode selection You can select four modes: STANDARD, VIVID, MILD and USER BRIGHT Preset Bright value for the mode you have selected above CONTRAST Preset contrast value COLOR Preset color value SHARP Preset sharpness value f SC BRIGHT Preset bright value for screen mode...
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Menu7 ITEM Preset value Definition IFFS 38.9MHz IF Frequency Selection DK system selection I system selection BG system selection M system selection SIF PRI SIF Priority AV2 selection S-VIDEO S-video selection YUV selection VOL ADJ POINT VOL curve point selection VOL ADJ VALUE VOL curve value adjusting on the selected point...
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Menu9 ITEM Preset value Definition BAND Must be 2 according to the TUNER START ON 0: Last memory mode: TV_mode 1 : Power on standby mode 。 LOGO No use ON DELAY Power on delay time adjust ON DELAY M Preset on delay time CURTAIN OSD FORM...
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NAME TYPE QTY. UNIT LOCATION MAIN PCB PX20030-4C △A1/A2 CARBON FILM RESISTOR RT13-1/6W-300R-J R913 CARBON FILM RESISTOR RT13-1/6W-22R-J R914 CARBON FILM RESISTOR RT13-1/6W-3K3-J R735 CARBON FILM RESISTOR RT13-1/6W-10K-J R396 CARBON FILM RESISTOR RT14-1/4W-100R-J R486 FUSE RESISTOR RF10-1/2W-1R0-J R473B FUSE RESISTOR RF10-1W-R27-J R555 R565 R566 FUSE RESISTOR...
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