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SONY DVPNS705V
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of SONY DVPNS705V Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 99 (click to view)
1-3-2. When the 33 MHz signal appears at CPUCK � WAIT signal check Observe XWAIT (pin-yj) of SYSCON (IC104) with an oscilloscope. If it is fixed to �L� (0V). t Observe CS2X to CS5X (pinsy; to yd). If CS2X or CS3X is �L�. t AVD (IC403) has defective soldering or AVD is defective. If CS4x or CS5X is �L�. t ARP & SERVO (IC301) has defective soldering or ARP & SERVO is defective. If any one of the above is not �L�. t XWAIT or CSnX is short-circuited or has the defective soldering or AVD (IC403) is defective or ARP & SERVO (IC301) is defective. Center voltage t The XWAIT line has defective soldering or is short-circuited or AVD (IC403) is defective or ARP & SERVO (IC301) is defective or SYSCON (IC104) is defective. � CSnX signal check Observe CS0X to CS5X (pins-tk to yd) of SYSCON (IC104) with an oscilloscope. If they are fixed to �L� (0V) or if to center voltage t Check that the ICs do not have the defective soldering or is shortcircuited with the other signal lines or SYSCON (IC104) is defective. CS0X: ROM (IC106 or IC107) CS2X, CS3X: AVD (IC403) CS4X, CS5X: ARP & SERVO (IC301) If the trouble symptom does not apply to any of the above phenomenon, SYSCON (IC104) or ROM (IC106 or IC107) is defective. 2. Test mode menu is displayed but the machine stops when menu is selected 2-1. AVD (IC403) check Observe SDCLKO (pin-<zxm ) of AVD (IC403) with an oscilloscope. 95 MHz t No problem 27 MHz t Observe the XRST, HA, HD, XRD, XWRH INT and CS signal waveform at the respective pins of AVDEC, AVD (IC403) is defective. If the signal is other than the above frequencies t AVD (IC403) 27MHz signal line (CLKI (pin-<zb, ), SCLKIN (pin<zn/ )) is short-circuited, IC mount is defective, AVD (IC403) is defective, PLL (IC103) is defective. 2-2. INT signal check Observe INT0 to 2 (pins-qh to qk) of SYSCON (IC104) with an oscilloscope. If they are fixed to �L� (0V) or fixed to the center voltage t Check that the ICs do not have the defective soldering, or are short-circuited, SYSCON (IC104) is defective, or the following ICs are not defective. INT0: AVD (IC403) INT1, INT2: ARP & SERVO (IC301) 2-3. If any abnormality cannot be confirmed by the above-described checks, check the CS signal that is currently output. The CS signal other than CS0X is being output. t IC mount is defective or the IC is defective depending on the moving CS signal. CS2X, CS3X: AVD (IC403) CS4X, CS5X: ARP & SERVO (IC301) If the trouble is not applicable to any of the above phenomenon, SYSCON (IC104) or ROM (IC106 or IC107) is defective.

3. If the message �SDSP No Ack� appears after the menu is displayed. 3-1. ARP & SERVO clock signal check Check frequency of CLKIN (pin-<zb/ ) 33 MHz t Normal Frequency other than 33 MHz t CLKIN is short-circuited or defective soldering or PLL (IC103) is defective or ARP & SERVO (IC301) is defective 3-2. ARP & SERVO (IC301) PLL oscillation check Observe PLCKO (pin-ij) of ARP & SERVO (IC301) with an oscilloscope. If the pin is fixed to either �L� (0V) or �H� (3.3V). If XRST if fixed to �L�. XRST has the defective soldering, In all other cases. ARP & SERVO (IC301) is defective If it is oscillating. HA [0 to 7] are HD [8 to 15] are short-circuited, check XSDSPIT and XSDSPCS or ARP & SERVO (IC301) is defective. 4. If trouble occurs at the specific item of the �Diag All Check�. IC mount of the NG item is defective or IC is defective. 5. Picture and audio are not output. Check connection of CN601 (AEP, UK, RUS) CN602 Check for the defective connection of flat cable and check of damage of the flat cable. 6. Picture is output but audio is not output. Check the audio data output (at pins-wf, wk, and wl) of AVD (IC403) The audio data is not output. t AVD (IC403) or audio DAC (IC502, 504) mount is defective or power supply is defective or AVD (IC403) or audio DAC (IC502, 504) is defective. PLL (IC103) 512fs output check If the frequency or waveform has abnormality. t The signal line has defective soldering or the signal line is shortcircuited with other signal lines or PLL (IC103) is defective. 7. Audio is output but picture is not output. (EXCEPT NS705V) Observe pins-ej, ek, el, rs, rd and rf of VDAC (IC604) with an oscilloscope. If the analog signal is not output. t The signal line has the defective soldering or is short-circuited or parts are defective or VDAC (IC604) is defective. Audio is output but picture is not output. (NS705V) Observe pins-tg, tj, tl, ya, yd and yg of AVD (IC403) with an oscilloscope. If the analog signal is not output. t The signal line has the defective soldering or is short-circuited or parts are defective or AVD (IC403) is defective.

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