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Service Manual

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

Description of PIONEER DV-383-S/WPWXTL 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 62 (click to view)





A tray cannot be opened. (An opening screen is displayed on the monitor)

Diagnosis Contents
Does the voltage of CP2302-pin 3 and pin 1 on the DVD MT Assy change normally ? Pin 5 (SW2(TRIN)): Tray is fully closed: "L" Pin 3 (SW1(TROUT)): Tray is fully opened: "L" Is a LOAD-DRV signal reaching ?

Possible Defective Points
Tray SW


Are the signals output from IC101-pin 36 and pin 37 (CN103-pin 1 and pin 2) on the DVDM Assy ? DVD MT PCB Assy Pin 4: Approx. 45V during opening tray approx. 0V during closing tray. FTS Driver IC (IC2301) Pin 5: Approx. 0V during opening tray approx. 4.5V during closing tray. Are wires of CP2302 and CP2303 on the DVDM Assy disconnected or Connector / cable damaged ? Does the voltage of CD2301-pin 5 change by pressing the Inside switch. Are the signals output from IC2301-pin 9 (F+) and pin 8 (Fâ) on the DVDM Assy ? Does 650-nm LD emit light ? Does a pickup lens move up / down ? Does an actuator spring bend ? Are plastic parts damaged ? Or is a shaft detached ? Is the turntable detached or tilted ? Is flexible cable of CP2301 on the DVD MT Assy disconnected or damaged ? Is signal output from IC4002-pin 42 (FOSO) on the DVDM Assy ? (Device control of about 1.4 V is output usually. It is fluctuated by about ± 250 mV with focus up / down.) Are the signals output from IC2301-pin 10 (MOT SPDLâ), and pin 11 (MOT SPDL+) on the DVD MT Assy ? Is pin 33,34 (STBY) fixed LOW? Is there any part detached from the spindle motor ? Or Is there any foreign object lodged in it ? Are wires of CP2303 on the DVD MT Assy disconnected or damaged ? Is signal output from IC4002-pin 37 (DMSO) on the DVDM Assy ? 7 Playback impossible (Playback stops) Does 650-nm LD deteriorate ? If the voltage at each both ends of R2303 and R2305 on the DVD MT Assy is 0.4 V or more, the 650-nm LD is definitely deteriorated. Does 780-nm LD deteriorate ? If the voltage at each both ends of R2302 and R2304 on the DVD MT Assy is 0.4 V or more, the 780-nm LD is definitely deteriorated. Are there scratches or dirt on the disc ? 8 Picture disturbance during playback (block noise, freeze, other) No sound (Picture is normal) Are there scratches or dirt on the disc ? Is there a problem with the format of the disc ? Check the waveform (ABCK, ALRCK, ACLK, ASDATA). Is signal output from IC8004-pin 7 and pin 8 on the DVD MT Assy ? Disc DVD MT PCB Assy DVD IC (IC4002) DVD MT PCB Assy Audio Dac IC (IC8004) Inside switch DVD MT PCB Assy FTS Driver IC (IC2301) Pickup Mechanism section (motor) Flexible cable / connector DVD MT PCB Assy DVD IC (IC4002) DVD MT PCB Assy FTS Driver IC (IC2301) Mechanism section (Spindle motor) Flexible cable / connector DVD MT PCB Assy DVD IC (IC4002) 650-nm LD deteriorated. (When playback of a DVD is impossible) 780-nm LD deteriorated. (When playback of a CD is impossible) Disc



Playback impossible (no focusing)



Playback impossible (Spindle does not turn)




Symptoms That May Occur When Any Of The Following ICs Is In Failure
EEP ROM (DVD MT Assy : IC4001) 16M Flash ROM (DVD MT Assy : IC4004) DVD IC (DVD MT Assy : IC4002) User's data cannot be stored in memory. The ID number is lost. The power cannot be turned on. Downloading of the firmware cannot be performed. Any kind of symptoms (no power, a failure in any of the servo, video and audio systems, etc.) may be generated, because the DVD processing is performed by a single chip. No power. Block noise is generated during playback.



64M SDRAM (DVD MT Assy : IC4005)

1 2

3 4

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