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Zenith DVT310 Manual

Summary of DVT310

  • Page 1

    - 1-1 - section 1. General • servicing precautions....................................................................................................... 1-2 • esd precautions ................................................................................................................... 1-4 • sp...

  • Page 2: Section 1. General Part

    Section 1. General part ❏ servicing precautions notes regarding handling of the pick-up 1. Notes for transport and storage 1) the pick-up should always be left in its conductive bag until immediately prior to use. 2) the pick-up should never be subjected to external pressure or impact. 2. Repair not...

  • Page 3

    Notes regarding compact disc player repairs 1. Preparations 1) compact disc players incorporate a great many ics as well as the pick-up (laser diode). These components are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components can be damaged,...

  • Page 4: ❏ Esd Precautions

    ❏ esd precautions electrostatically sensitive devices (esd) some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called electrostatically sensitive devices (esd). Examples of typical esd devices are integrated circuits and some field-effe...

  • Page 5

    - 1-6 - ❏ location of customer controls front panel display window play/step open/close pause/clear mono/stereo memory down - tuning - up stop standby/on phones volume open/close button tuning (down/up)/ skip/scan buttons play/step button remote sensor phones connector volume controller standby/on d...

  • Page 6

    - 1-7 - rear panel.

  • Page 7: Section 3. Electrical

    - 3-1 - section 3. Electrical troubleshooting guide 1. System check flow.

  • Page 8: 2. Power Check Flow

    - 3-2 - 2. Power check flow.

  • Page 9: 3. Test & Debug Flow

    - 3-3 - 3. Test & debug flow.

  • Page 10

    - 3-4 -.

  • Page 11

    - 3-5 -.

  • Page 12

    - 3-6 -.

  • Page 13

    - 3-7 -.

  • Page 14

    - 3-8 -.

  • Page 15: And Debugging

    - 3-9 - ❏ details and waveforms on system test and debugging 1. System 27mhz clock,reset,flash r/w signal 1) mt1379 main clock is at 27mhz(x501) 2) mt1336 reset is high active.

  • Page 16

    - 3-10 - 3) rs232 waveform during procedure(downloading) 4) flash r/w enable signal during download(downloading).

  • Page 17: 2. Sdram Clock

    - 3-11 - 2. Sdram clock 1) mt1379 main clock is at 27mhz(x501) 3. Tray open/close signal 1) tray open/close waveform.

  • Page 18

    - 3-12 - 2) tray close waveform 3) tray open waveform.

  • Page 19

    - 3-13 - 4. Sled control related signal (no disc condition) 5. Lens control related signal(no disc condition).

  • Page 20: (No Disc Condition)

    - 3-14 - 6. Laser power control related signal (no disc condition) 7. Disc type judgement waveform.

  • Page 21

    - 3-15 -.

  • Page 22: 8. Focus On Waveform

    - 3-16 - 8. Focus on waveform.

  • Page 23

    - 3-17 - 9. Spindle control waveform (no disc condition).

  • Page 24

    - 3-18 - 10. Tracking control related signal(system checking).

  • Page 25: 11. Rf Waveform

    - 3-19 - 11. Rf waveform 12. Mt1379 audio optical and coaxial output (aspdif).

  • Page 26

    - 3-20 - 13. Mt1379 video output waveform 1) full colorbar signal(cvbs) 2) y.

  • Page 27

    - 3-21 - 3) c 14. Audio output form audio dac 1) audio related signal.

  • Page 28: Section 5. Speaker Part

    - 5-1 - section 5. Speaker part ❏ model: lhs-d6235t 850 851 a800 852 853 862 864.

  • Page 29: Section 5. Speaker Part

    - 5-2 - section 5. Speaker part ❏ model: lhs-d6235w 853 854 855 856 864 852 851 850

  • Page 30

    2-1 2-2 section 2. Audio part ❏ block diagram.

  • Page 31

    2-3 2-4 ❏ shematic diagrams • main schematic diagram.

  • Page 32

    2-5 2-6 • front schematic diagram.

  • Page 33

    2-7 2-8 • power schematic diagram note: warning parts that are shaded are critical with respect to risk of fire or electrical shock. Note: 1. Shaded( ■) parts are critical for safety.Replace only with specified part number. 2. Voltages are dc-measured with a digital voltmefer during play mode..

  • Page 34

    2-9 2-10 ❏ wiring diagram note: warning parts that are shaded are critical with respect to risk of fire or electrical shock..

  • Page 35

    2-11 2-12 loc. Part pin num. Stop dvd play ic650 lc8767xx 1 0 0 2 0 0 3 0 0 4 4.54 4.54 5 0 0 6 0 0 7 5 5 8 0 0 9 4.7 4.7 10 x x 11 4.84 4.84 12 x x 13 x x 14 0 0 15 2.34 2.34 16 2.45 2.45 17 4.86 4.86 18 4.84 4.84 19 0.57 0.57 20 x x 21 1.65 1.65 22 4.88 4.88 23 4.88 4.88 24 0 0 25 2.2 2.2 26 4.37 ...

  • Page 36

    2-13 2-14 loc. Part pin num. Stop dvd play 7 -4.5 -4.5 8 0 0 9 0 0 10 0 0 11 0 0 12 0 0 13 0 0 14 0 0 15 0 0 16 4.5 4.5 ic450 kia4558 1 0 0 2 0 0 3 0 0 4 -9 -9 5 0 0 6 0 0 7 0 0 8 9 9 ic601 m60446afp 5 5.2 5.2 30 -5.3 -5.3 42 5 5 ic200 tda7265 1 -18.7 -18.7 2 0 0 3 18.6 18.6 4 0 0 5 9.3 9.3 6 -18.6 ...

  • Page 37

    2-15 2-16 ❏ printed circuit diagrams • main/power/jack p.C board (solder side).

  • Page 38

    2-17 2-18 • main/power/jack p.C board (component side).

  • Page 39

    2-19 2-20 • front p.C. Board (solder side) • front p.C. Board (component side).

  • Page 40

    3-23 3-24 ❏ dvd part schematic diagrams • mpeg schematic diagram.

  • Page 41

    3-26 3-25 • servo schematic diagram.

  • Page 42

    3-27 3-28 • audio schematic diagram.

  • Page 43

    3-29 3-30 • interface schematic diagram.

  • Page 44

    3-31 3-32 ❏ voltage sheet (ic&tr).

  • Page 45

    3-33 3-34 ❏ printed circuit diagram • dvd p.C. Board(solder side).

  • Page 46

    3-35 3-36 • dvd p.C. Board (component side).

  • Page 47

    4-1 4-2 267 fan a46 351 454 301 a48 a47 305 302 303 a41 262 a26 a43 263 250 261 252 454 454 459 458 265 264 section 4. Exploded views • cabinet and main frame section note) refer to “section 6 replacement parts list” in order to look for the part number of each part..

  • Page 48

    4-3 4-4 • deck mechanism exploded view.