Denon DVD-3800 Service Manual eng, Denon
[ Pobierz całość w formacie PDF ]
For U.S.A., Canada, Europe, Asia & Korea model Digital Player SERVICE MANUAL MODEL DVD-3800 DVD AUDIO-VIDEO PLAYER Some illustrations using in this service manual are slightly different from the actual set. 16-11, YUSHIMA 3-CHOME, BUNKYOU-KU, TOKYO 113-0034 JAPAN Telephone: 03 (3837) 5321 X0137 NC 0207 DVD-3800 SAFETY PRECAUTIONS The following check should be performed for the continued protection of the customer and service technician. LEAKAGE CURRENT CHECK Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power cord is less than 460 kohms, the unit is defective. SPECIFICATIONS Signal System: NTSC/PAL Applicable Discs: (1) DVD-Audio/DVD-Video discs 1-layer 12 cm single-sided discs, 2-layer 12 cm single-sided discs, 2-layer 12 cm double-sided discs (1 layer per side) 1-layer 8 cm single-sided discs, 2-layer 8 cm single-sided discs, 2-layer 8 cm double-sided discs (1 layer per side) (2) Compact discs (CD-DA, Video CD) 12 cm discs, 8 cm discs S-Video Output: Y output level: 1 Vp-p (75 Ω /ohms) C output level: 0.286 Vp-p (For U.S.A., Canada, Asia & Korea model) 0.3 Vp-p (For Europe model) Output connectors: S connectors, 2 setS AV 1 connector, 1 set (For Europe model) Video Output: /ohms) Output connector: Pin-plug jacks, 2 setS AV 1 connector, 1 set/AV2 connector, 1 set (For Europe model) 1 Vp-p (75 Ω Component Output: Y output level: 1 Vp-p (75 Ω /ohms) P B /C B output level: 0.648 Vp-p (75 Ω /ohms) (For U.S.A., Canada, Asia & Korea model) 0.7 Vp-p (75 Ω /ohms) (For Europe model) P R /C R output level: 0.648 Vp-p (75 Ω /ohms) (For U.S.A., Canada, Asia & Korea model) 0.7 Vp-p (75 Ω /ohms) (For Europe model) Output connector: Pin jack, 1 set RGB Output: /ohms) (For Europe model) Output connector: AV 1 connector, 1 set (For Europe model) 0.7 Vp-p (75 Ω Audio Output: Output level: 2 Vrms 2 channel (FL, FR) output connector: Pin jacks, 2 sets Multi channel (C, SW, SL, SR) output connector: Pin jack, 1 set AV 1, 1 set/AV 2, 1 set (For Europe model) Audio Output Properties: (1) Frequency response 1 DVDs (linear PCM) : 2 Hz to 22 kHz (48 kHz sampling) : 2 Hz to 44 kHz (96 kHz sampling) : 2 Hz to 88 kHz (192 kHz sampling) 2 CDs : 2 Hz to 20 kHz (2) S/N ratio 1 DVDs : 116 dB 2 CDs : 116 dB (3) Total harmonic distortion 1 DVDs : 0.0015 % 2 CDs : 0.0018 % (4) Dynamic range 1 DVDs : 108 dB 2 CDs : 100 dB Digital Audio Output: Optical digital output : Optical connector, 1 set Coaxial digital output : Pin jack, 1 set Power Supply: AC 120 V, 60 Hz (For U.S.A. & Canada model) AC 230 V, 50 Hz (For Europe & Asia model) AC 220 V, 50 Hz (For China model) AC 220 V, 60 Hz (For Korea model) Power Consumption: 30 W (For U.S.A. & Canada model) 32 W (For Europe, Asia & Korea model) Maximum External Dimensions: 434 (W) × 132 (H) × 343 (D) mm (including protruding parts) Mass: 10.0 kg Remote Control Unit: RC-553 Type: Infrared pulse Power Supply: DC 3 V, 2 "AA" /R6P batteries ∗ Design and specifications are subject to change without notice in the course of product improvement. 2 Output level: Output level: DVD-3800 Iop Measurement Method (Diagnostics of Traverse Unit) Diagnostics of optical pickup (Replacing Traverse Unit) as shown as below. 1. Arrange of Judgment (1) Check read discs Disc no read, unsteady playback, etc. (2) Laser current (Iop) check Check the Iop (Laser drive current). If the present Iop value exceeds +50% of the initial value, replace the Traverse Unit with a new one. (3) Replacing the Traverse Unit Traverse Unit replacing (See page 8 and 9). No mechanical adjustment is necessary after the replacement. DVD mA CD mA 2. Iop Measurement Method Laser current initial value Nearby C532 DVD laser drive current measuring points 17 7 18 6 14 1 1 28 40 15 28 29 39 32 17 1 8 4 5 1 16 60 41 61 40 15 1 80 21 1 1 20 1 40 24 8 14 40 21 7 1 20 21 1 20 75 51 76 50 11 26 1 100 12 48 1 25 24 37 25 36 CD laser drive current measuring points [CD] IOP silk point GU-3389 P.W.B. (foil side) (1) DVD laser current measurement Playback the title 1/chapter 1 of DVD test disc (DVDT-S01) or the equivalent. • Connect the oscilloscope to the above mentioned point. • DVD laser current = Measured Voltage Value / 39 (Resistance Value) (2) CD laser current measurement • Playback the track 1 of CD test disc (TCD-784) or the equivalent. • Connect the oscilloscope to the above mentioned point. • CD laser current value = Measured Voltage Value / 39 (Resistance Value) 3 DVD-3800 Note for Handling the Laser Pick-up The protection for the damage of laser diode. If you want to change the optical device unit from any other units, you must keep the following. (1) It should be done at the desk already took measures the static electricity in care of removing the OPU's (Optical device unit) connector cable. (2) Workers should be put on the "Earth Band". (3) It shold be done to add the solder to the short land to prevent the broken Laser diode before removing the 24P FFC cable. (4) Don't touch OPU's connector parts carelessly. Replacement of the Traverse Unit When repairing, carry out failure diagnostics by following the procedure described below. If the present value of the laser drive current is 50% up to initial value, it is the point of the pickup replacement. In case of the pickup replacement, replace the Traverse Unit with no adjustment. The initial value is indicated on the label on back side of Mecha. NO DISC indicated, Playback not smooth, etc. Laser drive current check HF signal check Present value: 50% up to initial value Traverse Unit replacement (refer to page 8) Laser drive current check after replacement. If the present value is less than 80mA, write on the new label by hand, put on the new label over the old label. If the present value exceeds 80mA, replace the Traverse Unit with a new one. Cause: Damaged electrostatically when replaced. 4 DVD-3800 DISASSEMBLY ( Follow the procedure below in reverse order when reassembling ) 1. Top Cover (1) Remove 10 screws 1 on the top and both sides, and 2 screws 2 on the rear. (2) Widen the Top Cover a little laterally, then detach it with sliding in the arrow direction. 1 2 1 1 2. Loader Panel, Front Panel Power P.W.B. 2-1. When the Disc Tray can be ejected electrically (1) After removing the Top Cover, proceed as follows. (2) Plug the power cord to the wall outlet, switch on the power, and press the “OPEN/CLOSE” button to open the Disc Tray. (3) Detach the Loader Panel by lifting it in the arrow direction. (4) Press the “OPEN/CLOSE” button to close the Disc Tray, then unplug the power cord. (5) Disconnect the wire (CX025, CX041) connecting the Front Panel’s P.W.B. and the Power PWB in the Chassis. (6) Remove 4 top screws 3 and 4 bottom screws 4 , then detach the Front Panel to the arrow direction. (7) Disconnect the FFC (CX171) connecting the Front Panel’s P.W.B. and the Main P.W.B. in the Chassis. Front Panel 3 Power Switch Loader Panel Main P.W.B. 4 “OPEN/CLOSE” button 5 [ Pobierz całość w formacie PDF ] |