Pioneer-DV-2850S-Service-Manual电路原理图.pdf

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1、 ORDER NO. PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A. PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01

2、, Singapore 159936 PIONEER CORPORATION 2005 TA DB /ON O E / L SE OP ENUM NU E UR E ME U ? ? DVD PLAYER DV-2850 DV-2850-S RRV3123 DVD PLAYER DV-2850-S THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S). ModelTypePower Requirement Region No.Remarks DV-2850-SWYXTLAC220-240V2 DV-2850-SWVXTL

3、AC220-240V2 For details, refer to Important Check Points for Good Servicing . T-ZZR MAR. 2005 printed in Japan RadioFans.CN 收音机爱 好者资料库 DV-2850-S 2 1234 1234 C D F A B E SAFETY INFORMATION This service manual is intended for qualified service technicians ; it is not meant for the casual do- it-yourse

4、lfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual. Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty. I

5、f you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so and refer the repair to a qualified service technician. WARNING ! THE AEL (ACCESSIBLE EMISSION LEVEL) OF THE LASER POWER OUTPUT IS LESS THAN CLASS 1 BUT THE LASER COMPONENT IS CAPAB

6、LE OF EMITTING RADIATION EXCEEDING THE LIMIT FOR CLASS 1. A SPECIALLY INSTRUCTED PERSON SHOULD DO SERVICING OPERATION OF THE APPARATUS. LASER DIODE CHARACTERISTICS FOR DVD : MAXIMUM OUTPUT POWER : 5 mW WAVELENGTH : 650 nm FOR CD :MAXIMUM OUTPUT POWER : 5 mW WAVELENGTH : 780 nm LABEL CHECK Location:

7、inside of the unit VORSICHT: SICHTBARE UND UNSICHTBARE LASERSTRAHLUNG,WENNABDECKUNG GEFFNET NICHT DEM STRAHL AUSSETZEN ! CAUTION: VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN. AVOID EXPOSURE TO BEAM. ADVARSEL: SYNLIG OG USYNLIG LASERSTRLING VED BNING UNDG UDSTTELSE FOR STRLING. VARO!: AVATTAESSA

8、ALTISTUT NKYV JA NKYMTTMLLE LASERSATEIL YLLE. L KATSO STEESEN. VARNING: SYNLIG OCH OSYNLIG LASERSTRLNING NR DENNA DEL R PPNAD BETRAKTA EJ STRLEN. 7260000356 SH CUIDADO: RADIACIN LSER VISIBLE E INVISIBLE AL ESTAR ABIERTO. EVITAR EXPOSICIN AL RAYO. Additional Laser Caution : See page 53. 1. Laser diod

9、e is driving with Q2303,Q2305(650nm LD) and Q2302, Q2304(780nm LD)on the DVD MT PCB Assy. Therefore, when short-circuit between the emitter and collector of these transistors or the base voltage is supplied for transistors turn on, the laser oscillates. (failure mode) In the test mode , there is the

10、 mode that the laser oscillates except for the disc judgment and playback. LD ON mode in the test mode oscillates with the laser forcibly. 2. When the cover is open, close viewing through the objective lens with the naked eye will cause exposure to the laser beam. (Printed on the Rear Panel) RadioFa

11、ns.CN 收音机爱 好者资料库 DV-2850-S 3 5678 56 7 8 C D F A B E Important Check Points for Good Servicing In this manual, procedures that must be performed during repairs are marked with the below symbol. Please be sure to confirm and follow these procedures. 1. Product safety Please conform to product regulat

12、ions (such as safety and radiation regulations), and maintain a safe servicing environment by following the safety instructions described in this manual. 1 Use specified parts for repair. Use genuine parts. Be sure to use important parts for safety. 2 Do not perform modifications without proper inst

13、ructions. Please follow the specified safety methods when modification(addition/change of parts) is required due to interferences such as radio/TV interference and foreign noise. 3 Make sure the soldering of repaired locations is properly performed. When you solder while repairing, please be sure th

14、at there are no cold solder and other debris. Soldering should be finished with the proper quantity. (Refer to the example) 4 Make sure the screws are tightly fastened. Please be sure that all screws are fastened, and that there are no loose screws. 5 Make sure each connectors are correctly inserted

15、. Please be sure that all connectors are inserted, and that there are no imperfect insertion. 6 Make sure the wiring cables are set to their original state. Please replace the wiring and cables to the original state after repairs. In addition, be sure that there are no pinched wires, etc. 7 Make sur

16、e screws and soldering scraps do not remain inside the product. Please check that neither solder debris nor screws remain inside the product. 8 There should be no semi-broken wires, scratches, melting, etc. on the coating of the power cord. Damaged power cords may lead to fire accidents, so please b

17、e sure that there are no damages. If you find a damaged power cord, please exchange it with a suitable one. 9 There should be no spark traces or similar marks on the power plug. When spark traces or similar marks are found on the power supply plug, please check the connection and advise on secure co

18、nnections and suitable usage. Please exchange the power cord if necessary. 0 Safe environment should be secured during servicing. When you perform repairs, please pay attention to static electricity, furniture, household articles, etc. in order to prevent injuries. Please pay attention to your surro

19、undings and repair safely. 2. Adjustments To keep the original performance of the products, optimum adjustments and confirmation of characteristics within specification. Adjustments should be performed in accordance with the procedures/instructions described in this manual. 4. Cleaning For parts tha

20、t require cleaning, such as optical pickups, tape deck heads, lenses and mirrors used in projection monitors, proper cleaning should be performed to restore their performances. 3. Lubricants, Glues, and Replacement parts Use grease and adhesives that are equal to the specified substance. Make sure t

21、he proper amount is applied. 5. Shipping mode and Shipping screws To protect products from damages or failures during transit, the shipping mode should be set or the shipping screws should be installed before shipment. Please be sure to follow this method especially if it is specified in this manual

22、. DV-2850-S 4 1234 1234 C D F A B E CONTENTS SAFETY INFORMATION.2 1. SPECIFICATIONS .5 2. EXPLODED VIEWS AND PARTS LIST.6 2.1 PACKING SECTION .6 2.2 EXTERIOR SECTION. 8 2.3 05 DVD MECHA SECTION.10 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM.12 3.1 BLOCK DIAGRAM.12 3.2 OVERALL WIRING CONNECTION DIAGRAM.14

23、 3.3 DVD MT PCB (1/5) ASSY.16 3.4 DVD MT PCB (2/5) ASSY.18 3.5 DVD MT PCB (3/5) ASSY.20 3.6 DVD MT PCB (4/5) ASSY.22 3.7 DVD MT PCB (5/5) ASSY.24 3.8 OPERATION, OPERATION 2 and OPERATION 3 PCB ASSYS .26 3.9 POWER PCB (1/2) ASSY.28 3.10 POWER PCB (2/2) ASSY.30 3.11 WAVEFORMS.32 4. PCB CONNECTION DIAG

24、RAM .35 4.1 LOADING and SW PCB ASSYS.35 4.2 DVD MT PCB ASSY.36 4.3 OPERATION, OPERATION 2 and OPERATION 3 PCB ASSYS .40 4.4 POWER PCB ASSY.44 5. PCB PARTS LIST .46 6. ADJUSTMENT .52 6.1 WHEN REPLACING DVD DECK.52 6.2 TEST MODE .53 6.3 DISC REMOVAL METHOD.54 7. GENERAL INFORMATION.55 7.1 DIAGNOSIS.55

25、 7.1.1 TEST MODE IN .55 7.1.2 DISPLAY SPECIFICATION OF THE TEST MODE.56 7.1.3 FUNCTIONAL SPECIFICATION OF THE SHORTCUT KEY .57 7.1.4 SPECIFICATION OF MODEL INFORMATION DISPLAY.58 7.1.5 FUNCTIONAL SPECIFICATION OF THE SERVICE MODE.59 7.1.6 METHOD FOR DIAGNOSING DEGRADATION OF THE LDS ON THE PICKUP AS

26、SY .60 7.1.7 TROUBLE SHOOTING.61 7.2 DISASSEMBLY.63 7.3 IC INFORMATION.68 7.4 DISC / CONTENT FORMAT PLAYBACK COMPATIBILITY .78 8. PANEL FACILITIES .80 8.1 FRONT PANEL SECTION .80 8.2 DISPLAY .81 8.3 REMOTE CONTROL .82 DV-2850-S 5 5678 56 7 8 C D F A B E 1. SPECIFICATIONS Specifications General Syste

27、m . . . . . . . . . . . . . . . . . . . . . . DVD player Power requirements . .AC 220240 V, 50/60 Hz Power consumption . . . . . . . . . . . . . . . . . 7 W Power consumption (standby) . . . . . . 0.75 W Weight . . . . . . . . . . . . . . . . . . . . . . . .1.7 kg Dimensions: DV-2850 . . . 420 (W) x

28、 49.5 (H) x 213.6 (D) mm Operating temperature . . . . . . . +5C to +35C Operating humidity . . . . . . . . . . . . . 5% to 85% (no condensation) AV connector output AV Connector (21-pin connector assignment) AV connector output . . . . . . . 21-pin connector This connector provides the video and au

29、dio signals for connection to a compatible colour TV or monitor. PIN no. 1. . . . . . . . . . . . . . . . . . . . . . . . Audio 2/R out 3. . . . . . . . . . . . . . . . . . . . . . . . . . Audio 1/L out 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND 7. . . . . . . . . . . . . .

30、 . . . . . . . . . . . . . . . . . . B out 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Status 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G out 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . R out 17. . . . . . . . . . . . . . . . . . . . . . . .

31、 . . . . . . . GND 19. . . . . . . . . . . . . . . . . . . . . . . . . . . Video out 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND Component video output Y (luminance) - Output level . . . 1 Vp-p (75 ) PB (color) - Output level PR (color) - Output level . . . . . 0.7 Vp-p (75 )

32、 Jack S-video output Y (luminance) - Output level . . . 1 Vp-p (75 ) C (color) - Output level. . . . .286 mVp-p (75 ) Jack . . . . . . . . . . . . . . . . . . . . . . . . . . . S-video Video output Output level . . . . . . . . . . . . . . . 1 Vp-p (75) Jack . . . . . . . . . . . . . . . . . . . . .

33、. . . . . . . . . RCA Audio output ( 1 stereo pair) Output level . . . . . . . . . . During audio output 200 mVrms (1 kHz, 20 dB) Number of channels . . . . . . . . . . . . . . . . . . . 2 Jacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . .RCA Digital audio characteristics Frequency response . . . . . . . . 4 Hz to 44 kHz (DVD fs: 96 kHz) S/N ratio . . . . . . . . . . . . . . . . . . . . . . . . .115 dB Dynamic r