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1、T echnical Manual DVD PLAYER RDV-985 Table of Contents Specification.1 Information.217 Parts List.3747 Block Diagrams.1822 PCB Assembly.3436 Schematic Diagram .2333 SHINSEN-BLD. 4F 10-10 SHINSEN-CHO, SHIBUYA-KU, TOKYO 150-0045, JAPAN Serial. NO. Beginning Quality Uncompromised Y-356A-0109/W THE ROTE
2、L CO., LTD. Specifications General Readable Discs:DVD VIDEO, Audio CD, VIDE CD, SUPER VIDEO CD Video Fomat:PAL or NTSC selectable Video Output VIDEO OUT (pin jack):1.0 Vp-p (75 ohms) S-VIDEO OUT (S jack): Y Output:1.0 Vp-p (75 ohms) C Output:286 mVp-p (75 ohms) Horizontal Resolution:500 Lines Signal
3、 to Noise Ratio:65 dB Audio Output ANALOG OUT (pin jack):2.0 Vrms (10 kohms) DIGITAL OUT (optical):- 21 to -15 dBm (peak) Audio Characteristics Frequency Response: CD: (sampling frequency 44.1 kHz):2 Hz to 20 kHz DVD (sampling frequency 48 kHz):2 Hz to 22 kHz DVD (sampling frequency 96 kHz):2 Hz to
4、44 kHz Dynamic Range: 16 bit:More than 100 dB 20 bit:More than 108 dB 24 bit:More than 108 dB Wow and Flutter:Unmeasurable (less than Total Harmonics Distortion:Less than 0.002% 0.002%) Physical Power Requirements: USA Version:AC 120V, 60 Hz European Version:AC 230V, 50 Hz Power Consumption:23 W (PO
5、WER ON), 2 W (STANBY mode) Weight:4.7 kg (10.4 lbs) Dimensions (W x H x D):445 x 112 x 338 mm 171/2 x 47/16 x 135/16 inch RadioFans.CN 收音机爱 好者资料库 Appearance RadioFans.CN 收音机爱 好者资料库 (1) Auto adjustment method (2) Confirmation of DVD RF level (3) Confirmation of CD jitter level and RF level If micropr
6、ocessor (IC401, IC402, IC714, IC716) or servo board (LEA10047) is replaced, initialize ? the DVD player in the following matter: ref. separate sheet. Adjustment and confirmation matter 1.The oscilloscope is connected between 1(RFOP) of CN104 and 2(GND). 2.Reproduction of the test disc ( VT-502) made
7、 by JVC. 3.It is confirmed that RF LEVEL is 350mVp-p 150mVp-p. 4.When there is disorder in the waveform road cuts etc, test disk is exchanged and measured. 1. The CD jitter meter is connected between 11(GND) of CN104 and 12(FLTOUT). The RF level is observed at the same time. 2.The first test disk(CT
8、S-1000) made of JVC is reproduced. 3.It is confirmed that RF LEVEL is 360 100mVp-p.? ? 5. When there is disorder in the waveform road cuts etc, test disk is exchanged and measured. FRONT SIDE 12 1 RFOPGNDGNDFLTOUT 121112 CN104 Main Adjustment DVD SERVO CONTROL PWB + + RDV-985 is adjusted from issue
9、machine because of the FL display on the way. Please go in the adjustment method before changes according to the following procedures. Attention ! Measurement CN104 pin1 GND:CN104 pin2 Adjustment point Refer to Fig.2 Mode Reproduction part Disc Measurement machine Oscilloscope VT-502 DVD Mechanism A
10、ssy Stand Stand 200mm RDV-985 Fig.1 CN101 of DVD Servo Control PWB CN11 of Connection PWB Extension Cord connections Refer to Fig.1 Extension cord No. QUQ110-3740AM General tool : Hex-head wrench(2mm) (4)Flap adjustment of the Pick-up guide shaft Confirmation after adjustment. Confirm to reproduce v
11、ideo CD and CD after the DVD test disc is adjusted and to find abnormality. (5) About keeping the disc As for the DVD test disc, plane accuracy is demanded.Please note the keeping place on the disc. ?1. Please do not put the disc directly on the work desk etc. after uses . ?2.To keep the planarity o
12、f the disc, politely handle ,and please put in a special case and keep ? the disc vertically after uses . ? Please keep keeping the disc in a cool place where direct sunshine and the air-conditioning ? wind do not drive. ?3.When the disc curves,an accurate adjustment cannot be done. Please exchange
13、for a new test disc and adjust optics. ?4 Other discs might not be able to be reproduced when adjusting on a curved disc. A AB Fig.2 Point of adjustment * Please execute the static electricity protection measures before starting the adjustment. * When the following parts are exchanged,optical adjust
14、ment Adjust the flap of the disc motor is necessary. ?1.The disc motor was exchanged. ?2.The laser pick up was exchanged. ?3.The traverse motor unit was exchanged. Note ?Additionally, please adjust the flap of the disc motor when the picture quality deterioration is ?seen .The basic adjustment thoug
15、h, is unnecessary for part exchange in the traverse. An optical adjustment in the laser pick up cannot be done. ?Please adjust the flap of the disc motor after exchanging the laser pick up. * When the traverse unit is exchanged, the adjustment is basically unnecessary. Check points for each error (1
16、) Spindle start error *Defective spindle motor Are there 10ohms resistance between each pin of CN101 2931? (The power supply is turned off and measured.) *Hall element: Is sine wave output between CN101 23 and 24, between 25 and 26, and between 27 and 28 during rotation? ? In either case, replace th
17、e mechanical unit.? ? *Defective spindle driver (IC251) Is a driving wave output from CN101 2931 ? Is IC251 9 at H level (START)? Servo IC - Is control signal sent to the motor driver ? IC201 95 : Duty is 50% during stop, but varies during rotation (greatly varies at start). - If not sent, pattern o
18、r servo IC (IC201) is defective. R259 : approx 2.5V during stop, but varies during rotation (greatly varies at start). - of not sent, pattern or servo IC (IC201) is defective.? ? Is FG input to servo IC ? Observe FG wave from IC201 89. - If not output, pattern, IC251 or IC201 is defective. During ro
19、tation (2) Disc Detection, Distinction error (no disc, no REFNV) * Laser is defective. * Front End Processor is defective (IC101). * APC circuit is defective. - Q101. * Pattern is defective. - Lines for CN101 15 and 17. ? Lines for between IC201 2 and IC101 2(LDONA), ? between IC201 3 and IC101 1 (L
20、DONB). * Servo IC is defective (IC201).? * Is signal sent to IC201(servo)71 AS2 ? * IC101 - For signal from IC101 to IC301, is signal output from IC101 88 (RFAS1) and ? IC101 69 REENV ? 50msec Approx. 500mV GND 2.5V (3) Traverse movement NG * For automatic adjustment, traverse movement occurs only w
21、hen the position is changed to retry judging the disc type after the 1st judgment resulted in an error. Therefore, traverse movement rarely occurs because, in most cases, disc judgment at the current position (1st time judgment) is executed successfully. (Of course, NG rarely occurs in this step.) N
22、ote: 1st time judgment of disc type resulted in NG. - The re-judgment of disc type may not be successful. Therefore, after removing the cause of traverse movement, re-execute automatic adjustment and confirm that no problem exists. * Check point a)?During stop ?Whether 50% duty pulse is output to R2
23、73 ?Whether between R274 and C271 is at approx. 2.5VDC ?Offset voltage between CN101 34 and 35 (scores mV if exists)? b)?When tray is opened or closed ?Check by oscilloscope whether a rectangular wave signal is output from CN101 34 or 35.? ? ? ? ? ? ? ? ? If checking a) or b) resulted in NG, IC201 m
24、aybe defective. (4) Focus ON NG * Is FE output ? - Pattern, IC101 * Is FCDRV signal sent ? (R286) - Pattern, IC301 * Is driving voltage sent ? ?CN101 20, 21 - If NG, pattern, driver, mechanical unit (with the power turned off, measure the ? resistance between CN101 20 and 21).? * Does CN101 7(SRF1)
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