Rolsen RDV-750 Service manual

Service Manual

MODEL:RDV-750

DVD/CD/M P3 PLAYER R DV-750

STAND BY/ON

VOLUME

MIN MAX

MIC

RUSS IAN OSD L ANGUA GE

PLAY PAUSE STOP PREV NEXT

OPEN/CLO SE

CONTENTS

SPECIFICATIONS.............................................................................................2

ADVANTAGES OF THIS PRODUCT......................................................................3

CIRCUIT OPERATIONAL DESCRIPTION................................................................4

VOLTAGE CHARTS.........................................................................................17

CIRCUIT DIAGRAM........................................................................................18

PCB CIRCUIT BOARD.....................................................................................28

INSTRUMENT DISASSEMBLY...........................................................................33

PARTSLIST..................... . . . . . . ...... . . . . . ...... . . . . . . ...... . . . . . . ...... . . . . . ...... . . . . . . ...... . . . 3 7

! Caution :

In this Manual, some parts can be changed for improving.

SPECIFICATIONS

Product perform number

Laser

Video

Frequency response

Signal/noise ratio

Audio distortion + noise

Channel separation

Dynamic range

Audio out

(analog audio)

Audio out

(digital audio)

Output

Video out

Q/JWC RDV-750

Wave length 650nm

PAL/AUTO/NTSC

20Hz~ 20KHz ( 1dB)

≥95dB

≤-60 dB (1KHz)

≥85dB(1KHz)

≥80dB(1KHz)

Output level: 2V Load impedance: 10KΩ

Output level: 0.5Vp-p Load impedance: 75Ω

Output level: 1Vp-p

Load impedance: 75Ω,imbalance, negative polarity

S-video out

Microphone1/2

Power supply

Power consumption

Dimensions

Gross Weight

Net Weight

DVD Audio output standards

Output

Output level: 1Vp-p

Chromaticity(C)0.286Vp-p Load impedance: 75Ω

Jack type: Ø6.35mm microphone jack

Maxi-input level: 10mv Load impedance:600ohm

AC100~240V 50Hz~60Hz

≤14W

430 x 260 x 38mm

Around 3.9kg

Around 3.1kg

DVD

Disc type

VIDEO-CD

Analogue Audio output

Digital Audio output

48/96KHz sampling

48KHz sampling 44.1KHz sampling

44.1KHz sampling 44.1KHz sampling

44.1KHz sampling

ADVANTAGES OF THIS PRODUCT

· DVD,VCD,CD,CD-R,CD-RW,MP3,PIC-CD,CD+G playback function

· Integrated remote control

· Multiplex sound playback

· Progressive scan

· Mp3 file playback function

· GUI (Graphical User Interface) OSD (On Screen Display)

By using the [DISPLAY] button on the remote control, information on the DVD/VCD/CD player and disc, can be displayed on the TV screen.

· Screensaver function (DVD)

· 3D sound (3D sound effect using 2 speakers)

· Coaxial digital output (PCM, Dolby Digital, DTS)

You can e njoy high-level digital audio by connecting with amp embedded with Dolby Digital / DTS decoder.

· Built-in Dolby Digital decoder

· Analog audio 5.1-channels output

· Composite video out (x1)

· Slow Forward / Reverse (DVD) playback

· Fast Forward / Reverse playback

· Search of title, chapter, and time in DVD disc, and search of track and time in VCD and CD

· Repeat playback (title and chapter for DVD, track and disc for VCD/CD)

· Repeat a defined period from A to B (DVD)

· Selective Play (DVD/VCD/CD)

You can select and play the desired title / chapter of DVD and track of Video CD

· Various languages OSD (On Screen Display) function (DVD)

You can select and display OSD among various languages. (English, French, Spanish)

· Parental Lock function (DVD)

This function can prevent playback of software that may be unsuitable for children.

· Multi Audio function (DVD)

The audio soundtrack can be heard in up to 8 languages. In the case of SVCD or VCD, it depends on the disc. (The number of audio languages depends on the software.)

· Multi Subtitle function (DVD)

The subtitle can be seen in up to 32 languages. In the case of SVCD or CVD, it depends on the disc. (The number of subtitle languages depends on the software.)

· Multi Angle function (DVD)

This function allows you to choose the viewing angle of scenes which were shot from a number of different angles. (The number of angles depends on the software.)

· Screen zoom function (DVD/VCD)

CIRCUIT OPERATIONAL DESCRIPTION

DVD Module

1.Summary

DVD One Board consists of: Loader part that reads and transmits audio and video data saved at Optic Discs (DVD, CD-DA, VCD, CD-R) to MPEG Decoder part; MPEG Decoder part, which, by decoding and encoding data receive d f ro m t h e Load er, produce s a n al o g sig n al s ; and u- C om tha t controls the overall system including the loader and MPEG decoder.

2.How Does it Operate

Insert the power cord and then power transmitted to each IC, and the SET will be the STANDBY status which requires the least power for input the front panel key, input the STAND BY/ON key, extinguished the LED. Once the Power On key is entered, uCom recognizes it and initiates each chipset, performs sequential algorithms such as determining whether the disc is in or not, and if in, what type of disc is loaded. Through this process, it can read disc data before transmitting it to the MPEG Decoder. The MPEG Decoder will then decode and encode such data before generating the final analog audio and video signal outputs.

CIRCUIT OPERATIONAL DESCRIPTION

3.Loader Part

The loader which read the data of audio/video from optic disc and transfer them to MPEG decoder can be divided into Deck total DVD assay(in a short term, Mecha) and Servo. Mecha mounts with the optical pick-up which allows reading the signal of a disc using laser beam and makes it operates and consists of the deck mechanism which allows loading a disc and reading the data. Servo is a sort of circuit which allows operating the loader and recovering the data and consists of Motor Drive IC operating the spindle, the sled, the loading motor.

CIRCUIT OPERATIONAL DESCRIPTION

1) Motor Drive IC: AT5868S

The AT5868S is a 5-channel BTL driver IC for driving the motors and actuators in products such as CD-ROM/DVD-ROM/DVD-Player drives. Two of the channels use current feedback to minimize the current phase shift caused by the influence of load inductance.

Driver IC generates the focus signal and the tracking signal for pick-up actuator, the sled signal for feed, spindle signal and the load signal for opening and closing of the tray. The focus signal, the tracking signal, the sled signal and the spindle signal are input into each relaxant port of the drive IC(in the order of No. 26 pin, 23, 4, and 1) and set the gain amplification and the center voltage through the internal OP-AMP and drive on both sides and then the focus signal and the tracking signal will be output as VOFC+, VOFC- and VOTK+, VOTK- on actuator, the sled signal and the spindle signal will be output as VOSL+, VOSL- and VOLD+, VOLD- on each motor. For the load signal the input opening/closing signal is output as VOTR+, VOTR- through the loading PRE FWD REV circuit.

Motor Drive IC (AT5868S) B lock Diagr am

CIRCUIT OPERATIONAL DESCRIPTION

MPEG Decoder

The signal read from DVD disc is output into the RF signal and Servo related signal through the RF IC and they are input into the MPEG decoder and processed the MPEG decoding and divided into video/audio signal. The video signal is output into the analog audio signal through the built-in encoder block and also the audio signal into the audio DAC through the audio decoder block.

MPEG decoder consists of existing MPEG-2 decoder and single chip combined the digital signal processing part which is the core technology of DVD player with the Servo controller.

1. DVD Servo And MPEG-2/MPEG-4/DIVX Decoder : ES6629

The ES6629 Vibratto™II processor is a highly integrated single-chip DVD solution that integrates read channel, ECC, Servo DSP, MCU, and MPEG-2/MPEG-4/DivX decoder that has a state-of-the-art 480p/576p progressive-scan video feature to provide brilliant and sharp, flicker-free video output to the display, and with built-in gamma correction and S/PDIF input and output support. The ES6629 performs audio/video stream data processing, TV encoding, Macrovision™ copy protection, DVD system navigation, system control, and housekeeping functions.

The Vibratto-II DVD processor is built on the ESS proprietary dual CPU Programmable Multimedia Processor(PMP) core consisting of 32-bit RISC and 64-bit DSP processors and offers the best DVD feature set. The processing units enable simultaneous parallel execution of system commands and data processing to perform specialized enconding and decoding tasks.

The RISC processor performs bit stream parsing, control audio data output, transfer video and audio data to the vector engine and service system control and housekeeping functions. The vector engine performs audio and video micro-code processing required by A/V standards, such as Dolby Digital®, MPEG and JPEG imaging. These processing tasks include video motion compensation and estimation, loop filtering, Discrete Cosine Transforms(DCT), inverse DCT, quantization, and inverse quantization.

The Vibratto-II DVD processor supports all popular pick-up units, industry standard I²S audio data input and output, EPROM and DRAM access. It also supports both lette r b ox and p a n- a nd - sc a n d is p la y s , s ub - pi c tu r e overl a y, a n d O n- S c ree n Display(OSD).

The Vibratto-II’s Unified Memory Architecture enables the lowest possible system memory cost by consolidating multiple memory subsystems into a single unit.

In addition, the Vibratto-II DVD solution offers support for Karaoke CD+G, DVDAduio, HDCD, CD-DA, Mp3, and WMA.

CIRCUIT OPERATIONAL DESCRIPTION

ES6629

ES6629 Vibratto-II system Block Diagram

ES6629 Vibratto-II Block Diagram

CIRCUIT OPERATIONAL DESCRIPTION

2. DVD Servo AFE IC : ES6603

The ES6603 is a high-performance, single-chip analog front-end (AFE) device that contains the servo functions, RF attenuator, automatic gain controller (AGC), and programmable equalizer/filter for a DVD player system, and dual auto laser power control circuit to support twin pickups or twin laser systems.

The ES6603 incorporates a bi-directional serial port for accessing the programmable functions of the internal AGC, including attenuation and boost/equalization.

The DVD servo block of the ES6603 includes mirror detection, defect detection, dual auto laser power control, focus error, center error, and tracking error detection circuits. The ES6603 provides AC-coupled voltage inputs for photo detector signals used to detect center error, focusing error, tracking error, and differential phase tracking error detection for DVD.

The ES6603 also provides an AC-coupled differential or single-ended RF signal input to the programmable attenuator with external AC coupling circuitry, and an ACcoupled single-ended input for RF signals. The attenuator outputs are AC-coupled to the AGC inputs. The AC-coupled DVD and CD inputs are multiplexed in the input stage for accurate error detection.

The programmable bandwidth and boost/equalization of the ES6603 is provided by internal 7-bit control DACs, while a variable attenuator is used to program the zero locations. The programmable bandwidth and cutoff range are set by the filter cutoff DAC. Signal equalization with theprogrammable filter is supported with a wide bandwidth fullwave rectifier and a dual rate charge pump.

The ES6603 also provides inputs for its internal RF summing mode. These inputs have the gain control amplifiers at the input stage. The gain is controlled by the register bit settings of the serial port.

The ES6603 is available in an industry-standard 64-pin low-profile quad flat pack (LQFP) package.

CIRCUIT OPERATIONAL DESCRIPTION

DVD Servo AFE IC : ES6603 Block Diagram

CIRCUIT OPERATIONAL DESCRIPTION

ES6603/ES6629 Block Diagram

CIRCUIT OPERATIONAL DESCRIPTION

3. Flash Memory : A29800UV-70(A29800TV-70/AT49F8192AT/HY29F800ABT-70)

This stores every program required for the operation of DVD player and holds the data of OSD languages and LOGO and send them upon request from u-COM. This allows the update of firmware by CD-R/RW. For DVD module.

Description

The A29800UV-70 is a 5.0 volt only Flash memory organized as 1048,576 bytes of 8 bits or 524,288 words of 16 bits each. The A29800UV-70 offers the RESET function. The 1024 Kbytes of data are further divided into nineteen sectors for flexible sector erase capability. The 8 bits of data appear on I/O0- I/O7 while the addresses are input on A1 to A18; the 16 bits of data appear on I/O0~I/O15. . The A29800UV-70 is offered in 44-pin SOP and 48-Pin TSOP packages. This device is designed to be programmed in-system with the standard system 5.0 volt VCC supply. Additional 12.0 volt VPP is not required for in-system write or erase operations. However, the A29800UV-70 can also be programmed in standard EPROM programmers.

A29800UV-70 Block Diagram

CIRCUIT OPERATIONAL DESCRIPTION

4. EEPROM : S524C20D21(HT24LC02)

This stores the information related to setup of DVD menus. This can read and write the optional information such as OSD, voice, language option after function for subtitle etc, the aspect or method of TV display, video option like display function and audio, screen saver, parental function through the I²C transmission method.

Description

The S524C20D21serial EEPROM has a 2,048-bit (256 byte) capacity, supporting the standard I²C™-bus serial interface. It is fabricated using Samsung most advanced CMOS technology. One of its major feature is a hardware-based write protection circuit for the entire memory area. Hardware-based write protection is controlled by the state of the write-protect (WP) pin. Using one-page write mode, you can load up to 16 bytes of data into the EEPROM in a single write operation. Another significant feature of the S524C20D21is its support for fast mode and standard mode.

S524C20D21 Block Diagram

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