DAC DGK-511-S, DGK-513-S, DGK-516-S Service manual

Service Manual

MODEL: DG-K511S

DG-K513S DG-K516S

✔ Caution :

In this Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information,please refer to PPL(Parts Price List) in Service Information Center.

Jaunary. 2006

DVD PLAYER

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CONTENTS

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

CIRCUIT OPERATIONAL DESCRIPTION.........................................................................................3

VOLTAGE CHARTS.....................................................................................................................13

CIRCUIT DIAGRAM...................................................................................................................14

PCB CIRCUIT BOARD.................................................................................................................26

WAVEFORMS............................................................................................................................36

TROUBLE SHOOTING.................................................................................................................43

INSTRUMENT DISASSEMBLY......................................................................................................48

PARTLIST...................................................................................................................................55

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Laser wavelength 650nm

Video PAL/AUTO/NTSC

Frequency response 20Hz ~ 20KHz (±1dB)

Signal/noise ratio ≥90dB

Channel separation ≥85dB ( 1KHz)

Dynamic range ≥80dB ( 1KHz)

Output

Audio

Analog

output level : 2.0 + 0/-0.2Vrms (Load impedance : 1,0KΩ)

Digital

output level : 0.5 ±0.1Vp-p (Load impedance : 75Ω)

Output

Video

Composite

output level : 1.0 ±0.1Vp-p (Load impedance : 75Ω, imbalance, negative polarity)

S-video

output level : brightness(Luma) 1.0 ±0.1Vp-p Chromaticity (Color)

0.286 ±20% (Load impedance : 75Ω)

Component Y: 1Vp-p, Pb/Pr: 0.7Vp-p (Load impedance : 75Ω)

Power 100-240V~, 50Hz~60Hz 12W

Dimensiones

Body (W x H x D) 430 x 38 x 245 mm

Packing 510 x 88 x 305 mm

Weight (Gross / Net) 2.9Kg / 2.2Kg

Notes : Design and speciﬁcations in this instruction manual are subjected to change without prior notice toimprove quality and function.

DVD Audio output standards

Output

Disc type

DVD VIDEO-CD CD

Analogue Audio output 48/96KHz sampling 44.1KHz sampling 44.1KHz sampling

Digital Audio output 48KHz sampling 44.1KHz sampling 44.1KHz sampling

SPECIFICATIONS

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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 received from the Loader, produces analog signals; and u-Com

that 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, u-Com 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.

DVD-MODULE Block Diagram

CIRCUIT OPERATIONAL DESCRIPTION

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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.

Loader Block Diagram

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CIRCUIT OPERATIONAL DESCRIPTION

1) Motor Drive IC: AT5668S

The AT5668S 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+, VOTRthrough the loading PRE FWD REV circuit.

Motor Drive IC (AT5668S) Block Diagram

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CIRCUIT OPERATIONAL DESCRIPTION

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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 Decoder : MT1389

MediaTek MT1389 is a DVD player system-on-chip (SOC) which incorporates advanced features like high quality TV encoder and state-of-art de-interlace processing. The MT1389 enables consumer electronics manufacturers to build high quality, cost-effec

tive DVD players, portable DVD players or any other home entertainment audio/video devices.

Based on MediaTek’s world-leading DVD player SOC architecture, the MT1389 is the 3rd generation of the DVD player SOC. It integrates the MediaTek 2nd generation front-end analog RF ampliﬁer and the Servo/MPEG AV decoder.

The progressive scan of the MT1389 utilized advanced motion-adaptive de-interlace algorithm to achieve the best movie/video playback. It also supports a 3:2 pull down algorithm to give the best ﬁlm effect. The 108MHz/12-bit video DAC provides users a whole new viewing experience.

DVD Player System Diagram

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CIRCUIT OPERATIONAL DESCRIPTION

MT1389 Functional Block Diagram

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CIRCUIT OPERATIONAL DESCRIPTION

2) Flash Memory : ES29LV160DB-70TG

Description

The ES29LV160 is a 16 megabit, 3.0 volt-only flashmemory device, organized as 2M x 8 bits (Bytemode) or 1M x 16 bits (Word mode) which is config-urable by BYTE#. Four boot sectors and thirty onemain sectors are provided : 16Kbytes x 1, 8Kbytesx 2, 32Kbytes x 1 and 64Kbytes x 31. The device ismanufactured with ESI’s proprietary, high performance and highly reliable 0.18um CMOS ﬂashtechnology. The device can be programmed orerased in-system with standard 3.0 Volt Vcc supply( 2.7V-3.6V) and can also be programmed in stan-dard EPROM programmers. The device offers min-imum endurance of 100,000 program/erase cyclesand more than 10 years of data retention.

The ES29LV160 offers access time as fast as 70nsor 90ns, allowing operation of highspeed microprocessors without wait states. Three separate controlpins are provided to eliminate bus contention : chipenable (CE#), write enable (WE#) and outputenable (OE#).

All program and erase operation are automaticallyand internally performed and controlled by embed-ded program/erase algorithms built in the device.The device automatically generates and times thenecessary high-voltage pulses to be applied to thecells, performs the veriﬁcation, and counts the number of sequences. Some status bits (DQ7, DQ6 andDQ5) read by data# polling or toggling betweenconsecutive read cycles provide to the users theinternal status of program/erase operation: whetherit is successfully done or still being progressed.

The ES29LV160 is completely compatible with theJEDEC standard command set of sin

gle power sup-ply Flash. Commands are written to the internalcommand register using standard write timings ofmicroprocessor and data can be read out from thecell array in the device with the same way as used inother EPROM or ﬂash devices.

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CIRCUIT OPERATIONAL DESCRIPTION

FLASH ES29LV160 Block Diagram

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CIRCUIT OPERATIONAL DESCRIPTION

3) EEPROM : AT24C16A

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 AT24C16A provides 16384 bits of serial electrically erasable and programmable read only memory (EEPROM) organized as 2048 words of 8 bits each. The device is optimized for use in many industrial and commercial applications where low power and low voltage operation are essential. The AT24C16A is available in space saving 8-lead PDIP, 8-lead JEDEC SOIC, 8-lead MAP and 8-lead TSSOP packages and is accessed via a 2-wire serial interface. In addition, the entire family is available in 2.7V (2.7V to 5.5V) and 1.8V (1.8V to 5.5V) versions.

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CIRCUIT OPERATIONAL DESCRIPTION

4) SDRAM : AW39S2016-7

Description

The AW39S2016-7s organlzed as 2-bank x 1,048,576-word x 16-bit(2Mx16), fabri

cated with high performance CMOS technology, Synchronous design allows precise cycle control with the use of system clock I/O transactions are possible on every clock cycle. Range of operating frequencies, programmable burst length and programmable latencies allow the same device to be useful for a variety of high bandwidth, high performance memory system applications.

DQ0

DQ15

UDQM LDQM

CLK

CKE

A10

CLOCK BUFFER

COMMAND

DECODER

ADDRESS

BUFFER

REFRESH

COUNTER

COLUMN

COUNTER

CONTROL

SIGNAL

GENERATOR

MODE REGISTER

COLUMN DECODER

SENSE AMPLIFIER

CELL ARRAY

BANK #2

COLUMN DECODER

SENSE AMPLIFIER

CELL ARRAY

BANK #0

COLUMN DECODER

SENSE AMPLIFIER

CELL ARRAY

BANK #3

DATA CONTROL

CIRCUIT

DQ BUFFER

COLUMN DECODER

SENSE AMPLIFIER

CELL ARRAY

BANK #1

NOTE:

The cell array configuration is 4096 * 256 * 16

R E DOC

E D WO

REDOCED WOR

REDOCED WORR

E DOCED WO

BS0 BS1

RAS

CAS

A11

SDROM AW39S2016-7 Block Diagram

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CIRCUIT OPERATIONAL DESCRIPTION

5) DAC : CS4360

Description

The CS4360 is a complete 6-channel digital-to-analog system including digital interpolation, fourth-order delta-sigma digital-to-analog conversion, digital deemphasis, volume control, channel mixing and analog ﬁltering. The advantages of this architecture include: ideal differential linearity, no distortion mechanisms due to resistor matching errors, no linearity drift over time and tempera-ture and a high tolerance to clock jitter.

The CS4360 accepts data at audio sample rates from 4kHz to 200kHz, consumes very little power and operates over a wide power supply range. These features are ideal for cost-sensitive, multi-channel audio systems including DVD players, A/V receivers, set-top boxes, digital TVs and VCRs, mini-component systems, and mixing consoles.

DAC CS4360 Block Diagram

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