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TK
NO. 9901E
SERVICE MANUAL
DV-P250U/(PX) DV-P250E/(UK) DV-P250A/(M)/(S)/(AU) DV-P250C
ADVICE
Please carefully read this guide before using the device. The Hitachi DVD Player has been designed to prevent fire, electrical shock, injury, or harmful radiation. It has been legally fabricated in accordance with the Electrical Appliances Act. Therefore, when using the device, please follow advice in this service guide to keep it safe to use.
1. In brief
DV-P250 is a device for DVD playback. This device is to be used by connecting it to the video input terminal of a TV set.
2. Features
6 6
Disc navigation system facilitates program search. Speedy operation by 2x speed drive.
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
DVD PLAYER July 1999 Digital Media Products Division, Tokai
PRECAUTIONS FOR SAFETY(Please follow.)
Before undertaking repair work, please read through this [Precautions for safety]. The following points should be observed in order to prevent accidents from happening and to ensure the safety of the device.
Degrees of danger or damage that can be caused by faulty operation are indicated by the following marks:
WARNING CAUTION
Under this mark, there is "Possible death or serious injury".
Under this mark, there is "Possible injury or material damage".
The following marks identify actions to be taken:
This mark indicates items to which `You should pay attention'. This mark indicates items `You have to accomplish'.
This mark indicates: `You should be cautious of electric shock'.
This mark indicates `Forbidden items'.
WARNING
You should pay attention.
Where a special attention is required, it is indicated by a label or stamp. For example, on the cabinet, chassis, or parts. Please respect the indicated items and the `Precautions for use' of the manual.
The original part installation and wiring route shall be restored.
For safety, some parts are insulated by a tube or a tape, or installed without contact with substrate. The internal wiring is kept a distance from hot or high voltage parts by clamps or routing. Please restore them as initially done to prevent electric shock or fire from happening.
You should be cautious against electric shock.
Please be careful during operations because there are high voltage and recharging parts inside. An electric shock or death may happen by touching them. When disassembling, assembling, or replacing a part, the power plug has to be pulled off. Touching by error a powered part may cause an electric shock, death, or injury.
Please check safety after servicing.
Please check if dismounted screws, parts, and wires are reinstalled as before and if the area surrounding the repair is damaged. Please also measure insulation resistance with a ohmmeter and to confirm that it is more than 20M. There is risk of electric shock or fire if the insulation resistance is less than 20M.
Please use designated parts.
Parts are characterized by uninflammability and voltage resistance. Therefore, parts having these same characteristics must be used in replacement. Especially for parts important in insuring safety, identified by in the schematic or parts list, a part with the identical part number shall be used. If a part with a different part number is used, an electric shock or a fire may occur.
II
Table Of Contents
Chapter 1 System Introduction
System Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Hitachi DV-P250E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Hitachi DV-P250U/DV-P250A/DV-P250C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 ACER DVD-5500/DVD-5300 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 ACER DVD-5100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 System Outlook . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Description of adopted new technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Digital signal circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Video circuit (DEC substrate). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 VIDEO OUTPUT CIRCUIT (RJK substrate) . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 AUDIO CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 KARAOKE CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 FRONT (FSW) SUBSTRATE CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 POWER SUPPLY CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 CLOCK CIRCUITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 VIDEO CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 AUDIO CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 KARAOKE CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 About System Reset Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 System Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Chapter 2
Removal and Replacement
Prelimaries before disassembling machines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 Disassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 Removing the Top Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 Removing the FootStand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 Removing the Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 Removing the MPEG Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 Removing the Power Supply Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 Removing the DVD-ROM Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 Removing the Outlet Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33 Removing the Front Panel Control Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 Connector Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Appendix A
Schematics
DEC Board (A side) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37 DEC Board (B side) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38 RJK Board (A side) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39 RJK Board (B side) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40 FSW/MVR/FJK Board (A side) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41 FSW/MVR/FJK Board (B side) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42 System Block Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43 Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44 Replacement Parts List (DV-P250) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
III
Chapter 1
System Introduction
System Specification
Hitachi DV-P250E
Specification General Model .................................................................................................................... DV-P250E Operating laser ......... Semi-conductor laser : Wave length 650nm(DVD) / 780nm(CD,VCD) Power supply ................................................................................................. AC230V, 50Hz Power consumption ........................................................................................................27W Weight ..........................................................................................................................3.9 Kg Overall size ...........................................................................434 (W) x 315 (D) x 98 (H) mm Allowable operating temperature ..................................................................... +5°C~+35°C Allowable operating humidity ...................................................... 15~75% (no condensation) AV connector output terminal S Video output terminal AV connector output.................................................................................... 21-pin connector This connector provides the video and signals for connection to a color video TV monitor (or TV set) which has an `AV CONNECTOR' terminal. Y output level .......................................................................................... ........... 1Vp-p (75) C output level ................................................................................. NTSC : 0.286Vp-p (75) ...............................................................................................................PAL : 0.3Vp-p (75) Output terminal ......................................................................................................S terminal Video output Audio output Output level ........................................................ 1 Vp-p (synchronous when loaded at 75) Output terminal ..........................................................................................................pin jack Output level .................................................................................... 200mVrms (1KHz, -20dB) Analog audio output ........................................................................... 2 system (pin jack x 4) Sound characteristics : Frequency characteristics ............................................................CD : 4Hz~20KHz (EIAJ) .................................................................................... DVD : 4Hz~22KHz (48K sampling) ...............................................................................................4Hz~44KHz (96K sampling) SN ratio ...................................................................................................................110 dB Dynamic range .........................................................................................................100dB Total harmonic distortion rate .................................................................................0.003% Wow fluttertics .............................Measurement limit less than (±0.001% W.PEAK)(EIAJ) Other terminals Accessories Digital audio output optical/coaxial.......................................................... Coaxial terminal : 1 (DTS/AC-3/MPEG2, AC3, LPCM, OFF commutable) ....................... Optical connector : 1 Remote control unit .............................................................................................................. 1 Single `AAA' battery.............................................................................................................. 2 AV cord................................................................................................................................. 1 Power cord ........................................................................................................................... 1
Chapter 1
1
Hitachi DV-P250U/DV-P250A/DV-P250C
Specification General Model ................................................................................DV-P250U/DV-P250A/DV-P250C Operating laser ......... Semi-conductor laser : Wave length 650nm(DVD) / 780nm(CD,VCD) Power supply ............................................................................. DV-P250U : AC120V, 60Hz ........................................ DV-P250U (PX), DV-P250A, DV-P250C : AC110-240V, 50/60 Hz Power consumption ........................................................................................................27W Weight ..........................................................................................................................3.9 Kg Overall size ...........................................................................434 (W) x 315 (D) x 98 (H) mm Allowable operating temperature ..................................................................... +5°C~+35°C Allowable operating humidity ...................................................... 15~75% (no condensation) Component output terminal Y output level .................................................................................................... 1 Vp-p (75) PB output level .................................................................................. NTSC : 0.7 Vp-p (75) ..........................................................................................................PAL : 0.698 Vp-p (75) PR output level .................................................................................. NTSC : 0.7 Vp-p (75) ..........................................................................................................PAL : 0.698 Vp-p (75) Output terminal ..........................................................................................................pin jack S Video output terminal Y output level ..................................................................................................... 1Vp-p (75) C output level ................................................................................. NTSC : 0.286Vp-p (75) ...............................................................................................................PAL : 0.3Vp-p (75) Output terminal ......................................................................................................S terminal Video output Audio output Output level........................................................ 1 Vp-p (synchronous when loaded at 75) output terminal ...........................................................................................................pin jack Output level.................................................................................... 200mVrms (1KHz, -20dB) Mixed 2ch output................................................................................ 1 system (pin jack x 2) 5.1ch output ....................................................................................... 1 system (pin jack x 6) Sound characteristics : Frequency characteristics ............................................................CD : 4Hz~20KHz (EIAJ) .................................................................................... DVD : 4Hz~22KHz (48K sampling) ...............................................................................................4Hz~44KHz (96K sampling) SN ratio ...................................................................................................................110 dB Dynamic range .........................................................................................................100dB Total harmonic distortion rate .................................................................................0.003% Wow/flutter .................................Measurement limit less than (±0.001% W.PEAK)(EIAJ) Other terminals Accessories Digital audio output optical/coaxial.......................................................... Coaxial terminal : 1 (DTS/AC-3/MPEG2, LPCM, OFF commutable) ................................ Optical connector : 1 Remote control unit.............................................................................................................. 1 Single `AAA' battery.............................................................................................................. 2 AV cord................................................................................................................................. 1 Power cord ........................................................................................................................... 1 AC socket (DV-P250U (PX) only) ........................................................................................ 1
2
Chapter 1
ACER DVD-5500/DVD-5300
Specification General Model .................................................................................................. DVD-5500/DVD-5300 Operating laser ......... Semi-conductor laser : Wave length 650nm(DVD) / 780nm(CD,VCD) Power supply .......................................................Taiwan : DVD-5500/5300 : AC120V, 60Hz .........................................................Hong Kong : DVD-5500/5300 : AC110-240V, 50/60 Hz Power consumption ........................................................................................................27W Weight ..........................................................................................................................3.9 Kg Overall size ...........................................................................434 (W) x 315 (D) x 98 (H) mm Allowable operating temperature ..................................................................... +5°C~+35°C Allowable operating humidity ...................................................... 15~75% (no condensation) Component output terminal (DVD-5500 only) Y output level .................................................................................................... 1 Vp-p (75) PB output level .................................................................................. NTSC : 0.7 Vp-p (75) ..........................................................................................................PAL : 0.698 Vp-p (75) PR output level .................................................................................. NTSC : 0.7 Vp-p (75) ..........................................................................................................PAL : 0.698 Vp-p (75) Output terminal ..........................................................................................................pin jack S2 Video output terminal Y output level ..................................................................................................... 1Vp-p (75) C output level ................................................................................. NTSC : 0.286Vp-p (75) ...............................................................................................................PAL : 0.3Vp-p (75) Output terminal ......................................................................................................S terminal (DVD-5500 S terminal x 2) Video output Output level ........................................................ 1 Vp-p (synchronous when loaded at 75) output terminal ...........................................................................................................pin jack (DVD-5500 pin jack x 2) Audio output Output level .................................................................................... 200mVrms (1KHz, -20dB) Mixed 2ch output................................................................................ 1 system (pin jack x 2) 5.1ch output ....................................................................................... 1 system (pin jack x 6) Sound characteristics : Frequency characteristics ............................................................CD : 4Hz~20KHz (EIAJ) .................................................................................... DVD : 4Hz~22KHz (48K sampling) ...............................................................................................4Hz~44KHz (96K sampling) SN ratio ...................................................................................................................110 dB Dynamic range .........................................................................................................100dB Total harmonic distortion rate .................................................................................0.003% Wow/flutter ...................................Measurement limit less than (±0.001% W.PEAK)(EIAJ) Other terminals Accessories Digital audio output optical/coaxial.......................................................... Coaxial terminal : 1 (DTS/AC-3/MPEG2, LPCM, OFF commutable) ................................ Optical connector : 1 Remote control unit .............................................................................................................. 1 Single `AAA' battery.............................................................................................................. 2 AV cord................................................................................................................................. 1 Power cord ........................................................................................................................... 1
Chapter 1
3
ACER DVD-5100
Specification General Model .................................................................................................................... DVD-5100 Operating laser ......... Semi-conductor laser : Wave length 650nm(DVD) / 780nm(CD,VCD) Power supply ................................................................................................. AC120V, 60Hz Power consumption ........................................................................................................27W Weight ..........................................................................................................................3.9 Kg Overall size ...........................................................................434 (W) x 315 (D) x 98 (H) mm Allowable operating temperature ..................................................................... +5°C~+35°C Allowable operating humidity ...................................................... 15~75% (no condensation) S Video output terminal Y output level .......................................................................................... ........... 1Vp-p (75) C output level ................................................................................. NTSC : 0.286Vp-p (75) ...............................................................................................................PAL : 0.3Vp-p (75) Output terminal ......................................................................................................S terminal Video output Audio output Output level ........................................................ 1 Vp-p (synchronous when loaded at 75) output terminal ...........................................................................................................pin jack Output level .................................................................................... 200mVrms (1KHz, -20dB) Analog audio output ........................................................................... 2 system (pin jack x 4) Sound characteristics : Frequency characteristics ............................................................CD : 4Hz~20KHz (EIAJ) .................................................................................... DVD : 4Hz~22KHz (48K sampling) ...............................................................................................4Hz~44KHz (96K sampling) SN ratio ...................................................................................................................110 dB Dynamic range .........................................................................................................100dB Total harmonic distortion rate .................................................................................0.003% Wow fluttertics .............................Measurement limit less than (±0.001% W.PEAK)(EIAJ) Other terminals Accessories Digital audio output optical/coaxial.......................................................... Coaxial terminal : 1 (DTS/AC-3/MPEG2, LPCM, OFF commutable) Remote control unit .............................................................................................................. 1 Single `AAA' battery.............................................................................................................. 2 AV cord................................................................................................................................. 1 Power cord ........................................................................................................................... 1
4
Chapter 1
System Outlook
Front Panel
NOTE: The Karaoke functions (includes MIC1 VOL/MIC2 VOL/MIC1 input jack/MIC2 input jack) are only available at Acer DVD-5500 and DVD-5300 models. NOTE: The Jog dial and Shuttle ring functions are only available at Acer DVD-5500 and Hitachi DV-P250 models.
Display Window
Chapter 1
5
Rear Panel
ACER DVD-5500
ACER DVD-5300
6
Chapter 1
Acer DVD-5100
Hitachi DV-P250E
Chapter 1
7
Hitachi DV-P250U/DV-P250A/DV-P250C
NOTE: For the different voltages of each area, the power connector has the following two types. The Power Connector type 2 is only for the areas of Taiwan and U.S.A. model. And the power connector type 1 is for the DV-P250U(PX) and others. Power Connector type 1 Power Connector type 2
8
Chapter 1
Description of adopted new technology
Digital signal circuit
Data Flow
The following figure shows the block diagram of digital signal circuit.
DVD ROM DRIVE
PG1101
20 MHz X'TAL X1601
SH MICOM IC1601
TRACK BUFFER 4Mbit IC1603
FLASH MEMORY 8Mbit IC1602
I/F GATE ARRAY IC1101
SH BUS
A/V DECODER IC1201
BUFFER RAM 16Mbit x 2 SDRAM IC2203~IC2204
To Audio DAC
27 MHz X'TAL X2203
To VIDEO ENCODER
The disc data will be read by DVD ROM Drive then pass through I/F gate array (IC1101). The read data will then be stored in the track buffer by SH MICOM(IC1601). Then the stored data will be read out from the track buffer in response to the demand by A/V decoder (IC1201) and input in A/V decoder through I/F gate array. Finally, the A/V decoder will demodulate/decode the data according to their contents and output audio data to Audio DAC (IC1501~1504), and video data to Video encoder (IC2202)
Reference Clock of each IC
IC IC1101 I/F GATE ARRAY IC1601 SH MICOM IC1602 FLASH MEMORY IC1603 TRACK BUFFER IC1201A/V DECODER Reference Clock 20MHz clock generated by SH MICOM System clock of X1601 20MHz X'TAL, SH Nil (Control signal is generated by SH MICOM) Nil (Control signal is generated by SH MICOM) System clock and video interface clock are input from X2203 27MHz X'TAL. Audio interface clock is output from 169 pin named DA-XCK.
Chapter 1
9
Functions of each IC
Operating Voltage 5V 5V 5V 5V 3.3V 3.3V
No. 1 2 3 4 5 6
IC IC1101 I/F GATE ARRAY IC1601 SH MICOM IC1602 FLASH MEMORY IC1603 TRACK BUFFER IC1201 A/V DECODER IC2203~IC2204 BUFFER RAM
Functions Execute data transfer timings from ATAPI to track buffer, and from track buffer to A/V decoder. Execute data transfer, presetting and control of each IC. Store memory for SH MICOM software Buffer memory for data transfer Execute decompression (decoding) of data compressed by MPEG Memory used for decompression (decoding) of data compressed by MPEG and controlled by A/V decoder
The following is the description of the functions of each IC: 1. I/F GATE ARRAY (IC1101) It executes signal timing changes between SH MICOM (IC1601), DVD ROM drive I/F (PG1101), and A/V decoder (IC1201). It operates on 20MHz clock which is an output from SH MICOM. SH MICOM (IC1601) It transfers data and executes presetting and control of each IC. Data transfer from DVD ROM drive I/F is done by setting a register of I/F gate array and by intermediary of I/F gate array. In addition, it controls audio DAC ((IC1501~IC1504) and video encoder (IC2202), manages track buffer (IC1603) and flash memory (IC1602), and communicates with FL MICOM (IC1701). With 20MHz XTAL(X1601) attached it pulses and is used as a system clock. FLASH MEMORY (IC1602) A 8Mbits flash memory is used. It stores SH MICOM program and its access is controlled by SH MICOM. TRACK BUFFER (IC1603) A 4Mbit DRAM is used. It stores data read out from disc. Its control is done by SH MICOM, and its data is read-written via I/F gate array. In addition a part of this buffer is used as the work area of SH MICOM. A/V DECODER (IC1201) Data input from track buffer via I/F gate array is separated into audio data and video data. MPEG compressed data are decompressed (decoded) and output as digital video and digital audio (AC-3). SH MICOM controls it via I/F gate array. System clock, clock of video interface signals, and clock of audio interface signals operate by inputting 27MHz respectively. BUFFER SDRAM (IC2203~IC2204) Two 16 Mbits SDRAM are used. A/V decoder controls it and it is used to decompress audio and video data compressed by MPEG.
2.
3. 4.
5.
6.
Video circuit (DEC substrate)
8bit YCRCB digital video stream (P) output from A/V decoder are input to video encoder ADV7172(IC2202). Video encoder is preset in master mode that generates reference signals and receives 27MHz from system clock X2203 and outputs H,V synchronous signals to A/V decoder.
By presetting of internal register, video encoder generates: 1. 2. NTSC (North America, Japan, Taiwan) PAL (Europe, Asia)
standard analog video signals.
10
Chapter 1
Filter circuit eliminates high frequency components of analog video signals output from video encoder. Afterwards in S2 processor circuit DC voltage is superposed on C signals then output 3 types of video signals: composite video signals, Y/C(S2) video signals and YPBPR/RGB to RJK substrate via 17P connector (PG2201).
The following is a description of video circuit along signal flow:
Block Diagram of VIDEO ENCODER B1865A (IC2202) interior
RESET (44)
SDA/SDL (21,20) I2 C B U S
VOLTAGE REFERENCE (22/23/36/37/38)
I2 C INTERFACE
ENCODER SECTOR MULTIPLEXER SECTOR
DEMULTIPLEXER CLOSED CAPTION
CONVERTER SECTOR Y
SYNC ADDER
CGMS
P (2~9)
UPSAMPLE
Y (33)
MACROVISION DAC
CONVERTER
C B /C R
BURST ADDER
C (29) CVBS (35) Y/G (28) PB /B (25) P R /R (24)
CHROMA ENCODER
Y/C MIX
D/A CONVERTER SECTOR
CLK (48)
BLANK (16)
H/V SYNC OUT (14/15)
VIDEO ENCODER ADV7172 (IC2202)
1. MULTIPLEXER SECTOR It transforms input digital video stream (Input at 2~9 pins) in 8bit parallel data then separates them in Y data and CB/C R data and changes simultaneously the rate (6.75MB/S->13.5MB/S). CONVERTER SECTOR It generates various internal timing signals with the synchronous signal as standard by adding synchronous signals generated in IC to Y data, according to the conditions set in the internal register or by adding BURST signals to CB/CR data. At the same time it outputs these synchronous signals to A/V decoder (Output at 14,15 pins). In addition, when power is turned ON, RESET signal (Input of L level at 44 pin) is input to reset the register in IC. Moreover, writing in the internal register (presetting) is done via I2C BUS ( 20,21 pins). ENCODER SECTOR The following 1~3 data are inserted in VIDEO DATA according to preset conditions in the internal register: a. b. c. Closed caption NTSC Mode: 21 lines and 284 lines/ PAL Mode: 22 lines and 335 ines. CGMS (Copy Guard Management System) 20 lines and 280 lines of NTSC. Macrovision Copy Prevention System Finally it generates DIGITAL INTENSITY DATA, DIGITAL CHROMA DATA, and DIGITAL COMPOSITE DATA.
2.
3.
Chapter 1
11
4.
D/A CONVERTER (DAC)SECTOR Constituted of 10bit DAC, it transforms DIGITAL VIDEO DATA to ANALOG VIDEO DATA for output. Under control of output voltage by DAC pins (22, 23, 36, 37, 38 pins), it output 3 kinds of ANALOG VIDEO SIGNALS: a. b. c. d. ANALOG COMPOSITE VIDEO SIGNALS (CVBS/35 pin), output voltage 1.0Vpp. ANALOG INTENSITY SIGNALS (Y/33 pin), output voltage 1.0Vpp. ANALOG CHROMA SIGNALS (C/29 pin), BURST part output voltage 286mVpp. ANALOG COMPONENT YPBPR/RGB.
S2 Processing Circuit (only for Japan)
S2 is a standard used in wide television sets possessing screen size switching function in NTSC mode. By inputting VIDEO signals formed by superposing DC voltage on C signal at S input terminal, it switches automatically to TV display size. The DC voltage superposed on C signal varies according to the ASPECT RATIO of VIDEO SIGNALS. 1. Case of SQUEEZE SIGNAL (*1) H-level voltage is input in SQUEEZE INPUT; Q2202 and Q2201 are powered and +4V DC voltage is superposed on C signal output line. 2. Case of LETTER BOX SIGNAL (*2) H-level voltage is input in LETTER INPUT; Q2205, Q2204, and Q2203 are powered and +1.8V DC voltage is superposed on C signal output line.
1.
*1: It is a laterally shrunk image information with 525 lines and an aspect ratio of 16:9 carried by the standard TV signal format of 525 lines and an aspect ratio of 4:3. When viewing on a 4:3 TV set, the image appears vertically oblong. *2: It is a wide screen signal in the standard TV signal format of 525 lines and an aspect ratio of 4:3 with coexistence of upper and lower blank areas of 525 lines and an aspect ratio of 4:3 screen and the principal image area of 4:3 aspect ratio (line 53~232/316~495). When viewing on a 4:3 TV set, one sees black areas at the top and bottom of the screen.
2.
12
Chapter 1
VIDEO OUTPUT CIRCUIT (RJK substrate)
Analog composite video signals (CVBS), analog intensity signals (Y), analog chroma signals (C) and analog component signals (YPBPR/RGB) are sent from DEC substrate to RJK substrate by passing through 17P connector (PG2201~CN1302). From RJK substrate, CVBS signals are output from output terminal J1307 and Y/C signals are output from output terminal J1302. Component signals are output from output terminal J1306 (YPBPR) or J1361 (RGB).
DEC Substrate PG2201
RJK Substrate PG1302 J1307
VIDEO
J1302
S
J1361 J1306
COMPONENT SCART
AUDIO CIRCUIT
Audio circuit is shown in page 15. Audio circuit is composed of D/A converter sector (DEC substrate) that transforms digital audio signals output from A/V decoder (IC1201), analog processing sector (RJK substrate) that consists of an operational amplifier, and mute circuit (DEC substrate, RJK substrate) for stopping audio output when required. 1. D/A CONVERTER SECTOR (DEC substrate) D/A converter sector is composed of IC1502 that receives and transforms digital audio signals from A/V decoder in analog signals. IC1502 is a converter corresponding to FL and FR signals of sampling frequencies 44.1/48/96KHz and data lengths16/20/24bit, and digital audio signals from A/V decoder is input at pin 2. To these digital audio signals are inserted FL and FR signals in time sharing mode. When they are input in pin 1, they are separated in FL and FR signals by R clock and after transformation analog FL signals are output at pin 16 and FR signals at pin 13. Moreover, when there are no input signals at pin 2, a signal called ZERO MUTE is output to pin 21 to mute useless noises (See paragraph on MUTE CIRCUIT.) Every functions of IC1502 is preset by MICOM and controlling signals from SH MICOM are input at pins 26, 27,and 28. As for presetting items, there are data length, sampling frequency, signal polarity, and deemphasis. ANALOG PROCESSING SECTOR (RJK substrate) Analog processing sector is composed of operational amplifier IC1508 that is a filter and operational amplifier IC1510 that amplifies audio signals. Filter portion is composed of RC low pass filter and IC1508 formed active low pass filter and there are 3 sections. The diagram below shows its filter portion circuit (for FL signals only).
2.
Chapter 1
13
C1561
R1527
R1529
R1531
3
C1567 C1571
IC1508 C1559 C1563
Filter 1
Filter 2
+
This 3-section filter constitutes a low pass filter of overall cutoff frequency of 44KHz. Audio signals after low pass filter is amplified by IC1510 by about 6dB and output to audio out1 and audio out2. Here, among audio signals, FL signals are input at pin 3 of IC1508 and output from pin 1, then input to pin 2 of IC1510 then output from pin 1. FR signals are input at pin 5 of IC1508 and output from pin 7, then input to pin 6 of IC1510 then output from pin 7. 3. MUTE CIRCUIT (DEC substrate, RJK substrate) The principal role of mute circuit is the erasing of useless noises occurring when power is turned on. Mute signal for noise erasing is generated by SH MICOM, reverse-amplified by Q1505 and Q1506. Then by putting Q1310 and Q1311 'ON', it mutes audio signals. In addition, if IC1502 detects no-signal, it generate a mute signal called ZERO MUTE. This latter is reverse-amplified by Q1507 and mutes useless audio signals by putting Q1310 and Q1311 'ON'.
14
+
2
R1533
1
Filter 3
Chapter 1
AUDIO CIRCUIT
IC1509A IC1507A
LR CLOCK
1
DIGITAL AUDIO SIGNAL
2
FILTER
AMP
DIN
LRCIN
+
VOUTL VOUTR ZERO
IC1501
13
D/A CONVERTER +5V_STBY
MD MC ML
FILTER +5VAU
+ 5 + 6 IC1507B 7 + 5 6 D3301 1 3 + -
26 27 28
2
1 Q1506 3
21
FROM SH u-COM
1 Q1505 3
FROM SH u-COM
2 1 Q1501 3 DTA124EKA
A MUTE
-8V -8V LR CLOCK
1
A MUTE 2 FILTER
IC1508A IC1510A
AMP
DIGITAL AUDIO SIGNAL
2 2 + 16 13 3 2 1 3
+
LRCIN
DIN
+
VOUTL VOUTR ZERO
+
IC1502
D/A CONVERTER
MD MC ML
FILTER +5VAU
+ IC1508B 5 + 6 7 +
AMP
IC1510B 5 + 6 D1302 1 3 7 + Q1311
26 27 28
FROM SH u-COM
2 1 Q1507 3 DTA124EKA
-8V
IC1511A
21
A MUTE 2 DIGITAL AUDIO SIGNAL
2
IC1512A
LR CLOCK
1
FILTER
DIN
LRCIN
+
VOUTL VOUTR ZERO
IC1503
13
D/A CONVERTER
MD MC ML
FILTER +5VAU
+ 5 6 IC1511B + 7 + 5 + 6 D1303 1 3
26 27 28
21
FROM SH u-COM
2 1 Q1508 3 DTA124EKA
-8V FILTER
IC1513A
A MUTE 2
IC1514A
AMP
LR CLOCK
1
DIGITAL AUDIO SIGNAL
2 2 + 16 13 3 2 1 3
+
LRCIN
DIN
+
VOUTL VOUTR ZERO
+
IC1504
D/A CONVERTER
MD MC ML
FILTER +5VAU
+ 5 IC1513B + 7 + 5 6 D1304 1 3 + -
IC1514B 7 +
26 27 28
21
FROM SH u-COM
2 1 Q1509 3 DTA124EKA
6 -
-8V
A MUTE 2
4.
5.1CH Difference List
Output Downmix L/R Front L/R Surround L/R Center/Woofer IC 1501 IC 1502 IC 1503 IC 1504
D/A Converter
IC 1507, IC 1509 IC 1508, IC 1510 IC 1511, IC 1512 IC 1513, IC 1514
Chapter 1
+
+
+
16
3
+
IC1512B 7
+
-
2
1
3
+
-
2
AMP
Q1307
+
+
16
3
+
IC1509B 7
+ Q3503
+
2
1
3
+
-
2
1
AUDIO MUTE
DOWNMIX-Lch DOWNMIX-Rch
AMP
Q3504
1
AUDIO MUTE
Q1310
FRONT-Lch FRONT-Rch
AMP
1
AUDIO MUTE
Q1306
SURROUND-Lch SURROUND-Rch
1
AUDIO MUTE
Q1308
CENTER WOOFER
AMP
Q1309
Operational amplifier
15
KARAOKE CIRCUIT
(Only available at DVD-5500/DVD-5300 models)
When mic is connected to the mic input terminal, "KARAOKE" will be lighted on FL tube and mode will be changed to Karaoke mode. Therefore, karaoke functions of keycon and vocal cancel may be used. When mic is disconnected, karaoke mode is `OFF'. Signals output from MIC1 are input to IC2401 at pin 5, then pass through MIC amplifier, and output to MIC volume RV1762 from pin 7. Afterwards it will be input again to IC2404 at pin 8, then pass through IC2404 internal signal analog/digital converter and output to IC1201 pin 171 from IC2404 pin 1. Similarly signals output from MIC2 are input to IC2401 pin 3, then pass through MIC amplifier and output from pin 1 to MIC volume RV1763. Then input again to IC2404 pin 5, then pass through IC2404 internal signal analog/digital converter and output to IC1201 pin 171 from IC2404 pin 1,then to MIC1/MIC2 serial data(through IC1201 internal echo/MIC G.ETC signal process) and disc audio L/R signal (through path shift/vocal partnering/audio G.edc signal process) mix,serial signal output to audio common circuit IC1501 pin 2 and IC1502 pin 2 from IC1201 pin 161 and IC1201 pin 163.
EXPLAINATION: 1. MCLK(IC2404 4 pin): external clock input, from IC1201 pin 169 through buffer IC1505 to IC2404 pin 4. DVD:384*fs=384*48k=18.432MHz CD/VCD:384*fs=384*44.1k=16.934MHz SCLK(IC2404 2 pin): MIC audio bit clock, from IC1201 pin 173 to IC2404 pin 2. DVD:18.432/8=2.304MHz CD/VCD:16.934/8=2.1168MHz LRCK(IC2404 3 pin): MIC1 and MIC2 L/Rclock, from IC1201 pin 172 to IC2404 pin 3. DVD:48KHz CD/VCD:44.1KHz
2.
3.
16
Chapter 1
Chapter 1
KARAOKE CIRCUIT
IC1505
4 3 2 1
IC1201 SCLK MCLK LRCK
172 173 169
IC2401 4 2 3 S DATA 1
171
MIC1 MIC2
REVERB/ MIC ECHO
MIXER MIC Sum Simulated TREVEL STEREO G and Clip TO
MIC1 Serial output interface + 8 S/H DAC + 5 S/H DAC IC2404 LPF DDF HPF LPF DDF HPF
5
RV1762
7
AudioL
MIC2 3
1
PITCH VOCAL Audio Simulated SHIFT AudioR KEY Co Partnering STEREO G
Audio Common Circuit D/A IC1501
RV1763
17
FRONT (FSW) SUBSTRATE CIRCUIT
1. FL MICOM (IC1701) It performs communications with SH MICOM ( pins 6, 7, 10 ~ 13, 15, 25 ), including the main frame key and remote control operation, FL tube (IC1702) drive, and lighting of power indicator. In addition, it works also in standby mode. When power is 'ON', it outputs control signal at pin 33 to start all power sources and voltages and unlock short circuit toward GND of SH MICOM reset IC (IC1605) output. INCLUSION OF MAIN FRAME KEY AND REMOTE CONTROL OPERATION Input is done to FL MICOM at pins 2~4 for operation of S1701 ~ S1715 and S1761 ~ S1763 of mainframe key. Input is done to FL MICOM at pins 23, 24, 37~40 for jog shuttle sw (S1718) operation. Remote control signal is received by ultra-red receiver element (IC1703), output at pin 1 and input to FL MICOM at pin 26. FL TUBE DRIVE Grid voltage of FL TUBE at pins 33~38 is controlled from FL MICOM at pins 41~46; anode voltage of FL TUBE at pins 5~23 from FL MICOM pins 51~69. Among which FL MICOM pins 65~69 are connected to a 20V by R1743~R1747 because no pull down resistance is built-in in IC. Filament voltage (AC4.2V) is supplied from power source to FL TUBE at pins 1, 2, 41, and 42. POWER INDICATOR Control signal output from FL MICOM pins 34 and 35 then puts LED driving transistors Q1703 and Q1704 'ON' or 'OFF' then lights 2-color LED (LED1761) green or red. When power is 'ON', Q1704 is 'ON' and the green LED lights up; when standby, Q1703 is 'ON' and the red LED lights up.
2.
3.
4.
POWER SUPPLY CIRCUIT
1. ESSENTIAL OF POWER SUPPLY CIRCUIT OPERATION Power supply is RCC switching type. Energy is stored in transformer T1, when FETQ1 is 'ON', by AC100V impressed at AC inlet. After that, when FETQ1 turns 'OFF', the energy is released to the secondary side power supply. To diverse circuits from secondary side includes SW (S5V, S3.3V, S12V) that are put 'ON' by FL MICOM control signal (P. ON/OFF) of PG1901 pin 1 and permanently 'ON' supplies (A5V, MUTE A5V, AC4.2V, A-20V, A8V, A-8V). Detection of secondary side voltage is by A5V. D8, C16, and C17 compose its secondary side commutating circuit. It is fed back by photo-coupler PHC1 to primary side and maintains stable output voltage and is supplied to FL MICOM and ultra-red reception element. MUTE A5V is for AUDIO MUTE and supplied from A5V output. S5V output is from A5V output and by intermediary of output control circuit Q3. S3.3V is output from S5V at 3-terminal regulator IC2. D11 and C24 compose secondary commutating circuit of S12 that is output by 3-terminal regulator IC3 and is for DVD-ROM drive use. D11 and C24 compose secondary commutating circuits of A8V that is output by 3-terminal regulator IC4. For audio circuit proper +5V power supply, AUD S5V is produced from A8V in 5V regulator IC1506 (in DEC substrate). D13 and C29 compose secondary commutating circuit of A-8V and it output -8V by transistor Q7 and zener diode D20. A-20V is negative power supply to FL tube. D14 and C33 compose its secondary commutating circuit and output -20V by transistor Q6 and zener diode D17. AC4.2V is for FL tube heater. To prevent fluctuation of output voltage due to that of power source, a selfexciting push-pull circuit is used. It is input from A5V, passes DC/AC inverter composed of transistors Q8, Q9 and transformer T2 and output. It supplies stable voltage without being disturbed by power source fluctuations. It plays an important role in FL tube life maintenance and against brightness decrease.
2.
OPERATION OF PROTECTION CIRCUIT Protection circuits are different according to different power supplies. For A5V and S5V,when load current increases and exceeds the control limit of the primary side of the regulator, the over current protection circuit of the primary side operates and regulator output will decrease suddenly. At the same time other outputs stop. For S12V, S3.3V, and A8V, when load current increases and exceeds the control limit of 3-terminal regulator, the internal over current protection circuit operates and output will suddenly decrease.
18
Chapter 1
Pulling the plug from the wall socket eliminates a short circuit and plugging in again restores the normal state. When A-8V or A-20V output is short circuited, fuse F2 will open to protect circuit. When AC4.2V output is short circuited, fuse F3 will open to protect the circuit. When this and A5V are short circuited, fuse resistance R26 and R27 will open to protect the circuit. For over current protection for A5V, destruction of zener diode by short will stop the output. The circuit is protected in this way. By pulling off plug from wall socket, eliminating short circuit, replace destroyed parts, and plug in again, the normal state will be restored in its secondary commutate.
CLOCK CIRCUITS
27MHz X'TAL (X2203)
Block diagram for 27 MHz clock circuit is shown in Fig. 5-8-1. When power is supplied to 27 MHz X'TAL, it generates 27MHz clock and input it to A/V decoder (IC1201), video encoder (IC2202). 1. A/V DECODER The A/V decoder is used as CLOCK VCK (input at pins 177 and 178) of video interface signal and output digital video stream synchronized to VCK from 8bit video data bus VDATA[7:0] (output at pins 142, 143, 145, 148, 150, 152, 154, 155 ) VIDEO ENCODER At video encoder it is used as system clock CLK (input at pin 48) and output horizontal synchronous HSYNC (output at pin 14 ) and vertical synchronous VSYNC (output at pin 15) to A/V decoder. Audio DA Converter The audio external frequency clock signal DA-XCK is used as system clock. DA-XCK is supplied from A/V decoder (output at pin 129 ), through IC1505 ( input at pin 1 and output at pin 4 ), then pass to Audio DAC (input at IC1501~IC1504 pin 5). IC1201: The DA-XCK is used to generates Audio bit clock DA-BCK (output at pin 167) and LR clock DALRCK (output at pin 166).
2.
3.
DA-XCK DA-BCK DA-LRCK
Is interior clock used for generating DA-BCK and DA-LRCK. DA-XCK takes frequency 384 times the sampling frequency. Is Audio bit clock obtained by dividing DA-XCK in 8 equal parts. It takes frequency 48 times that of sampling. Is clock that identifies channel (Lch or Rch) against all Audio sampling.
* The Audio Interface Unit inside A/V decoder corresponds to sampling frequencies (fs) 44.1kHz (CD-DA, Video-CD), 48kHz, 96kHz (DVD). The frequency of DA-BCK is defined by Formula 1: f DA-BCK = Audio data bit length * 2 * fs ...................................................................................................1 At A/V decoder, interior DA-XCK is divided into 8 equal parts and output as DA-BCK (Formula 2) f DA-BCK = f DA-XCK /8 ...........................................................................................................................2 Therefore, DA-XCX frequency takes the value 384fs according to formulas 1 and 2. Audio data bit length is fixed 24bit. (Formula 3) f DA-XCX = Audio data bit length * 2 * fs * 8 = 24 * 2 * fs * 8=384 fs.........................................................3 According to Formulas 2 and 3, A/V decoder drives DA-BCK with frequency 48 times of sampling frequency. (Formula 4) f DA-BCK =384fs/8 = 48fs..........................................................................................................................4 Chapter 1 19
The relationships between Audio interface signals (DA-XCK, DA-LRCK, DA-BCK) and each sampling frequency are as follows:
Sampling frequency: 44.1 kHz (For CD-DA and Video-CD) DA-XCK 384*fs=16.934MHz DA-BCK DA-XCK/8=2.1168MHz DA-LRCK DA-BCK/48=44.1kHz=fs Sampling frequency: 48kHz (for DVD) DA-XCK 384*fs=18.432MHz DA-BCK DA-XCK/8=2.304MHz DA-LRCK DA-BCK/48=48kHz=fs Sampling frequency: 96kHz (for DVD) DA-XCK 384*fs=36.864MHz DA-BCK DA-XCK/8=4.608MHz DA-LRCK DA-BCK/48=96kHz=fs
20MHz X'TAL (X1601)
20MHz clock is generated by attaching 20MHz crystal trembler to SH µ-COM (IC1601) and used as the system clock of SH µ-COM. This system clock is supplied to I/F GATE ARRAY (input at IC1101 39 pin) and used as clock.
20
Chapter 1
Chapter 1
BLOCK DIAGRAM OF 27MHz CLOCK CIRCUITS
VIDEO INTERFACE SIGNAL
I C1201 A/V ENCODER
VIDEO INTERFACE UNIT
VDATA (7:0) 8BIT DATA BUS VSYNC HSYNC
VIDEO ENCODER IC2202
CLK
VCK
AUDIO INTERFACE UNIT DA-XCK/8
DA-DATA 24 BIT SERIAL DATA DA-BCK 48fs DA-LRCK 44.1/48/96kHz
AUDIO INTERFACE SIGNAL
Audio DAC IC1501~IC1504
DA-XCK = 384fs
A5V
27MHz X'TAL X2201
21
Troubleshooting
VIDEO CIRCUIT
NO IMAGE
ARE SIGNALS OUTPUT FROM VIDEO OUTPUT TERMINAL?
Yes
CHECK SIGNAL CABLE/ MONITOR
No
ARE SIGNALS OUTPUT FROM PG2201 pins 17,15,13,11,9,7,3 ?
Yes
CHECK VIDEO OUTPUT SECTOR (PG1302/J1307/ J1302/J1306/J1361) OF RJK PwB
No
ARE SIGNALS OUTPUT FROM IC2202 pins 35,33,29,28, 25,24 ?
Yes
CHECK Q2206/Q2207/ Q2208/Q2209/Q2210/ Q2211/Q2212
No
ARE SIGNALS IC2202 pins 14,15,16, 20,21 ?
No
CHECK IC1201/IC1101/ IC1601
Yes
+5V AT IC2202 pins 46,34,32,30,27, 19,11,1 (VDD)?
No
CHECK POWER SUPPLY CIRCUIT
Yes
IS VOLTAGE AT IC2202 pin 44 (RESET) H LEVEL?
No
CHECK IC1601
Yes
IS CLOCK IN IC2202 pin 48 ?
No
CHECK X2201/ R1218
Yes
REPLACE IC2202
22
Chapter 1
AUDIO CIRCUIT
NO SOUND
IS THERE AN IMAGE?
No
BREAKDOWN BEFORE IC1201
Yes
ARE IC1502 pins 8, 9, 15, 20 5V?
No
ARE IC1506 pin 2 +5V & pin 1 +8V
No
CHECK IC1606 OR +8V LINE ETC.
Yes
Yes
ARE THERE SIGNALS AT IC1501~4 pins 1, 2, 3, 5?
BREAKDOWN OF IC1506 No
Yes
BREAKDOWN OF IC1201
ARE THERE SIGNALS AT pins 13, 16 ?
No
ARE THERE SIGNALS AT IC1501~4 pins 26, 27, 28 ?
Yes
BREAKDOWN OF IC1501~4
Yes No IS Q1505 BASE VOLTAGE 0V? No
BREAKDOWN OF IC1601 Yes
IS Q1506 COLLECTOR VOLTAGE -8V?
No
BREAKDOWN OF Q1505 OR Q1506 OR D1504
Yes
IS IC1501~4 pin 21 V O L T A G E 5V?
No
BREAKDOWN OF IC1501~IC1504
Yes
IS Q1507, Q1508, Q1501 COLLECTOR VOLTAGE -8V?
No
BREAKDOWN OF Q1507,Q1508,Q1501
YES
ARE SIGNALS AT IC1507,IC1508, IC1511,IC1513 pins 1,7 ?
No
BREAKDOWN OF IC1507,IC1508,IC1512, IC1514
YES
ARE SIGNALS AT IC1509, IC1510,IC1512,IC1514 pins 1,7 ?
No
BREAKDOWN OF IC1509,IC1510,IC1512, IC1514
Yes BREAKDOWN OF Q3503 OR Q3504 Q1306~Q1311 D1504 OR ZD1307
Chapter 1
23
KARAOKE CIRCUIT
(Only available at DVD-5500/DVD-5300 models)
NO MIC SOUND
IS THERE DISC SOUND?
No
NO SOUND OUTPUT
Yes
ARE SIGNAL AT IC2401 1 7 ?
No
CHECK ROUTE FROM MIC JACK J1763/1764 TO IC2401 3 5 CHECK IC2401 ETC.
Yes
ARE SIGNAL AT IC2404 5 8 ?
No
CHECK MIC VOLUME RV1762, RV1763 ETC.
Yes CHECK IC2404, IC1201, IC1505 ETC.
NO ECHO/KEY CONTROL EFFECT
REMOTE CONTROL ACTION OK?
No
CHECK REMOTE CONTROLLER AND RECEIVE CONTROL CIRCUIT ETC.
Yes
CHECK IC1201 ETC.
24
Chapter 1
About System Reset Function
The player can not work normaily with non-standard discs. If you encounter the abnormal status , please press STOP button once to stop it. If it can't stop normaily, please press POWER/STANDBY button. If the status is not changed in about 20 seconds after pressing POWER/STANDBY button then just press LAST button and ENTER button concurrently on the front panel to reset the system. After reseting, the system will restart and change into standby mode (The POWER/STANDBY indicator lights in red color ). Therefore, please press POWER/STANDBY button again to start the system. (Pull out the power cord and plug it again, the restarted system will also change into standby state.)
System Utility
How to upgrade the system utility
1. 2. 3. 4. 5. 6. Power on the system and press the OPEN/CLOSE button to open the DVD-ROM tray. Place the version-up CD-R disc into the DVD-ROM. The DVD player will read the CD-R disc and upgrade the system utility version, after about 40 seconds, the DVD-ROM tray will open automatically. Take out the version-up CD-R disc. Pull out the power cord then plug it again. Press the POWER/STANDBY button to restart the system, while the DVD-ROM tray closed, the version had been upgarded already.
NOTE: If the version of the system utility in the CD-R disk is older than original one, then the front display window will shows `No play'.
How to check the system utility version
1. At the power on state, press the POWER/STANDBY button and LAST button once in the same time and then release the POWER/STANDBY button only and still press the LAST button continually for more than 5 seconds. The front display window will appear the system utility version.
2.
Chapter 1
25
26
Chapter 1
Chapter 2
Removal and Replacement
Prelimaries before disassembling machines
This chapter contains step-by-step procedures on how to disassemble the DVD system for maintenance and troubleshooting. To disassemble the system, you need the following tools:
Wrist grounding strap and conductive mat for preventing electrostatic discharge Phillips screwdriver Tweezers
NOTE: The screws for the different components vary in size. During the disassembly process, group the screws with the corresponding components to avoid mismatch when putting back the components.
Before You Begin
Before proceeding with the disassembly procedure, make sure that you do the following: 1. 2. Turn off the power to the system and all peripherals. Unplug the AC adapter and all power and signal cables from the system.
Chapter 2
27
Disassembly Procedure Flowchart
The flowchart on the succeeding page gives you a graphic representation of the entire disassembly sequence and instructs you on the components that need to be removed during servicing. For example, if you want to remove the DVD-ROM drive, you must first remove the top cover, then disassemble the inside assembly frame in that order.
START START
TOP COVER
FRONT PANEL (w/ Foot Stand)
MPEG CONTROL BD.
POWER SUPPLY BD.
OUTLET BD.
FRONT PANEL CONTROL BD. (FSW)
DVD-ROM
MICROPHONE VOLUME CONTROL BD. (MVR)
MICROPHONE JACK BD. (FJK)
28
Chapter 2
Disassembly Procedures
Removing the Top Cover
1. . Remove the two screws from each side of the machine and the three screws from the rear side.
2. .
Gently pull out the top cover from both sides of the machine.
3. .
Slide out the top cover lightly until it clicks to let it out from the front panel. Then, lift it up and move away from the machine.
Removing the FootStand
1. Release the screw from the footstand, then remove the footstand..
Chapter 2
29
Removing the Front Panel
1. 2. Disconnect the three cables from the MPEG control board. Disconnect the cable and remove the two screws from the power supply board.
3.
Turn the machine over, then remove the screw from the bottom of the front panel.
4. .
Use a screwdriver into the emergency eject hole to release the screw by clockwise direction from bottom of the machine, and the DVD-ROM tray will eject gently.
5. .
Use your finger to slide up the DVD-ROM tray cover, then push the tray inside.
30
Chapter 2
6. .
Detach the latches from both sides of the front panel and the bottom side of the machine.
7. .
Gently pull out the front panel.
Removing the MPEG Control Board
1. 2. Disconnect the four cables and remove the four screws from the MPEG control board as shown below. Remove the MPEG control board..
Chapter 2
31
Removing the Power Supply Board
1. 2. Disconnect the two cables and remove the screw from the power supply board. Then, remove the two screws of the power socket on the rear panel of the machine.
3.
Slightly lift up and take away the power supply board.
Removing the DVD-ROM Drive
1. Remove the two screws from each side of the DVD-ROM drive, then remove the DVD-ROM drive.
2.
Disconnect the power cable and the IDE cable from the DVD-ROM drive.
32
Chapter 2
3.
To remove the kitting part, remove the four screws from the top of the DVD-ROM drive.
4. .
Remove the four screws of the DVD-ROM drive to detach the DVD-ROM shield and the two EMI shields from the bottom of the DVD-ROM drive.
Removing the Outlet Board
1. 2. . Disconnect the two cables and remove the four screws from the outlet board. Then, remove the eight screws from the rear panel of the machine.
3.
Lift the outlet board away.
Chapter 2
33
Removing the Front Panel Control Boards
1. 2. . Remove the eight screws from the front panel control board (FSW board). Remove the seven screws from the microphone volume control board (MVR board).
* Only available at DVD-5500/DVD-5300 models. 3. Use your finger to detach the video speed control knob as shown below.
4.
Use your finger to detach the cap of the volume adjuster as shown below.
* The Karaoke function is only available at DVD-5500/DVD-5300 models.
34
Chapter 2
5.
Gently lift up the front panel control boards then separate the two boards by disconnecting the connector in between them.
6.
Remove the screw from the microphone jack board, then detach the microphone jack board (FJK board)1.
1
This microphone jack board is for Karaoke function and only available at DVD-5500/DVD-5300 models.
Chapter 2
35
System Block Diagrams
MIC_SW (TO PG1602) PG2401 FJK BD. IC2401 BA4560 IC2402 IC2403 Q2401 VOICE_SW (TO IC1601) IC1506 PQ20WZ51 (FROM IC1505) DA_XCK1 PG2402 PG1101 ATAPI DVD-ROM IC1101 UPD65625GF FRAMWR (TO IC 1602) MVR BD. DVD[0..7] REQUEST,CSTROBE,ZWAIT,ZRD,ZWR X2201 OSC27MHz X2203 XTAL27MHz DA_XCK1 (TO IC1501~4) BLNKOUT (TO PG2201) IC1102 74AC244 SA[0..21] SD[0..15] BLNKOUT (FROM IC1505) IC1505 IC1605 IC1606 RESET IC DA_XCK VDATA[0..7] IC2202 ADV7172 BLANK (TO IC1505) IC2201 BA7660 PG2201 VIDEO CON HSYNC,VSYNC IC2404 CS5331 IC1201 ZIVA-3 DA_BCK,DA_LRCK,DA_DATA[0..3] MADDR[0..11] MDATA[0..15] IC1501 IC1502 IC1503 IC1504 PCM1716 IC2203 IC2204 8Mbits SDRAM SPDIF PG1502 AUDIO CON Q1501 Q1507 Q1508 Q1509 MUTE[1..4]
ADREQ,ADACK GDREQ,GDACK,SWAIT
FRAMWR (FROM IC1101)
IC1602 8Mbits FLASH
IC1603 4Mbits DRAM
IC1607 MIC_SW (FROM PG2401) SM530 X1601 XTAL20MHz PG1602 FSW BD. VOICE_SW (FROM Q2401) IC1601 HD7437020TE
CS2,RD
CASH,CASL,RAS,RD,WRL SDA,SCL
IC1604 AT2416N EEPROM
DAC[0..3],SICLK,SIODATA TG1601
PG1302
SCART OUT COMPONENT OUT VIDEO OUT S VIDEO OUT DIGITAL OUT (COAXIAL) (OPTICAL) TO DEC PWB TO FSW PWB TO DEC PWB TO DEC PWB TO DVD-ROM
TO DEC &DVD-ROM
IC1301 Buffer
T1301
TO DEC PWB TO FSW PWB TO FSW PWB
108& 08& 36/* 5 36/*5 MUTE A5V A-20V A-8V A8V S12V S5V S3.3V A5V AC 4.2V
% % 3 .5& 6
* $ 1 '
3 1
* $ " . 1
3 1
3+ ,1 8 # ,18 #
2 .5& 6 2 .5& 6 %X PJ ON Y %X 3 PJ ON Y
5
7
5
7
* $ 1 '
FL 3 1
* $ " . 1
3 1
2 .5& 6 2 .5& 6
FRONT -
FR
5
7
5
FRONT R
7
.5& 6
PG1701
.* , $+ " $
SL
MIC2 JACK
* $ 1 '
3 1
* $ " . 1
3 1
IC1701 FL u-CON
2 .5& 6 2 .5& 6
4330 6% 6 / 4330 6% 6 /
-
SR
5
7
5
7
R
*$
CONTROL KEY S1701~S1715,S1718
IR FJK PWB
$/ $/
1 ( (
.5& 6 * $ 1 '
CENTER 3 1
* $ " . 1
3 1 7
MIC1 VOL
2 .5& 6 2 .5& 6
CENTER
FL DISPLAY IC1702 FSW PWB
WOOFER
MIC2 VOL
5
7
5
WOOFER
MVR PWB
.5& 6
Appendix A
43
Exploded Diagram
Appendix A
44
REPLACEMENT PARTS LIST Note: The model names shown in the parts list are abberiated as follows.
E:DV-P250E M:DV-P250A(M) C:DV-P250C UK:DV-P250E(UK) S:DV-P250A(S) U:DV-P250U AU:DV-P250A(AU) PX:DV-P250U(PX) T:DV-P250A(T)
SYMBOL NO 2 2 2 3 3 3 4 4 4 5 5 5 5 11 11 12 13 16 16 16 17 17 17 17 18 19 19 19 19 19 20 20 20 20
P-NO
PH16681 PH16682 PH16683 PC14601 PC14602 PC14605 PC14612 PC14616 PC14618 325A961 325A962 325A963 325A964 EF13871 EF13872 EF13683 KK10323 QA12361 QA12362 QA12363 335A061 335A062 335A063 335A064 UQ20351 5002141 5002142 5002143 5002144 5002561 5002131 5002132 5002531 5002531
DESCRIPTION
Panel tray set[E.UK] Panel tray set[M.S.AU.T.C] Panel tray set[U.PX] Knob (JOG)[E.UK] Knob (JOG)[U.PX] Knob (JOG)[M.S.AU.T.C] Knob (SHU)[U.PX] Knob (SHU)[E.UK] Knob (SHU)[M.S.AU.T.C] Panel front set[E.UK] Panel front set[U.PX] Panel front set[M.S.AU.T] Panel front set[C] Connector (4PIN)[U.PX.M.S.AU.T.C] Connector (4PIN)[E.UK] Connector (40PIN) Rubber belt Cover top[E.UK] Cover top[M.S.AU.T.C] Cover top[U.PX] Panel rear Panel rear Panel rear Panel rear ROM DRIVE DEC DEC DEC DEC DEC MVR MVR MVR MVR PWB PWB PWB PWB PWB PWB PWB PWB PWB set[E.UK] set[U.PX] set[T] set[M.S.AU.C]
SYMBOL NO 20 20 21 21 21 21 21 22 22 22 22 22 23 23 23
P-NO
5002133 5002134 5002111 5002112 5002113
DESCRIPTION
MVR MVR FSW FSW FSW PWB PWB PWB PWB PWB Assy[PX] Assy[M.S.AU.T] Assy[E.UK] Assy[U] Assy[PX]
5002511 FSW PWB Assy[C]
5002114 5002121 5002122 5002123 5002124 257A181 257A201 257A211 460A622 460A623 460A624 460A625 460A626 460A627 460A628 460A629 261A381 237A482 237A481 237A489 261A531 261A611 261A641 EV00711 EV00731 EV00741 261A841 FSW RJK RJK RJK PWB PWB PWB PWB Assy[M.S.AU.T] Assy[E.UK] Assy[U] Assy[PX]
RJK PWB Assy[M.S.AU.T] Power unit[U.T] Power unit[E.UK.M.S.AU.C] Power unit[PX] Instruction Instruction Instruction Instruction Instruction Manual[E] Manual[E] Manual[UK] Manual[U.PX] Manual[T]
5002521 RJK PWB Assy[C]
! ! !
Instruction Manual[M.S] Instruction Manual[AU.T] Instruction Manual[U.PX] Cord (3PIN)
Remote control (DV-RM250)[U.PX.M.S.AU.T] Remote control (DV-RM250E)[E.UK] Remote control[C]
Assy[E.UK] Assy[U] Assy[PX] Assy[M.S.AU.T] Assy[C] Assy[E.UK] Assy[U] Assy[C] Assy[C]
! ! !
Cord AC[AU] Cord AC[S] Cord AC[U.PX] Cord Cord Cord Cord AC[T] AC[UK.M] AC[E] AC[C]
! ! ! !
Appendix A
45
A
B
C
D
E
C3515
A8V 1 1 2 DOWNMIX-L R3515 47KR5
*
DEC-->RJK
PG1301 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 SMKCON25 C1561 0.0027(M) C1557 FL
3
E22U16V C3509 1 DL DM-GND DR DM-GND M U T E1 D L A M UTE A8V A-8V +5V(D) S/P DIF D-GND M U T E2 M U T E3 M U T E4 FR-GND FR-GND SR-GND SR-GND C&S-GND FL 2 1 2K2R5 VCC OUT2 -IN2 +IN2 BA4560F 8 7 6 5 R3509 1 2 A8V 1 C3511 2 C470P1KV 2 A-8V 2 C1575 E100U16V 2 1 2 1 1 C1576 R3513 36KR5 1
NTMT
C3513 C56P IC1509 1 2 3 4 R3511 39KR5 OUT1 -IN1 +IN1 VEE BA4560F VCC OUT2 -IN2 +IN2 8 7 6 5
DM-GND DM-GND
C3505 C3501 1 2 2 1 150R5 E4D7U35V 2K2R5 R3501 100KR5 1 C3503 0.0068(M) R3503 2 1 R3505 2 1 R3507 2K2R5 C3507 0.00082(M) 1 2 0.0027(M)
2
E47U16V 1 2 3 4 OUT1 -IN1 +IN1 VEE
DM-GND
C3516 1 2 1 DOWNMIX-R
4
E100U16V
2
4
1
C1333
2 R3514 36KR5 2
E22U16V
C1330 E100U16V A-8V C3506
IC1507
E100U16V
R3523 100KR5 R3510 1 2K2R5 2 C3512 C470P1KV
NTMT
C3514 C56P 2
R3516 47KR5
DM-GND DM-GND
R3504 1 150R5 R3502 100KR5 2K2R5 C3504 0.0068(M) 2 1 R3506 2 1 R3508 2K2R5 C3508 0.00082(M) 2 C3502 2
C3510 1 2
DM-GND
DM-GND
1 1
DM-GND
R3524 100KR5
2 FR-GND DR 1 FR FR-GND E4D7U35V SL SR-GND SR SR-GND CENTER C&S-GND SW
0.0027(M) E47U16V
DM-GND
2
R3512 39KR5 2
DM-GND
E22U16V C1567 E47U16V 1 2 3 4 2 C1565 OUT1 -IN1 +IN1 VEE IC1508 1 VCC OUT2 -IN2 +IN2 BA4560F 1 2 R1533 1 2K2R5 8 7 6 5 2 A8V 1 C1571 C470P1KV 1 1
A8V C1580 1
1
DM-GND
C1583
1
1
2
FRONT-L R2523 47KR5
R1543 36KR5 2
NTMT
C1581 C56P IC1510 1 2 3 4 2 A-8V C1579 E100U16V 1 OUT1 -IN1 +IN1 VEE BA4560F VCC OUT2 -IN2 +IN2 8 7 6 5
E100U16V 2 2 C1584 1 1 2 1 FRONT-R E22U16V R1544 36KR5 2
R1527 1 150R5 2 2 1
R1529 2 2K2R5 1
R1531 2 2K2R5 C1563 0.00082(M)
FR-GND
1
2
E4D7U35V
2
1
C1566 E100U16V
R1574 100KR5 1
C1559 0.0068(M)
FR-GND
E100U16V A-8V C1562 1 0.0027(M) E47U16V C1564 0.00082(M) 2K2R5 C1568 2 1 R1534 2
R3525 100KR5 2
R1539 39KR5 2
NTMT
C1582 C56P 1 R1540 39KR5 2 2
R2524 47KR5
3
FR-GND
R1528 1 150R5 R1573 100KR5 1 2K2R5 C1560 0.0068(M) 2 2 1 R1530 2 1 R1532 2K2R5 2
FR-GND
C1572 C470P1KV
C1558 FR 1 2
1
FR-GND
*[ 5.1 ]
FR-GND
R3526 100KR5 2
E4D7U35V
FR-GND
C1595 C1589 1 0.15(M) 0.0027(M) IC1511 1 2 3 4 2 OUT1 -IN1 +IN1 VEE BA4560F A-8V C1596 C1590 0.0027(M) 2 2K2R5 C1592 0.001(M) 2 0.15(M) R1582 82KR5 1 1 2K2R5 C1598 C470P1KV C2525 1 2 R1552 2 2 1 VCC OUT2 -IN2 +IN2 8 7 6 5 A8V 1 2K2R5 R1583 82KR5 C1594 E100U16V 1 2 R1551 2 R1555 36KR5 2 1
E10U16V
C2505 1 2
FR-GND
SURROUND-L A8V C2502 1 1 R2531 47KR5 2
FR-GND
NTMT
C2503 C56P IC1512 1 2 3 4 OUT1 -IN1 +IN1 VEE BA4560F 1 VCC OUT2 -IN2 +IN2
E100U16V 8 7 6 5 1 2
C1585 SL 1 2 2 1
R1545 2 150R5 1
R1547 2 2K2R5 1
R1549 2 2K2R5 C1593
C1597 C470P1KV 1 2 R1553 39KR5 C2501 E100U16V
SR-GND
1 R1556 36KR5 2
C2506 2 E10U16V 1 R2532 47KR5 2 SURROUND-R
2
R1572 100KR5 1
C1587 0.01(M)
C1591 0.001(M)
2
E4D7U35V
NTMT
SR-GND
E100U16V
NTMT
C2504 C56P 1 R1554 39KR5
2
SR-GND
R1546 1 150R5 2 1 2K2R5 R1548 2
SR-GND
R1550 1
SR-GND
A-8V
C1586 SR 1 2 2
R1571 100KR5 1
SR-GND SR-GND
C2511 0.0027(