Samsung DVD RECEIVER AMP

INDEX

• Ch1 Precautions
  
  • Safety Precautions.......................................1-1
  • Servicing Precautions.................................1-2
  • Precautions for Electrostatically Sensitive Device (ESDs ...............................1-3
  • Special Precautions and Warning Lables for Laser Products ............................1-4
  • Special Precautions for HDD .......................1-5
• Ch2 Product Description
  
  • Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
  • Specifications . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
  • Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
• Ch3 Product Functions
  
  • SPK connection ...........................................3-1
  • Main Functions.............................................3-2
  • New Functions .............................................3-3
• Ch4 Adjustments
  
  • DVD flash Initialization & Update .................4-1
• Ch9 Block Diagram
  
  • Block ............................................................9-1
• Ch10 Wiring Diagram
  
  • Wiring Diagram ..........................................10-1
• Ch11 PCB Diagram
  
  • PCB FRONT ..............................................11-1
  • PCB MAIN..................................................11-2
  • PCB AMP...................................................11-3
  • PCB SMPS ................................................11-4
• Ch12 Schematic Diagram
  
  • MAIN ..........................................................12-1
  • AMP ...........................................................12-6
  • FRONT .......................................................12-7
  • SMPS .........................................................12-8
• Ch5 How to disassemble
  
  • How to disassemble.....................................5-1
• Ch6 TroubleShooting
  
  • Main .............................................................6-1
  • Actions to take when Protection is enabled.6-2
• Ch13 Circuit Board Description
  
  • Circuit Layout and Functions (HT-X30) ......13-1
  • The Functions of each Board................13-4
• Ch7 Exploded Views and Parts List
  
  • Total Exploded View.....................................7-1
• Ch8 Electrical Parts List
  
  • Electrical Parts List .....................................8-1

Chapter 1: Precautions

Follow these safety, servicing and ESD precautions to prevent damage and protect against potential hazards such as electrical shock and X-rays.

1-1 Safety Precautions

1. Be sure that all of the built-in protective devices are replaced.
2. When reinstalling the chassis and its assemblies, be sure to restore all protective devices, including control knobs and compartment covers.
3. Make sure that there are no cabinet openings through which people--particularly children--might insert fingers and contact dangerous voltages. Such openings include the spacing between the picture tube and the cabinet mask, excessively wide cabinet ventilation slots, and improperly fitted back covers.
4. Design Alteration Warning: Never alter or add to the mechanical or electrical design of the unit. Example: Do not add auxiliary audio or video connectors. Such alterations might create a safety hazard. Also, any design changes or additions will void the manufacturer's warranty.
5. Leakage Current Hot Check (Figure 1-1): Warning: Do not use an isolation transformer during this test. Use a leakage-current tester or a metering system that complies with American National Standards Institute (ANSI C101.1, Leakage Current for Appliances), and Underwriters Laboratories (UL Publication UL1410, 59.7). With the unit completely reassembled, plug the AC line cord directly into a 120V AC outlet. With the unit's AC switch first in the ON position and then OFF, measure the current between a known earth ground (metal water pipe, etc.) and all exposed metal parts. Examples: Handle brackets, metal cabinets, screwheads and control shafts. The current measured should not exceed 0.5 milliamp. Reverse the power-plug prongs in the AC outlet and repeat.

Figure 1-1 AC Leakage Test: Depicts a test setup with a 'Device Under Test' connected via a '2-Wire Cord' to a 'Leakage Current Tester'. The tester is connected to 'Earth Ground'. The test involves checking all exposed metal surfaces, including with the plug reversed. The reading should not be above 0.5mA.

6. Insulation Resistance Cold Check: (1) With the unit's AC plug disconnected from the AC source, connect an electrical jumper across the two AC prongs. (2) Set the power switch to ON. (3) Measure the resistance between the shorted AC plug and any exposed metallic parts. Example: Screwheads, antenna, control shafts or handle brackets. If any of the exposed metallic parts has a return path to the chassis, the measured resistance should be between 1 and 5.2 megohms. If there is no return path, the measured resistance should be "infinite." If the resistance is outside these limits, a shock hazard might exist. See Figure 1-2

Figure 1-2 Insulation Resistance Test: Shows an 'Antenna Terminal' and an 'Exposed Metal Part' connected to an 'Ohmmeter' to measure resistance.

1-1 Safety Precautions (Continued)

7. Components, parts and wiring that appear to have overheated or that are otherwise damaged should be replaced with parts that meet the original specifications. Always determine the cause of damage or overheating, and correct any potential hazards.
8. Observe the original lead dress, especially near the following areas: Antenna wiring, sharp edges, and especially the AC and high voltage power supplies. Always inspect for pinched, out-of-place, or frayed wiring. Do not change the spacing between components and the printed circuit board. Check the AC power cord for damage. Make sure that no wires or components touch thermally hot parts.
9. Product Safety Notice: Some electrical and mechanical parts have special safety-related characteristics which might not be obvious from visual inspection. These safety features and the protection they give might be lost if the replacement component differs from the original--even if the replacement is rated for higher voltage, wattage, etc.
10. Components that are critical for safety are indicated in the circuit diagram by shading, [symbol for safety critical component], or [symbol for safety critical component]. Use replacement components that have the same ratings, especially for flame resistance and dielectric strength specifications. A replacement part that does not have the same safety characteristics as the original might create shock, fire or other hazards.

1-2 Servicing Precautions

Warning1: First read the "Safety Precautions" section of this manual. If some unforeseen circumstance creates a conflict between the servicing and safety precautions, always follow the safety precautions.

1. Servicing precautions are printed on the cabinet. Follow them.
2. Always unplug the unit's AC power cord from the AC power source before attempting to: (a) Remove or reinstall any component or assembly, (b) Disconnect an electrical plug or connector, (c) Connect a test component in parallel with an electrolytic capacitor.
3. Some components are raised above the printed circuit board for safety. An insulation tube or tape is sometimes used. The internal wiring may be clamped to prevent contact with thermally hot components. Reinstall all such elements to their original position.
4. After servicing, always check that the screws, components and wiring have been correctly reinstalled. Make sure that the portion around the serviced part has not been damaged.
5. Check the insulation between the blades of the AC plug and accessible conductive parts (examples: metal panels, input terminals and earphone jacks).
6. Insulation Checking Procedure: Disconnect the power cord from the AC source and turn the power switch ON. Connect an insulation resistance meter (500V) to the blades of the AC plug. The insulation resistance between each blade of the AC plug and accessible conductive parts (see above) should be greater than 1 megohm.
7. Never defeat any of the B+ voltage interlocks. Do not apply AC power to the unit (or any of its assemblies) unless all solid-state heat sinks are correctly installed.
8. Always connect a test instrument's ground lead to the instrument chassis ground before connecting the positive lead; always remove the instrument's ground lead last.

1-3 Precautions for Electrostatically Sensitive Devices (ESDs)

1. Some semiconductor ("solid state") devices are easily damaged by static electricity. Such components are called Electrostatically Sensitive Devices (ESDs). Examples include integrated circuits and some field-effect transistors. The following techniques will reduce the occurrence of component damage caused by static electricity.
2. Immediately before handling any semiconductor components or assemblies, drain the electrostatic charge from your body by touching a known earth ground. Alternatively, wear a discharging wrist-strap device. (Be sure to remove it prior to applying power--this is an electric shock precaution.)
3. After removing an ESD-equipped assembly, place it on a conductive surface such as aluminum foil to prevent accumulation of electrostatic charge.
4. Do not use freon-propelled chemicals. These can generate electrical charges that damage ESDs.
5. Use only a grounded-tip soldering iron when soldering or unsoldering ESDs.
6. Use only an anti-static solder removal device. Many solder removal devices are not rated as "anti-static" (these can accumulate sufficient electrical charge to damage ESDs).
7. Do not remove a replacement ESD from its protective package until you are ready to install it. Most replacement ESDs are packaged with leads that are electrically shorted together by conductive foam, aluminum foil or other conductive materials.
8. Immediately before removing the protective material from the leads of a replacement ESD, touch the protective material to the chassis or circuit assembly into which the device will be installed.
9. Minimize body motions when handing unpackaged replacement ESDs. Motions such as brushing clothes together, or lifting a foot from a carpeted floor can generate enough static electricity to damage an ESD.

1-4 Special Precautions and Warning Labels for Laser Products

(UL) This Product Complies with DHHS Rules 21CFR, Sub chapter J.At date of Manufacture

(CSA) CERTIFIED ONLY TO CANADIAN ELECTRICAL CODE. CERTIFIE EN VERTU DU CODE CANADIAN DE LELETRICITE SEULEMENT

(UL,CSA,EU) CLASS 1 LASER PRODUCT

(UL,CSA,SCAN) CAUTION : INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCKS DEFEATED AVOID EXPOSURE TO BEAM. ADVARSEL: USYNLIG LASERSTRÅLING VED ÅBNING NÅR SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION UNDGA UDSAETTELSE FOR STRÅLING. VARO:AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTINA NAKYMATTÖMALLE LASERSATEILYLLE ALA KATSO SATEESEEN! VARNING:OSYNLIG LASERSTRÅLNING NAR DENNA DEL ÄR OPPNAD OCH SPARREN ÄR URKOPPLAD BETRAKTA EJSTRÅLEN!

Figure 1-3 Warning Labels (Location: Enclosure Block)

UL : Manufactured for U.S.A. Market.

CSA : Manufactured for Canadian Market.

EU : Manufactured for European Market.

SCAN : Manufactured for Scandinavian Market.

Figure 1-4 Warning Labels (Location: Disc Clamper, Inner Side of Unit Door or Nearby Unit Chassis )

1-4-1 Warnings

1. When servicing, do not approach the LASER exit with the eye too closely. In case it is necessary to confirm LASER beam emission, be sure to observe from a distance of more than 30 cm from the surface of the objective lens on the optical pick-up block.
2. Do not attempt to handle the objective lens when the DISC is not on the tray.

1-4-2 Laser Diode Specifications

Material: GaAs+ GaAlAs

Wavelength: 760-800 nm

Emission Duration: Continuous

Laser Output: 0.2 mw (measured at a 1.6 mm distance from the objective lens surface on the optical pick-up block.)

1-4-3 Handling the Optical Pick-up

1. Static electricity from clothing or the body may cause electrostatic breakdown of the laser diode in the Optical Pickup. Follow this procedure:
2. Place a conductive sheet on the work bench (i.e., the black sheet used for wrapping repair parts.) Note: The surface of the work bench should be covered by a copper ground plane, which is grounded.
3. The repair technician must wear a wrist strap which is grounded to the copper sheet.
4. To remove the Optical Pickup block: Place the set on the conductive sheet, and momentarily touch the conductive sheet with both hands. (While working, do not allow any electrostatic sources--such as clothes--to touch the unit.)
5. Ground the "Short Terminal" (located on the PCB, inside the Pickup Assembly) before replacing the Pickup. This terminal should be shorted whenever the Pickup Assembly is lifted or moved.
6. After replacing the Pickup, reopen the Short Terminal. See diagrams below.

1-5 Special Precautions for HDD

* HDD Data Maintenance Step

1. Since the data on the HDD is weak to mechanical shock, place the HDD in a safe location that is free from mechanical shock once it is removed from the main unit.
2. In order to safe keep the data on the HDD, back up the data before the repair or make sure not to place the HDD near any electrical appliance that generates a strong magnetic field.

Chapter 2: Product Description

1. Features

2. Specifications

HT-X30

HT-TX35

3. Accessories

4. Specification Comparison

Chapter 3: Product Functions

1. SPK connection

Accessories

[Image of Remote Control], [Image of Video Cable], [Image of FM Antenna], [Image of User's Manual]

Description

Front Panel

[Diagram of Front Panel with numbered controls and indicators]

1. Disc Tray, 2. Open/Close button, 3. Function button, 4. Stop [stop symbol] button, 5. Play/Pause [play/pause symbol] button, 6. Volume Control, 7. Power [power symbol] button, 8. Standby indicator, 9. AUX IN 1 Connector, 10. USB Connector, 11. Tuning Up & Skip [skip forward symbol] button, Tuning Down & Skip [skip backward symbol] button.

Rear Panel

[Diagram of Rear Panel with numbered ports]

1. Video Output Connector: Connect the TV's video input jacks (VIDEO IN) to the VIDEO OUT connector. 2. External Digital Optical Input Connector: Use this to connect external equipment capable of digital output. 3. Component Video Output Connectors: Connect a TV with component video inputs to these jacks. 4. FM Antenna Connector.

5. 5.1 Channel Speaker Output Terminals, 6. Cooling Fan, 7. TX Card (Wireless) Connector, 8. AUX IN 2 Connectors, 9. HDMI Output Port, 10. SCART Jack: Connect to a TV with scart input jack.

Display

[Diagram of Display Indicators with numbered labels]

1. P.SCAN indicator, 2. DOLBY DIGITAL indicator, 3. DTS Disc indicator, 4. LINEAR PCM indicator, 5. TITLE indicator, 6. GROUP indicator, 7. CHAPTER indicator, 8. TRACK indicator, 9. PROGRAM indicator, 10. REPEAT indicator, 11. PBC indicator, 12. TUNER indicator, 13. STEREO indicator, 14. RTA indicator, 15. RDS indicator, 16. PRO LOGIC indicator, 17. MPEG indicator, 18. DSP indicator, 19. System Status Display, 20. RADIO FREQUENCY indicator, 21. SPEAKER indicator.

2. Main Functions

Disc Playback

DVD, VCD, CD

1. Press OPEN/CLOSE button to open the disc tray.
2. Load a disc. Place a disc gently into the tray with the disc's label facing up.
3. Close the compartment by pressing the OPEN/CLOSE button again. Playback starts automatically.

To stop playback: Press STOP button during playback. If pressed once, "PRESS PLAY" is displayed and the stop position will be stored in memory. If PLAY/PAUSE [play/pause symbol] button or ENTER button is pressed, playback resumes from the stop position (DVDs only). If pressed twice, "STOP" is displayed, and if PLAY/PAUSE [play/pause symbol] button is pressed, playback starts from the beginning.

To temporarily pause playback: Press PLAY/PAUSE [play/pause symbol] button during playback. To resume playback, press PLAY/PAUSE [play/pause symbol] button again.

Avoid getting fingerprints on the writing surface of a disc. It may cause the disc to not read properly.

Depending on the content of the disc, the initial screen may appear different. Any piracy could not be runnable in the player. Otherwise, it violates the CSS recommendations.

What is CSS (Content Scrambling System)? The CSS is a copy protection device that prevents the content of a DVD from being copied into the HDD of the PC as it is, unlike other media, executable directly from the PC. And it is also a data decryption system that decrypts the key encryption with the encrypted title key (of the DVD title) and the player key (of the DVD player).

Position of the DVD Player

Place it on a stand or cabinet shelf, or under the TV stand.

Selecting the Listening Position

The listening position should be located about 2.5 to 3 times the distance of the TV's screen size away from the TV. Example: For 32" TVs 2~2.4m (6~8feet), For 55" TVs 3.5~4m (11~13feet).

Front Speakers L R

Place these speakers in front of your listening position, facing inwards (about 45°) toward you.

Place the speakers so that their tweeters will be at the same height as your ear.

Align the front face of the front speakers with the front face of the center speaker or place them slightly in front of the center speakers.

Center Speaker C

It is best to install it at the same height as the front speakers. You can also install it directly over or under the TV.

Rear Speakers SL SR

Place these speakers behind your listening position.

If there isn't enough room, place these speakers so they face each other.

Place them about 60 to 90cm (2 to 3feet) above your ear, facing slightly downward.

* Unlike the front and center speakers, the rear speakers are used to handle mainly sound effects and sound will not come from them all the time.

Subwoofer SW

The position of the subwoofer is not so critical. Place it anywhere you like.

HT-X30 Speaker Placement Diagram

[Diagram showing placement of Front L/R, Center, Rear L/R, and Subwoofer speakers for HT-X30]

HT-TX35 Speaker Placement Diagram

[Diagram showing placement of Front L/R, Center, Rear L/R, and Subwoofer speakers for HT-TX35]

Connecting the Speakers

1. Press down the terminal tab on the back of the speaker.
2. Insert the black wire into the black terminal (-) and the red wire into the red (+) terminal, and then release the tab.
3. Connect the correct color speaker cable to the same color speaker output terminal on the rear of the subwoofer, according to the polarity markings (+/-). Example: Connect the green center speaker cable to the green center speaker output terminal on the rear of the subwoofer according to the polarity markings (+/-).

Safety Notes for Speakers:

• Do not let children play with or near the speakers. They could get hurt if a speaker falls.
• When connecting the speaker wires to the speakers, make sure that the polarity (+/-) is correct.
• Keep the subwoofer speaker out of reach of children so as to prevent children from inserting their hands or alien substances into the duct (hole) of the subwoofer speaker.
• Do not hang on the wall through the duct (hole).
• If you place a speaker near your TV set, screen color may be distorted because of the magnetic field generated by the speaker. If this occurs, place the speaker away from your TV set.

Selecting Audio/Subtitle Language

Audio Language Selection Function

DVD

1. Press INFO button twice.
2. Press Cursor [arrow keys] buttons or numeric buttons to select the desired audio language.

Depending on the number of languages on a DVD disc, a different audio language (ENGLISH, SPANISH, FRENCH, etc.) is selected each time the button is pressed.

Subtitle Language Selection Function

DVD

1. Press INFO button twice.
2. Press Cursor [arrow keys] button to move to SUBTITLE [subtitle symbol] display.
3. Press Cursor [arrow keys] button or numeric buttons to select the desired subtitle.

To operate this function, you can also press the Select AUDIO or Select SUBTITLE buttons on the remote control.

Depending on the disc, the Subtitle and Audio Language functions may not be available.

3. New Functions

DivX Playback

The functions on this page apply to DivX disc playback.

Skip Forward/Back

During playback, press the [skip forward symbol] or [skip backward symbol] button.

• Goes to the next file whenever you press [skip forward symbol] button, if there are over 2 files in the disc.
• Goes to the previous file whenever you press [skip backward symbol] button, if there are over 2 files in the disc.

Fast playback

To play back the disc at a faster speed, press [fast rewind symbol] or [fast forward symbol] button during playback.

Each time you press either button, the playback speed will change as follows: 2x, 4x, 8x, 32x, Normal.

5 Minute Skip function

During playback, press the [skip symbol] button.

• Playback skips 5 minutes forward whenever you press [skip symbol] button.
• Playback skips 5 minutes back whenever you press [skip symbol] button.

Zoom Function

1. Press ZOOM button.
2. Each time you press the button, your selection will toggle between <ZOOM X2> and <ZOOM OFF>.
3. Press Cursor [arrow keys] buttons to move to the area you want to enlarge.

DivX file can be zoomed only in ZOOM X2 mode.

DivX files have .Avi file extensions, however, not all .Avi files are DivX and may not be playable in this unit.

Audio Display

Press the AUDIO button.

• If there are multiple audio tracks on a disc, you can toggle between them.
• Each time you press the button, your selection will toggle between <AUDIO (1/N, 2/N...)> and [audio symbol].

[audio symbol] is displayed when there is one supported language in the disc.

Subtitle Display

Press the SUBTITLE button.

• Each time you press the button, your selection will toggle between <SUBTITLE (1/N, 2/N...)> and <SUBTITLE OFF>.
• If the disc has only one subtitle file, it will be played automatically.
• See number 2 (Caption Function) below for more details concerning Subtitle usage with DivX discs.

If the disc has more than one subtitle file

If the disc has more than one subtitle file, the default subtitle may not match the movie and you will have to select your subtitle language as follows:

1. In Stop mode, press the [menu button] button, select the desired subtitle ([subtitle symbol]) from the TV screen, and then press the ENTER button.
2. When you select the desired DivX file from the TV screen, the movie will be played normally.

DivX(Digital internet video eXpress)

DivX is a video file format developed by Microsoft and is based on MPEG4 compression technology to provide audio and video data over the Internet in real-time. MPEG4 is used for video encoding and MP3 for audio encoding so that the users can watch a movie at near DVD-quality video and audio.

1. Supported Formats

This product only supports the following media formats. If both video and audio formats are not supported, the user may experience problems such as broken images or no sound.

* DivX files, including audio and video files, created in the DTS format can only support up to 6Mbps.

* Aspect Ratio: Although default DivX resolution is 640x480 pixels (4:3), this product supports up to 800x600 pixels (16:9). TV screen resolutions higher than 800 will not be supported.

* When you play a disc whose sampling frequency is higher than 48khz or 320kbps, you may experience shaking on the screen during playback.

2. Caption Function

• You must have some experience with video extraction and editing in order to use this feature properly.
• To use the caption function, save the caption file (*.smi) in the same file name as that of the DivX media file (*.avi) within the same folder. Example: Root Samsung_007CD1.avi Samsung_007CD1.smi
• Up to 60 alphanumeric characters or 30 East Asian characters (2 byte characters such as Korean and Chinese) for the file name.

Setting TV Screen type

Depending on your TV type (Wide Screen or conventional 4:3), you can select the TV's aspect ratio.

Setup Menu Navigation:

1. In Stop mode, press MENU button.
2. Press Cursor [arrow keys] button to move to <Setup> and then press ENTER button.
3. Press Cursor [arrow keys] button to move to <TV DISPLAY> and then press ENTER button.
4. Press Cursor [up/down arrow keys] button to select the desired item and then press ENTER button.

Once the setup is complete, you will be taken to the previous screen.

Press RETURN button to return to the previous level.

Press MENU button to exit the setup screen.

Adjusting the TV Aspect Ratio (Screen Size)

The horizontal to vertical screen size ratio of conventional TVs is 4:3, while that of widescreen and high definition TVs is 16:9. This ratio is called the aspect ratio. When playing DVDs recorded in different screen sizes, you should adjust the aspect ratio to fit your TV or monitor.

For a standard TV, select either <4:3LB> or <4:3PS> option according to personal preference. Select "16:9" if you have a widescreen TV.

WIDE: Select this to view a 16:9 picture in the full-screen mode on your widescreen TV. You can enjoy the widescreen aspect.

4:3LB (4:3 Letterbox): Select this to play a 16:9 picture in the letter box mode on a conventional TV. Black bars will appear at the top and bottom of the screen.

4:3PS (4:3 Pan&Scan): Select this to play a 16:9 picture in the pan & scan mode on a conventional TV. You can see the central portion of the screen only (with the sides of the 16:9 picture cut off).

* If a DVD is in the 4:3 ratio, you cannot view it in widescreen.

* Since DVD discs are recorded in various image formats, they will look different depending on the software, the type of TV, and the TV aspect ratio setting.

Playing Media Files using the USB HOST feature

You can enjoy media files such as pictures, movies and music saved in an MP3 player, USB memory or digital camera in high quality video with 5.1 channel home theater sound by connecting the storage device to the USB port of the home theater.

1. Connect the USB device to the USB port on the front of the unit.
2. Press the FUNCTION button on the main unit or the USB button on the remote control to select the USB mode. <USB> appears on the display screen and then disappears. USB MENU screen appears on the TV screen and the saved file is played.
3. To stop playback, press the STOP [stop symbol] button.

Safe USB Removal

To prevent damage to the memory stored in the USB device, perform safe removal before disconnecting the USB cable.

1. Press the STOP [stop symbol] button twice in a row. The display will show REMOVE USB.
2. Remove the USB cable.

Skip Forward/Back

During playback, press the [skip forward symbol] or [skip backward symbol] button.

• When there is more than one file, when you press the [skip forward symbol] button, the next file is selected.
• When there is more than one file, when you press the [skip backward symbol] button, the previous file is selected.

Fast playback

To play back the disc at a faster speed, press [fast rewind symbol] or [fast forward symbol] button during playback.

Each time you press either button, the playback speed will change as follows: 2x, 4x, 8x, 32x, Normal.

Compatible Devices

1. USB devices that support USB Mass Storage v1.0. (USB devices that operate as a removable disc in Windows (2000 or later) without additional driver installation.)
2. MP3 Player: HDD and flash type MP3 players.
3. Digital camera: Cameras that support USB Mass Storage v1.0. Cameras that operate as a removable disc in Windows (2000 or later) without additional driver installation.
4. USB HDD and USB Flash Drive: Devices that support USB2.0 or USB1.1. You may experience a difference in playback quality when you connect a USB1.1 device. For a USB HDD, make sure to connect an auxiliary power cord to the USB HDD for proper operation.
5. USB card Reader: One slot USB card reader and Multi slot USB card reader. Depending on the manufacturer, the USB card reader may not be supported. If you install multiple memory devices into a multi card reader, you may experience problems.
6. If you use a USB extension cable, the USB device might not be recognized.

Supported Formats

* CBI (Control/Bulk/Interrupt) is not supported.

* Digital Cameras that use PTP protocol or require additional program installation when connected to a PC are not supported.

* A device using NTFS file system is not supported. (Only FAT 16/32 (File Allocation Table 16/32) file system is supported.)

* Some MP3 players, when connected to this product, may not operate depending on the sector size of their file system.

* The USB HOST function is not supported if a product that transfers media files by its manufacturer-specific program is connected.

* Does not operate with Janus enabled MTP (Media Transfer Protocol) devices.

* The USB host function of this product does not support all USB devices. For information on the supported devices, see page 66.

Chapter 4: Adjustments

DVD flash Initialization & Update

Checking out MICOM & MPEG flash Version

1. Play DVD-DISC or CD-DISC,
2. Press 'MENU' button on the Remote Control,
3. Press '8', '9', '5' one by one, then press 'ENTER'

DVD flash Initialization & Update (firmware)

1. Prepare DISC-CD, DVD or the USB device that contains HEX file for Update.
2. Play the DISC or connect the USB cable, then 'Updating' will appear on the screen, then Power will go on and out.
3. Then DISC-TRAY will OPEN, then remove DISC or take off USB cable, making Unit 'NO DISC' state'.
4. Press 'STOP' button of Main Unit 5 seconds more, Display Indicator shows 'INITIALIZE' then Power go out.
5. Initialization complete.

[Image showing Connecting USB, TV Display (On Updating), and Update start]

Chapter 5: How to disassemble

* CAUTIONS

1. To avoid damage to the product, follow the disassembly method in the Service Manual.
2. As some Semiconductor devices are very sensitive to static, ensure that all procedures are adhered to when handling ESD's.

Chapter 6: TroubleShooting

1. Main

[Flowchart diagram for troubleshooting the main unit. It details checks for UIC1, POWER-SENSE, UIC2, VFD, and connectors, leading to potential component replacements like CN03 wire, D51, MICOM (UIC1), or VFD DRIVER IC (UIC2), or checks on SMPS PCB components like IC1, Fuse (F1), T2, or D01.]

Actions to take when Protection is enabled

Locating a PBA that causes Protection.

1. Protection Conditions
   1. The PVDD voltage (CN02) for SMPS is higher or lower than normal. Normal: PVDD (CN02): 28 V ~ 31 V
   2. The Power Stage is over-current (Over-output and SPK Short).
   3. The temperature of the Power Stage is more than or equal to 150℃ (Thermal Protection).
   4. The 2nd voltage is short and open.

2. Locating Protection Point

You can determine whether the AMP is faulty before proceeding with disassembly. (The AC cord is not connected to an outlet.)

Locating after disassembly

Check if each connector wire and cable is properly plugged in. If unsure, remove the wire and cable, and plug them in again.

[Diagram showing speaker outputs and connections]

Measuring resistance with a tester

X30 Family

F/C/R-Ch.: Approx. 10kΩ

S-Woofer: Approx. 5kΩ

* When the resistance measurement is considerably lower than the above values, it indicates that the AMP-PCB is faulty.

Remove J3 (9-pin wire) from the PВА. Check if Protection is enabled upon power-on. Check the voltage between the PVDD and GND terminals (29.5V~31V or 12V ~ -12V) * NG->SMPS Replacement

Remove J7 (28-pin cable) from the PВА. Check if Protection is enabled upon power-on. AMP-PCB Fault (Identify a cause) NG->Amp PBA Repair and Replacement

Check each voltage for CN3 and other wires. Check if Protection is enabled upon power-on.

If the voltage for CN3 is not normal, remove the CON-Wire from the body and recheck the voltage for SMPS. -> If faulty, replace SMPS.

PCB Marking Rule

1> Check the power for SMPS.

2> If SMPS is ok, check the MPEG.

3> Main (Jack) PCB and power line fault (Identify a cause)

* For the Main PCB, check its voltage to identify a cause, rather than considering replacement.

Chapter 7: Exploded Views and Parts List

1. Total Exploded View

[Diagram showing an exploded view of the DVD Receiver Amp system with various parts labeled with alphanumeric codes like AC080, AM020, AH320, etc.]

Chapter 8: Electrical Parts List

[Table listing electrical components with Location, Code No., Description & Specification, and Remarks. This table is extensive and details resistors, capacitors, ICs, connectors, etc., with their part numbers and specifications.]

Example entries:

• AC18: 2401-000480 C-AL;10uF,20%,50V,GP,TP,5x11,5
• AIC3: 1002-001392 IC-A/D CONVERTER;WM8775EDS,24BIT,SSOP,28
• FR4: 2007-000124 R-CHIP;2.2Kohm,5%,1/10W,TP,1608
• IC1: 1204-002539 IC-PAL/NTSC DECODER;ES8381FCC,PQFP,256P,
• MCON1: 3711-004110 HEADER-BOARD TO CABLE;3WALL,12P,1R,2MM,S

Chapter 9: Block Diagram

1. Block

[Block diagram illustrating the main functional sections of the HT-X30 system, including Front Part, Main Part, Loader Part, Amp Part, and SMPS. It shows interconnections between components like A/D Converter, U-COM, MPEG Decoder, DRAM, ROM, PWM Modulator, and various input/output ports.]

Chapter 10: Wiring Diagram

Wiring Diagram

[Wiring diagram showing the interconnections between major assemblies: DECK ASSY (S75), MAIN ASSY, AMP ASSY, SMPS ASSY, ST-BY ASSY, and FRONT ASSY. It details pin assignments for various connectors and signal paths.]

Chapter 11: PCB Diagram

1. PCB FRONT

[Diagram showing the layout of the Front PCB (AH41-01030A) with component placement labels like FBD4, FCON1, KC21, KR26, SW1, UC58, UR15, etc.]

2. PCB MAIN

[Diagram showing the layout of the Main PCB (AH41-01029A) with numerous components and integrated circuits labeled. Key areas include the Phoenix chip, various ICs, connectors, and passive components.]

3. PCB AMP

[Diagram showing the layout of the Amplifier PCB (AH41-01031A) with a dense arrangement of components, including power transistors, capacitors, resistors, and ICs, indicating the audio amplification circuitry.]

4. PCB SMPS

[Diagram showing the layout of the Power Supply (SMPS) PCB (ORTP-616) with primary and secondary sections. It illustrates components like transformers, capacitors, diodes, regulators, and fuses, along with input and output connectors.]

Chapter 12: Schematic Diagram

1-1. MAIN

[Schematic diagram for the Main circuit of the HT-X30/KX30/TX35/TKX35, detailing the microcontroller, memory, various interfaces, and signal routing.]

1-2. MAIN

[Schematic diagram for the Main circuit, focusing on the microcontroller and its connections to various peripherals and interfaces.]

1-3. MAIN

[Schematic diagram for the Main circuit, illustrating analog video processing, SCART interface, and other signal paths.]

1-4. MAIN

[Schematic diagram for the MIC PART (X30/KX30/TX35/TKX35), showing microphone input, signal processing, and related power connections.]

1-5. MAIN

[Schematic diagram for the HDMI CIRCUIT, detailing the HDMI controller (SIL9030CTU80) and its interface connections, along with related components.]

2. AMP

[Schematic diagram for the Amplifier section, showing the power amplifier ICs (TASS5152), input/output signals, protection circuits, and connections to speakers and Anynet+ option.]

3. FRONT

[Schematic diagram for the Front circuit, illustrating controls like volume, power, buttons, display indicators, USB interface, and microphone inputs.]

4. SMPS

[Schematic diagram for the Switched-Mode Power Supply (SMPS), detailing the power conversion stages, voltage regulation, protection circuits, and output connectors for various voltages like +34.5V, +12V, -12V, +5V, +3.3V.]

Chapter 13: Circuit Board Description

1. Circuit Layout and Functions (HT-X30)

[Image showing the internal layout of the HT-X30 DVD Receiver Amp, with major circuit boards labeled: DM, NR, DC, MP G, MA N, AMP, FR N, SMPS.]

2. The Functions of each Board

SMPS

Block Type: SMPS

Main Functions: AC Power terminal and MCM Power. The power is transferred to the Main Power via Protection Circuits Fuse. When the AC cord is connected to an outlet, it operates in SMPS Stand-by mode. When the AC cord is connected to an outlet and the unit is in Stand-by mode, the power is supplied from SMPS to the Main Set for normal operation upon power-on. Connector Specifications: M: The C-power handles the Open/Close of the M-C array and Route etc. P-S NS: A terminal that uses Power-Sense to detect whether the AC cord is connected to an outlet. It is recognized by MCM for power-on. P/N: If the PWR-N terminal detects P/S NS in MCM and powers on the SMPS, this power drives the SMPS to supply all power to the Main PCB. Approx. 5W.

MCM5: Issues logic drive power for the Main MCM and FD Driver C and turns on the Red D. Approx. -3.

P: The negated drive power for the FD Driver C. Approx. -3.

FDDC: Drive Power for the Filament in FD. Approx. for each terminal upon power-on.

D5: MCA Digital Power AD Converter WM 5 Drive Power.

MA N-PCB

Block Type: MA N-PCB

Main MCM Section: - 10 M s illa or - C: Shared y PS BWM 5 and uner. - Da ta: Shared y PS BWM 5 S5G51 A and uner.

ak PCB Section: Control Section related to various video input: Audio 1 / Digital N upu: Composite / Component /P/Pr e. DM Control CC Sections - S10 X-C MC OFO3 MCM

FR N -PCB

Block Type: FR N -PCB

Front PCB Section: Controls operation of the front panel including FD driver and D operation. RMCN operation and Body keys operation.

FD and FD Drier C Circuit: Turns on the Red D upon s and-y and the Blue D upon power-on. Configures other AD circuits si hes. Volume Circuit: Turns on the volume Blue D upon power-on and operates the Dimmer n/ff Remo on.

AMP-PCB

Block Type: AMP-PCB

Main Functions: AMP Drive Section. The 1 S data from the MP G is input to the Modulator through PWM by channel and then for analog output via the AMP C in the Full Bridge method. Implements channels of 133 W per a single AS515 C.

Protection Circuit: Detects abnormal behavior in each AMP C and sends an alert to the -SD MCM Por Aieo.

Protection operation types: Short Circuit: When a short circuit occurs between /- SP outputs or between SP outputs and Chassis.

Over-Current Protection: When excessive current is induced to output. Over-temperature Protection: If the temperature of the C unit exceeds 155 °C, it should be kept typically below 15 °C to prevent overheating. Under-voltage Protection: Should be kept below the threshold.

Fan Drive Section:

- Size: RDM5015S

Control operation: Upon power-on, 1 power is issued to operate the Fan at a low level. Fan Drive Voltage: Approx. 5V. Fan Speed: Approx. 3 RPM Max.

MP GP-PCB

Block Type: MP GP-PCB

Main Functions: MP G Drive Section. S31 Implements DP, DS DD and D D-A D.