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SERVICE MANUAL
DVD Micro Hi-Fi System
SERVICE MANUAL
MODEL: XB64 (XBS64V)
MODEL: XB64 (XBS64V)
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS"
IN THIS MANUAL.
P/NO : AFN73972633 MARCH, 2010
CONTENTS
SECTION 1 ........ SUMMARY
SECTION 2 ........ CABINET & MAIN CHASSIS
SECTION 3 ........ ELECTRICAL
SECTION 4 ........ REPLACEMENT PARTS LIST
1-1
SECTION 1. GENERAL
SERVICING PRECAUTIONS
NOTES REGARDING HANDLING OF THE PICK-UP
1. Notes for transport and storage
1) The pick-up should always be left in its conductive bag until immediately prior to use.
2) The pick-up should never be subjected to external pressure or impact.
2. Repair notes
Storage in conductive bag Drop impact
1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials.
2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and
impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/or
damage to the printed-circuit board.
3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason
the adjustment point and installation screws should absolutely never be touched.
4) Laser beams may damage the eyes!
Absolutely never permit laser beams to enter the eyes!
Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.
NEVER look directly at the laser beam, and don't allow
contact with fingers or other exposed skin.
5) Cleaning the lens surface
If there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as used
for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cotton
swab should be used, taking care not to distort lens.
Pressure
Magnet
Pressure
How to hold the pick-up
Cotton swab
Conductive Sheet
6) Never attempt to disassemble the pick-up.
Spring has excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab.
(Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much
of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.
1-2
NOTES REGARDING COMPACT DISC PLAYER REPAIRS
1. Preparations
1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These components
are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components
can be damaged, and for that reason components should be handled with care.
2) The pick-up is composed of many optical components and other high-precision components. Care must be
taken, therefore, to avoid repair or storage where the temperature or humidity is high, where strong magnet-
ism is present, or where there is excessive dust.
2. Notes for repair
1) Before replacing a component part, first disconnect the power supply lead wire from the unit
2) All equipment, measuring instruments and tools must be grounded.
3) The workbench should be covered with a conductive sheet and grounded.
When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This is
because there is the possibility of damage by static electricity.)
4) To prevent AC leakage, the metal part of the soldering iron should be grounded.
5) Workers should be grounded by an armband (1 M)
6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent stat-
ic electricity changes in the clothing to escape from the armband.
7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin.
Armband
Resistor
(1 M)
Resistor
Conductive
(1 M)
Sheet
1-3
ESD PRECAUTIONS
Electrostatically Sensitive Devices (ESD)
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components
commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated
circuits and some field-effect transistors and semiconductor chip components. The following techniques should
be used to help reduce the incidence of component damage caused by static electricity.
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off
any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a
commercially available discharging wrist strap device, which should be removed for potential shock reasons
prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surface
such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can
generate electrical charges sufficient to damage ESD devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD
devices.
6. Do not remove a replacement ESD device from its protective package until immediately before you are
ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together by
conductive foam, aluminum foil or comparable conductive materials).
7. Immediately before removing the protective material from the leads of a replacement ESD device, touch the
protective material to the chassis or circuit assembly into which the device will by installed.
CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER
SAFETY PRECAUTIONS.
8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motion
such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate
static electricity sufficient to damage an ESD device).
CAUTION. GRAPHIC SYMBOLS
THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, IS
INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED
"DANGEROUS VOLTAGE" THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF
ELECTRIC SHOCK.
THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE
SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE
LITERATURE.
1-4
SERVICE INFORMATION FOR EEPROM
POWER ON
FLD no disc status
DETECT NEW EEPROM
Remote control (OPTION EDIT SCREEN)
`PAUSE'-->1--> 4-->7-->2
NAME HEX HEX HEX HEX HEX
LGEMK LGEHK LGEML LGERA LGESL
OP0 F9 F9 F9 F9 F9
FLD `OP0-xx.... OP1 00 00 00 00 00
OP2 B0 A0 A4 B0 A4
OP3 2D BD BD DD BD
OP4 00 00 00 00 00
OP5 81 01 01 11 21
Move to appropriate position and OP6 A0 A0 A0 A0 A0
make changes with remote control OP7 00 00 00 00 00
`REPEAT / PLAY / BWD SKIP / OP8 10 10 10 10 10
FWD SKIP' OP9 00 00 00 00 00
Press `PAUSE' key
FLD `write ok'
Press `POWER' key once
Completed
1-5
PROGRAM UPDATE GUIDE
1. HOW TO UPDATE AUDIO_MICOM(DVD) PROGRAM
Download Program file name is `Model name'_'Date'.hex (ex. XB64_0909280.hex)
--> If your PC has Water Wall, you have to release a code before remove a USB.
Caution:
Don't do anything (remove a USB, change a function, power off) while a program is downloading.
1. At USB function, insert a USB.
2. Then you can see a picture from TV.
3, "UPGRADE" is displayed from LCD. 4. After completed, set is automatically power off.
1-6
2. HOW TO UPDATE DVD PROGRAM
Download Program file name is `LG'_`Model name'_'Date'.ROM (Ex: LG_XB64ld1_0911280.ROM).
--> If your PC has Water Wall, you have to release a code before remove a USB.
Caution:
Don't do anything (remove a USB, change a function, power off) while a program is downloading.
1. At USB function, insert a USB.
2. Then you can see a picture from TV.
3, After completed you can see a picture like figure.
1-7
4. When `NO USB' is displayed on the TV, download is completed. And power off.
5. After power on, press "SETUP" key at USB function.
Move a cursor to "16:9"(DISPLAY -> TV Aspect -> 16:9 ).
Press "1397139" + Enter key.
Then system information is displayed.
* If system information is not displayed, retry several times.
(L) (R)
(Down)
6. After finish #5, press "PAUSE" key.
7. Unplug power cord and plug after about 5 seconds. Then download is completed.
8. After power on, a picture to select a language is displayed. Select a language that you want. And press ENTER.
1-8
SPECIFICATIONS