LG RCS606F User manual

Mini Hi-Fi System
SERVICE MANUAL
MODEL: RCT606
(RCT606, RCS606F/W)
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”
IN THIS MANUAL.
MODEL: RCT606 (RCT606, RCS606F/W)SERVICE MANUAL
P/NO : AFN74972247 FEBRUARY, 2011
Website http://biz.lgservice.com
Internal Use Only

CONTENTS
SECTION 1 ........ GENERAL
SECTION 2 ........ CABINET & MAIN CHASSIS
SECTION 3 ........ ELECTRICAL
SECTION 4 ........ REPLACEMENT PARTS LIST
1-1

SECTION 1
SUMMARY
CONTENTS
SERVICING PRECAUTIONS................................................................................................................... 1-3
ESD PRECAUTIONS.................................................................................................................................. 1-5
SERVICE INFORMATION FOR EEPROM .......................................................................................... 1-6
PROGRAM DOWNLOAD GUIDE........................................................................................................... 1-7
SPECIFICATIONS ..................................................................................................................................... 1-10
1-2

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
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.
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.
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.
Storage in conductive bag Drop impact
NEVER look directly at the laser beam, and don’t allow
contact with fingers or other exposed skin.
Magnet
How to hold the pick-up
Conductive Sheet
Cotton swab
Pressure
Pressure
1-3
SERVICING PRECAUTIONS

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 MΩ)
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.
Resistor
(1 MΩ)Conductive
Sheet
Resistor
(1 MΩ)
Armband
1-4

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.
1-5
ESD PRECAUTIONS

POWER ON
FLD no disc status
Remote control ‘ ’ + Front ‘STOP’
push same timing during 5s
FLD ‘OP-0….
Move to appropriate position and
make changes with remote control.
( , , /■ , REPEAT )
Press STOP key
FLD ‘write ok’
Remote control ‘ ’ +
Front ‘STOP’ push same timing
FLD ‘E2P CLR’
Completed
NAME
OP0
OP1
OP2
OP3
OP4
OP5
OP6
OP7
OP8
OP9
DETECT NEW EEPROM
(OPTION EDIT SCREEN)
HEX
05
00
00
00
00
69
90
05
90
08
1-6
SERVICE INFORMATION FOR EEPROM

1. AUDIO PROGRAM
Download program file name must be RCT606_YYMMDDX.HEX
If security program (Water Wall) is activated on your PC, you must save the file to the usb storage
device and disable the security software, then download the file to your set.
Caution: When downloading the file, you should neither unplug the usb device, change to the other
function, nor power off the device. Usb device must be unplugged when the downloading
process is completed.
ON VFD DISPLAY SCREEN
NO USB
↓← Insert usb device at usb function
READ
↓
FIRMWARE
↓
WRITE 00 .. 100
↓
UPDATED
↓
POWER OFF AUTOMATICALLY ←
When completed, remove usb device.
1-7
PROGRAM DOWNLOAD GUIDE

2. CD PROGRAM
Download program file name must be HD003_DATE_00.BIN
If security program (Water Wall) is activated on your PC, you must save the file to the usb storage
device and disable the security software, then download the file to your set.
Caution: When downloading the file, you should neither unplug the usb device, change to the other
function, nor power off the device. Usb device must be unplugged when the downloading
process is completed.
ON VFD DISPLAY SCREEN
NO USB
↓← Insert usb device at usb function
READ
↓
FIRMWARE
↓
FINISH
↓
UPDATED
↓
POWER OFF AUTOMATICALLY ←
When completed, remove usb device .
1-8

3. BEAT BOX PROGRAM
Download program file name must be BEAT_BIN_DATE_00.BIN
If security program (Water Wall) is activated on your PC, you must save the file to the usb storage
device and disable the security software, then download the file to your set.
Caution: When downloading the file, you should neither unplug the usb device, change to the other
function, nor power off the device. Usb device must be unplugged when the downloading
process is completed.
ON VFD DISPLAY SCREEN
NO USB
↓← Insert usb device at usb function
READ
↓
FIRMWARE
↓
FINISH
↓
UPDATED
↓
POWER OFF AUTOMATICALLY ←
When completed, remove usb device .
1-9

SPECIFICATIONS
• GENERAL
Power requirements Refer to main label
Power consumption Refer to main label
Dimensions (W x H x D) 285 x 350 x 380 mm without foot
Net Weight (Approx.) 6.6 kg
Operating temperature 5 °C to 35 °C (41 °F to 95 °F)
Operating humidity 5 % to 90 %
Bus Power Supply USB DC 5 V 500 mA
iPod DC 5 V 1 A
• INPUTS/ OUTPUTS
ANALOG AUDIO IN 1.2 Vrms (1 kHz, 0 dB), 600 Ω, RCA jack (L, R) x 1
PORT. IN 0.5 Vrms (3.5 mm stereo jack)
ANALOG AUDIO OUT 800 mVrms (1 kHz, 0 dB), 600 Ω, RCA jack (L, R) x 1
• TUNER
FM Tuning Range 87.5 to 108.0 MHz or 87.50 to 108.00 MHz
AM Tuning Range 522 to 1 620 kHz, 520 to 1 710 kHz or 522 to 1 710 kHz
• AMPLIFI ER
Stereo mode 200 W + 200 W (4 Ωat 1 kHz)
Surround mode Front 200 W + 200 W (4 Ωat 1 kHz, THD 10 %)
Subwoofer 200 W (4 Ωat 60 Hz, THD 10 %)
• CD
Frequency Response 40 to 20 000 Hz
Signal-to-noise ratio 75 dB
Dynamic range 80 dB
• SPEAKERS
Front speaker
Type 2 Way 2 speaker
Impedance 4 Ω
Rated Input Power 200 W
Max. Input power 400 W
Net Dimensions (W x H x D) 239 x 400 x 335 mm
Net Weight 5 kg
Passive subwoofer
Type 1 Way 1 speaker
Impedance 4 Ω
Rated Input Power 200 W
Max. Input power 400 W
Net Dimensions (W x H x D) 272 x 333 x 365 mm
Net Weight 6 kg
•Design and specifications are subject to change without notice.
1-10

SECTION 2
CABINET & MAIN CHASSIS
CONTENTS
DISASSEMBLY AND ASSEMBLY FOR MECHANISM DECK (CDM-H1803) ........................ 2-2
1. ORDER OF DISASSEMBLY FOR MECHANISM DECK.......................................................................... 2-2
2. ORDER OF ASSEMBLY FOR MECHANISM DECK................................................................................ 2-6
EXPLODED VIEWS................................................................................................................................... 2-11
1. CABINET AND MAIN FRAME SECTION (RCT606) .............................................................................. 2-11
2. MECHANISM DECK SECTION (CDM-H1803)....................................................................................... 2-13
3. PACKING ACCESSORY SECTION ....................................................................................................... 2-15
4. SPEAKER SECTION .............................................................................................................................. 2-16
2-1

2-2
DISASSEMBLY AND ASSEMBLY FOR MECHANISM DECK (CDM-H1803)
1. ORDER OF DISASSEMBLY FOR MECHANISM DECK
Figure 1
1) Disassemble the Cover Guide Disc.
2
1
Figure 3
3) Pull up the Holder 1 to completely disassemble the
Tray Loading Assy from the Base Main Assy.
3
2
1
Figure 2
2) Disassemble the Loading FFC from the Main PCB
Assy.
Turn the Gear in OPEN direction as shown in Figure 2
to take out the Tray Loading Assy in 3 direction.

2-3
ORDER OF DISASSEMBLY FOR MECHANISM DECK
2
1
4) Loosen the screw to pull up and disassemble the
Tray Disc.
Figure 4
6) Disassemble the Gear Tray, Tray Motor Assy and
Loading PCB Assy from the Tray Loading.
Figure 6
5) Loosen the screw to pull up and disassemble the
Gear Tray CAM.
Figure 5

2-4
ORDER OF DISASSEMBLY FOR MECHANISM DECK
1
2
3
Figure 7
9) Push the Guide UD in direction 1 to disassemble it
from the Base Main.
8) Disassemble each gear part, Clamp Disc, Clamp
Magnet and Cover Plate from the Base Main.
Disassemble the Loading Motor Assy by being careful
of the hook on the surface of the Base Main.
7) Disassemble the Harness Cable from the Base
Main.
Disassemble the Base Sled Assy from the Base Main
by referring to Figure.
3
2
1
Figure 8
2
1
Figure 9

2-5
ORDER OF DISASSEMBLY FOR MECHANISM DECK
1
2
3
4
10) Use a solder to remove the Motor Jump Wire from
the Main PCB Assy and then disassemble the FFC
Cable.
Loosen the screw to disassemble the Main PCB Assy.
Figure 10

2-6
2. ORDER OF ASSEMBLY FOR MECHANISM DECK
1) Assemble the Loading Motor Assy to the Base
Main.
(When assembling the Motor Assy, use the hook on
the surface of the Base Main to preassemble, and then
tighten the screws.)
Figure 1
Figure 2
1
2
3
2) Set the Guide UD on the Base Main.
After setting the part, push it in direction 3.

2-7
3) Set the Gear Loading 1 and Gear Pulley 2 on the
Base Main.
Hang the belt between the Gear Pulley and Motor Pul-
ley.
Assemble the Clamp Disc, Clamp Magnet and Cover
Plate to the Base Main.
4) After setting the Gear Main 2, Gear Pu Up 3 and Gear
Pu Down 4 on the Base Main, tighten the screws.
After assembling the Gear Main, align the location as
shown in Figure.
ORDER OF ASSEMBLY FOR MECHANISM DECK
1
2
Figure 3
Figure 4
2
3
4
1

2-8
ORDER OF ASSEMBLY FOR MECHANISM DECK
1
2
Figure 5
4
5
3
2
1
Figure 6
5) After setting the Main PCB Assy on the Base Main,
tighten the screw.
(Set the part accurately on the hook)
Solder the Motor Jump Wire on the PCB set on the
Base Main.
6) Set the Base Sled Assy on the Base Main.
(When setting the part, assemble with the CAM part of
the Guide UD inserted in two locations of the Boss of
Frame UD)
Align the FFC to the Guide and connect the Harness
Cable.

2-9
Figure 7
2
1
Figure 8
7) After setting the Gear Tray, Tray Motor Assy and
Loading PCB Assy on the Tray Loading, tighten the
screw.
8) Assemble the Gear Tray CAM on the Tray Loading
and set the Tray Disc.
(When assembling, check the location of the Gear Tray
CAM and Tray Disc as shown in the Figure)
ORDER OF ASSEMBLY FOR MECHANISM DECK