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.
Storage in conductive bag
Drop 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.
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
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.
1-3
Pressure
Page 5
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 magnetism 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 static 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 MΩ)
Resistor
(1 MΩ)
Conductive
Sheet
1-4
Page 6
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.
1-5
Page 7
SERVICE INFORMATION FOR EEPROM
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’
DETECT NEW EEPROM
(OPTION EDIT SCREEN)
NAME
OP0
OP1
OP2
OP3
OP4
OP5
OP6
OP7
OP8
OP9
HEX
05
00
00
00
00
69
90
07
D0
09
Remote control ‘’ +
Front ‘STOP’ push same timing
FLD ‘E2P CLR’
Completed
1-6
Page 8
PROGRAM DOWNLOAD GUIDE
1. AUDIO PROGRAM
Download program file name must be MCV1306_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
Page 9
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
Page 10
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
Page 11
SPECIFICATIONS
• GENERAL
Power requirements Refer to main label
Power consumption Refer to main label
Dimensions (W x H x D) 285 x 388 x 351 mm without foot
Net Weight (Approx.) 7.2 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), 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), 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 270 W + 270 W (4 Ω at 1 kHz)
Surround mode Front 270 W + 270 W (4 Ω at 1 kHz, THD 10 %)
Rear 150 W + 150 W (8 Ω at 1 kHz, THD 10 %)
Subwoofer1 270 W (4 Ω at 60 Hz, THD 10 %)
Subwoofer2 270 W (4 Ω at 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 270 W
Max. Input power 540 W
Net Dimensions (W x H x D) 263 x 460 x 358 mm
Net Weight 7.3 kg
Rear speaker
Type 2 Way 2 speaker
Impedance 8 Ω
Rated Input Power 150 W
Max. Input power 300 W
Net Dimensions (W x H x D) 198 x 338 x 258 mm
Net Weight 3.1 kg
Passive subwoofer 1/ 2
Type 1 Way 1 speaker
Impedance 4 Ω
Rated Input Power 270 W
Max. Input power 540 W
Net Dimensions (W x H x D) 347 x 457 x 355 mm
Net Weight 8.4 kg
• Design and specifications are subject to change without notice.
1-10
Page 12
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
DISASSEMBLY AND ASSEMBLY FOR MECHANISM DECK (CDM-H1803)
1. ORDER OF DISASSEMBLY FOR MECHANISM DECK
1) Disassemble the Cover Guide Disc.
Figure 1
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
Figure 2
1
1
3) Pull up the Holder 1 to completely disassemble the
Tray Loading Assy from the Base Main Assy.
2
Figure 3
2-2
Page 14
ORDER OF DISASSEMBLY FOR MECHANISM DECK
4) Loosen the screw to pull up and disassemble the
1
2
Figure 4
Tray Disc.
5) Loosen the screw to pull up and disassemble the
Gear Tray CAM.
Figure 5
Figure 6
6) Disassemble the Gear Tray, Tray Motor Assy and
Loading PCB Assy from the Tray Loading.
2-3
Page 15
ORDER OF DISASSEMBLY FOR MECHANISM DECK
3
2
1
Figure 7
7)
Disassemble the Harness Cable from the Base Main.
Disassemble the Base Sled Assy from the Base Main
by referring to Figure.
1
2
3
1
2
Figure 8
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.
Figure 9
9) Push the Guide UD in direction 1 to disassemble it
from the Base Main.
2-4
Page 16
ORDER OF DISASSEMBLY FOR MECHANISM DECK
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.
1
2
4
3
Figure 10
2-5
Page 17
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
2) Set the Guide UD on the Base Main.
After setting the part, push it in direction 3.
2
3
1
Figure 2
2-6
Page 18
ORDER OF ASSEMBLY FOR MECHANISM DECK
3) Set the Gear Loading 1 and Gear Pulley 2 on the
2
1
Figure 3
Base Main.
Hang the belt between the Gear Pulley and Motor Pulley.
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.
1
2
4
3
Figure 4
2-7
Page 19
ORDER OF ASSEMBLY FOR MECHANISM DECK
1
1
2
2
3
Figure 5
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.
5
4
Figure 6
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.
2-8
Page 20
ORDER OF ASSEMBLY FOR MECHANISM DECK
1
2
Figure 7
7) After setting the Gear Tray, Tray Motor Assy and Load-
ing PCB Assy on the Tray Loading, tighten the screw.
Figure 8
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)
2-9
Page 21
ORDER OF ASSEMBLY FOR MECHANISM DECK
1
2
3
Figure 9Figure 10
9) Assemble the Tray Loading Assy on the Base Main
Assy as shown in the Figure.
After assembling, insert the Loading FFC to the 5 Pin
Wafer of Main PCB Assy.
10) After setting the Cover Guide Disc, tighten the screw.
2-10
Page 22
EXPLODED VIEWS
1. CABINET AND MAIN FRAME SECTION (MCV1306)
268
464
NOTES) THE EXCLAMATION POINT WITHIN AN
EQUILATERAL TRIANGLE IS INTENDED
TO ALERT THE SERVICE PERSONNEL
TO THE PRESENCE OF IMPORTANT
SAFETY INFORMATION IN SERVICE
LITERATURE.
A49
CABLE1
A42
H
iPod
464
464
264
VOLUME
A43
CABLE7
464
463
CABLE6
464
VFD
464
269
270
464
464
E
464
J
F
463
I
269
464
C
D
A26
SMPS
492
A47
A
B
251
255B
255A
255C
A45
USB
CABLE2
463
265
266A
267
464
A44
464
463
C
H
D
G
464
G
266
MAIN
464
A46
F
B
CN102
J
E
CN101
271
274
465
272
A
I
300
274
464
2-112-12
Page 23
2. MECHANISM DECK SECTION (CDM-H1803)
MEMO
A26
153
443
159
173
153A
443
416
151
443
416
155
156
422
182
177
001
166
167
164
417
417
162
163
172
165
422
175
440
421
012
002
003
180
137
421
012
012B
012A
A02
A01
010
421
012
012B
421
012
2-132-14
Page 24
3. PACKING ACCESSORY SECTION
801 Owner’s Manual
AA
AA
A
A
808 Battery
910 Cover
900 Remote Control
803 Packing
804 Bag
824 AM Loop Antenna
825 FM Wire Antenna
802 Box
2-15
Page 25
4. SPEAKER SECTION
4-1. FRONT SPEAKER (MCS1306F)
A60L
A60R
2-16
Page 26
4-2. REAR SPEAKER (MCS1306S)
A80L
A80R
2-17
Page 27
4-3. PASSIVE SUBWOOFER (MCS1306W)
A90
2-18
Page 28
SECTION 3 ELECTRICAL
CONTENTS
TRAINING MASTER ................................................................................................................................... 3-2
1. NO SOUND FROM SPEAKERS ............................................................................................................ 3-2
2. NO SOUND IN AUX FUNCTION ............................................................................................................ 3-3
3. NO SOUND IN PORT. IN FUNCTION ................................................................................................... 3-4
4. NO SOUND IN IPOD FUNCTION .......................................................................................................... 3-5
5. NO SOUND IN AM/FM FUNCTION ....................................................................................................... 3-6
6. NO SOUND IN CD FUNCTION .............................................................................................................. 3-7
7. NO SOUND IN USB FUNCTION ............................................................................................................ 3-9
8. NO POWER .......................................................................................................................................... 3-10
ONE POINT REPAIR GUIDE ................................................................................................................. 3-11
1. NO POWER .......................................................................................................................................... 3-11
2. NO BOOTING WHEN POWER ON THE SET ..................................................................................... 3-13
3. VFD IS NOT DISPLAYED WHEN POWER ON THE SET ................................................................... 3-14
4. NO OPERATION OF MD ..................................................................................................................... 3-15
5. NO SOUND .......................................................................................................................................... 3-21
1. POWER SUPPLY ON SMPS BOARD ................................................................................................. 3-29
2. SYSTEM PART .................................................................................................................................... 3-33
3. NO AUDIO PART ................................................................................................................................. 3-34
4. DIGITAL AUDIO AMP CHECK ............................................................................................................. 3-39
1. MAIN P.C.BOARD ................................................................................................................................ 3-81
5. USB P.C.BOARD .................................................................................................................................. 3-91
If “ERROR”message is displayed, make sure firmly to put a
iPod or a iPhone on the docking system on the top of the unit.
When the battery of a iPod or a iPhone is fully discharged, the
unit can not detect IPOD function, Please wait for a moment
and then it will work after charging a little.
The volume level LEDs around the master volume
will be turned on more and more
while turning it clockwise for the volume up.
Refer to a device’s instruction manual
and then check if there is sound output
from it connecting another audio system.
Is there any sound from iPod or iPhone?
NO
YES
Are the sound spectrum level LED’s
on the left and right side of the front panel
being changed up and down
according to the sound input gain?
NO
The sound spectrum level LED’s will be turned on/off
repeatedly at regular intervals. A speaker cable might
be short-circuited with the chassis ground.
Be careful not to be shorted each other.
YES
Are the speaker cables connected correctly
between the speaker terminals on the unit
and the speakers?
NO
Make sure to connect the cables
to each specified connector tightly on the unit.
YES
The sound is output from the speakers.Sound OK
YES
3-5
Page 33
TRAINING MASTER
5. NO SOUND IN AM/FM FUNCTION
Does the customer select correctly
the AM/FM function he or she wants to listen to?
NO
Make sure to connect AM/FM antennas
on the rear panel of the unit.
YES
Is “AM or FM” displayed on VFD?
NO
Make sure to select AM or FM function
pressing the FUNC button.
YES
After tuning a desired channel
using the TUNING± button,
is the sound quality good to listen to the music?
NO
To prevent noise pickup, keep the AM Loop
antenna away from the unit and other components.
Be sure to fully extend the FM wire antenna. After
connecting the FM wire antenna, keep it horizontal.
YES
Is the signal strength of the radio station too week?Make sure to tune the station manually.
NO
YES
Are the sound spectrum level LED’s
on the left and right side of the front panel
being changed up and down
according to the sound input gain?
YES
Are the speaker cables connected correctly
between the speaker terminals on the unit
and the speakers?
YES
The sound is output
from the speakers.
YES
Sound OK
NO
NO
The sound spectrum level LED’s will be turned on/off
repeatedly at regular intervals. A speaker cable might
be short-circuited with the chassis ground.
Be careful not to be shorted each other.
Make sure to connect the cables to each specified
connector tightly on the unit.
3-6
Page 34
TRAINING MASTER
6. NO SOUND IN CD FUNCTION
Does the customer select correctly
the CD function he or she wants to listen to?
NO
Make sure to put on a CD disc on the tray.
YES
Is a CD disc put on the tray correctly?Make sure to insert the CD disc upside down.
NO
YES
Does the unit display “NO DISC” on VFD
when a disc is inserted on the tray?
NO
Place the disc with the label
or printed side facing upwards.
YES
Does the customer use
the supported mp3 or WMA music files on the disc?
NO
Check the playable disc.
Make sure that the file extensions
are “.mp3” or “.wma”.
YES
When the unit searches music files in a CD disc,
are the following messages displayed on VFD?
“SELECTED” “TRACKING #” and “TIME”
YES
After selecting a track number using the SCAN or
DISC# button, press PLAY button and turn the master
volume clockwise for the volume up.
YES
Is the sound quality good to listen to the music?
YES
Are the sound spectrum level LED’s
on the left and right side of the front panel
changed up and down
according to the sound input gain?
YES
NO
NO
NO
NO
Make sure to check
the supported MP3/WMA music file on the CD disc.
Refer to the owner’s manual.
The volume level LEDs around the master volume
will be turned on more and more
while turning it clockwise for the volume up.
Make sure to clean CD discs with a commercially
available cleaner. If the surface of the disc is polluted
or scratched, the sound quality can become bad
or the customer can not listen to the music.
The sound spectrum level LED’s will be turned on/off
repeatedly at regular intervals. A speaker cable
might be short-circuited with the chassis ground.
Be careful not to be shorted each other.
3-7
Page 35
YES
TRAINING MASTER
Are the speaker cables connected correctly
between the speaker terminals on the unit
and the speakers?
YES
YES
The sound is output from the speakers.Sound OK
NO
NO
NO
NO
Make sure to connect the cables
to each specified connector tightly on the unit.
3-8
Page 36
TRAINING MASTER
7. NO SOUND IN USB FUNCTION
Does the customer select correctly
the USB function he or she wants to listen to?
YES
Is “USB” displayed on VFD?
YES
Does the unit display “SELECTED” on VFD
when a USB is inserted into the USB port?
YES
Does the customer use the supported
mp3 or WMA music files on the disc?
YES
NO
NO
NO
NO
Make sure to insert a USB on the USB ports
on the bottom of the unit.
Make sure to select the USB function
pressing the CD/USB button.
When “No USB” is displayed,
make sure that the customer uses the recommended
USB which support USB2.0 or USB1.1.
Check if it is the playable disc or not.
Make sure that the file extensions are
“.mp3”or “.wma”.
When the unit searches music files in a USB,
are the following messages displayed on VFD?
“SELECTED” “TRACKING #” and “TIME”
YES
After selecting a track number using the SCAN button,
press PLAY button and turn the master volume
clockwise for the volume up.
YES
Are the sound spectrum level
on the left and right side of the front panel
being changed up and down
according to the sound input gain?
YES
Are the speaker cables connected correctly
between the speaker terminals on the unit
and the speakers?
YES
NO
NO
NO
NO
Make sure to check the compatible USB device
and the supported MP3/WMA music file requirement.
Refer to the owner’s manual.
The volume level LEDs around the master volume
will be turned on more and more
while turning it clockwise for the volume up.
The sound spectrum level will be turned on/off
repeatedly at regular intervals. A speaker cable
might be short-circuited with the chassis ground.
Be careful not to be shorted each other.
Make sure to connect the cables
to each specified connector tightly on the unit.
3-9
Page 37
YES
TRAINING MASTER
The sound is output from the speakers.Sound OK
8. NO POWER
Is the power cord plugged
into a electrical outlet?
Does the Standby LED light
YES
in red color?
YES
NO
NO
NO
Make sure to plug the power cord of the unit
into a electrical outlet.
If the customer can not see the red light
on the front panel, the SMPS might have any problem.
Please solve the problem
referring to the service manual.
Is the Standby LED turned off
after pressing the Power button
on the remote control?
YES
Are the messages displayed
in the following order on VFD?
“HELLOW” “VOLUME 15” “FUNCTION”
YES
Is there any sound
from the speakers each input function?
YES
Power & Sound OK
NO
NO
NO
Replace the batteries with new ones
if the remote control doesn’t work.
The SMPS might be not able to supply the power
to drive the VFD.
Refer to the service manual to fix it.
Make sure to connect speaker cables.
3-10
Page 38
ONE POINT REPAIR GUIDE
1. NO POWER
If the unit doesn’t work by no power problem, repair the set according to the following
guide.
1-1. FUSE & BRIDGE DIODE
1-1-1. Solution
Please check and replace F901, BD901, TH901, TH903 on SMPS board.
1-1-2. How to troubleshoot (Countermeasure)
1) Check if the fuse F901 is open or short-circuit.
2) Check if the bridge diode DB901 is short-circuit by over current with a digital multi meter.
3) Check if the NTC thermistor TH901 and TH902 is normal or open.
1-1-3. Service hint (Any picture / Remark)
< F901 >
If F901 is not short-circuit,
replace it with a same
specifi cations one.
replace it with a new one.
< BD901 >
If BD901 is short-circuit,
< TH901, TH903 >
If TH901 or TH902 is open,
replace it with a new one.
3-11
Page 39
ONE POINT REPAIR GUIDE
NO POWER
If the unit doesn’t work by no power problem, repair the set according to the following
guide.
1-2. D951, ZD951
1-2-1. Solution
Please check and replace D951, ZD951 on SMPS board.
1-2-2. How to troubleshoot (Countermeasure)
1) Check the Anode-Cathod Voltage of D951 with a digital multi-meter, it is normally 0.2 ~ 0.3 V.
If it doesn’t have any voltage, it’s destroyed. Replace it with a new one.
2) Check if ZD951 is short-circuit.
If it is short-circuit, and then replace it with a new one.
1-2-3. Service hint (Any picture / Remark)
< SMPS schematic diagram >
3-12
Page 40
ONE POINT REPAIR GUIDE
2. NO BOOTING WHEN POWER ON THE SET
The set doesn’t work when press the power button on the front board or the remote
control.
2-1. FLASH MEMORY
2-1-1. Solution
Please check and replace IC101 on MAIN board.
2-1-2. How to troubleshoot (Countermeasure)
1) Check the 3.7VA to CN102, CN103, and CN104 in standby mode.
If there is no 3.7 VA, check the SMPS.
2) Check 5.6 V, 12 VA, FL+, FL- and 32 V when power on the set.
- If the set doesn’t work regardless of what the KEY1 changes high to low while pressing the power
button. X100 and X101 work normally but, if you can not power on the set, replace the IC101 with a new
one on the main board.
2-1-3. Service hint (Any picture / Remark)
w~yj{ys
OyX[`P
rlX
OX[P
XWW
O`UZ_ZWto¡P
XWX
OZYU^]_ro¡P
< Signal check point >
3-13
Page 41
ONE POINT REPAIR GUIDE
3. VFD IS NOT DISPLAYED WHEN POWER ON THE SET
When power on the set, any icons or characters on VFD are not displayed.
3-1. VFD
3-1-1. Solution
Please check and replace DIG301 on FRONT board.
3-1-2. How to troubleshoot (Countermeasure)
1) Check if 32 V, FL+ and FL- are output from SMPS to VFD via the MAIN board.
2) Check if the IC101 outputs VFD_RST, VFD_CLK, VFD_STB, and VFD_STB to the FRONT board.
3) Check if the VFD grid current amplifier circuit (Q301, Q303, Q304) on the FRONT board.
Check the drive signal to the transistor’s base.
If the control signals from VFD (TP302, TP303, TP304) isn’t output, replace VFD with a new one.
If the transistor doesn’t work, replace it.
When no sound output in the CD function, you can not listen to music reading data
from a CD disc if the servo motors in MD don’t work. This step is for checking the
SPINDLE MOTOR among them.
4-1. SPinDLE MOTOR
4-1-1. Solution
Please check and replace IC407, IC408 on MAIN board.
4-1-2. How to troubleshoot (Countermeasure)
1) Check the SPDO signal from Pin16 of IC407.
If no signal, check 3.3V(RF) and X402.
2) Check the SP- & SP+ from IC408 to CN405 for driving SPinDLE motor. It is about 3.6 Vp-p.
If no signal, check +1.8 V and +5 V for IC408.
3) Check if the FFC cable is solidly connected between CN405 and MD.
4) Check the MD.
If the sPindle motor is sort-circuit or has any trouble, it can not rotate CD discs.
Please check the function after changing another MD.
4-1-3. Service hint (Any picture / Remark)
G
ZU]} T
zwTGju[W\
z wRG Gju[W\
< Waveform of SP- & SP+
for driving SPinDLE motor >
zwR
YGGju[W\
zwT
XGGju[W\
< Signal check point >
pj[W_
3-15
Page 43
ONE POINT REPAIR GUIDE
NO OPERATION OF MD
When no sound output in the CD function, you can not listen to music reading data
from a CD disc if the servo motors in MD don’t work. This step is for checking the
SLED MOTOR among them.
4-2. SLED MOTOR
4-2-1. Solution
Please check and replace IC407, IC408 on MAIN board.
4-2-2. How to troubleshoot (Countermeasure)
1) Check the SLDO signal from Pin15 of IC407.
If no signal, check 3.3V(RF) and X402.
2) Check the SLED+ & SLED-from IC408 to CN405 for driving SPinDLE motor. It is about 2.9 Vp-p.
If no signal, check +1.8V and +5V for IC408.
3) Check if the FFC cable is solidly connected between CN405 and MD.
4) Check the MD.
If the sled motor is sort-circuit or has any trouble, it can not move the pickup module.
Please check the function after changing another MD.
4-2-3. Service hint (Any picture / Remark)
hG
YU`} T
zsTGju[W\
zwTGju[W\
z sRGGju[W\
zwRGGju[W\
< Waveform of SLED- & SLED+
for driving SLED motor >
zsR
[GGju[W\
zsT
ZGGju[W\
< Signal check point >
pj[W_
3-16
Page 44
ONE POINT REPAIR GUIDE
NO OPERATION OF MD
When no sound output in the CD function, you can not listen to music reading data
from a CD disc if the servo motors in MD don’t work. This step is for checking the
TRAY MOTOR among them.
4-3. TRAY MOTOR
4-3-1. Solution
Please check and replace IC407, IC408 on MAIN board.
4-3-2. How to troubleshoot (Countermeasure)
1) Check TUR+ & TUR-signals from Pin56 & 57 of IC501 to IC406.
If no signal, check +5 V to IC406.
2) Check TUR_M+ & TUR_M- from IC406 to CN405 for driving TRAY motor. It is about 3.8 Vp-p.
If no signal, check +5 V to IC406. If it has any trouble, replace it with a new one.
3) Check if the FFC cable is solidly connected between CN405 and MD.
4) Check the MD.
If the tray motor is sort-circuit or has any trouble, it can not rotate the tray.
Please check the function after changing another MD.
4-3-3. Service hint (Any picture / Remark)
hG
ZU_} T
{| ytRGGju[W\
{| ytTGju[W\
< Waveform of TUR_M±
for driving TRAY motor >
{|ytT
_GGju[W\
{|ytR
^GGju[W\
< Signal check point >
pj[W_
3-17
Page 45
ONE POINT REPAIR GUIDE
NO OPERATION OF MD
When no sound output in the CD function, you can not listen to music reading data
from a CD disc if the servo motors in MD don’t work. This step is for checking the
TRAY OPEN/CLOSE MOTOR among them.
4-4. TRAY OPEN / CLOSE MOTOR
4-4-1. Solution
Please check and replace IC407, IC408 on MAIN board.
4-4-2. How to troubleshoot (Countermeasure)
1) Check MOT_OPEN & MOT_CLOSE signals from Pin104 & 105 of IC501 to IC408.
If no signal, check +1.8 V & + 5 V to IC408.
2) Check LOAD± from IC406 to CN405 for driving the tray open / close motor. It is about 3.85 Vp-p.
If no signal, check +5 V to IC406. If it has any trouble, replace it with a new one.
3) Check if the FFC cable is solidly connected between CN405 and MD.
4) Check the MD.
If the tray motor is sort-circuit or has any trouble, it can not open or close the tray.
Please check the function after changing another MD.
4-4-3. Service hint (Any picture / Remark)
hG
ZU_\} T
tv{ vwlu
tv{ jsvzl
svT Gju[W[
svRGGju[W[
< Waveform
for driving TRAY open / close motor >
ju[W\
svR
XZGGju[W\
tv{vwlu
^GGpj[W_
tv{jsvzl
]GGpj[W_
svT
XYGGju[W\
< Signal check point >
pj[W_
3-18
Page 46
ONE POINT REPAIR GUIDE
NO OPERATION OF MD
When no sound output in the CD function, you can not listen to music reading data
from a CD disc if the pickup module in MD doesn’t work. This step is for checking the
LASER TRACKING ACTUATOR.
4-5. LASER TRACKING ACTUATOR
4-5-1. Solution
Please check and replace IC407, IC408 on MAIN board.
4-5-2. How to troubleshoot (Countermeasure)
The tracking actuator makes the laser beam be positioned in the center of a track on CD disc.
1) Check the TRD signal from Pin14 of IC407.
If no signal, check 3.3 V(RF) and X402.
2) Check T- & T+ from IC408 to CN404 for driving the tracking actuator.
If no signal, check +1.8 V and +5 V for IC408.
3) Check if the FFC cable is solidly connected between CN404 and MD.
4) Check the MD.
If the pickup module has any trouble, it can not move the laser beam on the left or right side.
Please check the function after changing another MD.
4-5-3. Service hint (Any picture / Remark)
{TGju[W[
{RGGju[W[
< Waveform of T±
for driving TRACKING actuator >
ju[W[
{R
ZG Gju[W[
{T
YG Gju[W[
< Signal check point >
3-19
Page 47
ONE POINT REPAIR GUIDE
NO OPERATION OF MD
When no sound output in the CD function, you can not listen to music reading data
from a CD disc if the pickup module in MD doesn’t work. This step is for checking the
LASER FOCUSING ACTUATOR.
4-6. LASER FOCUSING ACTUATOR
4-6-1. Solution
Please check and replace IC407, IC408 on MAIN board.
4-6-2. How to troubleshoot (Countermeasure)
The focusing actuator makes the laser beam keep a regular interval with the surface of a CD disc.
1) Check the FOD signal from Pin13 of IC407.
If no signal, check 3.3 V(RF) and X402.
2) Check F- & F+ from IC408 to CN404 for driving the focusing actuator.
If no signal, check +1.8 V and +5 V for IC408.
3) Check if the FFC cable is solidly connected between CN404 and MD.
4) Check the MD.
If the pickup module has any trouble, it can not move the laser beam on the top or bottom side.
Please check the function after changing another MD.
4-6-3. Service hint (Any picture / Remark)
{T
mRGGju[W[
mT Gju[W[
< Waveform of TR±
for driving FOCUSING actuator >
ju[W[
mR
[G Gju[W[
mT
XG Gju[W[
< Signal check point >
3-20
Page 48
ONE POINT REPAIR GUIDE
5. NO SOUND
There is no sound output in the CD FUNCTION, repair the set according to the following guide.
5-1. IN THE CD FUNCTION
5-1-1. Solution
Please check and replace IC501, IC602, IC801 on MAIN board.
5-1-2. How to troubleshoot (Countermeasure)
1) Check CD_BCK, CD_LRCK, & CD_DATA signals from IC407 to IC501.
If no signal, check if the RF & servo signals from MD is entered to IC407.
Refer to the “No operation of MD” guide on Item 4.
2) Check the following I2S signal flow. < I2S audio signal Interface >
- DAC_DATA : IC501_83Pin --> R817 next to IC01 --> IC602_6/9Pin
- DAC_MCLK : IC501_86Pin --> R818 next to IC801
If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to
the IC is distorted or no signal, replace it with a new one.
3) Check if “Digital audio AMP block” on Item 5-2 is normal.
5-1-3. Service hint (Any picture / Remark)
{T
IC407
BU9543KV
IC501
MLC9800
BEAT_ DATADAC_MCLK
IC801
FS502B
BEAT BOX
DAC_BCK
DAC_LRCK
IC602
PS9850
PWM
< I2S Signal Flow >
AMP IC
TAS5631
khjtjsrGOX]U`Zto¡P
khjijrGOXU[to¡ P
khjkh{h
khjsyjrGO[[UXro¡ P
< Waveform of I2S audio interface signals >
3-21
Page 49
ONE POINT REPAIR GUIDE
NO SOUND
There is no sound output by DIGITAL AUDIO AMP DAMAGE, repair the set according
to the following guide.
5-2. BY DIGITAL AUDIO AMP DAMAGE (IN ALL FUNCTIONS)
5-2-1. Solution
Please check and replace IC701, IC702, IC703 on MAIN board.
5-2-2. How to troubleshoot (Countermeasure)
1) Check FL±, FR±, RL±, RR±, SW1±, & SW2± signals from IC602 to IC701, 702 & 703 each input
function.
If no signal, check if I2S audio signals are entered to IC602.
Refer to “I2S audio signal interface” on Item 5-1.
2) Check PVDD_48V.
If 48 V is abnormal, check the SMPS.
3) Check +12 for driving the gate of AMP IC.
a. All the powers are normal, but if +12 V is low, there is possible for AMP IC to be damaged.
b. Remove a ferrite bead among FB703, FB707 and FB713 one by one.
When removed a ferrite bead, if +12 V is recovered, the IC connected to it was damaged.
c. Replace the IC with a new one.
4) Check the impedance between SPK+ & GND and SPK- & GND.
a. If the impedance is 0 Ω, the IC must be damaged.
b. After removing the heat sink, replace it with a new one.
Comments !!
If a AMP IC among three is damaged, “AMP_PDN” to R103 changes HIGH to LOW at regular intervals.
The sound is not output by AMP power down function.
5-2-3. Service hint (Any picture / Remark)
pj^WXpj^WYpj^WZ
ilh k
< Signal check point >
yXWZOhtwwkuP
khjkh{h
pjXWX
3-22
Page 50
ONE POINT REPAIR GUIDE
NO SOUND
There is no sound output in the USB FUNCTION, repair the set according to the following guide.
5-3. IN THE USB FUNCTION
5-3-1. Solution
Please check and replace IC501, IC504 on MAIN board & IC3U01 on USB board.
5-3-2. How to troubleshoot (Countermeasure)
1) Check +5VU to USB board.
If the USB LEDs are turned on, the voltage is okay, if so not, check +5.6 V to Pin8 of CN602.
2) Check USB D± from main board to USB board.
a. Check USB_HUB_DN/DP signals to IC501(Pin116, 117)
b. Check USB1/2_DN/DP signals from IC504 to CN602 (Pin10, 11, 13, & 14)
If there is any trouble, check the power for each IC. The power is normal but , if the signal waveform to
the IC is distorted or no signal, replace it with a new one.
3) Check if “Digital audio AMP block” on item 5-2 is normal.
5-3-3. Service hint (Any picture / Remark)
{T
IC504
USB2512B
ADC_D ATADAC_MCLK
IC501
MLC9800
DAC_DAT ADAC_MCLK
IC801
FS502B
BEAT BOX
< USB function signal fl ow >
USB_D
DAC_BCK
DAC_L RCK
BEAT_ DATA
USB
Board
IC602
PS9850
USB
AMP IC
TAS5631
PWM
kT G XWG Gju]WY
kRGGGXXGGju]WY
< Waveform of USB D± signal >
3-23
Page 51
ONE POINT REPAIR GUIDE
NO SOUND
There is no sound output in the AUX FUNCTION, repair the set according to the following guide.
5-4. IN THE AUX FUNCTION
5-4-1. Solution
Please check and replace IC202 on MAIN board.
5-4-2. How to troubleshoot (Countermeasure)
1) Check AUX_L/R signals to IC202 (Pin7, 8).
2) Check if ADC_BCK, ADC_LRCK, & DAC_MCLK are entered from IC501 to IC202.
3) Check if ADC_DATA is entered from IC202 to IC501.
If no signal, check +5 V & +3.3 V(ADC) for IC202. If is NG, replace it a new one.
4) Check the following I2S signal flow from IC501 to IC602. (Refer to Item 5-1.)
If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to
the IC is distorted or no signal, replace it with a new one.
5) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 5-2.
If AMP is damaged, replace it with a new one.
5-4-3. Service hint (Any picture / Remark)
{T
IC202
CS5346
ADC_D ATADAC_MCLK
IC501
MLC9800
DAC_DAT ADAC_MCLK
IC801
FS502B
BEAT BOX
< AUX function signal fl ow >
AUX_ L/R
DAC_BC K
DAC_L RCK
BEAT_ DATA
AUX
IC602
PS9850
PWM
AMP IC
TAS5631
pjYWY
h kj k h{hGG GyYX\
hkjijrGGyYX]
kRGGGXXGGju]WY
< Signal check point >
h| sGGyYWYh|yGGyYWZ
hkjtjsrGGyYYX
hkjsyjrGGyYX`
3-24
Page 52
ONE POINT REPAIR GUIDE
Y
y
`
NO SOUND
There is no sound output in the IPOD FUNCTION, repair the set according to the following guide.
5-5. IN THE IPOD FUNCTION
5-5-1. Solution
Please check and replace IC201, IC202, IC203 on MAIN board.
5-5-2. How to troubleshoot (Countermeasure)
1) Check USB VBUS_+5V to Pin3 of CN201 after inserting the iPod to IPOD Docking System.
If no power, check if IPOD_P_CTRL to Pin3 of IC203 change Low to High.
2) Check if IPOD Audio L/R signals are entered from Pin11 & 12 of CN201 to Pin10 & 6 of IC201.
3) Check if the IPOD Audio L/R that some noise is removed to IC201 are output from Pin1 & 5 of IC201.
If no signal, replace the IC with a new one.
4) Check IPOD_L/R signals from 1 & 5 of IC201 to IC202(Pin26, 27).
5) Check if ADC_BCK, ADC_LRCK & DAC_MCLK are entered from IC501 to IC202.
6) Check if ADC_DATA is entered from IC202 to IC501.
If there is no signal, check +5 V & +3.3 V(ADC) for IC202. If is NG, replace it a new one.
7) Check the following I2S signal flow from IC501 to IC602. (Refer to Item 5-1.)
If there is any trouble, check the power for each IC. The power is normal but , if the signal waveform to
the IC is distorted or no signal, replace it with a new one.
8) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 5-2.
If an AMP is damaged, replace it with a new one
5-5-3. Service hint (Any picture / Remark)
{T
IC202
CS5346
IC501
MLC9800
DAC_DAT ADAC_MCLK
IC801
FS502B
BEAT BOX
IPOD_ L/R
ADC_D ATADAC_MCLK
DAC_BC K
DAC_L RCK
BEAT_ DATA
iPod
IC602
PS9850
PWM
< iPod function signal fl ow >
AMP IC
TAS5631
hkjtjsrGGyYYX
pjYWY
hkjs
GyYX
pw vksGGy YY]XhkjijrGGy
< Signal check point >
3-25
Page 53
ONE POINT REPAIR GUIDE
NO SOUND
There is no sound output in the PORT. IN FUNCTION, repair the set according to the
following guide.
5-6. IN THE PORT. IN FUNCTION
5-6-1. Solution
Please check and replace IC202 on MAIN board.
5-6-2. How to troubleshoot (Countermeasure)
1) Check PT_L/R signal from Main board to USB board.
2) Check if PT_LR is entered from Pin1 & 3 of CN3U01 to Pin1 & 3 to CN502.
3) Check POT_L/R signals to IC202(Pin21, 22).
4) Check if ADC_BCK, ADC_LRCK, & DAC_MCLK are entered from IC501 to IC202.
5) Check if ADC_DATA is entered from IC202 to IC501.
If no signal, check +5 V & +3.3 V(ADC) for IC202. If is NG, replace it a new one.
6) Check the following I2S signal flow from IC501 to IC602. (Refer to Item 5-1.)
If there is any trouble, check the power for each IC. The power is normal but , if the signal waveform to
the IC is distorted or no signal, replace it with a new one.
7) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 5-2.
If AMP is damaged, replace it with a new one
5-6-3. Service hint (Any picture / Remark)
{T
IC202
CS5346
IC501
MLC9800
DAC_DAT ADAC_MCLK
IC801
FS502B
BEAT BOX
< PORT. IN function signal fl ow >
ADC_D ATADAC_MCLK
POT_L/R
DAC_BC K
DAC_L RCK
BEAT_ DATA
USB
Board
IC602
PS9850
PWM
POT . IN
AMP IC
TAS5631
w{sGGYX
w{yGGYY
kRGGGXXGGju]WY
h| sGGyYWY
hkjtjsrGGyYYX
pjYWY
h kj k h{hGG GyYX\
hkjijrGGyYX]
hkjsyjrGGyYX`
< Signal check point >
3-26
Page 54
ONE POINT REPAIR GUIDE
NO SOUND
There is no sound output in the TUNER FUNCTION, repair the set according to the
following guide.
5-7. IN THE TUNER FUNCTION
5-7-1. Solution
Please check and replace IC202, TU101 on MAIN board.
5-7-2. How to troubleshoot (Countermeasure)
1) Check if TUNER_LR is entered from Pin1 & 3 of T1U01 to IC202(Pin23, 24).
If no signals, Check +3.3 V for Tuner power.
Check if the Tuner control signals (CLK, DAT, CE, RST, GPO2) are entered from IC101 to TU101.
If it doesn’t work, replace TUNER with a new one.
2) Check if ADC_BCK, ADC_LRCK, & DAC_MCLK are entered from IC501 to IC202.
3) Check if ADC_DATA is entered from IC202 to IC501.
If no signal, check +5 V & +3.3 V(ADC) for IC202. If is NG, replace it a new one.
4) Check the following I2S audio signal flow from IC501 to IC602. (Refer to Item 5-1.)
If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to
the IC is distorted or no signal, replace it with a new one.
5) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 5-2.
If AMP is damaged, replace it with a new one.
5-7-3. Service hint (Any picture / Remark)
{T
IC202
CS5346
IC501
MLC9800
DAC_DAT ADAC_MCLK
IC801
FS502B
BEAT BOX
< TUNER function signal fl ow >
ADC_D ATADAC_MCLK
TUNER _L/ R
DAC_BC K
DAC_L RCK
BEAT_ DATA
IC602
PS9850
PWM
TUNER
AMP IC
TAS5631
{|ulysG
GYZ
{|ulyyG
GY[
h kj k h{hGG GyYX\
hkjijrGGyYX]
kRGGGXXGGju]WY
< Signal check point >
h| sGGyYWY
hkjtjsrGGyYYX
pjYWY
hkjsyjrGGyYX`
3-27
Page 55
ONE POINT REPAIR GUIDE
NO SOUND
There is no sound output in the MIC IN FUNCTION, repair the set according to the
following guide.
5-8. IN THE MIC IN FUNCTION
5-8-1. Solution
Please check and replace IC603, IC605 on MAIN board.
5-8-2. How to troubleshoot (Countermeasure)
1) Check MIC_SIG signal to Pin 27 of CN104.
If no signal, Check the signal to Pin 3 of CN301 on the FRONT board.
Check if the signal is entered from Pin3 of CN301 to MAIN board.
2) Check if MIC_SIG is entered from Pin27 of CN104 to Pin3 to IC605 (MIC AMP).
3) Check if the amplified signal is entered from Pin4 of IC605.
If no signal output, check +12 V for IC605, replace IC605 with a new one if it has a problem.
4) Check if MIC_BCK & MIC_LRCK is entered from IC507 to IC603 and DAC_MLCK from IC501 to IC603.
Check if MIC_DATA is entered from Pin 9 of IC603I to Pin 7 of IC602.
If no signal, check +5 V & +3.3 V for IC603. If it is abnormal, change replace it a new one.
6) Check the following I2S signal flow from IC603 to IC602.
If there is any trouble, check the power for each IC. If the signals are abnormal, replace it a new one.
7) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 5-2.
If AMP is damaged, replace it with a new one.
1. WAVEFORM OF SP- & SP+ FOR
DRIVING SPINDLE MOTOR
2. WAVEFORM OF SL- / SL+ FOR
DRIVING SLED MOTOR
3. WAVEFORM OF TUR_M+ & TUR_MFOR DRIVING TRAY MOTOR
4. WAVEFORM OF LO- & LO+ FOR DRIVING PICKUP MODULE UP/DOWN MOTOR
3-40
Page 68
5. WAVEFORM OF RF SERVO
w~yj{ys
ZUZ} Oi lh {P
ilh{ w~y
joXa yZY^O {wZW[P
joYa xZWXGl
khj t jsr
ilh{ ijr
ilh{kh{h
ilh{ syjr
6. WAVEFORM OF I2S SIGNAL TO
BEAT BOX IC (IC801)
7. WAVEFORM OF BEAT BOX IC'S
POWER SEQUENCE
8. WAVEFORM OF VFD GRID CURRENT DRIVER
3-41
Page 69
9. WAVEFORM OF USB_D±
kT
kR
3-42
Page 70
WIRING DIAGRAM
/&/'%*#
/&2+%-72
16P
/&59+6%*
18P
+21&+2*10'
%0
%0
%0
%0
670'4
%0
.+0'176
#WFKQ
+0
(.(44459594.
%0
%0
/#+02%$
10P15P
14P
%07
75$2%$
15P
25P
%08
%0
29P
%0
%0
%0
%0
(41062%$5/252%$
3-433-44
Page 71
BLOCK DIAGRAMS
pwvk
k
k
l
jrG
G
tljohupz
t
1. OVERALL BLOCK DIAGRAM
P/UP
M
A,B,C,D,E,F
PD
LD
m·V{y·
SLED
s
SPINs
s
LOAD
TUR_Ms
IC408
S3053
Motor
Drive
OPEN/CLOSE/LIMIT/UPDN/D_SENSE
IC502 SDRAM
IC503 FLASH
SPDO/SLDO/FOD/TRD
MOT_MUTE/CLOSE/OPEN
IC406
TUR ·
S8082
DRM_WEN/CAS/RAS/SEL/CLK/CKE
M00_15/A00_16
SF_DI/DO
SF_CS/SCK
MICOM_CS/DO/DI/
CLK/MAIN_RESET
IC407
BU9543KV
RF+ SERVO DSP
CD_RST
CD_DIN_DOUT
SUBSYQ;
IC501
MLC9800
MCS LOGIC
CD_R/W
BUSY; CD_16M
/LRCK/DATA
CD_MCK/BCK
USB_Ds
USB_RESET/SCL/SDA
CP_RESET/SCL/SDA
IPOD_PCTRL/RX/TX/DET/READAY
USB1
USB2
USB HUB
USB2512B
ADC_EDID_PWM_DATA/CLK
DAC_MCLK
ADC_DATA
DAC_BCK/LRCK
TUNER_SCLK/SDIO/RST/GPIO2/SEN
IC504
CP for
IPOD
IC200
CS5346
IPO L/R
POT_L/R
AUX_L/R
TUNER_L/R
iPod
p
IPO
AUDIO L/R
IC251
NJM2794
POT. IN
AUX
TU101
TUNER
VFD
DIG301
MIC
AUDIO
OUT
REMOCON/KEY/
IC100
EEPROM
VFD_STB/CLK/DO/RST
CLK/DATA
IC501
S4308
IC101
MICOM
LC87F085
LBT_RX/TX/RST
SPEANA
MIC_SIG
AUDIO OUT_L/R
LBT_DATA
LBT_CLK
IC801
FS503B
BEAT BOX
LBT_DATA
LBT_BCK
/LBT_LRCK
IC603
AK5358
DRV603
SDOUT1
AMP_OTW/SD/CLIP/READY
AMP_PDN
FL·
FR ·
IC602
RL·
PS9850
PWM
RR ·
SW1·
SW2
·
IC701
AMP IC
TAS5631
IC702
AMP IC
TAS5631
IC702
AMP IC
TAS5631
F/L
F/R
R/L
R/R
SW1
SW2
300Wx2
150Wx2
300Wx2
3-453-46
Page 72
2. SMPS BLOCK DIAGRAM
Rectifier Circuit
(Bridge,
CAPACITOR)
STR-A6252 for
Main Power
MAIN
TRANS
}mk
vwhtwVmhu
p w v kGV G|z iGV Gtw lnV Gk j kj
}mk
|Tj
ZY
XY}
\U]}
[U\}
ZU^}h
wTj{ys
}rr
msORVTP
Filter
Section
(Varistor,
Resistor,
Line Filter
Thermistor)
AC
Snubber
AMP Power &
UC3844 for
Main Power
FET
TRANS
MAIN
&
AMP
[_}
Digital
Power
AMP
FL
FR
SW
C
SL
SR
3-473-48
Page 73
3. POWER BLOCK DIAGRAM
SMPS
+12V
+3.7VA
+5.6V
IC605
MIC AMP
S4308
D102
D104
D101
TJ3965D
IPOD PWR
LM39102D
KIA7027
IC601
LDO
IC505
278P33
IC203
IC201
IPOD AMP
NJM2794
IC100
EEPROM
24CS16
IC102
RESET
+5V
SPEANA
Q601
IC101
U_COM
ADC(MIC)
AK5358A
+3.3V
IC5058
TJ3965D
12VA
IC603
DRV603
IC701/702/703
POW AMP
TAS5631
IC604
TU101
TUNER
YST996
+3.3V(CD)
PWR SENS
VCC33
FRONT LED
9EA x 2
IC103
IC602
PWM
PS9850
VOLUME LED
DIG301
VFD
D301
EXTENDERx2
9EA
RMC301
REMOCON
D302
WOOFER
+3.3V(CD)
+3.3V(RF)
+3.3V(USB)
FAN
Q701
IC509
KIA1112F
IC501
MCS
MLC9800
IC502
SDRAM
EM638165
IC506
CP2.0B
Q405
IC407
RF
BU9543KV
Q406
IC504
USB HUB
USB2512A
VCC12
IC503
FLASH
MX25L8005
IC507
74AHC244
IC401
TJ3965D
+1.8V
FL·
+48V
DIG301
IC3U01
USB PWR
LM39102D
IC701/702/703
AUDIO AMP
TAS5631
ADC
IC202
CS5346
IC408
MOTOR
AM3053S
IC406
MOTOR
S8082
+3.3V(ADC)
74AHC244
74AHC244
3-493-50
IC806
IC807
+3.3V(BEAT)
IC801
BEAT BOX
FS-503B
IC803
BOOT
FLASH 16MB
IC805
BEAT SOURCE
FLASH 32MB
VCC12A
IC802
TJ3965D
Page 74
CIRCUIT DIAGRAMS
1. SMPS CIRCUIT DIAGRAM
12
11
10
9
8
IMPORTANT SAFETY NOTICE
WHEN SERVICING THIS CHASSIS, UNDER NO
CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE
MODIFIED OR ALTERED WITHOUT PERMISSION
FROM THE LG CORPORATION. ALL COMPONENTS
SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL
TO THOSE IN THE ORIGINAL CIRCUIT. SPECIAL
COMPONENTS ARE SHADED ON THE SCHEMATIC
FOR EASY IDENTIFICATION.
THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFFER
FROM THE ACTUAL CIRCUIT USED. THIS WAY,
IMPLEMENTATION OF THE LATEST SAFETY AND
PERFORMANCE IMPROVEMENT CHANGES INTO
THE SET IS NOT DELAYED UNTIL THE NEW SERVICE
LITERATURE IS PRINTED.
NOTE :
1. Shaded(
2. Voltages are DC-measured with a digital voltmeter
) parts are critical for safety.
Replace only with specified part number.
during Play mode.
7
6
5
4
3
2
Warning
CAUTION:
1
A
Danger if fuse is incorrectly replaced.
Replace only with the type identical to fuse rating
and(or) model name described in main label.
BCDEFGHIJKLMNOPQRST
Parts that are shaded are critical with
respect to risk of fire or electrical shock.
EBY32630703 Rev 3.1
SMPS
2010.11.09
3-513-52
Page 75
2. MICOM CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
EBY60990001(#1) Rev 7.4
A
BCDEFGHIJKLMNOPQRST
µ-COM
2011.05.12
3-533-54
Page 76
3. PWM CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
EBY60990001(#2) Rev 7.4
A
BCDEFGHIJKLMNOPQRST
PWM
2011.05.12
3-553-56
Page 77
4. AMP CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
EBY60990001(#3) Rev 7.4
A
BCDEFGHIJKLMNOPQRST
AMP
2011.05.12
3-573-58
Page 78
5. DSP CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
EBY60990001(#4) Rev 7.4
A
BCDEFGHIJKLMNOPQRST
DSP
2011.05.12
3-593-60
Page 79
6. RF SERVO CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
EBY60990001(#5) Rev 7.4
A
BCDEFGHIJKLMNOPQRST
RF SERVO
2011.05.12
3-613-62
Page 80
7. ADC CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
EBY60990001(#6) Rev 7.4
A
BCDEFGHIJKLMNOPQRST
ADC
2011.05.12
3-633-64
Page 81
8. BEAT BOX CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
EBY60990001(#7) Rev 7.4
A
BCDEFGHIJKLMNOPQRST
BEAT BOX
2011.05.12
3-653-66
Page 82
9. VFD CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
EBY61172601 Rev 2.1
A
BCDEFGHIJKLMNOPQRST
VFD
2011.01.25
3-673-68
Page 83
10. VOLUME CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
EBY61172701 Rev 2.1
A
BCDEFGHIJKLMNOPQRST
VOLUME
2011.01.25
3-693-70
Page 84
11. USB CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
EBY61172801 Rev 2.3
A
BCDEFGHIJKLMNOPQRST
USB
2011.01.25
3-713-72
Page 85
12. IPOD CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
EBY60990101 Rev 3.2
A
BCDEFGHIJKLMNOPQRST
IPOD
2010.11.09
3-733-74
Page 86
13. MIC CIRCUIT DIAGRAM (OPTIONAL PART)
12
11
10
9
8
7
6
5
4
3
2
1
EBY60990701 Rev 3.2
A
BCDEFGHIJKLMNOPQRST
MIC
2010.11.09
3-753-76
Page 87
CIRCUIT VOLTAGE CHART
1. HOW TO CHECK THE VOLTAGE
2. MAJOR ICs
No.
1
2
3
4
5
6
7
LC87F085NC8A
Location /
Description
IC501
MLC9800
IC101
IC100
S-24CS16
IC602
PS9850
IC603
AK5358
IC605
S4308
IC604
DRV603
Turn the SMPS board over with cable connected
and check the voltage.
Supply Voltage
Pin No.
13,47,94-VDD121.2V1.08~1.32V1.18V
30,51,84,113-IO-
VDD33
120-PLL1VDD121.2V1.08~1.32V1.18V
124-PLL2VDD121.2V1.08~1.32V1.18V
122-PLL3VDD121.2V1.08~1.32V1.18V
115-USBVDD333.3V3.0~3.6V3.26V
14,48,95-VSS123.3V3.0~3.6V3.26V
3,52,85,109,114-IO-
VSS33
119-PLL1VSS123.3V3.0~3.6V3.26V
123-PLL2VSS121.2V1.08~1.32V1.18V
121-PLL3VSS121.2V1.08~1.32V1.18V
3-AVSS333.3V3.0~3.6V3.26V
118- USBVSS333.3V3.0~3.6V3.26V
VDD1,VDD2,
VDD3,VDD4
VCC3.3V2.7~5.5V3.37V
VDD_IO3.3V2.97~3.63V3.31V
VDD_CORE1.2V1.08~1.32V1.25V
VDD_VIN13.3V2.20~3.30V3.30V
VDD_VIN23.3V2.20~3.30V3.30V
VDD_A1.2V1.08~1.321.25V
VA5V6.0V MAX5.11V
VD3.3V4.6V MAX3.31V
VCC12V4.5~12V11.25V
VDD5V3~5.5V5.1V
SourceSpec / RatingMeasured voltage
3.3V3.0~3.6V3.26V
1.2V1.08~1.32V1.18V
3.3V2.8~5.5V3.37V
No.
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Location /
Description
IC701
TAS5631
IC502
EM638165TS-6G
IC503
M25L1605D2I-12G
IC507
TC74VHC244FT
IC506
CP Chip
IC504
USB2512A
IC505
278R33
IC407
BU9543KV
IC408
S3053
IC406
S8082
IC202
CS5346
IC203
LM39102D
IC201
NJM2794RB2
IC204
LM39102D
IC801
FS-503B
IC803
M25L1605D2I-12G
IC806
TC74VHC244FT
IC807
M25L1605D2I-12G
IC807
TC74VHC244FT
IC807
KIA1112F
IC301
BU2090
IC302
BU2090
IC3U01
LM3912D
Supply Voltage
Pin No.
PVDD_X48V25~52.5V47.7V
GVDD_X12V10.8~13.2V11.91V
VDD12V10.8~13.2V11.91V
VDD,VDDQ3.3V3.0~3.6V3.27V
VDD3.3V4.6V MAX3.27V
VCC3.3V2.0~5.5V3.27V
VCC3.3V7.0V MAX3.27V
VDD333.3V3.0~3.6V3.26V
VOUT3.3V-3.28V
VDD3.3V2.7~3.6V3.27V
VCORE1.5V1.4~1.65V1.58V
VCC1, VCC25V4.3~13.2V5.10V
SVCC, PVCC5V4.3~13.2V5.10V
VA5V4.75~5.25V5.11V
VD3.3V3.13~3.47V3.27V
VLS3.3V3.13~3.47V3.27V
VLC3.3V3.13~3.47V3.27V
VOUT5V-5.12V
VCC12V4.3~13V11.93V
VOUT5V-5.13V
VDDK1.2V1.4V MAX1.19V
VDDE3.3V4.0V MAX3.27V
VDD3.3V4.6V MAX3.27V
VCC3.3V2.0~5.5V3.27V
VDD3.3V4.6V MAX3.27V
VCC5V2.0~5.5V5.12V
VOUT1.2V-1.19V
VDD3.3V7.0V MAX3.66V
VDD3.3V7.0V MAX3.66V
VOUT5V-5.11V
SourceSpec / RatingMeasured voltage
3-773-78
Page 88
3. CAPACITORS ON MAIN BOARD4. CAPACITORS ON SMPS BOARD
No.LocationValue Capacitor (uF)Voltage Spec.Measured voltage
01C11147uF 16V3.37V
02C1452.2uF 16V 3.37V
03C1241000uF 6.3V3.38V
04C1091000uF 6.3V3.38V
05C80847uF 16V1.19V
06C529100uF 16V3.30V
07C530470uF 16V5.66V
08C531470uF 16V5.65V
09C533470uF 16V3.28V
10C70610uF 16V11.92V
11C74610u 16V11.92V
12C78610uF 16V11.92V
13C713 470uF 100V 47.7V
14C734 470uF 100V 47.7V
15C753 470uF 100V 47.7V
16C774 470uF 100V 47.7V
17C793 470uF 100V 47.7V
18C784 470uF 100V 47.7V
19C52747uF 16V1.19V
20C55047uF 16V1.19V
21C57010uF16V3.27V
22C52547uF 16V3.27V
23C482100uF16V1.65V
24C46247uF 16V3.27V
25C4673.3uF 50V 1.65V
26C49247uF 16V3.27V
27C405470u 16V1.57V
28C4H6100uF6.3V1.57V
29C406100uF6.3V3.27V
30C485220uF 16V5.11V
31C221100uF16V3.28V
32C23510uF16V5.7V
33C23147uF 16V5.1V
34C221100uF16V5.1V
35C21010uF16V2.55V
36C66047uF 16V3.31V
37C65747uF 16V5.12V
38C65510uF 16V2.56V
39C6811uF 50V .3V
40C679100uF16V11.25V
41C67622uF 16V1.96V
42C122100uF16V3.31V
43C620100uF6.3V1.25V
44C6211000uF 6.3V3.30V
45C6821000uF 6.3V3.30V
46C601100uF16V3.31V
47C3U25100uF16V5.1V
No.Location
01C9031000uF315V122.3V190V
02C9041000uF315V123.9V180.7V
03C90547uF450V245.9V370.1V
04C91247uF50V18.47V18.59V
05C91447uF50V12.68V13.8V
06C90847uF50V15.34V15.33V
07C931330uF16V4.81V4.8V
08C932100uF50V31.96V31.98V
09C9331000uF16V5.75V5.75V
10C9351000uF25V12.63V12.62V
11C942100uF16V11.99V11.98V
12C9532200uF80V47.9V48.1V
Value Capacitor
(uF)
Voltage Spec.
100V-10%240V/50Hz+10%
Measured voltageMeasured voltage
3-793-80
Page 89
PRINTED CIRCUIT BOARD DIAGRAMS
1. MAIN P.C.BOARD
(TOP VIEW)
3-813-82
Page 90
MAIN P.C.BOARD
(BOTTOM VIEW)
3-833-84
Page 91
2. SMPS P.C.BOARD
NOTE) Warning
Parts that are critical with respect to risk
of fire or electrical shock.
Rev 4.1
3-853-86
Page 92
3. VFD P.C.BOARD
(BOTTOM VIEW)
EAX64004201 Rev 2.3
3-873-88
Page 93
4. VOLUME P.C.BOARD
3-893-90
Page 94
5. USB P.C.BOARD
(TOP VIEW)(BOTTOM VIEW)
6. IPOD P.C.BOARD
(TOP VIEW)(BOTTOM VIEW)
7. MIC P.C.BOARD (OPTIONAL PART)
3-913-92
Page 95
MEMOMEMO
3-933-94
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