LG MCV1306 Diagram

Page 1
MODEL: MCV1306 (MCV1306, MCS1306F/S/W)SERVICE MANUAL
Internal Use Only
Website http://biz.lgservice.com
Mini Hi-Fi System
SERVICE MANUAL
P/NO : AFN74972291 AUGUST, 2011
MODEL:
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL.
MCV1306
(MCV1306, MCS1306F/S/W)
Page 2
CONTENTS
SECTION 1 ........ GENERAL
SECTION 2 ........ CABINET & MAIN CHASSIS
SECTION 3 ........ ELECTRICAL
SECTION 4 ........ REPLACEMENT PARTS LIST
1-1
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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
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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.
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
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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.
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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
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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.
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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
.
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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
.
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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
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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 (MCV1306) ............................................................................ 2-11
2. MECHANISM DECK SECTION (CDM-H1803) ....................................................................................... 2-13
3. PACKING ACCESSORY SECTION ....................................................................................................... 2-15
4. SPEAKER SECTION .............................................................................................................................. 2-16
2-1
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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
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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
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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
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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
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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
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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
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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
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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
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ORDER OF ASSEMBLY FOR MECHANISM DECK
1
2
3
Figure 9 Figure 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
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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
2-11 2-12
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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
2-13 2-14
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
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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
ELECTRICAL TROUBLESHOOTING GUIDE .................................................................................. 3-29
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
WAVEFORMS ............................................................................................................................................. 3-40
WIRING DIAGRAM ................................................................................................................................... 3-43
BLOCK DIAGRAMS ................................................................................................................................. 3-45
1. OVERALL BLOCK DIAGRAM .............................................................................................................. 3-45
2. SMPS BLOCK DIAGRAM..................................................................................................................... 3-47
3. POWER BLOCK DIAGRAM ................................................................................................................. 3-49
CIRCUIT DIAGRAMS ............................................................................................................................... 3-51
1. SMPS CIRCUIT DIAGRAM .................................................................................................................. 3-51
2. MICOM CIRCUIT DIAGRAM ................................................................................................................ 3-53
3. PWM CIRCUIT DIAGRAM .................................................................................................................... 3-55
4. AMP CIRCUIT DIAGRAM ..................................................................................................................... 3-57
5. DSP CIRCUIT DIAGRAM ..................................................................................................................... 3-59
6. RF SERVO CIRCUIT DIAGRAM .......................................................................................................... 3-61
7. ADC CIRCUIT DIAGRAM ..................................................................................................................... 3-63
8. BEAT BOX CIRCUIT DIAGRAM .......................................................................................................... 3-65
9. VFD CIRCUIT DIAGRAM ..................................................................................................................... 3-67
10. VOLUME CIRCUIT DIAGRAM ............................................................................................................. 3-69
11. USB CIRCUIT DIAGRAM ..................................................................................................................... 3-71
12. IPOD CIRCUIT DIAGRAM .................................................................................................................... 3-73
13. MIC CIRCUIT DIAGRAM (OPTIONAL PART) ..................................................................................... 3-75
CIRCUIT VOLTAGE CHART ................................................................................................................. 3-77
PRINTED CIRCUIT BOARD DIAGRAMS ......................................................................................... 3-81
1. MAIN P.C.BOARD ................................................................................................................................ 3-81
2. SMPS P.C.BOARD ............................................................................................................................... 3-85
3. VFD P.C.BOARD .................................................................................................................................. 3-87
4. VOLUME P.C.BOARD .......................................................................................................................... 3-89
5. USB P.C.BOARD .................................................................................................................................. 3-91
6. IPOD P.C.BOARD ................................................................................................................................ 3-91
7. MIC P.C.BOARD (OPTIONAL PART) .................................................................................................. 3-91
3-1
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TRAINING MASTER
1. NO SOUND FROM SPEAKERS
Are the speaker cables connected correctly
between the speaker terminals on the unit
and the speakers?
YES
Does the customer select correctly
the input function he or she wants to listen to?
YES
After pressing FUNCTION,
is “CD, USB, AUX, IPOD, AM or FM” displayed?
YES
Turn the master volume clockwise
for the volume up.
YES
NO
NO
NO
NO
Make sure to connect the cables to each specified
connector tightly on the unit.
Connect the woofer cables to the WOOF SYSTEM
connectors on the rear panel.
Make sure to connect some cables like A/V cables
and FM/AM antenna cables.
Make sure to select the desired input function
pressing FUCTION button.
The volume level LEDs around the master volume
will be turned on more and more
while turning it clockwise for the volume up.
Is there any sound from the selected input source?
(AUX IN, USB, TUNER or CD Disc)
YES
Are the sound spectrum level LEDs
on the left and right side of the front panel
being changed up and down
according to the sound input gain?
YES
The sound is output from the speakers.
YES
Sound OK
NO
NO
Refer to a device’s instruction manual
and then check if there is sound output from it
connecting another audio system.
The sound spectrum level LEDs will be turned on/off
repeatedly at regular intervals. The speakers cables
might be short-circuited with the chassis ground.
Be careful not to be shorted each other.
3-2
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TRAINING MASTER
2. NO SOUND IN AUX FUNCTION
Does the customer select correctly
the AUX function he or her wants to listen to?
YES
After pressing the FUNCTION,
is “AUX” displayed on VFD?
YES
Turn the master volume clockwise
for the volume up.
YES
Is there any sound
from the selected input source?
YES
NO
NO
NO
NO
Make sure to connect some cables
between the AUX IN jacks of the unit
and the Audio output jacks of a external Audio device.
Make sure to select the AUX IN function
pressing the AUX/IPOD/PORT. IN button.
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
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.
3-3
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TRAINING MASTER
3. NO SOUND IN PORT. IN FUNCTION
Does the customer select correctly
the PORT. IN function he or her wants to listen to?
YES
Is “PORT. IN” displayed on VFD?
YES
Turn the master volume clockwise
for the volume up.
YES
Is there any sound
from the selected input source?
YES
NO
NO
NO
NO
Make sure to connect a cable
between the PORT. IN jack of the unit and the Audio
output jack of a portable device like a MP3 player.
Make sure to select the PORT. IN function
pressing the AUX/IPOD/PORT. IN button.
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 portable device’s instruction manual
and then check if there is sound output
from it connecting another audio system.
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.
3-4
Page 32
TRAINING MASTER
4. NO SOUND IN IPOD FUNCTION
Does the customer select correctly
the iPod function he or she wants to listen to?
YES
Does the customer use the compatible iPod?
YES
After displaying “Loading”,
is “IPOD” displayed on VFD?
YES
After selecting desired songs
using the user interface of a iPod or a iPhone,
press PALY button and turn the master volume
clockwise for the volume up.
YES
NO
NO
NO
NO
Make sure to put a iPod or a iPhone
on the docking system on the top of the unit.
Make sure that The unit supports the models
as follows/iPod nano 1 G, 2 G, 3 G, 4 G, 5 G, 6 G/
iPod classic/ iPod 4 G, 5 G/
iPod touch 2 G, 3 G, 4 G/ iPhone 3 G, 4 G/.
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~yj{ys
OyX[`P
rlX
OX[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.
3-1-3. Service hint (Any picture / Remark)
kpn ZWXG} mk
{w ZWYSG {w ZWZSG
{wZW[
xZWX xZW[xZWZ
yZY^O{w ZW[P xZWXGl
j  G G SGG GGG GU
j GGGGU
< Waveform of the grid current driver >
G
ZW} T
3-14
Page 42
ONE POINT REPAIR GUIDE
4. 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 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
zwTGju[W\
z wRG Gju[W\
< Waveform of SP- & SP+
for driving SPinDLE motor >
zwR
YGGju[W\
zwT
XGGju[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)
hG YU`} T
zsTGju[W\
zwT G ju[W\
z sRGGju[W\
zwRGGju[W\
< Waveform of SLED- & SLED+
for driving SLED motor >
zsR
[GGju[W\
zsT
ZGGju[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)
hG ZU_} T
{| ytRGGju[W\
{| ytTGju[W\
< Waveform of TUR_M± for driving TRAY motor >
{|ytT
_GGju[W\
{|ytR
^GGju[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)
hG ZU_\} T
tv{ vwlu
tv{ jsvzl svT Gju[W[ svRGGju[W[
< Waveform
for driving TRAY open / close motor >
ju[W\
svR
XZGGju[W\
tv{vwlu
^GGpj[W_
tv{jsvzl
]GGpj[W_
svT
XYGGju[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)
{TGju[W[ {RGGju[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
mRGGju[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_BCK: IC501_87Pin --> IC507_16Pin --> IC602_4Pin
- DAC_LRCK : IC501_88Pin --> IC507_5Pin --> IC602_4Pin (44.1 kHz)
- 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_ DATA DAC_MCLK
IC801
FS502B
BEAT BOX
DAC_BCK
DAC_LRCK
IC602
PS9850
PWM
< I2S Signal Flow >
AMP IC
TAS5631
khjtjsrGOX]U`Zto¡P khjijrGOXU[to¡ P khjkh{h khjsyjrGO[[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^WX pj^WY pj^WZ
ilh k
< Signal check point >
yXWZOhtwwkuP
khjkh{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 A DAC_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
kRGGGXXGGju]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 A DAC_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\
hkjijrGGyYX]
kRGGGXXGGju]WY
< Signal check point >
h| sGGyYWYh|yGGyYWZ
hkjtjsrGGyYYX
hkjsyjrGGyYX`
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 A DAC_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
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< 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 A DAC_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
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< 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 A DAC_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
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< Signal check point >
h| sGGyYWY
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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.
5-8-3. Service hint (Any picture / Remark)
IC603
AK5358
MLC9800
DAC_DAT A DAC_MCLK
BEAT BOX
MIG_SIG
MIC_DATADAC_MCLK
IC501
IC801
FS502B
< MIC IN function signal fl ow >
IC605 S4308
DAC_BC K
DAC_L RCK
BEAT_ DATA
Board
IC602
PS9850
PWM
MIC
AMP IC
TAS5631
MIC IN
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< Signal check point >
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tpjijrGGy][Z
3-28
Page 56
ELECTRICAL TROUBLESHOOTING GUIDE
1. POWER SUPPLY ON SMPS BOARD
No output 3.7 / 5.6 VA
F901 normal?
YES
BD901 normal?
YES
D904 normal?
YES
IC934 normal?
YES
D933, D937 normal?
YES
NO
NO
NO
NO
NO
Replace F901 (same fuse).
Replace BD901.
Replace D904.
Replace IC934.
Replace D933, D937.
Power line of MAIN PCB is short.
3-29
Page 57
ELECTRICAL TROUBLESHOOTING GUIDE
No output 12 V
F901 normal?
YES
BD901 normal?
YES
D904 normal?
YES
D934, D935 normal?
YES
IC931 normal?
YES
NO
NO
NO
NO
NO
Replace F901 (same fuse).
Replace BD901.
Replace D904.
Replace D934, D935.
Replace IC931.
Power Line of Main PCB is short.
3-30
Page 58
ELECTRICAL TROUBLESHOOTING GUIDE
No output FL+/FL-
P-CTRL OK?
YES
D931, D932
OK?
YES
ZD931 OK?
YES
FR931 short?
YES
Check soldering of PN901.
NO
NO
NO
NO
Check 3.3 V Output & P-CTRL.
Replace D931, D932.
Replace ZD931.
Replace FR931.
3-31
Page 59
ELECTRICAL TROUBLESHOOTING GUIDE
No AMP Output
Is the
VCC supplied to
IC911 Pin7?
YES
ZD912, ZD913
OK ?
YES
D951, D952
OK ?
YES
NO
NO
NO
P-CTRL OK?
YES
Q901,D904
OK?
YES
Replace ZD912, ZD913.
Replace D951, D952.
NO
NO
Check 3.3V & P-CTRL.
Replace D914/ Q900/ PC901.
Check soldering of CN902.
3-32
Page 60
ELECTRICAL TROUBLESHOOTING GUIDE
2. SYSTEM PART
Power on.
“HELO”
Display on FLD
OK?
YES
Volume LED
(LD302~LD322)
Turn on?
NO
NO
CN301
cable connection
OK?
YES
CN301
Pin27, 28, 29 power
OK?
YES
CN301
Pin20, 21, 22 data signal
OK?
YES
Q301, 303, 304
grid voltage OK?
CN301 Pin18
+12 V OK?
NO
NO
NO
NO
NO
Check FFC cable (Pin29).
Check SMPS board.
Check MAIN board.
Replace DIG301.
Check SMPS board.
YES
When turn
the volume, count is
change?
YES
FRONT board OK.
NO
YES
CN301 Pin7, 9, 12
I2C data OK?
YES
Replace LED
(LD302 ~ LD322).
CN301 Pin13, 14
signal OK?
YES
Check MAIN board.
3-33
NO
NO
Check MAIN board.
Check FFC cable.
Page 61
ELECTRICAL TROUBLESHOOTING GUIDE
3. NO AUDIO PART
CD FUNCTION
Can
disc insert?
YES
Disc reading OK?
YES
IC501
Pin100,101,102 I2S input
signal OK?
NO
NO
LOAD +- ok ?
YES
Is motor impedance
about 12 Ω?
OPU driving
(Focusing & Tracking) OK?
Check OPU.
(Pick-up module)
NO
NO
NO
NO
Is motor_open/ close OK?
(IC408 Pin9,10)
YES
Check IC301.
Check Loading motor.
Check IC408.
NO
Focusing/
Tracking/ Sled Signal
OK?
YES
PD(CN404 Pin5)
about 180 mV?
YES
IC407
Pin34,35,36 I2S output
signal OK?
YES
IC501
Pin100,101,102 I2S input
signal OK?
YES
A
NO
NO
IC407
RF & Servo signal
OK?
YES
Check IC501.
3-34
NO
Check FFC cable
to CN404, CN405.
Page 62
ELECTRICAL TROUBLESHOOTING GUIDE
USB play
Pin116,117 USB_D output
IC501
signal OK?
YES
When insert
USB,IC502 Pin1,2,3,4 USB_D
signal OK?
YES
A
AUX
NO
NO
Check IC501.
IC3U01
USB power +5 V
OK?
YES
NO
Replace IC3U01.
Pin7,8 AUX input signal
IC202
OK?
YES
IC202
Pin42,43,44 I2S input signal
OK?
YES
IC202
Pin41 ADC data output signal
OK?
YES
A
NO
NO
NO
Check audio cable.
Check IC501.
Replace IC202.
3-35
Page 63
ELECTRICAL TROUBLESHOOTING GUIDE
POT. IN
Pin21,22 POT. IN input signal
IC202
OK?
YES
IC202
Pin42,43,44 I2S input signal
OK?
YES
IC202
Pin41 ADC data output signal
OK?
YES
A
iPod
NO
NO
NO
Check USB board.
Check IC501.
Replace IC202.
Pin25,26 iPod input signal
IC202
OK?
YES
IC202
Pin42,43,44 I2S input signal
OK?
YES
IC202
Pin41 ADC data output
signal OK?
YES
A
NO
NO
NO
Pin4 USB_VBUS 5 V
IC203
OK?
YES
Check IC501.
Replace IC202.
3-36
NO
Check USB_VBUS of IC203.
Page 64
ELECTRICAL TROUBLESHOOTING GUIDE
TUNER
Pin21,22 TUNER_L/R input
IC202
signal OK?
YES
IC202
Pin42,43,44 I2S input
signal OK?
YES
IC202
Pin41 ADC data output
signal OK?
YES
A
NO
NO
NO
TU101
TUNER_L/R output
signal OK?
YES
Check IC501.
Replace IC202.
NO
Check +3.3 V of TU101.
3-37
Page 65
ELECTRICAL TROUBLESHOOTING GUIDE
A
Pin83,87,88 I2S data output
IC501
signal OK?
YES
IC507
Pin2,17 DAC_BCK/LRCK input
signal OK?
YES
IC507
Pin7,14 BEAT_LRCK/BCK output
signal OK?
YES
IC501
Pin83 BEAT_DAC_DATA output
signal OK?
YES
IC501
Pin83 BEAT_DAC_DATA output
signal OK?
YES
NO
NO
NO
NO
NO
Replace IC501.
Check IC507.
Replace IC507.
Check IC501.
Check IC501.
IC801
I2S input signal
OK?
YES
IC801
BEAT_DATA output signal
OK?
YES
B
NO
NO
Check IC501.
Check IC801.
3-38
Page 66
ELECTRICAL TROUBLESHOOTING GUIDE
4. DIGITAL AUDIO AMP CHECK
B
IC602
I2S input signal
OK?
YES
IC602
PWM data output signal
OK?
YES
IC701
FL±/FR± input signal
OK?
YES
+12 VA, +48 V
Power voltage OK?
NO
NO
NO NO
Check IC602.
NO
Check IC801 & IC501.
Replace IC602.
IC702
SW1±/SW2± input signal
OK?
YES
Check SMPS.
Check IC602.
RL±/RR± input signal
IC703
OK?
YES
YES
SPK_FL±/FR± output
Check L701, L702, L704, L705. Check L708, L709, L710. Check L711, L714, L715, L717.
IC701
OK?
YES YES YES
Replace IC701. Replace IC702. Replace IC703.
NO NO
IC702
SPK_SW output
OK?
SPK_RL±/RR± output
IC703
OK?
NO
YES YES YES
Check speaker cable connection.
OK
3-39
Page 67
WAVEFORMS
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svR
svT
zsR
zsT
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
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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
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3-42
Page 70
WIRING DIAGRAM
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/&2+%-72
16P
/&59+6%*
18P
+21&+2*10'
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10P15P
14P
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15P
25P
%08
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29P
%0
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3-43 3-44
Page 71
BLOCK DIAGRAMS
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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
3-45 3-46
Page 72
2. SMPS BLOCK DIAGRAM
Rectifier Circuit
(Bridge,
CAPACITOR)
STR-A6252 for
Main Power
MAIN
TRANS
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XY}
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ZU^}h
wTj{ys
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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
3-47 3-48
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
3-49 3-50
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.
B C D E F G H I J K L M N O P Q R ST
Parts that are shaded are critical with respect to risk of fire or electrical shock.
EBY32630703 Rev 3.1
SMPS
2010.11.09
3-51 3-52
Page 75
2. MICOM CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
EBY60990001(#1) Rev 7.4
A
B C D E F G H I J K L M N O P Q R ST
µ-COM
2011.05.12
3-53 3-54
Page 76
3. PWM CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
EBY60990001(#2) Rev 7.4
A
B C D E F G H I J K L M N O P Q R ST
PWM
2011.05.12
3-55 3-56
Page 77
4. AMP CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
EBY60990001(#3) Rev 7.4
A
B C D E F G H I J K L M N O P Q R ST
AMP
2011.05.12
3-57 3-58
Page 78
5. DSP CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
EBY60990001(#4) Rev 7.4
A
B C D E F G H I J K L M N O P Q R ST
DSP
2011.05.12
3-59 3-60
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
B C D E F G H I J K L M N O P Q R ST
RF SERVO
2011.05.12
3-61 3-62
Page 80
7. ADC CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
EBY60990001(#6) Rev 7.4
A
B C D E F G H I J K L M N O P Q R ST
ADC
2011.05.12
3-63 3-64
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
B C D E F G H I J K L M N O P Q R ST
BEAT BOX
2011.05.12
3-65 3-66
Page 82
9. VFD CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
EBY61172601 Rev 2.1
A
B C D E F G H I J K L M N O P Q R ST
VFD
2011.01.25
3-67 3-68
Page 83
10. VOLUME CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
EBY61172701 Rev 2.1
A
B C D E F G H I J K L M N O P Q R ST
VOLUME
2011.01.25
3-69 3-70
Page 84
11. USB CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
EBY61172801 Rev 2.3
A
B C D E F G H I J K L M N O P Q R ST
USB
2011.01.25
3-71 3-72
Page 85
12. IPOD CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
EBY60990101 Rev 3.2
A
B C D E F G H I J K L M N O P Q R ST
IPOD
2010.11.09
3-73 3-74
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
B C D E F G H I J K L M N O P Q R ST
MIC
2010.11.09
3-75 3-76
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-VDD12 1.2V 1.08~1.32V 1.18V
30,51,84,113-IO-
VDD33
120-PLL1VDD12 1.2V 1.08~1.32V 1.18V
124-PLL2VDD12 1.2V 1.08~1.32V 1.18V
122-PLL3VDD12 1.2V 1.08~1.32V 1.18V
115-USBVDD33 3.3V 3.0~3.6V 3.26V
14,48,95-VSS12 3.3V 3.0~3.6V 3.26V
3,52,85,109,114-IO-
VSS33
119-PLL1VSS12 3.3V 3.0~3.6V 3.26V
123-PLL2VSS12 1.2V 1.08~1.32V 1.18V
121-PLL3VSS12 1.2V 1.08~1.32V 1.18V
3-AVSS33 3.3V 3.0~3.6V 3.26V
118- USBVSS33 3.3V 3.0~3.6V 3.26V
VDD1,VDD2,
VDD3,VDD4
VCC 3.3V 2.7~5.5V 3.37V
VDD_IO 3.3V 2.97~3.63V 3.31V
VDD_CORE 1.2V 1.08~1.32V 1.25V
VDD_VIN1 3.3V 2.20~3.30V 3.30V
VDD_VIN2 3.3V 2.20~3.30V 3.30V
VDD_A 1.2V 1.08~1.32 1.25V
VA 5V 6.0V MAX 5.11V
VD 3.3V 4.6V MAX 3.31V
VCC 12V 4.5~12V 11.25V
VDD 5V 3~5.5V 5.1V
Source Spec / Rating Measured voltage
3.3V 3.0~3.6V 3.26V
1.2V 1.08~1.32V 1.18V
3.3V 2.8~5.5V 3.37V
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_X 48V 25~52.5V 47.7V
GVDD_X 12V 10.8~13.2V 11.91V
VDD 12V 10.8~13.2V 11.91V
VDD,VDDQ 3.3V 3.0~3.6V 3.27V
VDD 3.3V 4.6V MAX 3.27V
VCC 3.3V 2.0~5.5V 3.27V
VCC 3.3V 7.0V MAX 3.27V
VDD33 3.3V 3.0~3.6V 3.26V
VOUT 3.3V - 3.28V
VDD 3.3V 2.7~3.6V 3.27V
VCORE 1.5V 1.4~1.65V 1.58V
VCC1, VCC2 5V 4.3~13.2V 5.10V
SVCC, PVCC 5V 4.3~13.2V 5.10V
VA 5V 4.75~5.25V 5.11V
VD 3.3V 3.13~3.47V 3.27V
VLS 3.3V 3.13~3.47V 3.27V
VLC 3.3V 3.13~3.47V 3.27V
VOUT 5V - 5.12V
VCC 12V 4.3~13V 11.93V
VOUT 5V - 5.13V
VDDK 1.2V 1.4V MAX 1.19V
VDDE 3.3V 4.0V MAX 3.27V
VDD 3.3V 4.6V MAX 3.27V
VCC 3.3V 2.0~5.5V 3.27V
VDD 3.3V 4.6V MAX 3.27V
VCC 5V 2.0~5.5V 5.12V
VOUT 1.2V - 1.19V
VDD 3.3V 7.0V MAX 3.66V
VDD 3.3V 7.0V MAX 3.66V
VOUT 5V - 5.11V
Source Spec / Rating Measured voltage
3-77 3-78
Page 88
3. CAPACITORS ON MAIN BOARD 4. CAPACITORS ON SMPS BOARD
No. Location Value Capacitor (uF) Voltage Spec. Measured voltage
01 C111 47uF 16V 3.37V
02 C145 2.2uF 16V 3.37V
03 C124 1000uF 6.3V 3.38V
04 C109 1000uF 6.3V 3.38V
05 C808 47uF 16V 1.19V
06 C529 100uF 16V 3.30V
07 C530 470uF 16V 5.66V
08 C531 470uF 16V 5.65V
09 C533 470uF 16V 3.28V
10 C706 10uF 16V 11.92V
11 C746 10u 16V 11.92V
12 C786 10uF 16V 11.92V
13 C713 470uF 100V 47.7V
14 C734 470uF 100V 47.7V
15 C753 470uF 100V 47.7V
16 C774 470uF 100V 47.7V
17 C793 470uF 100V 47.7V
18 C784 470uF 100V 47.7V
19 C527 47uF 16V 1.19V
20 C550 47uF 16V 1.19V
21 C570 10uF 16V 3.27V
22 C525 47uF 16V 3.27V
23 C482 100uF 16V 1.65V
24 C462 47uF 16V 3.27V
25 C467 3.3uF 50V 1.65V
26 C492 47uF 16V 3.27V
27 C405 470u 16V 1.57V
28 C4H6 100uF 6.3V 1.57V
29 C406 100uF 6.3V 3.27V
30 C485 220uF 16V 5.11V
31 C221 100uF 16V 3.28V
32 C235 10uF 16V 5.7V
33 C231 47uF 16V 5.1V
34 C221 100uF 16V 5.1V
35 C210 10uF 16V 2.55V
36 C660 47uF 16V 3.31V
37 C657 47uF 16V 5.12V
38 C655 10uF 16V 2.56V
39 C681 1uF 50V .3V
40 C679 100uF 16V 11.25V
41 C676 22uF 16V 1.96V
42 C122 100uF 16V 3.31V
43 C620 100uF 6.3V 1.25V
44 C621 1000uF 6.3V 3.30V
45 C682 1000uF 6.3V 3.30V
46 C601 100uF 16V 3.31V
47 C3U25 100uF 16V 5.1V
No. Location
01 C903 1000uF 315V 122.3V 190V
02 C904 1000uF 315V 123.9V 180.7V
03 C905 47uF 450V 245.9V 370.1V
04 C912 47uF 50V 18.47V 18.59V
05 C914 47uF 50V 12.68V 13.8V
06 C908 47uF 50V 15.34V 15.33V
07 C931 330uF 16V 4.81V 4.8V
08 C932 100uF 50V 31.96V 31.98V
09 C933 1000uF 16V 5.75V 5.75V
10 C935 1000uF 25V 12.63V 12.62V
11 C942 100uF 16V 11.99V 11.98V
12 C953 2200uF 80V 47.9V 48.1V
Value Capacitor
(uF)
Voltage Spec.
100V-10% 240V/50Hz+10%
Measured voltage Measured voltage
3-79 3-80
Page 89
PRINTED CIRCUIT BOARD DIAGRAMS
1. MAIN P.C.BOARD
(TOP VIEW)
3-81 3-82
Page 90
MAIN P.C.BOARD
(BOTTOM VIEW)
3-83 3-84
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
3-85 3-86
Page 92
3. VFD P.C.BOARD
(BOTTOM VIEW)
EAX64004201 Rev 2.3
3-87 3-88
Page 93
4. VOLUME P.C.BOARD
3-89 3-90
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)
3-91 3-92
Page 95
MEMO MEMO
3-93 3-94
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