Rautz HC-7852UX User manual

Digital Home Cinema System
SN: 9CD8307300
Aug. 2008
Model : HC-7852UX/HV-7852HUX
MENU/
RETURN
DISPLAY
FMMODE
AUTO
MEMORY
PGM
SETUP
INTRO
RANDOM
ZOOM
SLEEP
CH.LEVEL
SOUNDMODE
LANGUAGE
SLOW
GOTO
TITLE
PBC
REPEAT
RDSMODE
SUBTITLE
MPX
UBS
A-B
PTYSEARCH
EQ
ANGLE
DIGEST
STANDBY/ONOPEN/CLOSE
PROGRESSIVE
12
0
3
456
789
MUTE
DVD
(TVSYS)
TUNER
DIGITAL
AUDIO
STOP PLAY PAUSE/STEP
VOL
ENTER

Table of Contents
DIGITAL HOME CINEMA SYSTEM
Model : HV-7852UX
HV-7852HUX
SAFETY PRECAUTIONS ............................................. 1
SPECIFICATIONS .......................................................... 2
LOCATION OF USERS CONTROLS ............................. 3
●
Front Panel
●
Display
●
Rear Panel
●
Remote Controller
CONNECTING TO EQUIPMENT .................................... 4
●
Connecting to TV
●
Connecting to Speakers
●
Connecting the supplied FM antennas
●
Connecting the USB device of Fresh memory type
●
Connecting to Audio Equipment
●
Connecting to Audio/Video Equipment
FIRMWARE DOWNLOAD METHOD .............................. 5
●
Preparing the Firmware Upgrade
●
Activating the Firmware Upgrade
●
Starting Update
●
Read the USB Card, Checksum Check and Update New
Firmware.
●
Completed Update.
●
Check the Update Version.
CODE FREE METHOD & EEPROM RESET .................. 6
●
Preparing the Code Free Method
●
EEPROM Reset
TROUBLE SHOOTING GUIDE ....................................... 7
WAVEFORM OF MAJOR CHECK METHOD ................. 8
INTERNAL BLOCK DIAGRAM OF ICs .......................... 9
EXPLODED VIEW AND MECHANICAL PARTS LIST ..... 10
●
Mechanical Exploded View / Parts list
LEVEL/WIRING DIAGRAM ........................................... 11
BLOCK DIAGRAM ........................................................ 12
SCHEMATIC DIAGRAM ............................................... 13
●
Front Section
●
SMPS Section
●
Digital AMP Section
●
HV-7852UX MPEG Section 1 : Processor
●
HV-7852UX MPEG Section 2 : Motor & Pickup
●
HV-7852UX MPEG Section 3 : Interface & Video
●
HV-7852HUX MPEG Section 1 : Processor
●
HV-7852HUX MPEG Section 2 : Memory
●
HV-7852HUX MPEG Section 3 : Motor & Pickup
●
HV-7852HUX MPEG Section 4 : Interface & Video
●
HV-7852HUX MPEG Section 5 : HDMI
P.C.B PATTERN LAYOUT ........................................... 14
●
FRONT
●
HV-7852UX MPEG
●
HV-7852HUX MPEG
●
Function
●
AMP
●
Jack, SCART
●
SMPS
Appendix ELECTRICAL PARTS LIST............................... 15
●
Electrical Parts List
●
Electrical Parts List [Option List]

Safety Precautions
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WARNING : TO PREVENT FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE
THIS APPLIANCE TO RAIN OR MOISTURE.
CAUTION : TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT
REMOVE COVER (OR BACK). NO USER SERVICEABLE PARTS
INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
THIS SYMBOL IS INTENDED TO ALERT THE USER TO THE
PRESENCE OF UNINSULTED "DANGEROUS VOLTAGE"
WITHIN THE PRODUCT'S ENCLOSURE THAT MAY BE
SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF
ELECTRIC SHOCK TO PERSONS.
THIS SYMBOL IS INTENDED TO ALERT THE USER TO THE
PRESENCE OF IMPORTANT OPERATING AND MAINTENANCE
(SERVICING) INSTRUCTIONS IN THE LITERATURE
ACCOMPANYING THE APPLIANCE.
CAUTION
TO PREVENT ELECTRIC SHOCK, DO NOT USE THIS POLARIZED AC
PLUG WITH AN EXTENSION CORD, RECEPTACLE OR OTHER OUTLET
UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE
EXPOSURE.
LASER SAFETY
THIS UNIT EMPLOYS A LASER. ONLY QUALIFIED SERVICE PERSONNEL
SHOULD REMOVE THE COVER OR ATTEMPT TO SERVICE THIS DEVICE
DUE TO POSSIBLE EYE INJURY.
CAUTION : USE OF ANY CONTROLS, ADJUSTMENTS, OR PROCEDURES
OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS
RADIATION EXPOSURE.
CAUTION : TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF
PLUG TO WIDE SLOT, FULLY INSERT.
ATTENTION : POUR EVITER LES CHOCS ELECTRIQUES, INTRODUIRE
LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPON-
DANTE DE LA PRISE ET POUSSER JUSQU'AU FOND.
Important Safety Instructions
- All the safety and operating instructions should be read before
the appliance is operated.
- The safety and operating instructions should be retained for
future reference.
- All warnings on the appliance and in the operating instructions
should be adhered to.
- All operating and use instructions should be followed.
1. Water and Moisture - The appliance should not be used near
water - for example, near a bathtub, washbowl, kitchen sink,
laundry tub, in a wet basement, or near a swimming pool,
and the like.
2. Carts and Stands - The appliance
should be used only with a cart or
stand that is recommended by th
manufacturer.
3. An appliance and cart combination
should be moved with care. Quick
stops, excessive force, and uneven
surfaces may cause the appliance
and cart combination to overturn.
4. Wall or Ceiling Mounting - The appli-
ance should be mounted to a wall or
ceiling only as recommended by the manufacturer.
5. Ventilation - The appliance should be situated so that its
location or position does not interfere with its proper
ventilation. For example, the appliance should not be situated
on a bed, sofa, rug, or similar surface that may block the
ventilation openings; or, placed in a built-in installation, such
as a bookcase or cabinet that may impede the flow of air
through the ventilation openings.
6. Heat - The appliance should be situated away from heat
sources such as radiators, heat registers, stoves, or other
appliances (including amplifiers) that produce heat.
7. Power Sources - The appliance should be connected to a
power supply only of the type described in the operating
instructions or as marked on the appliance.
8. Grounding or Polarization - The precautions that should be
taken so that the grounding or polarization means of an
appliance is not defeated.
9. Power - Cord Protection - Power-supply cords should be
routed so that they are not likely to be walked on or pinched
by items placed upon or against them, paying particular
attention to cords at plugs, convenience receptacles, and the
point where they exit from the appliance.
10.Protective Attachment Plug - If the appliance is equipped with
an attachment plug having overload protection. This is a
safety feature. See Instruction Manual for replacement or
resetting of protective device. If replacement of the plug is
required, be sure the service technician has used a
replacement plug specified by the manufacturer that has the
same overload protection as the original plug.
11.Cleaning - The appliance should be cleaned only as
recommended by the manufacturer.
12.Power Lines - An outdoor antenna should be located away
from power lines.
CAUTION
RISK OF ELECTRIC SHOCKS
DO NOT OPEN
PORTABLE CART
Figure 2

Safety Precautions
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13.Outdoor Antenna Grounding - If an outside antenna is
connected to the receiver be sure the antenna system is
grounded so as to provide some protection against voltage
surges and built-up static charges. Article 810 of the National
Electrical Code, ANSI/NFPA 70, provides information with
regard to proper grounding of the mast and supporting
structure, grounding of the lead-in wire to an antenna-dis
charge unit, size of grounding conductors,location of antenna-
discharge unit, connection to grounding electrodes and
requirements for the grounding electrode. See Figure 1.
14.Non-use Periods - The power cord of the appliance should be
unplugged from the outlet when left unused for a long period
of time.
15.Object and Liquid Entry - Care should be taken so that objects
do not fall and liquids are not spilled into the enclosure through
openings.
16.Damage Requiring Service - The appliance should be
serviced by qualified service personnel when:
a) The power-supply cord or the plug has been damaged; or
b) Objects have fallen, or liquid has been spilled into the
appliance; or
c) The appliance has been exposed to rain; or
d) The appliance does not appear to operate normally or
exhibits a marked change in performance; or
e) The appliance has been dropped, or the enclosure
damaged.
17.Servicing - The user should not attempt to service the
appliance beyond that described in the operating instructions.
All other servicing should be referred to qualified service
personnel.
ANTENNA DISCHARGE UNIT
(NEC SECTION 810-20)
ANTENNA LEAD
IN WIRE
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250 PART H)
GROUND CLAMP
ELECTRIC
SERVICE
EQUIPMENT
GROUNDING CONDUCTORS
(NEC SECTION 810-21)
GROUND CLAMPS
EXAMPLE OF ANTENNA
GROUNDING
NEC - NATIONAL ELECTRICAL CODE

Specifications
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Power Output at 10% THD(RMS)
THD(Total Harmonic Distortion)
Input Sen. / Impedance @ 1KHz, 47K ohms
Output Level/Impedance @ 1KHz
Frequency Response(Analogue)
S/N Ratio IHF-A Weighted
Subwoofer Turnover Frequency
Channel Separation
General specifications
Composite 75 ohm
Component Out(Y/ Cb/ Cr) : Option
Ref. 500 KHz
@1 MHz
DVD
1.0 Vp-p / 75 ohm
1V p-p / 0.7 Vp-p / 0.7 Vp-p
45 dB
60 dB
±0.5 dB
±0.5 dB
5 Hz ~ 5.7 MHz
40 dB
Video Section
Output Level/Impedance
Frequency Response
Crosstalk
S/N Ratio
Tuning Range
Scanning Frequency Interval
Usable Sensitivity, 75 ohms
S/N Ratio @1mV IHF-A Filter
USA Version
Australia / Europe Version
USA Version
Australia / Europe Version
S/N = 30 dB, USA Version
S/N = 26 dB, Australia / Europe Version
Mono USA Version
Mono Australia / Europe Version
Stereo USA Version
Stereo Australia / Europe Version
87.5 ~ 108.0 MHz
87.5 ~ 108.0 MHz
100 KHz
50 KHz
2 uV (17.2 dBf)
3 uV (20.8 dBf)
60 dB
60 dB
55 dB
55 dB
FM Tuner Section
(FM ANT Impedance : 75 ohms)
Power output at 10%THD(RMS)
Model
HV-7852UX
HV-7852HUX
Front
50 W, 8 ohm
Woofer
100 W, 4 ohm
Power supply
Operating Voltage AC 100 - 240 V, 50/60 Hz
Power consumption Standby : under 1 Watt
Operating : 38 Watt
Dimensions(WxDxH) / Weight 280 x 323.5 x 133.5 mm / 3.5 kg
Amp. Section
at 1 KHz, 8 ohms
at 1 KHz, 1 W
AUX
Tape Rec.
at 1 W : VIDEO -3 dB
DVD
1 KHz
50 W
0.3 %
400 mV / 47 K
200 mV / 2.2 K
100 Hz ~ 20 KHz
70 dB
120 Hz
50 dB
Front Amp
Power Output at 10% THD(RMS)
S/N Ratio IHF-A Weighted
Frequency Response
at 60 Hz, 4 ohms
1 W
100 W
60 dB
20 Hz ~ 100 Hz
Woofer
Power output Table

Location of Users Controls
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Front Panel
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Rear Panel
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Display
1. OPEN/CLOSE ( ) button
2. PLAY ( ) button
3. STOP ( ) button
4. PREV ( ) button
5. NEXT ( ) button
6. FUNCTION button (DVD TUNER
USB OPTICAL AUX
AUDIO IN DVD )
7. STANDBY indicator
8. STANDBY/ON button
9. Jack cover
10. AUDIO IN Port (behind the jack
cover)
11. USB Port (behind the jack cover)
12. Display
13. DISC Tray
14. Remote control sensor
15. VOLUME -/+ control
16. PHONES jack
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815
16
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9
10 11
2 3 4
12 1413
5 6
1. DOLBY DIGITAL indicator
2. TITLE indicator
3. DVD indicator
4. CHAPTER indicator
5. VCD indicator
6. TRACK indicator
7. MP3 indicator
8. DSP indicator
9. DRC indicator
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2119
1. Power cord
2. Region Code
3. FM ANTENNA connector
4. AUX jacks
5. SCART jack (Option)
6. FRONT SPEAKER connectors
7. SUB WOOFER SPEAKER
connectors
8. MONITOR OUTPUT jack
9. COMPONENT VIDEO OUTPUT
(Y/Pb/Pr) jacks
10. OPTICAL INPUT jack
11. HDMI OUTPUT jack (Option)
5
4
1
6 7 8 910 11
2 3
10. SLEEP indicator
11. STEREO indicator
12. REPEAT indicator
13. RANDOM indicator
14. ALL indicator
15. TOTAL indicator
16. MUTE indicator
17. REMAIN indicator
18. PBC(Playback Control) indicator
19. EQ indicator
20. PROGRESSIVE indicator
21. RDS indicator
22. PLAY indicator
23. PAUSE indicator
24. FM Band indicator
25. Multi-Function Information
Displaying Area

Location of Users Controls
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●
Remote Controller
1. POWER ON/STANDBY button : Switches the unit ON or OFF.
2. OPEN/CLOSE button : Ejects or inserts disc from the slot loader.
Selects video signal scan mode.
3. DVD/TV SYSTEM(PAL/NTSC: DVD only) button : Selects a DISC mode or change the video
signal type(PAL/NTSC)
4. PROGRESSIVE/INTERLACE Scan button
5. MUTE button : Turns the sound on and off temporarily.
6. TUNER button : Selects a FM broadcast.
7. DIGITAL button : Selects a digital device(USB or OPTICAL Input) function.
8. AUDIO button : Selects an AUX(AUDIO IN or AUX) function.
9. Number(0~9) buttons : Enter the number directry.
10. STOP (
■
)/BAND button : To stop the playback/Selects a FM broadcast.
11. PLAY (
▶
) button : Starts playback.
12. PAUSE/STEP (
II
) button : Pauses playback temporarily/Step playback
13. SKIP PREV/NEXT ( / ) button : Go to previous or next chapter or track.
14. FAST REVERSE/FORWARD (
◀◀
/
▶▶
) button : Search for backward/forward.
15. VOLUME up/down (∧∧/∨∨) button : Adjusts speaker volume.
16. ENTER button : Confirms menu or item selections.
17. Direction (∧∧, ∨∨,
‹‹
,
››
) buttons : Selects an option in the menu or Smart NAVI or Setup screen.
18. MENU/RETURN button : Accesses menu on a DVD disc.
19. SETUP button : Accesses or removes Setup menu.
20. DISPLAY/FM MODE button : Accesses On-Screen Display/Selects a Mono or Stereo FM
broadcast.
21. PGM/AUTO MEMORY button : Stores a radio station’s frequency in the tuner’s memory
automatically/Accesses or removes program menu.
22. REPEAT/RDS MODE button : Repeat chapter, track, title or all/Selects a RDS mode
23. A-B Repeat/PTY SEARCH button : Repeats sequence between two points (A and B)/Search a
Program Type for RDS.
24. RANDOM button : Switches the randome playback.
25. INTRO button : Switches the intro playback.
26. LANGUAGE button : Selects an audio language or audio channel.
27. UBS button : Switches the Bass Boost sound effect ON or OFF.
28. EQ button : Selects an EQ sound mode.
29. GOTO button : Accesses Goto mode.
30. SUBTITLE/MPX button : Selects a subtitle language or MPX mode.
31. ANGLE/DIGEST button : Selects a camera angle/Accesses Digest menu.
32. TITLE/PBC button : Displays the disc’s Title menu, if available/Accesses PBC menu on a VCD
disc.
33. SLOW button : Go to next or previous chapter or track.
34. SOUND MODE button : Selects a 3D sound mode.
35. CH-LEVEL button : Adjusts channel level.
36. SLEEP button : Set the system to turn off automatically at a specified time.
37. ZOOM button : Enlarges video image.
MENU/
RETURN
DISPLAY
FM MODE AUTO
MEMORY
PGM
SETUP
INTRORANDOM
ZOOMSLEEP CH. LEVELSOUND MODE
LANGUAGE
SLOW
GOTO
TITLE
PBC
REPEAT
RDS MODE
SUBTITLE
MPX
UBS
A-B
PTY SEARCH
EQ
ANGLE
DIGEST
STANDBY/ON OPEN/CLOSE
PROGRESSIVE
1 2
0
3
4 5 6
7 8 9
MUTE
DVD
(TV SYS)
TUNER
DIGITAL
AUDIO
STOP PLAY PAUSE/STEP
VOL
ENTER
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Connecting to Equipment
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Connecting to TV
●
21-Pin SCART Cable(not included) to 21-pin SCART input terminal on TV
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SCART Specification : Composite and Component Video output(DVD, Video)Audio L/R Output(DVD only)
●
Connecting to speakers
To Cr/Pr video input
To SCART input
for EU version: optional
To HDMI input
for HD version: optional
To Cb/Pb video input
To Y video input
●
If the TV or monitor is equipped with an S video input, make the S video connection in addition to the normal video connection.
The S video connection will provide higher quality picture playback.
●
HDMI Connector :
- HDMI (High Definition Multimedia Interface) supports both video and audio on a single digital connection for use with DVD Players, Set-Top Boxes, and
other AV devices.
- If you have a HDMI TV or monitor, you can connect it to this unit using a HDMI cable.
- When you use HDMI connection, you can change the resolution (480p, 720p, 1080i, or 1080p) for the HDMI output by setting the RESOLUTION in
SETUP function.
◆
Before connecting
●
This machine is designed to reproduce optimum sound quality when
speakers with the specified impedance below are connected. Please
check the following information and choose speakers with appropriate
impedance for the connections.
Front speakers : 8 ohms min. per speaker
Woofer speaker : 4 ohms min.
●
To prevent damage to circuits, never short-circuit the positive (+) and
negative (-) speaker wires.
●
Do not connect the speaker cable to the L and R connectors at the same time
and do not connect more than one speaker to the same speaker connectors.
Right speaker
Subwoofer speaker
Left speaker
R L R L
NO!
NO!NO!

Connecting to Equipment
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Connecting the supplied FM antennas
●
Connecting the USB device of Fresh memory type
●
Connecting to Audio Equipment
◆
Adjusting the position of the FM antenna
While listening to an FM program, extend the antenna and move it in
various directions until the clearest signal is received, then secure the
antenna with push pins in the position with the least distortion.
◆
Before connecting
●
Refer also to the instruction manual of each USB Device to be connected.
●
Connect the plugs securely.
◆
After connecting
●
Before using the USB devices, press DIGITAL button on remote controller
to enter USB device mode.
USB function works only under the condition that the display shows “USB”
at USB device mode. (located on the front side of the unit,
behind the jack cover)
(located on the front side of the unit,
behind the jack cover)
●
Connecting to Audio/Video Equipment
◆
Before connecting
●
Refer also to the instruction manual of each component to be
connected.
●
When you connect the machine to audio/video equipment, be sure to
turn off the power and unplug all the units from the wall outlets before
making any connections.
●
Connect the plugs securely.
To video input
To audio output

Connecting to Equipment
44
●
Assembling the speaker
Case 1
Fasten
Loosen
Fit
Fit
Fit
Case 2
Fasten
Loosen
Fit
Fit

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Firmware Upgrade
●
Preparing the firmware upgrade
●
Activating the firmware upgrade
1. Copy a USB device to update file.
2. A size of dummy folder is more 10M bytes.
(ex : MP3 file or attached picture)
3. Put firmware file in an USB device an USB
function.
• Firmware filename
HV7852UX(without HDMI) : A7852UH5.ROM
HV7852HUX(with HDMI) : A7852UHP5.ROM
<Update by USB device>
Insert the USB device in the USB function, and update the
firmware itself.
Note :
• Before using the USB device, select USB function.
• Connection & Resolution Mode
Connection : Connect between Monitor Output and a TV
Resolution on the Setup Menu : SD PROGRESSIVE
●
Starting update.
1. Detect the update file.
2. Display for update version.
DISC LOADING
FLASH A7842UHP5.ROM
(located on the front side of the unit,
behind the jack cover)

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Firmware Upgrade
• While updating, if the DISC tray opened or closed by touch, or STANDBY/ON button is pressed, the flash
memory will be damaged (same as USB device).
• Must be press “Default” or “Reset” on the Setup Menu, finished update new firmware.
• Must be update under “SD PROGRESSIVE” mode.
●
Read the USB device, checksum check and update new firmware.
●
Completed update.
Caution
1. Automatically Video Output off, after complete update.
2. Remove the USB device.
3. Press STANDBY/ON button twice (off 󱈓󱈓on)
4. The machine is working.
●
Check the Update Version.
1. Open the DISC tray.
2. Press LANGUAGE button or SUBTITLE button.
• LANGUAGE button : Check for MPEG firmware version.
• SUBTITLE button : Check for Loader firmware version.
READING OK FLASH
CHECKSUM OK ERASE/WRITE
DONE

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Code Free Method & EEPROM Reset
●
Preparing the Code free method
1. Press “OPEN” button.
2. Press “SETUP” button.
3. Press number button.
(5 󱈓󱈓4 󱈓󱈓2 󱈓󱈓5)
4. You can see window for code free.
5. Press “ENTER” or “Right Arrow”
button.
6. Select region number.
7. Press “Left Arrow” button.
8. If you press “SETUP”, the setting
of code free is finished.
9. Turn off the machine, then try
turning it on again.
●
EEPROM Reset
Use Only this case : change flash memory
1. Open the DISC tray.
2. Press “SETUP” button.
3. Press number button (2 󱈓󱈓5 󱈓󱈓8 󱈓󱈓0)
4. Display as follows,
“EEPROM CLEAR”
• Power off 󱈓󱈓Power on
• Check Region Code.
• Check Video Mode.
Notice

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Trouble Shooting Guide
START
BASIC OPERATING
Is Standby
LED on?
Turn Power on.
Is Power on?
Does Initial
read work?
Does It Play?
Does It Output
Audio?
OK
Check Power Supply Circuit.
Check Connection CN701.
Check IC703 (PM0608D).
Check Standby Section in the SMPS
Check DVD Mechanism.
Check Power Supply Section.
Check DVD Region.
Check Mpeg Circuit IC501.
Check Audio Section.
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes

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Trouble Shooting Guide
Yes
1
2
START
1. INITIAL OPERATING
Check Connection CN701.
Check Power Supply.
Is Supply
S_5.3V?
Is Standby
LED on?
Is Power on?
Check if
display the
Logo on TV.
Check
interface of
VFD Driver
Initial Operation OK.
Check VFD Data Interface.
VFD_DATA/CLK.
Replace Front PCB Ass'y.
Check data line between IC501
and 601.
Replace Flash Memory & SDRAM.
No
No
No
No
No
Yes
Yes
Yes
Yes

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Trouble Shooting Guide
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2
Check if SG1
of IC501(192)
is high?
Check OSC
waveform of
XC701.
Replace XC701.
Replace IC501.
Check if
pwr_on(6) of
IC703 is high?
No
No
No
Yes
Yes
Yes

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Trouble Shooting Guide
OK
Yes
1
2
3
4
Audio Abnormal of
DVD Function
USB Function.
Digital Audio Input Function.
AUX Function.
TUNER Function.
3. AUDIO Abnormal
Check if the I2S
output of IC501
is ok?
Check if the I2S
input of IC801
is ok?
Check if the
PWM output of
IC801 is ok?
Check if
suppled power
is ok?
Check if the
PWM output of
Digital Amp is
ok?
Check if the
Power down of
Digital Amp is
ok?
Check LPF L801 to L812.
Check AMP_PD of IC201.
Check Bias Voltge 3.3V of IC804, IC807.
Check short between Signal to GND or VCC.
Check Supplied Power
3.3V.
Check Resister
HR801 ~ HR804.
Replace IC501.
Check if
Speaker Output
is ok?
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes

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Trouble Shooting Guide
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Yes
Audio Abnormal of Digital
Audio Input Function USB INPUT
3. AUDIO Abnormal
Check if the
Input Select is
ok?
Check if the
Data interface
is ok?
Replace IC501.
Check USB PCB.
Replace J702.
Check IC501 SPDIF input.
Check pin 98, 99 of IC501.
Replace IC501.
Check if the
data of CN501
is ok?
Check if the
USB input of
IC501 is ok?
No
No
No
No
Yes
Yes
Yes

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Trouble Shooting Guide
2
Audio Abnormal of Digital
Audio Input Function OPTICAL INPUT
3. AUDIO Abnormal
Check if the
Input Select is
ok?
Check if the
Data interface
is ok?
Replace IC501
No
No
Yes
Yes

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Trouble Shooting Guide
Yes
Yes
3
Yes
Yes
Audio Abnormal of
AUX Input Function
3. AUDIO Abnormal
Check if the
Analog output
of IC404 is ok?
Check if the
Analog Output
of IC401 is
ok?
Check if the
I2S Output of
IC803 is ok?
Check if the
I2S Input of
IC801 is ok?
Check the Signal Input of OPAMP.
Replace IC404 (OPAMP).
Check Input Port of MUX
(CE405, CE406).
Replace IC803(ADC).
Check Resister.
HR805~807, HR878
No
No
No
No