Daewoo HC-7230UX Series User manual

Digital Home Cinema System
SN: 9CD8305700
Mar. 2008
Model : HC-7230UX Series
123
456
789
10
+
1
0
MUTE
REPEAT
PBCRETURNSTEPSLOW
PREVNEXTREVFWD
ZOOMTITLE
SETUPMENU
ENTER
PLAY/PAUSESTOP/BAND
-+
VOLUME
DISPLAY
PROG
ANGLE
LANGUAGE
DPLIIMODE
FUNCTION
RDS
SUBTITLE
AUTO/MEMORY
SEARCH
FMMODE
A-B
P/ISCANP/NR/L
TUNING+
TUNING-
POWEROPEN/CLOSE
HC-7230UX

Table of Contents
DIGITAL HOME CINEMA SYSTEM
Model : HC-7230UX Series
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 Speaker
●
Connecting to Audio & Video
●
Connecting the supplied FM antennas (option)
●
Connecting the USB device of Fresh memory type (option)
●
Connecting the Microphone for KARAOKE
FIRMWARE UPGRADE .................................................. 5
INTERNAL BLOCK DIAGRAM OF ICs .......................... 6
EXPLODED VIEW AND MECHANICAL PARTS LIST ....... 7
●
Mechanical Exploded View / Parts list
WIRING DIAGRAM ......................................................... 8
SCHEMATIC DIAGRAM ................................................. 9
●
FRONT Section
●
POWER + AMP Section 1 : SMPS
●
POWER + AMP Section 2 : VR
●
POWER + AMP Section 3 : MP 7782
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POWER + AMP Section 4 : MP 7722
●
MPEG Section 1 - MPEG Processor
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MPEG Section 2 - Power
●
MPEG Section 3 - ROM/FLASH/Memory
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MPEG Section 4 - Motor Driver
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MPEG Section 5 - Video Buffer
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MPEG Section 6 - Audio Filter
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MPEG Section 7 - Tuner (option)
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MPEG Section 8 - AV Switch
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MPEG Section 9 - External ADC
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MPEG Section 10 - Audio Input
P.C.B PATTERN LAYOUT ........................................... 10
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FRONT
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MPEG
●
POWER + AMP
Appendix ELECTRICAL PARTS LIST............................... 11
●
Electrical Parts 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)
Frequency Response(Analogue)
S/N Ratio, IHF-A Weighted
Subwoofer Turnover Frequency
Channel Separation
At 1 KHz, 8 ohms
At 1 KHz, 1 W
1 W
CD PLAY
1 KHz
30 W
0.5 %
100 Hz ~ 20 KHz
>55 dB
120 Hz
50 dB
General specifications
Front Amp. Section
Front Amp.
Power Output at 10% THD(RMS)
THD(Total Harmonic Distortion)
S/N Ratio, IHF-A Filter
Frequency Response
At 1 KHz, 8 ohms
At 1 KHz, 1 W
Rated Output
1 W
30 W
0.5 %
>55 dB
135 Hz ~ 18 KHz
Center Amp.
Power Output at 10% THD(RMS)
THD(Total Harmonic Distortion)
S/N Ratio, DOLBY
Frequency Response
At 1 KHz, 8 ohms
At 1 KHz, 1 W
Rated Output
1 W
30 W
0.5 %
>55 dB
135 Hz ~ 18 KHz
Rear Amp.
Power Output at 10% THD(RMS)
Frequency Response
S/N Ratio, IHF-A Weighted
At 100 Hz, 6 ohms
1 W 50 W 20 Hz ~ 150 Hz
>50 dB
Woofer
Composite 75 ohm
S-Video(Y/C) 75 ohm(DVD only)
Component Out(Y/ Cb/ Cr) :Option
Ref 500KHz
@1MHz
DVD
1.0Vp-p/75 ohm
1Vp-p/ 0.286Vp-p
1Vp-p/0.7Vp-p/0.7Vp-p
45dB
60dB
0.5 dB
0.5 dB
0.5 dB
5Hz~5.7MHz
40dB
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=30dB, USA Version
S/N=26dB, Australia / Europe Version
Mono USA Version
Mono Australia / Europe Version
Stereo USA Version
Stereo Australia / Europe Version
87.5~108.0MHz
87.5~108.0MHz
100KHz
50KHz
2uV(17.2dBf)
3uV(20.8dBf)
55dB
55dB
50dB
50dB
FM Tuner Section (option)
(FM ANT Impedance : 75 ohms)
Power output at 10%THD(RMS)
Power supply
Operating Voltage ~ 100 V - 240 V, 50/60Hz
(Free Voltage)
Power consumption Operating 60 Watt
Dimensions (W x D x H) / Weight 430 x 316 x 52 mm / 3.24 kg
Model
HC-7230UX
Front / Center / Rear
30 W, 8 ohm
Woofer
50 W, 6 ohm

Location of Users Controls
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Front Panel
1 3 5687 2
10911 13 1412
4
HC-7230UX
1. DVD indicator
2. CD/VCD/S VCD indicator
3. AM(MW) indicator (option)
4. FM indicator (option)
5. STEREO indicator
6. PLAY/PAUSE indicator
7. MEMORY indicator
8. DOLBY DIGITAL indicator
9. MP3 indicator
10. RDS indicator(option)
11. Multi-Function Information Displaying Area
1. *LINE OUTPUT Jacks
2. Region Code
3. AUX INPUT jacks
4. COAXIAL OUTPUT Jack
5. COMPONENT VIDEO OUTPUT
(Y, Cb/Pb,Cr/Pr) jacks
6. VIDEO OUT jack
7. S VIDEO OUT jack
8. FM ANTENNA connector (option)
9. AM(MW) ANTENNA connectors (option)
10. *SCART jack (option)
11. SPEAKER connectors
12. Power cord
1. POWER ON/OFF push button
2. MIC 1 / MIC 2 jacks
3. MIC 1 / MIC 2 VOLUME Controls
4. DISC Tray
5. Remote Control Sensor
6. USB Port
7. Display
8. MASTER VOLUME Control
9. OPEN/CLOSE ( ) button
10. FUNCTION button
11. PLAY/PAUSE ( ) button
12. STOP ( )/BAND button
13. PREV ( ) button
14. NEXT ( ) button
* Choose stereo in DOWNMIX in speaker setup when using LINE OUTPUT or SCART Jack (option)
●
Rear Panel
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28 9 10 11
512
47
13
1 2 3 4 5 6 7 8 9
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11
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Display

Location of Users Controls
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1. POWER ON/STANDBY button
2. MUTE button
3. OPEN/CLOSE button
4. PBC button
5. RETURN button
6. STEP button
7. SLOW button
8. DISPLAY button
9. PROGRESSIVE/INTERLACE Scan button
10. TV SYSTEM(PAL/NTSC: DVD only) button
11. R/L button
12. Number(1~10, 10+) buttons
13. PROGRAM button
14. ANGLE button
15. LANGUAGE button
16. DOLBY PRO LOGIC II MODE button
17. REPEAT button
18. RDS/SUBTITLE button
19. FUNCTION button
20. AUTO MEMORY/SEARCH button
21. FM MODE/A-B REPEAT button
22. SETUP button
23. MENU button
24. Enter button
25. Direction( ) button
26. Direction( ) button
27. Direction( )/TUNING - button
28. Direction( )/TUNING + button
29. ZOOM button
30. TITLE button
31. SKIP PREV ( ) button
32. SKIP NEXT ( ) button
33. FAST REVERSE ( ) button
34. FAST FORWARD ( ) button
35. PLAY/PAUSE ( ) button
36. STOP ( )/BAND button
37. VOLUME - buttons
38. VOLUME + buttons
1 2 3
4 5 6
7 8 9
10 +10
MUTE
REPEAT
PBC RETURN STEP SLOW
PREV NEXT REV FWD
ZOOM TITLE
SETUP MENU
ENTER
PLAY/PAUSE STOP/BAND - + VOLUME
DISPLAY
PROG
ANGLE
LANGUAGE
DPLIIMODE
FUNCTION RDS
SUBTITLE
AUTO/MEMORY
SEARCH
FM MODE
A-B
P/I SCAN P/N R/L
TUNING+TUNING-
POWER OPEN/CLOSE
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Remote Controller

Connecting to Equipment
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Connecting to TV
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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)
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Connecting speakers
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To prevent damage to circuits, never short-circuit the positive (+) and negative (-) speaker wires.
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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.
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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.
◆
Before connecting
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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 / Center speaker / Surround Speakers : 6 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.
for EU version: optional
Surround speakerSurround speaker
Center speaker
Woofer speaker
Front speaker
Left ch.
Front speaker
Right ch.
Left ch.Right ch.

White
Black
Connecting to Equipment
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●
Connecting the supplied FM/MW(AM) antennas (option)
◆
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.
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Before using the USB devices, make sure there is no disc on the machine.
USB function works only under the condition that the display shows “NO DISC” at DVD function mode.
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Connect the plugs securely.
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Connecting the USB device of Fresh memory type (option)
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Connecting the Microphone for KARAOKE

Firmware Upgrade
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Preparing the Firmware Upgrade
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Activating the Firmware Upgrade
1. Write a disc to Update file by PC Writing Program.
2. A size of dummy folder is more than 10M bite. (ex : font_dw, attached picture)
3. Put Firmware file (DVDROM.BIN) in a disc.
1. Open the Door of DVD Receiver.
2. Insert the Update Disc into the Disc Tray.
3. Close the Door, then DVD Receiver reads the disc, and Update the Firmware itself.
DISC LOADING

Internal Block Diagram of ICs
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74HC4052
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74L24
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EL817
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NJM4558M
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TL431

Internal Block Diagram of ICs
15
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MP7722
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CE2826
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LD1117ADT-R
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M29W800DB
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MP7782

Internal Block Diagram of ICs
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1515
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24C04
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AM5888S
VP1
DVDD
DVSS
MUX
CIN
AVDD
VREF
AVSS
SCOUT
OSC1 OSC2
QUAL
RDDA
RDCL
T57
TESTMODE
Anti-Aliasing
Filter
Reconstruction
Filter
Quality Bit
Generator
Defferential
Decoder
Reference
Voltage
Clocked
Comparator
57kHz
Band Pass
(8th Order)
Clock
Regeneration
& Sync
Test Logic &
Output Selector
Switch
Oscillation
&
Divider
Biphase
Symbol
Decoder
Costas Loop
Variable &
Fixed Divider
●
PT2579 (RDS option)

Internal Block Diagram of ICs
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SPHE8281DE (with DOLBY PROLOGIC II)
SPHE8281D

Internal Block Diagram of ICs
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PT2258
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FSCQ0765RT

Exploded View and Mechanical Parts List
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Exploded View and Mechanical Parts List

Wiring Diagram
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(option)

Schematic Diagram
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●FRONT Section ●POWER + AMP Section 1 : SMPS

Schematic Diagram
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●POWER + AMP Section 2 : VR
●POWER + AMP Section 3 : MP 7782