Daewoo Hc 4250 Service Manual

							Service Manual
S/N No. :  
FEB. 2004
DAEWOO DAT CO., LTD.
Mini Component System
Model:  
Digital Home Cinema System
HC-4100B/4200B Series
HC-4130( ) / HC-4230( )
HC-4150( ) / HC-4250( )
HC-4160( ) / HC-4260( )
HC-4180( ) / HC-4280( )
9CD8302601
JUN. 2004
HC-4100( ) Series
HC-4200( ) Series
 
						

							1. SAFETY PRECAUTIONS......................................................1/2
2. SPECIFICATIONS....................................................................3
3. LOCATION OF USERS CONTROLS....................................4/6
FRONT PANELREAR PANELDISPLAYREMOTE CONTROLLER
4. CONNECTING TO EQUIPMENT...........................................7/8CONNECTING TO TVCONNECTING TO AUDIO & VIDEOCONNECTING TO SPEAKERCONNECTING TO RECORDING EQUIPMENT
5. FIRMWARE UPGRADE .....................................................9/10
6. TROUBLE SHOOTING GUIDE.........................................11/26
7. WAVEFORMS OF MAJOR CHECK POINT......................27/31
AUDIO OUT SIGNAL WAVEFORMDAC OUTPUT SIGNAL WAVEFORMOPTICAL OUTPUT AUDIO DATA SIGNALFORML/R CLOCK DATA WAVEFORM DURING NORMAL PLAYSERIAL DATA OUTPUT WAVEFORM DURING NORMAL PLAYPr OUTPUT DATA WAVEFORM IN COMPONENT OUTPUTPb OUTPUT DATA WAVEFORM IN COMPONENT OUTPUTY OUTPUT DATA WAVEFORM IN COMPONENT OUTPUTCOMPOSITEOUTPUT DATA WAVEFORM IN MONITOR OUTPUTS-VIDEO OUTPUT DATA WAVEFORM
8. INTERNAL BLOCK DIAGRAM OF ICs............................32/37
9. BLOCK DIAGRAM............................................................38/39
MAIN BLOCKSMPS
10. WIRING DIAGRAM..........................................................40/41
11. SCHEMATIC DIAGRAM..................................................42/51
DVD Processor SectionDVD RF SectionVideo & Analog Audio SectionDDX  SectionPWM Amp. SectionFront SectionSMPS
12. PRINTED CIRCUIT DIAGRAM........................................52/57FrontMainSMPS
13. EXPLODED VIEW AND MECHANICAL PARTS LIST ..58/61MECHANICAL EXPLODED VIEWMECHANICAL PARTS LIST
14. ELECTRICAL PARTS LIST......................................AppendixELECTRICAL PARTS  LISTELECTRICAL PARTS  LIST [OPTION LIST]
Contents
DIGITAL HOME CINEMA SYSTEM
HC4100( )/4200( ) Series
HC-4130( ) / 4150( ) / 4160( ) / 4180( )
HC-4230( ) / 4250( )  / 4260( ) / 4280( )
 
						

							1. Safety Precautions
WARNING: TO PREVENT FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE 
THIS APPLIANCE TO RAIN OR MOISTURE.
  CAUTION :TO REDUCE THE RISK IF 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 PRODUCTS 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 JUSQUAU 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 OPENPORTABLE CART 
Figure 2
1
 
						

							1. Safety Precautions
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
EQUIPMENTGROUNDING CONDUCTORS
(NEC SECTION 810-21)
GROUND CLAMPS
EXAMPLE OF ANTENNA 
GROUNDING 
NEC - NATIONAL ELECTRICAL CODE
2
 
						

							2. Specifications
3
HC-4130
HC-4230
HC-4150
HC-4250
HC-4160
HC-4260
HC-4180
HC-4280Model
30 W, 6 ohm
50 W, 6 ohm
60 W, 6 ohm
80 W, 6 ohm50 W, 6 ohm
80 W, 4 ohm
100 W, 4 ohm
120 W, 4 ohmSame to
“ ” Series
Power output at 10%THD(RMS)
Front/Center
/RearWooferRemark
Power output Table
AC 230V / 50Hz
Power supply
Operation Voltage
 
						

							3. Location of Users Controls
4
1. STANDBY/ON button with LED lamp
2. DISC TRAY
3. Remote Control Sensor
4. OPEN/CLOSE (      ) button
5. Display
6. PLAY (         ) button 7. STOP (      ) button 
8. PREV (          ) button 
9. NEXT (          ) button 
10. FUNCTION button 
11. MASTER VOLUME Control 
12. PHONES jack 
134678910125112
1. STANDBY/ON button with LED lamp
2. DISC TRAY
3. Display
4. Remote Control Sensor
5. OPEN/CLOSE (      ) button
6. PLAY (         ) button 7. STOP (      ) button 
8. FUNCTION button 
9. PREV (          ) button 
10. NEXT (          ) button 
11. MASTER VOLUME Control 
12. PHONES jack 
135671112
8910
24
Front Panel : HC-4100( ) Series Only
Front Panel : HC-4200( ) Series Only
 
						

							3. Location of Users Controls
5
1. DOLBY DIGITAL indicator
2. Pro Logic II indicator
3. DTS indicator
4. TITLE indicator
5. DVD indicator
6. CHAPTER indicator
7. VCD indicator
8. TRACK indicator
9. MP3 indicator
10. DSP indicator
11. DRC indicator
12. SLEEP indicator
13. STEREO indicator14. REPEAT indicator
15. RANDOM indicator
16. ALL indicator
17. TOTAL indicator
18. MUTE indicator
19. REMAIN indicator
20. PBC(Playback Control) indicator
21. EQ indicator
22. PBC(Playback Control) indicator
23. RDS indicator
24. PAUSE indicator
25. PLAY indicator
26. Multi-Function Information Displaying Area
1413151820212326810
357911121416171922
25
24
26
Rear Panel
Display
1. Power cord
2. FM ANTENNA connector 
3. SUBWOOFER SPEAKER connectors
4. CENTER SPEAKER connectors
5. REAR-L SPEAKER connectors 
6. REAR-R SPEAKER connectors 
7. FRONT-L SPEAKER connectors
8. FRONT-R SPEAKER connectors
9. DIGITAL INPUT jack
357124681112131518141716910
10. DIGITAL OUTPUT jackj
11. VIDEO IN jacks
12. VIDEO OUT jacks
13. S VIDEO MONITOR OUT jack
14. COAXIAL INPUT jack 
15. SUBWOOFER OUTPUT A/B connectors 
16. COMPONENT VIDEO OUTPUT Y/Pb/Pr jacks (Optional) 
17. MONITOR OUT jack
18. SCART jack
 
						

							6
3. Location of Users Controls
1. STANDBY/ON button 
2. OPEN/CLOSE button
3. MUTE button 
4. INPUT SELECTOR: DVD button/
TV SYSTEM(PAL/NTSC: DVD only) button
5. INPUT SELECTOR: VIDEO, TV/AUX button 
6. INPUT SELECTOR: TUNER button
7. FAST REVERSE(FR) (           ) button 
8. FAST FORWARD(FF) (           ) button
9. SKIP PREV (          ) button
10. SKIP NEXT (          ) button
11. Direction (                     ) buttons
12. Enter button 
13. PLAY (        ) button
14. VOLUME(         ) buttons
15. SETUP button
16. STOP(      ) button
17. MENU/RETURN button
18. PAUSE/STEP button 
19. GO TO/AUTO MEMORY button
20. PROGRESSIVE button
21. Number buttons(0~9)
22. CH-LEVEL button
23. DISPLAY/FM MODE button 
24. A-B REPEAT button
25. REPEAT button 
26. RANDOM/RDS button
27. SLOW button
28. EQ button
29. SURROUND MODE button
30. ZOOM button 
31. SLEEP button
32. SUBTITLE/MPX button
33. TITLE/PBC button
34. AUDIO/PTY SEARCH button
35. ANGLE/DIGEST button
ENTER
45
1
23
5
6
8
10
11
14
13
28
19
20
23
262730313435
4
7
9
11
12
11
11
13
15
16
17
18
21
22
2425
293233
 
Remote Controller
 
						

							4. Connecting to Equipment
7
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.
21-Pin SCART Cable(not included) to 21-pin SCART input terminal on TV
SCART Specification : Composite and Component Video output(DVD, Video)Audio L/R Output(DVD only)
Connecting to TV
Connecting to Audio & Video
for EU version: optional
To video input
To video outputTo audio input
To audio outputTo S video input
Audio/Video
connection
cable
S Video
connection cable
 
						

							Surround speaker
Surround speaker
Center speaker
Woofer speaker
Active subwoofer B
[USER Optional]
Audio Input
Front speakerLeft ch.Front speakerRight ch.
Left ch.
Right ch.Active subwoofer A
[USER Optional]
Audio Input
4. Connecting to Equipment
8
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 / Center speaker / Surround Speakers : 6 ohms min. per speaker
Woofer speaker : 4 ohm min. per speaker
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.
Connecting to Speaker
Connecting to Recoring Equipment
RED
BLUE
GREEN
GRAY BROWN
YELLOW