Daewoo DV-125 Service Manual

DV-115/125

1. SPECIFICATIONS

2. LOCATION OF USERS CONTROLS

-. FRONT PANEL.

1) DV-115 FRONT PANEL.

2) DV-125 FRONT PANEL.

-. REAR PANEL.

-. DISPLAY.

-. REMOTE CONTROLLER.

3. CONNECTING TO EQUIPMENT.

-. CONNECTING TO TV.

-. CONNECTING TO AUDIO & VIDEO.

-. CONNECTING TO SPEAKER.

-. CONNECTING TO RECORDING EQUIPMENT.

4. TROUBLE SHOOTING GUIDE.

5. DVD PROGRAM DOWNLOAD METHOD.

6. WAVEFORMS OF MAJOR CHECK POINT.

-. AUDIO OUT SIGNAL WAVEFORM.

-. DAC OUTPUT SIGNAL WAVEFORM.

-. OPTICAL OUTPUT AUDIO DATA SIGNALFORM.

-. L/R CLOCK DATA WAVEFORM DURING NORMAL PLAY.

-. SERIAL DATA OUTPUT WAVEFORM DURING NORMAL PLAY.

-. Cr OUTPUT DATA WAVEFORM IN COMPONENT OUTPUT.

-. Cb OUTPUT DATA WAVEFORM IN COMPONENT OUTPUT.

-. Y OUTPUT DATA WAVEFORM IN COMPONENT OUTPUT.

7. INTERNAL BLOCK DIAGRAM OF ICS.

8. IC VOLTAGE CHART.

9. SCHENATIC DIAGRAM.

-. BLOCK DIAGRAM.

-. FRONT SCHEMATIC DIAGRAM.

1) DV-115 FRONT SCHEMATIC DIAGRAM.

2) DV-125 FRONT SCHEMATIC DIAGRAM.

-. DSP SCHEMATIC DIAGRAM.

-. MPEG SCHEMATIC DIAGRAM.

-. MAIN SCHEMATIC DIAGRAM.

1) POWER SCHEMATIC DIAGRAM.

2) AMP SCHEMATIC DIAGRAM.

3) INPUT SCHEMATIC DIAGRAM.

4) VIDEO SCHEMATIC DIAGRAM.

-. WIRING DIAGRAM.

1) DV-115 WIRING DIAGRAM.

2) DV-125 WIRING DIAGRAM.

-. LEVEL DIAGRAM.

10. PRINTED CIRCUIT DIAGRAM.

-. DV-115 FRONT PCB.

1) TOP VIEW.

2) BOTTOM VIEW.

-. DV-125 FRONT PCB.

1) TOP VIEW.

2) BOTTOM VIEW.

-. DSP PCB.

1) TOP VIEW.

2) BOTTOM VIEW.

-. MPEG PCB.

1) TOP VIEW.

2) BOTTOM VIEW.

-. MAIN PCB.

11. MECHANISM.

12. EXPLODED VIEW.

13. PARTS LIST.

Contents

1. Safety Precautions 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 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 CORRESPON­DANTE 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

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 antenna­discharge 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

3 4

1. Specifications

Model : DV-115

2. Location of Users Controls

Model : DV-115

-. Front Panel

1) DV-115

1. POWER ON/OFF switch

2. STANDBY indicator

3. STANDBY/ON button

4. SKIP/SEARCH DOWN ( ) button

5. PLAY ( ) button

6. SKIP/SEARCH UP ( ) button

7. PAUSE ( ) button

8. STOP ( ) button

9. DVD/VIDEO CD/MP3 CD/audio CD disc tray

10. OPEN/CLOSE ( ) button

11. Remote control sensor

12. Input selector :
VIDEO 1, VIDEO 2, TAPE/MD, TV buttons

13. Input selector : DVD buttons

14. Display

15. Input selector : TUNER buttons

16. MASTER VOLUME control

17. PHONES jack

18. TUNE/PRESET button

19. FM MODE button

20. TONE button

21. SURROUND MODE button

22. ENTER button

23. MOVE UP( ) button

24. MOVE LEFT( ) button

25. MOVE DOWN( ) button

26. MOVE RIGHT( ) button

27. MENU button

28. MIC jack(Option)

29. ECHO LEVEL control(Option)

30. MIC VOL control(Option)

Output Level / Impedance C-Video(Video1 Rec, Monitor) 1Vp-p/75 ohms ± 0.5dB

FM Tuner Section FM ANT Impedance : 75 ohms

MW(AM) Tuner Section

Front Amp. Section

Center Amp Section

Rear Amp Section

Video Section

General Specifications

5 6

EDR-700S

1. POWER ON/OFF switch

2. STANDBY indicator

3. STANDBY/ON button

4. DVD/VIDEO CD/MP3 CD/audio CD disc tray

5. Remote control sensor

6. OPEN/CLOSE ( ) button

7. Display

8. MIC LEVEL control

9. MENU button

10. TUNING/PRESET button

11. FM MODE button

12. TONE button

13. SURROUND MODE button

14. PHONES jack

15. SKIP/SEARCH DOWN ( ) button

16. PLAY ( ) button

17. PAUSE ( ) button

18. SKIP/SEARCH UP ( ) button

19. STOP ( ) button

20. Input selector :
VIDEO 1, VIDEO 2, TAPE/MD, TV buttons

21. Input selector : DVD buttons

22. Input selector : TUNER buttons

23. MOVE UP( ) button

24. MOVE LEFT( ) button

25. MOVE DOWN( ) button

26. MOVE RIGHT( ) button

27. ENTER button

28. MIC jack(Option)

29. MASTER VOLUME control

2) DV-115

Power Supply Power Consumption
Voltage(Option) Operating 160Watt

AC 110V or 120V or 127V or Demensions(W X D X H)/Weight
220V or 230V or 240V(50/60Hz) 430 X 380 X 97mm/9.2kg

Power Output at 0.2% THD At 1KHz 6 ohms 30W X 2
Total Harmonic Distortion At 1KHz 1 W 0.3%
Input Sen./Impedance @ 1KHz, 47K ohms TV , Tape/MD 200mV ± 30/47K
Output Level / Impedance @ 1KHz Tape Rec 200mV ± 30/2.2K
Frequency Response at 1W : TV, Tape/MD -3dB 20 ~ 50KHz
S/N Ratio IHF-A Weighted TV , Tape/MD 90dB
Subwoofer Turnover Frequency 120Hz
Channel Separation 1KHz 45dB
Crosstalk Tape/MD --> TV 60dB

Power Output at 0.2% THD At 1KHz 6 ohms 30W
Total Harmonic Distortion At 1KHz 1W 0.3%
S/N Ratio IHF-A Weighted Rated Output 55dB
Frequency Response Large 1W 30 ~ 20KHz
Dolby Mode Small 1W 120 ~ 20KHz

Power Output at 0.2% THD At 1KHz 6 ohms 30W X 2
Total Harmonic Distortion At 1KHz 1 W 1.0%
S/N Ratio Dolby Rated Output 55dB
Frequency Response(Only Dolby) ± 3dB 1W 120 ~ 6KHz

Input Sen./Impedance Composite Video(Video1, Video2) 1Vp-p/75 ohms ± 0.5dB

TV --> Tape/MD 60dB

S-Video(DVD Only) Y:1Vp-p/75 ohms, negative sync. ± 0.5dB

C: 0.286Vp-p/75 ohms ± 0.5dB

Component Out(DVD Only) Y:1Vp-p/75 ohms, negative sync. ± 0.5dB

Frequency Response 5MHz ~ 6NHz + 0/-3dB + 0/-3dB
Crosstalk @ 1MHz 45dB 40dB
S/N Ratio 45dB 40dB

Tuning Range USA Version 87.5 ~ 108MHz

Multi Europe Version 87.5 ~ 108MHz

Frequency Step USA Version 100KHz

Multi Version 50KHz / 100KHz

Usable Sens. 75 ohms S/N 30dB USA Version 2uV(17.2dBf)

S/N Ratio @ 1mV IHF-A Mono USA Version 70dB

Tuning Range USA Version 530 ~ 1710kHz

Frequency Step USA Version 10KHz

Usable Sensitivity 1000/999KHz S/N 20dB 800uV/m
S/N Ratio 400Hz, 30%Mod, 1000KHz(10mV Input) 40dB

Europe Version 50KHz

S/N 26dB Europe Version 3uV(20.8dBf)

Mono Europe Version 70dB
Stereo USA Version 65dB
Stereo Europe Version 63dB

Europe Version 522 ~ 1620kHz

Multi Version 10 / 9KHz
Europe Version 9KHz

Cr, Cb: 0.7Vp-p/75 ohms ± 0.5dB

2. Location of Users Controls

Model : DV-115

-. Rear Panel

1. FM ANTENNA connector

2. AM ANTENNA connectors

3. DIGITAL INPUT OPTICAL jack

4. DIGITAL INPUT COAXIAL jack

5. DIGITAL OUTPUT OPTICAL jack

6. PRE OUT SUBWOOFER jack

7. MONITOR OUT jack

8. S VIDEO MONITOR OUT jack

9. COMPONENT VIDEO OUTPUT Y/Cb/Cr jacks

10. Power cord

11. CENTER SPEAKER connectors

12. SURROUND SPEAKERS connectors

13. FRONT SPEAKERS connectors

14. TV IN jacks

15. TAPE/MD IN PLAY(IN)/REC(REC) jacks

16. VIDEO 2 IN jacks

17. VIDEO 1 PLAY(IN)/REC(OUT) jack

18. AC outlet

-. Display

1. SURROUND MODE indicator

2. RDS indicator

3. PROGRAM indicator

4. STEREO indicator

5. DYNAMIC RANGE indicator

6. TUNED indicator

7. PBC(Playback Control) indicator

8. MEMORY indicator

9. MP3 indicator

10. PRESET indicator

11. REPEAT indicator

12. RANDOM indicator

13. SLEEP indicator

14. PLAY indicator

15. DVD/VCD/CD indicator

16. PAUSE indicator

17. MULTI FUNCTION indicator

18. SPEAKER CONFIGURATION indicator

2. Location of Users Controls

Model : DV-115

-. Remote Controller

1. STANDBY/ON button

2. DVD FUNCTION button

3. TUNER FUNCTION button

4. SPEAKER SETUP button

5. INPUT SELECTOR: TV/TAPE/VIDEO 1
/VIDEO 2 button

6. SET UP button

7. SEARCH button

8. MENU/PBC RETURN button

9. Number buttons

10. CLEAR button

11. PLAY ( ) button

12. PAUSE ( ) button

13. VOLUME buttons

14. FAST REWIND(FR) ( ) button

15. FAST FORWARD(FF) ( ) button

16. SUBTITLE button

17. GAME button

18. ZOOM button

19. DISPLAY button

20. D-RANGE(Dynamic Range) button

21. FM MODE button

22. DIMMER button

23. TEST TONE button

24. REPEAT/PTY button

25. RANDOM/RDS button

26. TUNER PRESET buttons

27. CH LEVEL button

28. MOVE /ENTER buttons

29. DELAY TIME button

30. TONE button

31. MEMORY button

32. TITLE button

33. PLAY MODE button

34. STOP( ) button

35. OPEN/CLOSE button

36. SKIP/SEARCH DOWN ( ) button

37. SKIP/SEARCH UP ( ) button

38. AUDIO button

39. SLOW button

40. ANGLE button

41. A-B REPEAT button

42. CINEMA BASS button

43. SURROUND MODE button

44. SLEEP button

45. MUTING button

46. PBC/RT button

47. MPX button

/ / /

/

87

3. Connecting to Equipment

Model : DV-115

-. Connecting to TV

Scart Cable : Optional

3. Connecting to Equipment

Model : DV-115

-. Connecting to AUDIO & VIDEO

9 10

Remove the
protective caps
before making
connections. When
not in use, be sure
to replace them.