TEAC DV-4000 Service manual

MODEL
SERVICE MANUAL
DV-4000
CAUTION : Before servicing this chassis, read the "PRODUCT SAFETY SERVICE FOR VIDEO PRODUCTS" section on page 2 of this manual.
DVD and CD
POWER
ON/STANDBY
1
DVD PLAYER DV-4000
1 2 3 4 5 +5
MIC LEVEL
2
-
+
-
ECHOMIC
Digital Karaoke
+
STANDBY
PAL/NTSC
PLAY PAUSE STOP
1 2
RETURN REPEAT
3
R
DVD/VCD PLAYER
DISC
3
EXCHANGE
OPEN/CLOSE
DISC
DISC SKIP
SEARCH
PLAYER
SPECIFICATIONS CONTENTS
DVD VIDEO PLAYER
OUTPUTS
Video outputs S-video outputs
Audio outputs (digital audio) Audio outputs (analog audio)
GENERAL
Power supply Power consumption Dimensions Weight
PAL/AUTO/NTSC wavelength 650nm 20Hz to 20kHz
85dB
-80dB(1kHz) 70dB(1kHz) 85dB(1kHz)
1.0V(p-p), 75ohm, negative sync. (Y)1.0V(p-p), (C)0.286V(p-p) 75ohm, negative sync.
0.5V(p-p), 75ohm
2.0Vrams(1KHz,0.8dB), 10Kohm
AC240V, 50Hz
20W 435 x 335 x 105 (mm) Around 5kgs
SERVICE PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . 2-3
LOCATION OF CONTROLS . . . . . . . . . . . . . . . . . . . . . . 4-6
BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . 7
ELECTRICAL TROUBLE SHOOTING GUIDE . .. . . . . . 8-18
PRINTED CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-25
EXPLODED VIEW/PARTS LIST(CABINET) . . . . .. . . . . . 26
REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . .. . . 28-29
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS
CAUTION: DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY AND NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFACTURER'S APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY VOID THE WARRANTY, BUT MAY LEAD TO YOUR BEING LIABLE FOR ANY RESULTING PROPERTY DAMAGE OR USER INJURY.
SERVICE WORK SHOULD BE PERFORMED ONLY AFTER YOU ARE THOROUGHLY FAMILIAR WITH ALL OF THE FOLLOWING SAFETY CHECKS AND SERVICING GUIDELINES. TO DO OTHERWISE, INCREASES THE RISK OF POTENTIAL HAZARDS AND INJURY TO THE USER.
WHILE SERVICING, USE AN ISOLATION TRANSFORMER FOR PROTECTION FROM A.C. LINE SHOCK.
SAFETY CHECKS
AFTER THE ORIGINAL SERVICE PROBLEM HAS BEEN CORRECTED, A CHECK SHOULD BE MADE OF THE FOLLOWING.
SUBJECT: FIRE & SHOCK HAZARD
1. BE SURE THAT ALL COMPONENTS ARE POSITIONED IN SUCH A WAY AS TO AVOID POSSIBILITY OF ADJACENT COMPONENT SHORTS. THIS IS ESPECIALLY IMPORTANT ON THOSE MODULES WITCH ARE TRANSPORTED TO AND FROM THE REPAIR SHOP.
2. NEVER RELEASE A REPAIR UNLESS ALL PROTECTIVE DEVICES SUCH AS INSULATORS, BARRIERS, COVERS, SHIELDS, STRAIN RELIEFS, POWER SUPPLY CORDS, AND OTHER HARDWARE HAVE BEEN REINSTALLED PER ORIGINAL DESIGN. BE SURE THAT THE SAFETY PURPOSE OF THE POLARIZED LINE PLUG HAS NOT BEEN DEFEATED.
3. SOLDERING MUST BE INSPECTED TO DISCOVER POSSIBLE COLD SOLDER JOINTS, SOLDER SPLASHES OR SHARP SOLDER POINTS. BE CERTAIN TO REMOVE ALL LOOSE FOREIGN PARTICLES.
4. CHECK FOR PHYSICAL EVIDENCE DF DAMAGE OR DETERIORATION TO PARTS AND COMPONENTS, FOR FRAYED LEADS AND DAMAGED INSULATION (INCLUDING A.C. CORD), AND REPLACE IF NECESSARY FOLLOW ORIGINAL LAYOUT, LEAD LENGTH AND DRESS.
5. NO LEAD OR COMPONENT SHOULD TOUCH A RECEIVING TUBE OR A RESISTOR RATED AT 1 WATT OR MORE. LEAD TENSION AROUND PROTRUDING METAL SURFACES MUST BE AVOIDED.
6. ALL CRITICAL COMPONENTS SUCH AS FUSES. FLAMEPROOF RESISTORS, CAPACITORS, ETC. MUST BE REPLACED WITH EXACT FACTORY TYPES, DO NOT USE REPLACEMENT COMPONENTS OTHER THAN THOSE SPECIFIED OR MAKE UNRECOMMENDED CIRCUIT MODIFICATIONS.
7. AFTER RE-ASSEMBLY OF THE SET, ALWAYS PERFORM AN A.C. LEAKAGE TEST ON ALL EXPOSED METALLIC PARTS OF THE CABINET, (THE CHANNEL SELECTOR KNOB, ANTENNA TERMINALS. HANDLE AND SCREWS) TO BE SURE THE SET IS SAFE TO OPERATE WITHOUT DANGER OF ELECTRICAL SHOCK. DO NOT USE A LINE ISOLATION TRANSFORMER DURING THIS TEST, MAKE SURE TO USE AN A.C. VOLTMETER. HAVING 5000 OHMS PER VOLT OR MORE SENSITIVITY, IN THE FOLLOWING MANNER; CONNECT A 1500 OHMS 10 WATT RESISTOR, PARALLELED BY A.15 MFD. 150V A.C. TYPE CAPACITOR BETWEEN A KNOWN GOOD EARTH GROUND (WATER PIPE, CONDUIT, ETC.) AND THE EXPOSED METALLIC PARTS, ONE AT A TIME. MEASURE THE A.C. VOLTAGE ACROSS THE COMBINATION OF 1500 OHM RESISTOR AND 15 MFD CAPACITOR. REVERSE THE A.C. PLUG AND REPEAT A.C. ANY VOLTAGE MEASUREMENTS FOR EACH EXPOSED METALLIC PART. VOLTAGE MEASURED MUST NOT EXCEED 75 VOLTS R.M.S. THIS CORRESPONDS TO 0.5 MILLIAMP A.C. ANY VALUE EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED IMMEDIATELY.
GOOD EARTH GROUND SUCH AS THE WATER PIPE, CONDUIT, ETC.
PLACE THIS PROBE ON EACH EXPOSED METAL PART
SUBJECT 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.
SUBJECT: X-RADIATION
1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PERSONNEL COVER THE SUBJECT OF X-RAYS IN CURRENT T.V. RECEIVERS IS THE PICTURE TUBE. HOWEVER, THIS TUBE DOES NOT EMIT X-RYS WHEN THE HIGH VOLTAGE IS AT THE FACTORY SPECIFIED LEVEL. THE PROPER VALUE IS GIVEN IN THE APPLICABLE SCHEMATIC. OPERATION AT HIGHER VOLTAGES MAY CAUSE A FAILURE OF THE PICTURE TUBE OR HIGH VOLTAGE SUPPLY AND, UNDER CERTAIN CIRCUMSTANCES, MAY PRODUCE RADIATION IN EXCESS OF DESIRABLE LEVELS.
2. ONLY FACTORY SPECIFIED C.R.T ANODE CONNECTORS MUST BE USED.
DEGAUSSING SHIELDS ALSO SERVE AS AN X-RAY SHIELD IN COLOR SETS, ALWAYS RE-INSTALL THEM.
3. IT IS ESSENTIAL THAT SERVICE PERSONNEL HAVE AVAILABLE AN
ACCURATE AND RELIABLE HIGH VOLTAGE METER. THE CALIBRATION OF THE METER SHOULD BE CHECKED PERIODICALLY AGAINST A REFERENCE STANDARD, SUCH AS THE ONE AVAILABLE AT YOUR DISTRIBUTOR.
4. WHEN THE HIGH VOLTAGE CIRCUITRY IS OPERATING PROPERLY, THERE IS
NO POSSIBILITY OF AN CHASSIS IS SERVICED, THE BRIGHTNESS SHOULD BE RUN UP AND DOWN WHILE MONITORING THE HIGH VOLTAGE WITH A METER TO BE CERTAIN THAT THE HIGH VOLTAGE DOES NOT EXCEED THE SPECIFIED VALUE AND THAT IT IS REGULATING CORRECTLY. WE SUGGEST THAT YOU AND YOUR SERVICE ORGANIZATION REVIEW TEST PROCEDURES SO THAT VOLTAGE REGULATION IS ALWAYS CHECKED AS A STANDARD SERVICING PROCEDURE AND THAT THE HIGH VOLTAGE READING BE RECORDED ON EACH CUSTOMER'S INVOICE.
5. WHEN TROUBLESHOOTING AND MAKING TEST MEASUREMENTS IN A
PRODUCT WITH A PROBLEM OF EXCESSIVE HIGH VOLTAGE AVOID BEING UNNECESSARILY CLOSE TO THE PICTURE TUBE AND THE HIGH VOLTAGE SUPPLY DO NOT OPERATE THE PRODUCT LONGER THAN IT IS NECESSARY TO LOCATE THE CAUSE OF EXCESSIVE VOLTAGE.
6. REFER TO HV. B+ AND SHUTDOWN ADJUSTMENT PROCEDURES
DESCRIBED IN THE APPROPRIATE SCHEMATIC AND DIAGRAMS(WHERE USED).
X-RADIATION. THE ONLY POTENTIAL SOURCE OF
X-RADIATION PROBLEM. EVERY TIME A COLOR
SUBJECT: IMPLOSION
1. ALL DIRECT VIEWED PICTURE TUBES ARE EQUIPPED WITH AN INTEGRAL
IMPLOSION PROTECTION SYSTEM, BUT CARE SHOULD BE TAKEN TO AVOID DAMAGE DURING INSTALLATION, AVOID SCRATCHING THE TUBE. IF SCRATCHED REPLACE IT.
2. USE ONLY RECOMMENDED FACTORY REPLACEMENT TUBES.
SUBJECT: TIPS ON PROPER INSTALLATION
1. NEVER INSTALL ANY PRODUCT IN A CLOSED-IN RECESS. CUBBYHOLE OR
CLOSELY FITTING SHELF SPACE, OVER OR CLOSE TO HEAT DUCT, OR IN THE PATH OF HEATED AIR FLOW.
2. AVOID CONDITIONS OF HIGH HUMIDITY SUCH AS: OUTDOOR PATIO
INSTALLATIONS WHERE DEW IS A FACTOR, NEAR STEAM RADIATORS WHERE STEAM LEAKAGE IS A FACTOR, ETC.
3. AVOID PLACEMENT WHERE DRAPERIES MAY OBSTRUCT REAR VENTING.
THE CUSTOMER SHOULD ALSO AVOID THE USE OF DECORATIVE SCARVES OR OTHER COVERINGS WHICH MIGHT OBSTRUCT VENTILATION.
4. WALL AND SHELF MOUNTED INSTALLATIONS USING A COMMERCIAL
MOUNTING KIT, MUST FOLLOW THE FACTORY APPROVED MOUNTING INSTRUCTIONS. A PRODUCT MOUNTED TO A SHELF OR PLATFORM MUST RETAIN ITS ORIGINAL FEET (OR THE EQUIVALENT THICKNESS IN SPACERS) TO PROVIDE ADEQUATE AIR FLOW ACROSS THE BOTTOM. BOLTS OR SCREWS USED FOR FASTENERS MUST NOT TOUCH ANY PARTS OR WIRING. PERFORM LEAKAGE TEST ON CUSTOMIZED INSTALLATIONS.
5. CAUTION CUSTOMERS AGAINST THE MOUNTING OF A PRODUCT ON
SLOPING SHELF OR A TILTED POSITION, UNLESS THE PRODUCT IS PROPERLY SECURED.
6. A PRODUCT ON A ROLL-ABOUT CART SHOULD BE STABLE ON ITS
MOUNTING TO THE CART CAUTION THE CUSTOMER ON THE HAZARDS OF TRYING TO ROLL A CART WITH SMALL CASTERS ACROSS THRESHOLDS OR DEEP PILE CARPETS.
7. CAUTION CUSTOMERS AGAINST THE USE OF A CART OR STAND WHICH
HAS NOT BEEN LISTED BY UNDERWRITERS LABORATORIES, INC. FOR USE WITH THEIR SPECIFIC MODEL OF TELEVISION RECEIVER OR GENERICALLY APPROVED FOR USE WITH TV'S OF THE SAME OR LARGER SCREEN SIZE.
8. CAUTION CUSTOMERS AGAINST THE USE OF EXTENSION CORDS. EXPLAIN THAT A FOREST OF EXTENSIONS SPROUTING FROM A SINGLE OUTLET CAN LEAD TO DISASTROUS CONSEQUENCES TO HOME AND FAMILY.
2
SERVICING PRECAUTIONS
CAUTION : Before servicing the DVD covered by this service data and its supplements and ADDENDUMS, read and follow the SAFETY PRECAUTIONS NOTE : if unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions in this publications, always follow the safety precautions.
Remember Safety First:
General Servicing Precautions
1. Always unplug the DVD AC power cord from the AC power source before:
(1) Removing or reinstalling any component, circuit board,
module, or any other assembly.
(2) Disconnection or reconnecting any internal electrical
plug or other electrical connection.
(3) Connecting a test substitute in parallel with an
electrolytic capacitor Caution : A wrong part substitution or incorrect
polarity installation of electrolytic capacitors may result in an explosion hazard.
2. Do not spray chemicals on or near this DVD or any of its
assemblies.
3. Unless specified otherwise in this service data, clean
electrical contacts by applying an appropriate contact cleaning solution to the contacts with a pipe cleaner, cotton-tipped swab, or comparable soft applicator.
Unless specified otherwise in this service data, lubrication of contacts is not required.
4. Do not defeat any plug/socket B+ voltage interlocks with
witch instruments covered by this service manual might be equipped.
5. Do not apply AC power to this DVD and/or any of its
electrical assemblies unless all solid-state device heat sinks are correctly installed.
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES 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 ES
devices, place the assembly on a conductive surface such as aluminum toil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a GROUNDED-tip soldering iron to solder or
unsolder ES devices.
4. Use only an anti-static solder removal device. Some
solder removal devices not classified a "anti-static" can generate electrical charges sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can
generate electrical charge sufficient to damage ES devices.
6. Do not remove a replacement ES device from its
protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil, or comparable conductive material.)
6. Always connect test instrument ground lead to the appropriate ground before connection the test instrument positive lead. Always remove the test instrument ground lead last.
Insulation Checking Procedure
Disconnect the attachment plug trom the AC outlet and turn the power on. Connect an insulation resistance meter(500V) to the blades of the attachment plug. The insulation resistance between each blade of the attachment plug and accessible conductive parts (Note 1) should be more than 1M ohm.
Note 1 : Accessible Conductive Parts including Metal panels, input terminals, Earphone jacks, etc.
3
7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed.
Caution : Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged
replacement ES devices. (Normally 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 ES device.)
PREPARATIONS BEFORE OPERATION
FRONT PANEL
STANDBY
R
Digital Karaoke
+
3
4 7 9 10
DVD/VCD PLAYER
DISC
3
PAL/NTSC
5
PLAY PAUSE STOP
1 2
RETURN REPEAT
3
1
POWER
ON/STANDBY
DVD PLAYER DV-4000
1 2 3 4 5 +5
2
1
-
MIC LEVEL
2
ECHOMIC
-
+
20 19 18 17 15 14 13
EXCHANGE
1216
86
DISC SKIP
SEARCH
OPEN/CLOSE
DISC
11
1. POWER
2. NUMBER BUTTONS
3. REMOTE SENSOR
4. DISPLAY
5. PLAY
6. PAUSE
7. STOP
8. DISC EXCHANGE
9. DISC SKIP
10. OPEN/CLOSE
11. SEARCH
12. DISC1, 2, 3
13. REPEAT
14. RETURN
15. PREVIOUS/NEXT
16. DISC TRAY
17. ECHO
18. MIC LEVEL
19. MIC 2
20. MIC 1
4
DISPLAY
VCD and CD
indicator
Pause indicator Title indicator
Play indicator
VCD
DVD indicator
PBC indicator
Remain indicator
TITLE
PBC
Title/chapter/track indicator
Chapter/track indicator
CHP/TRK
REMAIN
Program indicator
Lock indicator
PROGRAM
indicator
Hour
Angel indicator
Minute
indicator
Dolby Digital indicator
DIGITAL
MIN SEC
Second indicator
Repeat play indicator
REPEAT
ONE ALL
A B
1/2 2/3 D1
RESUME
Disc recording format
Resume indicator
Track calender
3
1
2
7
5
6
11
9
10
13
15
14
12 16
Push DIMMER , the brightness of the display is reduced by half, push it once more, the display becomes dark. Push the button again, the display resumes brightness.
REAR PANEL
4 8
10
1 2 3
DIGITALAUDIO OUT
VIDEO OUT
AUDIO OUT
1
2
R L 2
COAXIAL
1
OPTICAL
S-VIDEO
4 5 6 7 8 9
1 AUDIO OUT1 R
2 AUDIO OUT1 L
3 VIDEO OUT1
4 AUDIO OUT2 R
5 AUDIO OUT2 L
6 VIDEO OUT2
7 S-VIDEO
8 OPTICAL
9 COAXIAL
10
POWER SUPPLY CORD
5
NAME AND LAYOUT OF REMOTE CONTROLS
1. OSD
2. DIMMER
3. NUMBER BUTTONS
10
11
12
13
33
4. SEARCH
5. SET UP
6. TITLE
7. DIRECTIONS
2 1
3
4
OSD DIMMER
1 2
4 5
7 8
10/0 +10
FR FF
SETUP TITLE
DISC SKIP
3 PLAY MODE
6 DIGEST
9
TIME SEARCH
REMAIN RESUME
SLOW ZOOM
MENU II/STEP
5 6
7
31 32 30
29
28
27 25
23
26 24
22
8. PLAY(ENTER)
9. PREVIOUS
10. SYSTEM
11. STOP
12. KEY CONTROL
13. VOLUME +/-
14. LANGUAGE
15. MUTE
16. SUBTITLE
17. AUDIO MODE
8 9
SYSTEM
KEY
CONTROL
#
- VOLUME +
RE
MO
TE
C
A-B REPEAT
SUBTITLE
UNIT
TROL
ON
RETURN
AUDIO MODE
21 20
19
17
15
18
16
14
18. A-B REPEAT
19. REPEAT
20. RETURN
21. NEXT
22. MENU
23. PAUSE/STEP
24. SLOW PLAY
25. ZOOM
26. REMAIN
27. RESUME
28. TIME SEARCH
29. DIGEST
30. PLAY MODE
31. ANGLE
32. DISC SKIP
33. REMOTE TRANSMITTER
6
XS109
TO OUTPUT
VGND
12V
GND
SPDIF5VZERO
AGD
CEN
R-S
AGD
AGND
WOOF
AGD
L-S
G/CVBS1
VGND
CVBS2
BLUE/AGND
LUMA
RED/AGND
CHROMA
VIDEO
ENCODER
CS4955/BT865
AGDLAGD
AUDIO DAC
PCM1723/PCM1720
BOARD
R
4M ROM
29F040
VCC F B LD GND A E C MD VR VC NC VR MD GND LD NC GND VCC NC NC D C VC B A RF NC NC T­T+ F­F+
XS100
TO PICK UP
MECHANISM
27MHz
CHASSIS
RF AMP
16M SDRAM* 2
27MHz
HC04
33.868MHz
D1890
AUDIO DATA
EEPROM
24C01
MPEG-2
DECODER
VS2811EVS3811
/UPD3801-2811
ATAP I
INTERFACE
4M DRAM
SERVO &
DVD
PROCESSOR
D1870
CONTROL
BUS
D1850
CPU
TO POWER
SUPPLY BOARD
XS106
3.5V
3.5V 24V GND GND GND
3.6V Vcc 8V 12V 5V POWER 12V
SERVO
& TRAY
DRIVER
BA5954
& BA6208
NC
POWER
12V
VCC
24V
3.5V
3.5V
GND
FCLK
FCS
FDATA
OPEN
GND
LIM
SP+
SP-
SLED-
SLED+
LOAD
UNLOD
GND
CLOSE
GND
RMC
NC
OVERALL BLOCK DIAGRAM
XS103
XS102
TO PICK UP
MECHANISM
CHASSIS
7
XS107
TO KEY BOARD
Electrical Trouble Shooting Guide
Connection of the unit is correct.
Setting of the unit is correct
Is power normal?
Yes
Is fluoresce display correct?
Yes
Is open/close normal?
Yes
Can disc be read?
Yes
Is video normal?
No
No
No
No
No
Refer to power guide.
Refer to display .guide
Refer to open/close .guide
Refer to read disc .guide
Refer to video .guide
Yes
Is audio normal?
Yes
Normal operation.
No
Refer to audio .guide
8
A Power Circuit abnormal
START
Is C328 AC 220V?
Yes
No
F301 is open. XP301 is open. XP302 is open.
Power cord isn't inserted firmly
or power cord is open.
Is C301 DC 310V?
Yes
Are 2,3 pin of N301 resistance
high impedance?
Yes
Are transformer secondary
6V, 15V output?
Yes
Is XP303 normal?
Yes
No
No
No
No
Check commute circuit.
Check L301 and L302.
Replace N301.
Check if transformer is damaged. Check secondary commute circuit. Check secondary feedback circuit.
Check if secondary short.
Check V304.
Check regulated circuit.
Check N302 and peripheral
components.
Normal
9
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