Zenith XBV-613 Service manual
MODEL : XBV613SERVICE MANUAL
SERVICE MANUAL
Product Type: VCR+DVD COMBI
Chassis: D37 + DP-10C
Manual Series: XBV613
Manual Part #: 3829RGN005G
Model Line: D
Product Year: 2006
Model Series:
XBV613
Printed in U.S.A
CONTENTS
SUMMARY
CABINET & MAIN CHASSIS
ELECTRICAL
MECHANISM OF VCR PART
REPLACEMENT PARTS LIST
Huntsville, Alabama 35824-1513
Copyright © 2006 by Zenith Electronics Corporation
................................................
....................
............................................
...................
..................
Published March 2006
by Technical Publications
Zenith Electronics Corporation
201 James Record Road
1
2
3
4
5
CONTENTS
SECTION 1 . . . . SUMMARY
SECTION 2 . . . . CABINET & MAIN CHASSIS
SECTION 3 . . . . ELECTRICAL
SECTION 4 . . . . MECHANISM OF VCR PART
SECTION 5 . . . . REPLACEMENT PARTS LIST
SECTION 1
SUMMARY
CONTENTS
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS ............. 1-3
SERVICING PRECAUTIONS .................................................................................................. 1-4
• General Servicing Precautions
• Insulation Checking Prodedure
• Electrostatically Sensitive Devices
SERVICE INFORMATION FOR EEPROM........................................................................... 1-5
SPECIFICATIONS....................................................................................................................... 1-6
1-3
CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY,
NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFACTURER’S APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOTONLY
VOID THE WARRANTY, BUTMAYLEAD TO YOUR BEING LIABLE FOR ANY
RESULTING PROPERTYDAMAGE 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 THATALL COMPONENTS ARE POSITIONED IN SUCH AWAY
AS TO AVOID POSSIBILITY OF ADJACENT COMPONENT SHORTS.
THIS IS ESPECIALLY IMPORTANT ON THOSE MODULES WHICH 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 ALLLOOSE FOREIGN PARTICLES.
4. CHECK FOR PHYSICAL EVIDENCE OF DAMAGE OR DETERIORATION
TO PARTS AND COMPONENTS. FOR FRAYED LEADS, 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 RECIVING TUBE OR
A RESISTOR RATED AT 1 WATT OR MORE. LEAD TENSION AROUND
PROTRUNING METALSURFACES 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 USE AN A.C. VOLTMETER, HAVING 5000 OHMS PER VOLT OR MORE SENSITIVITY, IN
THE FOLLOWING MANNER; CONNECT A 1500 OHM 10 WATT RESISTOR, PARALLELED BY A .15 MFD. 150.V 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. 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.
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 MAG-
NITUDE TO CONSTITUTE ARISK 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-RADIATION. THE ONLY POTENTIAL SOURCE OF X-RAYS IN CURRENT T.V. RECEIVERS IS THE PICTURE TUBE. HOWEVER, THIS TUBE DOES NOT EMIT X-RAYS 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 X-RAY SHIELD IN
COLOR SETS, ALWAYS RE-INSTALL THEM.
3. IT IS ESSNTIAL THAT SERVICE PERSONNEL HAVE AVAILABLE AN
ACCURATE AND RELIABLE HIGH VOLTAGE METER. THE CALIBRA
TION OF THE METER SHOULD BE CHECKED PERIODICALLY
AGAINST A REFERENCE STANDARD, SUCH AS THE ONE AVAILABLE
ATYOUR DISTRIBUTOR.
4. WHEN THE HIGH VOLTAGE CIRCUITRY IS OPERATING PROPERLY
THERE IS NO POSSIBILITY OF AN X-RADIATION PROBLEM. EVERY
TIME A COLOR 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 RECORDER 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 IS NECESSARY TO LOCATE THE CAUSE OF EXCES
SIVE VOLTAGE.
6. REFER TO HV. B+ AND SHUTDOWN ADJUSTMENT PROCEDURES
DESCRIBED IN THE APPROPRIATE SCHEMATIC AND DIAGRAMS
(WHERE USED).
SUBJECT: IMPLOSION
1. ALL DIRECT VIEWED PICTURE TUBES ARE EQUIPPED WITH AN INTE
GRAL 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 AFACTOR, ETC.
3. AVOID PALCEMENT 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 AGAINSTTHE 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 ROLLA 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 T.V.’S OF
THE SAME OR LARGER SCREEN SIZE.
8. CAUTION CUSTOMERS AGAINST THE USE OF EXTENSION CORDS,
EXPLAIN THATA FOREST OF EXTENSIONS SPROUTING FROM ASINGLE OUTLET CAN LEAD TO DISASTROUS CONSEQUENCES TO
HOME AND FAMILY.
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS
A.C. VOLTMETER
GOOD EARTH GROUND
SUCH AS THE WATER
PIPE. CONDUIT. ETC
PLACE THIS PROBE
ON EACH EXPOSED
METALPART
1-4
SERVICING PRECAUTIONS
CAUTION : Before servicing the VCR+DVD covered by this
service data and its supplements and addends, 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.
Remembers Safety First:
General Servicing Precautions
1. Always unplug the VCR+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 elec-
trolytic 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 VCR+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
whitch instruments covered by this service manual might
be equipped.
5. Do not apply AC power to this VCR+DVD and/or any of its
electrical assemblies unless all solid-state device heat
sinks are cerrectly installed.
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 from 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 1Mohm.
Note 1 : Accessible Conductive Parts including Metal panels, Input terminals, Earphone jacks, etc.
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 foil, to prevent electrostatic charge buildup or
exposure of the assembly.
3. Use only a grouned-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 protec
tive 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).
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.)
1-5
SERVICE INFORMATION FOR EEPROM
POWER ON
DVD LOGO Status (NO Disk status)
Remotecontrol
Pause key-->1-->4-->7-->2 in order.
Press number 0~9, Press charater
A~F (1~6 for a while)
Use arrow key (
F D G E
) to move
to approprite position and make
changes
Press pause key once
Change will be applied when power
OFF-->ON.
* OPTION
• NTSC model doesn’t have VCR option and use DVD option B~F as VCR option. (only DVD exist)
• PAL model has another separate VCR option. (Both VCR and DVD exist)
MODEL XBV613
NAME HEX
OPT 1 55
OPT 2 53
OPT 3 00
OPT 4 45
OPT 5 12
OPT 6 05
OPT 7 E4
OPT 8 00
OPT 9 00
OPT A 00
OPT B C0
OPT C 40
OPT D A0
OPT E 01
OPT F 03
OPT G 3D
DETECT NEW EEPROM
(OPTION EDIT SCREEN)
1-6
SPECIFICATIONS
• GENERAL
Power requirements 120V, 60Hz
Power consumption 16 W
Dimensions (approx.) 430 x 78.5 x 265 mm (W x H x D)
Mass (approx.) 4.2 kg
Operating temperature 5˚C to 40˚C (41˚F to 104˚F)
Operating humidity 5 % to 90 %
Signal system NTSC
• INPUTS
ANTENNA IN 75 ohms (VHF/UHF/CATV)
VHS VIDEO IN(LINE1, 2) 1 V (p-p) 75 ohms, sync negative, RCA jack x 2
VHS AUDIO IN(LINE1, 2) -6.0 dBm more than 47 ohms, RCAjack (L, R) x 2
•OUTPUTS
VIDEO OUT 1 V (p-p) 75 ohms, sync negative
S-VIDEO OUT (Y) 1.0 V (p-p), 75 ohms, negative sync, Mini DIN 4-pin x 1
(C) 0.286 V (p-p) 75 ohms
COMPONENT VIDEO OUT (Y) 1.0 V (p-p), 75 ohms, negative sync, RCA jack x 1
(PROGRESSIVE SCAN) (Pb)/(Pr) 0.7 V (p-p), 75 ohms, RCA jack x 2
Audio output (digital audio) 0.5 V (p-p), 75 ohms, RCA jack x 1
Audio output (analog audio) 2.0 Vrms (1 KHz, 0 dB), 600 ohms, RCA jack (L, R) x 1
RF OUT Channel 3 or 4 (Adjustable)
• VCR SPECIFICATIONS
Head system Four head helical scan azimuth system
Timer 12-hour display type with AM, PM
Tape speed SP: 33.35 mm/sec, LP: 16.67 mm/sec, SLP: 11.12 mm/sec
Tape width 12.7 mm
Maximum recording time SP: 2 HOURS (T-120), SLP: 6 HOURS (T-120)/
8 HOURS (T-160)
Rewind time About 3 minutes (T-120)
Channel coverage VHF: 2-13, UHF: 14-69,
CATV: 1-125 (4A, A-W, W+1 - W+84, A-5 - A-1)
Frequency range 20 Hz to 20 kHz
Signal-to-noise ratio More than 43 dB
Dynamic range More than 88 dB
Channel separation More than 60 dB
• DVD SPECIFICATIONS
Laser system Semiconductor laser, wavelength 650 nm
Frequency response DVD (PCM 96 kHz): 8 Hz to 44 kHz,
DVD (PCM 48 kHz): 8 Hz to 22 kHz
CD: 8 Hz to 20 kHz
Signal-to-noise ratio More than 100 dB (ANALOG OUT jacks only)
Harmonic distortion Less than 0.008%
Dynamic range More than 95 dB (DVD/CD)
*Design and specifications are subject to change without notice.
2-1
SECTION 2
CABINET & MAIN CHASSIS
CONTENTS
EXPLODED VIEWS.....................................................................................................................2-2
1. Cabinet and Main Frame Section...........................................................................................2-2
2. DECK MECHANISM SECTION [ DVD MD (DP-10C) ]............................................................2-3
3. Packing Accessory Section ....................................................................................................2-4
2-2
EXPLODED VIEWS
1. CABINET AND MAIN FRAME SECATION
A
5
4
3
2
1
BCD
463
463
NOTES) THE EXCLAMATION POINT WITHIN AN
EQUILATERAL TRIANGLE IS INTENDED
TO ALERT THE SERVICE PERSONNEL
TO THE PRESENCE OF IMPORTANT
SAFETY INFORMATION IN SERVICE
LITERATURE.
A46
470
457
250
300
463
463
272
273
471
469
A26
A47
271
A00
469
324
288
465
A50
469
322
323
274
CN501
463
330
261
452
261
283
286
285
284
A44
260
261
452
452
280
A43
2-3
2. DECK MECHANISM SECTION [ DVD MD (DP-10C) ]
A26
012
A02
017
013
015
019
439
435
018
015B
015A
014
440
001
A01
002
003
020
016
012A
432
026
A03
012
036
030
024
025
439
010
431
435
012A
021
430
2-4
3. PACKING ACCESSORY SECTION
810
CABLE ASS'Y RF
808
BATTERY
REMOTE CONTROLLER
900
ASSEMBLY
803
PACKING, CASING
806
811
PLUG ASS'Y 1WAY
812
PLUG ASS'Y 2WAY
INSTRUCTION ASSEMBLY
801
PACKING, CASING
803
RF CABLE
BAG
804
802
BOX
3-13-1
SECTION 3
ELECTRICAL
CONTENTS
VCR PART
ELECTRICAL ADJUSTMENT
PROCEDURES
.......................................................3-2
ELECTRICAL
TROUBLESHOOTING GUIDE..........................3-3
1. POWER(SMPS) CIRCUIT..................................3-3
2. SYSTEM/KEY CIRCUIT.....................................3-6
3. SERVO CIRCUIT ...............................................3-7
4. OSD CIRCUIT....................................................3-9
5. Y/C CIRCUIT....................................................3-10
6. HI-FI CIRCUIT..................................................3-14
7. TUNER/IF CIRCUIT .........................................3-17
BLOCK DIAGRAMS..........................................3-19
1. POWER(SMPS) BLOCK DIAGRAM...............3-19
2. TU/IF BLOCK DIAGRAM ................................3-21
3. Y/C BLOCK DIAGRAM ...................................3-23
4. NORMAL AUDIO BLOCK DIAGRAM.............3-25
5. HI-FI BLOCK DIAGRAM .................................3-27
6. SYSTEM BLOCK DIAGRAM...........................3-29
CIRCUIT DIAGRAMS........................................3-31
1. POWER(SMPS) CIRCUIT DIAGRAM .............3-31
2. TU/IF CIRCUIT DIAGRAM...............................3-33
3. A/V CIRCUIT DIAGRAM..................................3-35
4. HI-FI CIRCUIT DIAGRAM................................3-37
5. JACK CIRCUIT DIAGRAM ..............................3-39
6. SYSTEM CIRCUIT DIAGRAM .........................3-41
• WAVEFORMS....................................................3-43
• CIRCUIT VOLTAGE CHART.............................3-45
PRINTED CIRCUIT DIAGRAMS ....................3-49
1. MAIN P.C.BOARD (TOP SIDE) .......................3-49
2. MAIN P.C.BOARD (BOTTOM SIDE) ..............3-51
3. POWER P.C.BOARD ......................................3-53
4. KEY P.C.BOARD .............................................3-55
DVD PART
ELECTRICAL
TROUBLESHOOTING GUIDE
........................3-57
1. POWER CHECK FLOW ..................................3-57
2. SYSTEM OPERATION FLOW.........................3-58
3. TEST & DEBUG FLOW...................................3-59
DETAILS AND WAVEFORMS ON SYSTEM
TEST AND DEBUGGING
.......................................3-65
1. SYSTEM 27MHZ CLOCK, RESET SIGNAL...3-65
2. SDRAM CLOCK ..............................................3-66
3. TRAY OPEN/CLOSE SIGNAL.........................3-66
4. SLED CONTROL RELATED SIGNAL
(NO DISC CONDITION)...................................3-68
5. LENS CONTROL RELATED SIGNAL
(NO DISC CONDITION)...................................3-68
6. LASER POWER CONTROL RELATED
SIGNAL(NO DISC CONDITION) .....................3-69
7. DISC TYPE JUDGEMENT WAVEFORM .........3-69
8. FOCUS ON WAVEFORM ................................3-71
9. SPINDLE CONTROL WAVEFORM
(NO DISC CONDITION)...................................3-72
10. TRACKING CONTROL RELATED
SIGNAL(SYSTEM CHECKING).....................3-73
11. RF WAVEFORM .............................................3-74
12. ZR36882 AUDIO OPTICAL AND COAXIAL
OUTPUT(SPDIF)............................................3-74
13. ZR36882 VIDEO OUTPUT WAVEFORM.......3-75
14. AUDIO OUTPUT FROM AUDIO DAC...........3-76
BLOCK DIAGRAMS...........................................3-78
1. SYSTEM BLOCK DIAGRAM...........................3-78
2. SERVO BLOCK DIAGRAM .............................3-79
3. AUDIO & VIDEO IN/OUT
BLOCK DIAGRAM...........................................3-80
CIRCUIT DIAGRAMS.........................................3-81
1. SYSTEM CIRCUIT DIAGRAM .........................3-81
2. SERVO CIRCUIT DIAGRAM...........................3-83
3. AV/JACK CIRCUIT DIAGRAM ........................3-85
3-2
ELECTRICAL ADJUSTMENT PROCEDURES
1. Servo Adjustment
1) PG Adjustment
• Test Equipment
• Adjustment And Specification
a) OSCILLOSCOPE b) NTSC MODEL: NTSC SP TEST TAPE
MODE
PLAY
• Adjustment Procedure
a) Insert the SP Test Tape and play.
Note - Adjust the distance of X, pressing the Tracking(+) or Tracking(-) when the “ATR” is blink after the
SP Test Tape is inserted.
b) Connect the CH1 of the oscilloscope to the H/SW(TP) and CH2 to the Video Out for the VCR.
c) Trigger the mixed Combo Video Signal of CH2 to the CH1 H/SW(TP) and then check the distance (time
difference), which is from the selected A(B) Head point of the H/SW(TP) signal to the starting point of
the vertical synchronized signal, to 6.5H ± 0.5H (412µs, 1H=63µ s).
• PG Adjustment Method
a-1) Payback the SP standard tape
b-2) Press the “OK(ENTER)” key on the Remote controller and the “REC” key on the Front Panel the same
time, then it goes in to Tracking initial mode.
c-3) Repeat the above step(No.b-2), then PG adjusts automatically.
d-4) Stop the playback, PG adjustment is finished.
• CONNECTION
• WAVEFORM
V.Out
H/SW(TP)
R/C TRK JIG KEY 6.5 ± 0.5H
MEASUREMENT POINT ADJUSTMENT POINT SPECIFICATION
V.Out
H/SW
(TP)
OSCILLOSCOPE
CH1 CH2
V.outH/SW
R/C KEY
(TP)
H/SW
Composite
VIDEO
6.5H(412µs)
VCR PART
3-3
ELECTRICAL TROUBLESHOOTING GUIDE
NO
Check or Replace
D102
Replace D123
Replace D124
Replace D121
YES
YES
Is D121 Normal?
Power Line of Main
PCB is short
1. Power(SMPS) CIRCUIT
No 5.3VA
Replace FR101
(Use the same ICW)
Is the FR101
Normal?
Is R101 Normal?
Is BD101 Normal?
NO
NO
NO
NO
NO
NO
NO
NO
NO
Replace BD101
Replace R101
Is D102 normal?
Replace D125
Replace IC103
YES
YES
YES
YES
YES
YES
YES
Is Vcc (9V - 18V) supplied to IC101 Pin2?
Are D125 normal?
Is there about 2.5V
at IC103 Pin1?
Is D123 normal?
Is D124 Normal?
(1) No 5.3VA
3-4
No 33V
Is the Vcc(33V) supplied to Q161 Emittor?
Check or Replace
D121
Is Q162 Base
‘H’?
Check the PWR CTL
“H” signal from µ-com
Check or Replace
Q161
YES
YES
YES
(5) No 33V
No 5.0V_D
Check or Replace
D125
Is the Vcc(5.3V) supplied to Q165 Emittor?
Check or Replace
Q165
Is the Q162 Base
‘H’?
NO
NO
Check the PWR CTL
“H” signal from µ-com
YES
YES
YES
(2) No 5.0V_D
No 5.0V_T
Check or Replace
D125
Check the PWR CTL
“H” signal from µ-com
Is the Vcc(5.3V) supplied to Q163 Emittor?
Is the Q162 Base
‘H’?
Check or Replace
Q163
NO
NO
YES
YES
YES
(3) No 5.0V_T
No 3.3V
Check or Replace
D123
Is there about 3.8V
at IC131 pin1?
Is there about 3.3V~5V
at IC131 pin4?
NO NO
Check the PWR CTL
“H” signal from µ-com
NO NO
YES
YES
Check IC131
and Replace
YES
(4) No 3.3V
3-5
No Motor_Vcc
Check or Replace
D124
Is the Vcc(14V)
supplied to C134?
Check or Replace
the Cap / Drum
NO
YES
YES
(6) No Motor_Vcc (To Cap, Drum Motor )
No REG 12V
Is the Vcc(14V) supplied
to Q165 Collector?
YES
Is the Vcc(14V) supplied to Q165 Base?
Check or Replace
Q165
YES
YES
(7) No REG 12V
Check or Replace
D124
NO
NO
Check the PWR CTL
“H” signal from µ-com
No REG 9V
Is the Vcc(12V) supplied
to Q164 Collector?
Check or Replace
D124
Is the Vcc(10V) supplied to Q164 Base?
Check or Replace
ZD152
Check or Replace
Q164
YES
YES
YES
(9) No REG 9V
No 9V
Check or Replace
D126
Is there about 3.8V
at IC141 pin1?
Is there about 3.3V~
5V at IC131 pin4?
NO NO
Check the PWR CTL
“H” signal from µ-com
NO NO
YES
YES
Check or Replace
IC141
YES
(8) No 9V
3-6
2. SYSTEM/KEY CIRCUIT
(1) AUTO STOP
(2) The unstable loading of a Cassette tape
Auto Stop
Does the SW30 waveform
appear at IC501 Pin18?
Do the T-UP Reel Pulses
appear at IC501 Pin80?
Is 12V applied to PMC01
Pin1?
Check the Drum Motor
signal.
Does 5V appear at RS501?
Check the Q165 Power
Circuit.
Refer to “SMPS MOTOR_Vcc
12 Volt Trouble Shooting”.
Is 5V applied to R531 ?
Refer to SMPS 5.3VA
troubleshooting.
Check IC501 Pins22, 23,
24, 25.
Do T/UP Reel Pulses
appear at the point
between R556 and R536?
Replace the T/UP Reel
Sensor (RS501).
Check the CST SW and
the peripheral circuitry.
Replace IC501.
The unstable loading of a
Cassette tape
Does the “H” signal appear
at IC501 Pin60 during
inserting of the CST ?
Does the “L” signal appear
at IC501 Pin19 during
inserting of the CST?
Check the Deck
Mechanism.
Caution :
Auto stop can occur because Grease or Oil is dried up
YES
YES
YES
NO
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO NO
YES
YES YES
3-7
3. SERVO CIRCUIT
(1) Unstable Video in PB MODE
Unstable Video in
PB Mode.
Does the Noise level of the
screen change
periodically?
Do the CTL pulses appear
at IC501 Pin97?
Is adjusting the height of
the CTL Head accurate?
Readjust the height of the
CTL Head.
Replace IC501.
Refer to “When the Y signal
doesn’t appear on the
screen in PB Mode”.
Does the CFG waveform
appear at IC501 Pin87?
On tracking do the CTL
pulses move?
Does the Video Envelope
waveform appear at IC501
Pin9?
Replace IC501.
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
(2) When the Drum Motor
(2) doesn’t run.
Do the DFG Pulses appear
at PMC01 Pin11?
Replace the DRUM-M or
CAP-M.
Are the foil patterns and
the Components between
IC501 Pin 90 and PMC01
Pin11 shorted?
Replace IC501.
Refer to “(2)
No 12VA of Power section”
Do the Drum PWM Pulses
appear at the IC501
Pin76?
Are the foil patterns and
the Components between
IC501 Pin76 and PMC01
Pin12 shorted?
Do the DFG Pulses appear
at IC501 Pin90?
Do the Drum PWM Pulses
appear at IC501 Pin76?
Are the connecting patterns and the Components
between IC501 Pin76 and PMC01 Pin12 shorted?
When the Drum Motor
doesn’t run,
Does 12V appear at
PMC01 Pin8?
Does 2.8V appear at
PMC01 Pin12?
Check the connector
(PMC01) and the Drum
Motor Ass’y.
NO
YES
YES
YES
NO
NO
NO
NO
NO
YES
YES
YES
3-8
Does the CFG signal appear at
PMC01 Pin1?
Does the PWM signal appear at IC501
Pin77?
Does 2.8V appear at PMC01 Pin 9?
Check the PMC01 and the Capstan
Motor Ass’y.
Does the Capstan PWM signal appear at
IC501 Pin77?
Are the foil patterns and Components
between IC501 Pin77 and PMC01 Pin9
shorted?
Does the CFG signal come into IC501
Pin87?
Are the foil patterns and Components
between IC501 Pin77 and PMC01 Pin9
shorted?
2. SERVO CIRCUIT
(3) When the Capstan Motor doesn’t run,
NO
NO
NO
YES
YES
YES
When the Capstan Motor doesn’t run,
Does 12VA appear at PMC01?
YES
Replace IC501.
YES
NO
NO
YES
Refer to “SMPS(CAPSTAN/12Volt)
Trouble Shooting”.
Are the foil patterns and component
between IC501 Pin87 and PMC01 Pin1
shorted?
Check the Capstan Motor Ass’y.
NO
3-9
KEY doesn’t working.
Is 5V applied to IC501
Pin99?
Does LED or FLD change
when a function button is
pressed?
Refer to “SMPS 5.3VA
Trouble Shooting”.
Replace the defective
switches.
YES
NO
NO
2. SERVO CIRCUIT
(4) KEY doesn’t working
4. OSD CIRCUIT
(1) No OSD display.
(2) I
2
C BUS CHECK
No OSD or F.OSD display.
Is 5.3V applied to
IC501 Pin53?
Does oscillation occur at
IC501 Pins44, 45?
Replace IC501.
The I2C waves don’t
come out.
Does Power appear at the
Pull up impedence
(R569, R507)?
Replace IC501.
Refer to “SMPS 5.3VA
Trouble Shooting”.
Check or Replace the pheripheral Circurity.(L511,
R518, C596, C595)
Refer to “SMPS 5.3VA
Trouble Shooting”.
YES
YES
YES
NO
NO
NO
3-10
5. Y/C CIRCUIT
(1) No Video in EE Mode,
No Video in EE Mode
Does the Video signal
appear at IC302 Pins1,
3?
Is there SW5V at
IC302 Pin6?
Replace IC302.
Does the Video signal
appear at IC301 Pins28,
30, 32?
Is REG 5.0V applied to
IC301Pins23, 44, 45, 52,
68, 77?
Does the Video signal
appear at IC301 Pin26?
Does the Video signal
appear at IC501 Pin52?
Does the Video signal
appear at the Q924
Emitter?
Check the SW 5V Line.
(Power Circuit)
Is I2C BUS signal applied to
IC301 Pins53, 54, 55?
Replace IC301.
Check the path of the signal between the IC301 Pin
26 and IC501 Pins50, 52.
Is there 12V on the
terminal of R905?
Check the SW 12V Line.
(Power Circuit)
Replace Q924.
Check the System Circuit.
(Refer to ‘SYSTEM I2C BUS
CHECK Trouble Shooting’)
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
YES
YES
Check DVD Video Input
(IC601, Pin150), Tuner
Video Input (TU701 Pin16),
Line Video Input (JK901),
respectively.
NO
3-11
3. Y/C CIRCUIT
(2) When the Y(Luminance) signal doesn’t appear on the screen in PB Mode,
Is 5V applied to IC301
Pins23, 44, 45, 52, 68, 77?
Is the Y/C Bus siganl
applied to IC301 Pins53,
54, 55?
Does the normal RF signal
appear at IC301 Pin14?
Check the line of the SW
5V Line.
Check the System Circuit.
(IC501 Pin18)
Check the V.H.S/W level.
Refer to ‘SYSTEM Y/C
BUS CHECK Trouble
Shooting’.
Is the V.H.S/W signal
applied to IC301 Pin57?
Does the Rectangular
waveform(5V) appear at
IC301 Pin57(V.H.S/W)
Clean the Drum.
Check C324.
Check R328, C322, C323.
Does the Y(Luminance)
signal appear at IC301
Pin20?
Is the Y(Luminance) Video
waveform shown at IC301
Pin22?
Replace IC301.
NO
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
3-12
3. Y/C CIRCUIT
(3) When the C(Color) signal doesn’t appear on the screen in PB Mode,
Is SW 5V applied to IC301
Pins23, 44, 45, 52, 68, 77?
Does the Color signal
appear at IC301 Pins41,
50?
Check the line of the REG
5V Line. (Power Circuit)
Replace X301.
Check C342, C341, R333.
Is the oscillation frequency
of X301 (3.58MHZ) normal?
Replace IC301.
Does the Color signal
appear at IC301 Pin48?
Replace IC301.
NO
YES
YES
YES
NO
NO
NO
3-13
3. Y/C CIRCUIT
(4) When the Video signal doesn’t appear on the screen in REC Mode,
YES
YES
YES
YES
YES
YES
NO
NO
YES
YES
YES
YES
YES
Check system part
(V.H/SW)
Replace IC301.
Check the drum
*OPTION
Pins72, 73, 74(SP)
Pins65, 66, 67(EP)
REC mode
Check the EE mode
NO
Is EE mode normal?
Is color
normal?
A
A
YES YES
Is brightness normal?
Does signal appear at
IC301 Pins41, 50?
NO
Check X301 oscillation
frequency.
YES
Is the brightness signal supplied to IC301 Pins18?
Is SW 5V supplied to IC301
Pins23, 44, 45, 68, 77?
Check the power of Pins23,
44, 45, 52, 68, 77.
Check the SW 5V power.
NO
NO
NO
NO
NO
Is Y/C Bus applied to
IC301 Pins53, 54, 55?
Check the SW 5V power Check system part
Do X301 and X-TAL
oscillate?
Check X301.
Is V.H SW supplied to
IC301 Pin57?
Does the FM signal appear
at IC301 Pins73(SP)/
66(EP)?
3-14
6. Hi-Fi CIRCUIT
(1) No Sound(EE Mode)
YES
No Sound.
Check the SIF.IN of IC801 Pins57.
Check the DVD Audio of IC801
Pins12, 74.
Check the LINE1 Audio of IC801
Pins11, 73.
Check the LINE2 Audio of IC801
Pins9, 71.
Check the Vcc of IC801 Pins3, 5, 15,
32, 36, 46, 54.
YES
Check the IIC Clock and DATA at
IC801 Pins37, 38.
YES
Check the Audio of IC801 Pins78, 80.
YES
Check the Audio of C804, C854.
YES
Check JK901.
Check the TU701 SIF Pin13.
NO
Check the DVD MODULE.
(PMD02 Pins13, 15).
NO
Check the Rear Jack.
(JK901 Audio in).
NO
Check the front Jack.
Timer
NO
Check the Power 5V, 5.3VA, REG 9V.
CN701 2,3,11,12
YES
NO
Check IC501 Pins71, 72.
NO
Replace IC801.
Replace C804, C854.
NO
NO
3-15
3. Y/C CIRCUIT
(2) Hi-Fi Playback
YES
YES
YES
YES
PB mode
No Sound.
Check the Vcc of IC801
(Pins3, 5, 15, 32, 36, 46, 54).
Check the Hi-Fi Selection switch.
(IC801 Pin39) and the Tape quality.
Is the RF Envelope at
IC801 Pin23 over 3Vp-p?
YES
Check IC801 Pin37(Data),
Pin38(Clock)
YES
Do Audio Signals appear at
IC801 Pin80(L-CH), 78(R-CH)?
YES
Do Audio Signals appear at
JK901?
Check Power.
NO
Check IC501 Pin19
(A.H/SW)
NO
NO
Check the parts of µ-COM
(IC501 Pins71, 72)
NO
Check the Connection at
P3D01 Pins7, 9.
NO
Check the Jack(JK901)
NO
Check C801, C851, R801,
R851.
YES
3-16
(3) Hi-Fi REC
Hi-Fi REC.
It is impossible to record Hi-Fi Audio
signal.
Check Vcc of IC801.
(Pins3, 5, 15, 32, 36, 46, 54)
YES
YES
Check IC801 Pin37(Data), Pin38(CLOCK).
YES
Do Audio signals appear at IC801 Pin6?
YES
Do Audio signals appear at IC301
Pin76(Normal Audio)?
YES
Do OSC signals appear at P3D02 pin5
(50Vp-p)
YES
YES
Check Power.
NO
Check ports of µ-CPM.
(IC501 Pins71, 72)
Check Audio input signal of IC801
Pin57(TU.A.), 7, 69(DVD.A.),
11, 73(LINE1.A.), 9, 71(LINE2.A.)
NO
Check C825, R337, R338, C371, C3A1
Check REC OSC BLOCK
(Q301, Q302, Q304~Q307)
Is “High” IC501 Pin74 in REC mode.
NO
NO
NO
3-17
7. Tuner/IF CIRCUIT
(1) No Picture on the TV screen
No picture on the TV
screen
Does the Video signal at
the TU701 Pin16.
YES
YES
YES
Is +33V applied to TU701
Pin14?
YES
Is +5V applied to TU701
Pin3?
NO
Does the Video signal
appear at IC501 Pin 52.
NO
Does the Video signal
appear at JK901
YES
NO
Check the signal flow from IC501
Pin52 to JK901 Pin Video out.
YES
Check 33V line.
NO
Check 5V line.
NO
YES
Does the Clock signal
appear at TU701 Pin9?
Check the lIC Clock Signal
of µ-COM Pin71.
NO
YES
Does the data signal
appear at TU701 Pin10?
Replace Tuner.
Check the signal from IC301
Pin29 to IC501 Pin50.
Check the signal from IC501
Pin52 to Q924
Check the lIC Data Signal
of µ-COM Pin72.
NO
3-18
(2) No Sound
No Sound.
Check the Vcc of TU701 Pins3, 14.
YES
Check 5V, 33V Line.
NO
Check the Tuner SiF signal at IC801
Pin57.
YES
Check the Audio of IC801 Pins78, 80.
YES
Check the Signal flow from IC801 Pins78,
80 to JK901 Audio out(L), (R)
YES
Check the Tuner SIF of TU701 Pin13.
NO
1. Check the Vcc(5.3VA, 9V) of IC801
Pins3, 5, 36, 54.
2. Check the IIC Clock and Data at IC801
Pins37, 38.
NO
3-19 3-20
BLOCK DIAGRAMS
1. POWER(SMPS) BLOCK DIAGRAM
BD101
T101
!
TRANS
NOISE FILTER
BLOCK
(C101,L102,
C102)
!
FUSE
RESISTOR
(FR101)
BR BL
(BK)(WH)
!
Y-CAP
C110
C103
Y-CAP
+
!
C111
SNUBBER
BLOCK
(D101,C105
C106,R104)
657 8
DRIVE & S/W BLOCK
(IC101, D102, R105,
C104, C108 , C109,
C107,ZD102)
31
2
PHOTO COUPLER
(IC102)
!
ERROR
(IC103)
RECTIFIER &
SMOOTING BLOCK
(D124,C124,C134,
R133,L124,C126)
RECTIFIER &
SMOOTING BLOCK
(D123,C127,C137,
L127)
RECTIFIER &
SMOOTING BLOCK
(D121,C126,R136)
RECTIFIER &
SMOOTING BLOCK
(D122,D125,C128,
L128,C138)
FEED-BACK
(R141,R142,
C143,R143.
R144.R145
AMP
BLOCK
R146)
12V REG BLOCK
(Q166,ZD151,C160,
R166,C159)
9V REG BLOCK
(Q164,ZD152,C161,
R168,C166)
8V REG BLOCK
(D126,IC141,R167,
C165)
3.8V REG BLOCK
(IC131,C158,R165)
33V S/W BLOCK
(Q161,R154,R155
Q173,R174,R177)
5V S/W BLOCK
(Q165,C164,R172,
R174)
5VT S/W BLOCK
(Q163,C162,D127,
R156,R157)
PWR CTL BLOCK
(Q162,C161,R164,
R163)
MOTOR VCC
14VA
REG12V
REG9V
8V
3.8V
33V
5.3VA
5.0V
M5V/5VT
PWR CTL'H'
Loading...