Zenith DVR-313 Service manual
SERVICE MANUAL
Product Type: DVD RECORDER
Manual Series: DVR313
Manual Part #: 3829RHN003P
Model Line: F
Product Year: 2003
Summary 1
Cabinet & Main Chassis 2
Electrical 3
Parts List 4
Published May 2003
by Technical Publications
Zenith Electronics Corporation
201 James Record Road
Huntsville, Alabama 35824-1513
Copyright © 2003 by Zenith Electronics Corporation
Model Series:
CONTENTS
DVR313
....................................................
.............................
....................................................
....................................................
CONTENTS
SECTION 1 . . . .SUMMARY
SECTION 2 . . . .CABINET & MAIN CHASSIS
SECTION 3 . . . .ELECTRICAL
SECTION 4 . . . .REPLACEMENT PARTS LIST
1-1
SECTION 1
SUMMARY
CONTENTS
NEW FUNCTIONS OF DVD-RECORDER ........................................................................... 1-2
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS.............. 1-3
SERVICING PRECAUTIONS .................................................................................................. 1-4
• General Servicing Precautions
• Insulation Checking Prodedure
• Electrostatically Sensitive Devices
SPECIFICATIONS ...................................................................................................................... 1-5
1-2
NEW FUNCTIONS OF DVD-RECORDER
• SUMMARY OF PRODUCT
- RECORDING FUNCTION OF DVD-RW AND DVD-R SPECIFICATIONS
• DVD-RW: VIDEO MODE AND VR MODE RECORD AVAILABLE
• DVD-R :VIDEO MODE RECORD AVAILABLE
- DIGITAL DUBBING FUNCTION OF DV CAMCORDER BY USING DV TERMINAL (IEEE1394)
• RECORD, PLAY, FF/REW FUNCTION BY REMOTE CONTROL OF DV CAMCORDER
- DVD PROGRESSIVE PLAY RESPONSE
- VARIOUS FUNCTION RESPONSE OF DVD RECORDING (DISC NAVIGATION AND CONVENIENT PLAY,
EDIT FUNCTION)
- OUTSIDE INPUT AND TV RECORDING AVAILABLE
• RECORDING SCREEN QUALITY :VR(HQ, SQ, LQ), VIDEO(HQ, SQ)
- TV RESERVE RECORDING FUNCTION (AUTO MODE SETTING AVAILABLE FOR RECORDING IN
ACCORDANCE WITH THE REMAINING DISC SPACE IN RESERVATION)
SUMMARIZED EXPLANATION OF MAIN FUNCTION
• DVD RECORDING FUNCTION(VR MODE RECORD / VIDEO MODE RECORD)
1) VR MODE RECORD : MANUAL MODE RECORDING IN ACCORDANCE WITH VARIOUS EDITING FUNC-
TION, REMAINING DISC SPACE AND PROGRAM TIME DVD-RW DISC RECORDED IN THE VR MODE
CAN BE PLAYED WITH A DVD PLAYER CORRESPONDING TO THE DVD-RW THERE IS ALSO A PLAYER TO BE PLAYED THROUGH FINALIZING. FOR THE DVD-RW, RECORDING AND EDITING IS AVAILABLE AT THE SAME DEVICE EVEN AFTER FINALIZING.
2) VIDEO MODE RECORDING : THERE IS NO EDITING FUNCTION SUCH AS VR MODE RECORDING
BUT VIDEO MODE RECORDING IS PLAYED IN A GAME DEVICE (FOR EXAMPLE, “PLAY STATION 2”)
WITH PC, DVD PLAY FUNCTION CORRESPONDING TO DVD PLAYER, CAR DVD, DVD-ROM. TO PLAY
IN ANOTHER DEVICE, FINALIZING IS REQUIRED. RECORDING, EDITING AND EDITING IS NOT POSSIBLE AFTER FINALIZING. HOWEVER, RECORDING IS ALLOWED AT THE DVD-RW DISC IF ERASING
THE TITLE FINALLY RECORDED AFTER FINALIZING.
3) RECORDING MODE INITIALIZATION (A KIND OF FORMATTING): BEGINS INITIALIZATION AFTER
SELECTING RECORDING MODE AS VR OR VIDEO MODE BY USING INITIALIZATION FUNCTION OF
THE DISC SETTING MENU. INITIALIZES DEFAULT AS VR MODE FOR DVD-RW. RECORDS IT AS
VIDEO MODE WITHOUT INITIALIZATION FOR VIDEO MODE.
4) FINALIZE: BEGINS FINALIZE AT THE DISC SETTING MENU DURING STOP.
1-3
IMPORTANT SAFETY NOTICE
This manual was prepared for use only by properly trained audio-video service
technicians.
When servicing this product, under no circumstances should the original
design be modified or altered without permission from Zenith Electronics
Corporation. All components should be replaced only with types identical to
those in the original circuit and their physical location, wiring and lead dress
must conform to original layout upon completion of repairs.
Special components are also used to prevent x-radiation, shock and fire hazard. These components are indicated by the letter “x” included in their component designators and are required to maintain safe performance. No deviations
are allowed without prior approval by Zenith Electronics Corporation.
Circuit diagrams may occasionally differ from the actual circuit used. This way,
implementation of the latest safety and performance improvement changes
into the set is not delayed until the new service literature is printed.
CAUTION: Do not attempt to modify this product in any way. Never perform
customized installations without manufacturer’s approval. Unauthorized modifications will not only void the warranty, but may lead to property damage or
user injury.
Service work should be performed only after you are thoroughly familiar with
these safety checks and servicing guidelines.
GRAPHIC SYMBOLS
The exclamation point within an equilateral triangle is intended to
alert the service personnel to important safety information in the
service literature.
The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the service personnel to the presence of
noninsulated “dangerous voltage” that may be of sufficient magnitude to constitute a risk of electric shock.
The pictorial representation of a fuse and its rating within an equilateral triangle is intended to convey to the service personnel the
following fuse replacement caution notice:
CAUTION: FOR CONTINUED PROTECTION AGAINST RISK
OF FIRE, REPLACE ALL FUSES WITH THE SAME TYPE AND
RATING AS MARKED NEAR EACH FUSE.
SERVICE INFORMATION
While servicing, use an isolation transformer for protection from AC line shock.
After the original service problem has been corrected, make a check of the following:
FIRE AND SHOCK HAZARD
1. Be sure that all components are positioned to avoid a possibility of adjacent
component shorts. This is especially important on items trans-ported to and
from the repair shop.
2. Verify that all protective devices such as insulators, barriers, covers, shields,
strain reliefs, power supply cords, and other hardware have been reinstalled
per the 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 of damage or deterioration to parts and compo-
nents, for frayed leads or damaged insulation (including the AC cord), and
replace if necessary.
5. No lead or component should touch a high current device or a resistor rated
at 1 watt or more. Lead tension around protruding metal surfaces must be
avoided.
6. After reassembly of the set, always perform an AC leakage test on all
exposed metallic parts of the cabinet (the channel selector knobs, antenna
terminals, handle and screws) to be sure that set is safe to operate without
danger of electrical shock. DO NOT USE A LINE ISOLATION TRANSFORMER DURING THIS TEST. Use an AC 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 150V AC type capacitor between a
known good earth ground water pipe, conduit, etc.) and the exposed metallic parts, one at a time. Measure the AC voltage across the combination of
1500 ohm resistor and .15 mfd capacitor. Reverse the AC plug by using a
non-polarized adaptor and repeat AC voltage measurements for each
exposed metallic part. Voltage measured must not exceed 0.75 volts RMS.
This corresponds to 0.5 milliamp AC. Any value exceeding this limit constitutes a potential shock hazard and must be corrected immediately.
TIPS ON PROPER INSTALLATION
1. Never install any receiver in a closed-in recess, cubbyhole, or closely fitting
shelf space over, or close to, a 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 venting. The customer
should also avoid the use of decorative scarves or other coverings that
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 tests
on customized installations.
5. Caution customers against mounting a product on a sloping shelf or in a tilted position, unless the receiver is properly secured.
6. A product on a roll-about cart should be stable in 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 using extension cords. Explain that a forest of
extensions, sprouting from a single 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.
0.15uF
1500 OHM
10 WATT
Place this probe
on each exposed
metal part.
1-4
SERVICING PRECAUTIONS
CAUTION : Before servicing the DVD Recorder 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 DVD Recorder 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 DVD Recorder 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 DVD Recorder 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
SPECIFICATIONS
• GENERAL
Power requirements AC 120V, 60 Hz
Power consumption 44W
Dimensions (approx.) 430 X 92 X 382.5 mm (16.9 x 3.6 x 15 inches) (w x h x d)
Mass (approx.) 6.4 kg (14.1 lbs)
Operating temperature 5°C to 35°C (41°F to 95°F)
Operating humidity 5 % to 90 %
Signal system NTSC
• RECORDING
Recording format DVD VideoRecording, DVD-VIDEO
Recordable discs DVD-R, DVD-RW
Recordable time Approx. 1 hour (HQ mode), 2 hours (SQ mode), 4 hours (LQ mode)
Video recording format
Sampling frequency 27MHz
Compression format MPEG 2
Audio recording format
Sampling frequency 48kHz
Compression format Dolby Digital
• DVD SPECIFICATIONS
Laser system Semiconductor laser, wavelength 650 nm
Frequency response DVD (PCM 48 kHz): 8 Hz to 22 kHz, CD: 8 Hz to 20 kHz
Signal-to-noise ratio > 100 dB
Harmonic distortion < 0.008%
Dynamic range > 95 dB
• INPUTS
VIDEO OUT 1 Vp-p 75 Ω, sync negative, RCA jack x 1
S-VIDEO OUT (Y) 1.0 V (p-p), 75 Ω, negative sync, Mini DIN 4-pin x 1
(C) 0.286 V (p-p) 75 Ω
COMPONENT VIDEO OUT (Y) 1.0 V (p-p), 75 Ω, negative sync, RCA jack x 1
(Pb)/(Pr) 0.7 V (p-p), 75 Ω, RCA jack x 2
Audio output (digital audio) 0.5 V (p-p), 75 Ω, RCA jack x 1
Audio output (optical audio) 5 V (p-p), 75 Ω, Optical connector x 1
Audio output (analog audio) 2.0 Vrms (1 KHz, 0 dB), 600 Ω, RCA jack (L, R) x 1
• ACCESSORY:
Video cable (1) Audio cable (1)
RF 75-ohm Coaxial Cable (1) Blank DVD-RW disc (1)
Remote control (1) Batteries (2)
DVR313
2-1
SECTION 2
CABINET & MAIN CHASSIS
CONTENTS
1. EXPLODED VIEWS ................................................................................................................2-2
1. Cabinet and Main Frame Section ...........................................................................................2-2
3. Packing Accessory Section....................................................................................................2-4
2-2
EXPLODED VIEWS
1. Cabinet and Main Frame Section
A43
A44
A46
A00
A42
A49
A47
A45
A48
452
286
452
280
286
300
269
320
250
463
463
463
463
463
463
467
261
260
262
467
261
262
467
268
267
268
467
463
463
467
265
467
465
463
401
401
004
002
003
001
264
263
266
A
5
4
3
2
1
BCD
2-3
• Cabinet and Main Frame Section• Cabinet and Main Frame Section Part List
S AL LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS
ASSEMBLY PARTS SECTION
A42 6874R-6683B O HAND INS PWB(PCB) ASSEMBLY VDR ALL KEY PT
A43 3501R-2011B O BOARD ASSEMBLY DVD DR2011N AA1CLL
A44 3141R-D005B O CHASSIS ASSEMBLY DR2011N LGECI ZENITH NSP
A45 6874R-6684B O HAND INS PWB(PCB) ASSEMBLY DR200 ALL JACK
A46 6885R-1009N O SUB PWB(PCB) ASSEMBLY DR2011N AA1UZZ
A47 6871R-4025B O PWB(PCB) ASSEMBLY,TOTAL VDR UL SMPS
A48 6871R-6781B O PWB(PCB) ASSEMBLY,TOTAL DR2011N ALL I/O
A49 6874R-6682B O HAND INS PWB(PCB) ASSEMBLY VDR ALL FRONT PT
PARTS SECTION
250 3110R-P010B O CASE DR2000 PRESS TOP
261 4930R-0184A O HOLDER BOTTOM
262 5040H-1016J O RUBBER VCR FH-48C FOOT (D23*D10 3T:PO
263 5900R-D004A O FAN,DC NFD1260153B-1N YSTECH 60X60X15
265 4930R-0348A O HOLDER POWER CORD (DV6000)
266 5040R-0085A O RUBBER FAN(DH2010)
267 322-009AAAA O SUPPORTER PU WIRE GUIDE
268 3300R-D003A O PLATE DH2010 PRESS SPRING_TOP
269 4986R-0001M O GASKET EMI SHIELD(STB W6XH0.5XL46 )
275 4930R-0331A O HOLDER DVD - FAN (HDR)
280 3721R-F322C O PANEL ASSEMBLY,FRONT DVD DR2011N AA1CLL
286 3300R-0211A O PLATE TIMER GND(DVD-2200'S)
300 6410RAHS02E O POWER CORD AP-10W,SPT-2/18AWG SANGNONG UL
320 3720R-D055B O PANEL,VIDEO DVD DR2011N PRESS LGECI ZENITH
SCREW
452 353-051A O SCREW SPECIAL
463 353-051G O SCREW,DRAWING + 2 D3.0 L8.0 MSWR3/FN TB ROUN
465 353-046K O SCREW SPECIAL (3X10 B.K)
467 353-046N O SCREW,DRAWING SPECIAL(3X8 BK.)
• Deck Mechanism Section Part List
S AL LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS
ASSEMBLY PARTS SECTION
A00 3551R-6906B O COVER ASSEMBLY DVD DR2011N R5 NSP
PARTS SECTION
001 3550R-0486A O COVER ROM DR2000
002 3580R-T074A O DOOR,CASE TRAY (DR2000)
003 4405R-S004A O MECHANISM ASSEMBLY DVR-105RZ R5 PIONEER DVD RECOR
004 4850R-0058A O CUSHION DVD DR200 JERSEY 10*10*8T
SCREW
401 353-022M O SCREW,DRAWING TAPTITE 3X6 FZMY PAN S-TYPE
2-4
808 Battery
Connection Wire
Image Terminal
Audio Terminal
Vinyl Packing
Bumper (right)
Remote Control
User’s Manual
Bumper (left)
Product Box
806
804
803
811
812
801
900
802
803
2. Packing Accessory Section
• Packing Accessory Section Part List
S AL LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS
801 3835RS0059A O INSTRUCTION ASSEMBLY DVD DR2011N AA1CLL
802 3890R-C049X O BOX,MASTER DR2011N AA1UZZ C049X 1
803 3920R-E074A O PACKING,CASING DR2000 0.02 100 EPS 4 523 1055
804 3858R-S001B O SHEET (MECH) LDPE 600M 780MM 0.5 DVD_5 NSP
806 861-012H O CABLE,COAXIAL 150M/M NTSC DOUBLE SHIELD NO D
808 534-008C O BATTERY,MANGANESE AAAM(R03) SEOTONG 1-5 V - 1PA
811 6611R1D003A O PLUG ASSEMBLY 1WAY RC1-18RRBS1-0 FREE OF CD
812 6611R2D003A O PLUG ASSEMBLY 2WAY RC2-18RRBS1-0 FREE OF CD_
900 6711R1N133B O REMOTE CONTROLLER ASSEMBLY H2 DR2011N AA1UZZ ZENITH
3-1
SECTION 3
ELECTRICAL
CONTENTS
ELECTRICAL TROUBLESHOOTING GUIDE......................................................................3-2
1. System Part .............................................................................................................................3-2
2. Disc recognition unavailable .................................................................................................3-2
3. No Audio Output in DISC Play ...............................................................................................3-3
4. No Optical / Digital Audio Output ..........................................................................................3-3
5. No Tuner Sound ......................................................................................................................3-4
6. No Outside Input 1 Audio ......................................................................................................3-5
7. No Outside Input 2 Audio ......................................................................................................3-6
8. No Signal of Component Screen in DISC Play ....................................................................3-7
9. No Signal of COMPOSIT / S-VIDEO Screen in Disc Play ....................................................3-8
10. No Signal of TV, outside input screen ................................................................................3-9
11. No Signal of DV(IEEE 1394) input (screen/audio) ...........................................................3-10
BLOCK DIAGRAMS ..................................................................................................................3-11
1. THE WHOLE OF H/W BLOCK DIAGRAM .............................................................................3-11
2. POWER (MAIN) BLOCK DIAGRAM ......................................................................................3-13
3. AUDIO IN/OUT BLOCK DIAGRAM........................................................................................3-15
4. FLD/MICOM/TUNER BLOCK DIAGRAM ...............................................................................3-17
5. MICOM BLOCK DIAGRAM ....................................................................................................3-19
6. VIDEO IN/OUT BLOCK DIAGRAM ........................................................................................3-21
CIRCUIT DIAGRAMS................................................................................................................3-23
1. POWER CIRCUIT DIAGRAM .................................................................................................3-23
2. FRONT CIRCUIT DIAGRAM...................................................................................................3-25
3. E5 BGA, POWER, UART2 CIRCUIT DIAGRAM....................................................................3-27
4. DDR SDRAM, FLASH CIRCUIT DIAGRAM...........................................................................3-29
5. RST, CONTROL/STATUS REG, ATAPI, HOST CPLD, LATCH CIRCUIT DIAGRAM ..........3-31
6. 1394, ETHERNET CONNECTOR CIRCUIT DIAGRAM .........................................................3-33
7. VIDEO IN/OUT CIRCUIT DIAGRAM ......................................................................................3-35
8. AUDIO IN/OUT NON-STD VIDEO CIRCUIT DIAGRAM ........................................................3-37
9. A/V, 1394 IN JACK CIRCUIT DIAGRAM................................................................................3-39
10. AUDIO IN/OUT CIRCUIT DIAGRAM ....................................................................................3-41
11. I/O MICOM CIRCUIT DIAGRAM...........................................................................................3-43
12. TUNER/VIDEO IN/OUT CIRCUIT DIAGRAM .......................................................................3-45
• WAVEFORMS ...........................................................................................................................3-47
• CIRCUIT VOLTAGE CHART ...................................................................................................3-49
PRINTED CIRCUIT DIAGRAMS ............................................................................................3-53
1. MAIN P.C.BOARD(TOP SIDE)................................................................................................3-53
2. MAIN P.C.BOARD(BOTTOM SIDE)........................................................................................3-55
3. I/O P.C.BOARD .......................................................................................................................3-57
4. JACK P.C.BOARD ..................................................................................................................3-57
5. FRONT P.C.BOARD................................................................................................................3-59
6. KEY P.C.BOARD.....................................................................................................................3-59
3-2
ELECTRICAL TROUBLESHOOTING GUIDE
1. System Part.
Check IC2080 signal flow.
Check IC2075 power supply
and ambient circuits.
NO
X102 :Clock vibration ?
(13.5 MHz )
IC2075 -11 :HIGH?
(/E5_RST )
Check
IC1066 -8 signal in Reset mode?
(/FCS0 )
Replace X102.
Check IC2066 power supply
and ambient circuits.
No logo appears
at Power on
NO
NO
YES
YES
YES
Checks SMPS.
NO
DRIVE at power
supply?
Check IC2080 signal flow
YES
2. Disc recognition unavailable
3-3
3. No Audio Output in DISC Play.
Check R120,FFC CABLE
signal flow.
YES
Check IC704 power supply
and ambient circuits.
NO
No output of IC710.
IC704 -46:HIGH ?
(LOW:AUDIO MUTE )
IC710 -1 :LOW?
(DAC RESET status)
PN6701
-26 :LOW status in the Tuner
Mode?(ADC1_SEL)
Is
IC710 -8,9 :I2C signal normal?
Is
IC710 -3,4,5,6:signal normal?
Check IC2084 -11, 38 signal
flow.
Check IC 2072 -2,3,18,19
Check R1A1,R118,R119,R121
Check IC710 power and
ambient circuits
Check IC714 power supply
and ambient circuits.
Check IC2078 16PIN,R264
NO
NO NO
Is
PN6701 -2 signal normal?
Check TR701,JK704
power and ambient circuits.
Check IC711 power, ambient
circuits.
NO NO
NO
NO
YES
YES
YESYES
YES
YES
4. No Optical / Digital Audio Output
3-4
5. No Tuner Sound
YES
Is the IC715,IC717-3 :
in Tuner Mode high?
Audio
signal appears even in the
outside input 1
Check
IC2072 -16,17 signal flow.
Check IC701 power and:
ambient circuits Check X704
vibration.
Check <No audio appears in
the outside input 1 mode>.
Check IC2084-11,38 signal
flow
NO
NO
NO
NO
YES
YES
No audio signal output
in the IC 701 -30,31
YES
Check C709,TUNER signal
flow
NO
Check IC701 -2
: SIF signal input
YES
Check IC704 power and
ambient circuits.
NO
Is the
IC704 -69 high after reset signal
in change of channel?
YES
Check IC706 power and
ambient circuits.
NO
No Sync signal input:
in the IC704 -39.
YES
Check Q724 (V. Buffer TR)
circuit.
TUNER power and ambient
circuit.
NO
No TUNER VIDEO
signal input.
YES
Check IC2072 -16,17 signal
flow
3-5
6. No Outside Input 1 Audio
Check IC2084-11,38 signal
flow.
NO
Check IC6037 I/O circuits.
NO
Is the
IC715,IC717 -3 in the
outside input 1 mode
low?
PN6701 -8 :HIGH?
(/RST_DAC)
Audio
appears even in DISC
Play.
Check IC715,IC717 (AUDIO SWITCH)
power and switching motion.
No. 3 pin High =>No.7 pin output: A1_L/R_1
No. 3 pin Low =>No. 7 pin output: TU_L/R
Check IC2072 -16,17
signal flow.
Check <No audio output
appears in DISC Play>.
A.
NO
NO
NO
YES
YES
Check IC715,IC717 -7
audio signal selection.
YES
Check IC716 (OP-AMP )
power and ambient circuits.
NO
Check IC712 -13,14:
Audio signal input.
YES
Check IC2084 -9, 40
=>IC2078 -14, 15 Signal flow.
Check IC712 power and
ambient circuits.
NO
NO
IC712 -16 :HIGH?
(/RST_ADC )
YES
Check
IC712 -2,3,7:signal input.
YES
Check IC12 -4:
DATA output.
YES
YES
Check IC2084 -5, 44 =>
IC2072 -6, 7 signal flow.
NO
IC6903 -1 :LOW?
(AI_SEL )
YES
Check IC6903 power and
ambient circuits.
3-6
7. No Outside Input 2 Audio
YES
Check <No audio output
appears in DISC Play>.
NO
Check IC6905 -13,14:
Audio signal input.
Audio
appears even in DISC
Play.
Check IC12 -4:
DATA output.
Check
IC712 -2,3,7 signal input.
IC6903 -1 :HIGH?
(AI_SEL)
Is
IC6903-4 in the outside
input 2 low?
(/AI_SEL )
Check IC712 power and
ambient circuits.
IC2033 power and signal flow
Check IC6903 power and
ambient circuits.
Check IC6904 (OP-AMP)
power and ambient circuits.
Check IC6037 I/O circuits.
Check IC6037 I/O circuits.
NO
NO NO
NO
NO
YES
YES
IC6905 -16 :HIGH?
(/RST_ADC )
Check IC2084 -9,40 =>
IC2078 - 14,15 signal flow.
NO
YES
YESYES
YES
3-7
8. No Signal of Component Screen in DISC Play.
YES
YES
NO
Check V.MUTE TR
(Q714,Q715 ) ambient circuits.
NO
Q714 Collector :LOW?
PN4701 -13 :No Y signal?
IC704 -52 :HIGH ?
(VIDEO MUTE )
Check IC2084 -3,46 =>
IC2081 - 4,5 signal flow.
Check IC712 power and
ambient circuits.
Check V. Buffer TR:Q752
power and ambient circuits.
No signal after checking
R777,773,727,728,CABLE?
Check IC1099=>IC4002
VO_D0 ~VO_D15 signal.
Check CIC4002 power and
ambient circuits.
Check X401 Clock generation
NO
NO
NO
YES
No Pb, Pr signal? No Y signal?
NO
YES
YES
IC4004 -8 :HIGH ?
/RST 7104
YES
Check IC2033 -8, 9
IC2001 - 4,5,6,8,9,10 Signal.
NO
NO
IC4004 -14,15
I2C CLK, DATA check
YES
Check IC4004 -19,20,36
Clock signal input.
NO
Check IC4009 -94 :VI_CLK0.
YES
YES
YES
Check IC4002 =>IC4004
PD0 ~PD7 signal.
Check
VO_CLK and IC4002 -22
Phase conversion?
YES
YES
Check
IC1099 =>IC4002 -37
VO_CLK signal?
3-8
YES
NO
NO
NO
NONO
NO
NO
Check V.MUTE TR (Q714,
Q715 ) ambient circuits.
NO
Q714 Collector :LOW?
IC4003 -8 :HIGH ?
/RST 7104
Check IC4003 -14,15
I2C CLK, DATA in resetting.
IC4003 -19,20,36
Check clock signal input.
Check
IC4002 =>IC4003
PD0 ~PD7 signal.
IC1099 =>IC4002 -37
VO_CLK signal check?
Check IC4009 -94 :VI_CLK0.
Check
VO_CLK and IC4002 -22
Phase reversion?
IC704 -52 :HIGH ?
(VIDEO MUTE )
Check IC712 power and
ambient circuits.
No signal after S-VIDEO:Y
signal?
Check V. Buffer TR :Q717
power and ambient circuits.
Check IC2084-3,46 =>
IC2081-4,5 signal flow.
Check IC2033-8,9 &
IC2001-8,9,10 signal flow.
Check X401 Clock generation.
No signal after COMPOSIT?
Check V. Buffer TR :Q716
power and ambient circuits.
No signal after S-VIDEO :C
signal?
Check R772, R724.
IC4002 power and
ambient circuits.
Check IC1099 =>IC4002
VO_D0 ~VO_D15 signal.
YES
YES
YES
YES
YES
YES YES
YES
YES
YES
9. No Signal of COMPOSIT / S-VIDEO Screen in Disc Play
3-9
NO
NO
NONO
IC4009 -27 :HIGH ?
(/RST 7114 )
Check
IC4009 -31,32
I2C CLK and DATA in the
Reset mode.
Check
IC6902 =>IC1009
VI_DD0 ~7,_CLK,_VSINC0
Signal.
Check
IC6902 -99 RESET
signal in the reset mode.
Check IC2075 RESET
signal I/O.
No signal of outside input 1
image (Composite input in
rear side)
Check C701 =>CABLE
=>IC4009 signal input.
Check IC2084 -1,13 =>IC2081 2,3 signal flow.
Check IC2001 -4,5,6
signal flow.
No signal of TV image in TV
connection
Check CABLE =>IC4009 signal
input after checking Tuner
power and ambient circuits.
No signal of outside input 2
image (S-VIEDO / Composite
input in front side)
Check JACK CABLE
=>IC4009 signal input.
Check <No signal of
COMPONENT, COMPOSIT/ SVIDEO screen in DISC play>.
YES
YES
YES
YES
NO
IC4009 -94,95 signal check?
(VI_CLK0,VI_VSYNC0 )
Check X401 Clock generation.
YES
NO
Check IC4009 =>IC6902
VI_D0 ~VI_D7 signal.
Check IC4009 power and
ambient circuits.
YES
YES
Check IC6901, 6902 power
And ambient circuits.
YES
10. No Signal of TV, outside input screen
3-10
11. No Signal of DV(IEEE 1394) input (screen/audio)
NO
NO
IC3048 -78:HIGH?
(/RST_PHY )
Check IC3048 -2 Clock?
BIO_PHY_CLK
Check IC2084 -8,41 =>
IC2078 -12,13 signal flow.
Check X301 Clock.
24.576 MHz
Check DV_JACK and
CABLE connection.
Check IC3048 -42, 43, 4,
45 signal input.
YES
YES
YES
YES
NO
Check IC3048 =>IC1009
BIO_PHY_DATA/CLK
Signal.
Check IC3048 power and
ambient circuits.
YES
Check <No signal of COMPONENT,
COMPOSIT/S-VIDEO screen in
DISC play>
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