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PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS
CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY,
NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFAC-
TURER'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
INCREASES THE RISK OF POTENTIAL HAZARDS AND INJURY TO THE
USER.
WHILE SERVICING, USE AN ISOLATION TRANSFORMER FOR PROTEC-
TION FROM A.C. LINE SHOCK.
SAFETY CHECKS
AFTER THE ORIGINAL SERVICE PROBLEM HAS BEEN CORRCTED. 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 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 ALL LOOSE 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 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 CIR-
CUIT MODIFICATIONS.
7. AFTER RE-ASSEMBLY OF THE SET ALWAYS PERFORM AN A.C.
LEAKAGE TEST ON ALL EXPOSED METALLIC PARTS OF THE CABI-
NET, (THE CHANNEL SELECTOR KNOB, ANTENNA TERMINALS. HAN-
DLE 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. VOLT-
METER, HAVING 5000 OHMS PER VOLT OR MORE SENSITIVITY, IN
THE FOLLOWING MANNER; CONNECT A 1500 OHM 10 WATT RESIS-
TOR, PARALLELED BY A .15 MFD. 150.V A.C TYPE CAPACITOR
BETWEEN A KNOWN GOOD EARTH GROUND (WATER PIPE, CON-
DUIT, 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.
A.C. VOLTMETER
GOOD EARTH GROUND
SUCH AS THE WATER
PIPE. CONDUIT. ETC
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 A RISK OF ELECTRIC SHOCK.
THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIAN-
GLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO
THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN
SERVICE LITERATURE.
All manuals and user guides at all-guides.com
DO
OTHERWISE,
PLACE THIS PROBE
ON EACH EXPOSED
METAL PART
1-3
SUBJECT : X-RADIATION
1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PER-
SONNEL COVER THE SUBJECT OF X-RADIATION. THE ONLY POTEN-
TIAL SOURCE OF X-RAYS IN CURRENT T.V. RECEIVERS IS THE PIC-
TURE 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. OPERA-
TION AT HIGHER VOLTAGES MAY CAUSE A FAILURE OF THE PIC-
TURE TUBE OR HIGH VOLTAGE SUPPLY AND, UNDER CERTAIN CIR-
CUMSTANCES, MAY PRODUCE RADIATION IN EXCESS OF DESIR-
ABLE 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
AT YOUR 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 ORGA-
NIZATION REVIEW TEST PROCEDURES SO THAT VOLTAGE REGU-
LATION IS ALWAYS CHECKED AS A STANDARD SERVICING PROCE-
DURE. 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
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, CUBBY-
HOLE 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 RADIA-
TORS WHERE STEAM LEAKAGE IS A FACTOR, ETC.
3. AVOID PALCEMENT WHERE DRAPERIES MAY OBSTRUCT REAR
VENTING. THE CUSTOMER SHOULD ALSO AVOID THE USE OF DEC-
ORATIVE SCARVES OR OTHER COVERINGS WHICH MIGHT
OBSTRUCT VENTILATION.
4. WALL AND SHELF MOUNTED INSTALLATIONS USING A COMMER-
CIAL 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 HAZ-
ARDS 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 T.V.'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 SIN-
GLE OUTLET CAN LEAD TO DISASTROUS CONSEQUENCES TO
HOME AND FAMILY.
DURING
INSTALLATION, AVOID
Table of Contents
Related Manuals for LG DVD2300
Summary of Contents for LG DVD2300
- Page 1 All manuals and user guides at all-guides.com PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY, SUBJECT : X-RADIATION NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFAC- 1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PER- TURER’S APPROVAL.
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Page 2: Servicing Precautions
All manuals and user guides at all-guides.com SERVICING PRECAUTIONS CAUTION : Before servicing the DVD player covered by this Electrostatically Sensitive (ES) Devices service data and its supplements and addends, read and fol- Some semiconductor (solid state) devices can be damaged low the SAFETY PRECAUTIONS. -
Page 3: Specifications
All manuals and user guides at all-guides.com SPECIFICATIONS DVD VIDEO PLAYER Power supply 100~240V, 50/60Hz Power consumtion Mass 3.5kg(7.7lbs) External dimensions 430 x 80 x 298 (W x H x D) Signal system NTSC Laser Semiconductor laser, wavelength 655nm(DVD)/795nm(CD) Frequency range (digital audio) 2Hz to 44kHz Signal-to-noise ratio (digital audio) More than 105dB (EIAJ) -
Page 4: Location Of Customer Controls
All manuals and user guides at all-guides.com LOCATION OF CUSTOMER CONTROLS F R O N T PA N E L 3 4 5 slow/scan pause/step menu select/enter power open/close play stop skip R E A R PA N E L DOLBY DIGITAL 5.1CH COMPONENT AUDIO... -
Page 5: Display Window
All manuals and user guides at all-guides.com Display Window 1. Title number indicator 6. Total playing time 2. DVD indicator /elapsed time indicator 3. CD indicator 7. Operating status indicator 4. Repeat playback mode indicators 8. Angle icon indicator 5. RANDOM indicator 9. -
Page 6: Cabinet Disassembly
All manuals and user guides at all-guides.com DISASSEMBLY CAUTION BEFORE STARTING SERVICING Electronic parts are susceptible to static electricity and may easily damaged, so do not forget to take a proper grounding treatment as required. Many screws are used inside the unit. To prevent missing, dropping, etc. of the screws, always use a magnetized screw driver in servicing. -
Page 7: Circuit Board Disassembly
All manuals and user guides at all-guides.com CIRCUIT BOARD DISASSEMBLY Note: 3. Digitron and Key Circuit Board Before removing the main circuit board, be sure to 1. Remove the front panel.(See Fig. 2-3) shortcircuit the laserdiode output land. 2. Release 8 screws(E), and remove the digitron After replacing the main circuit board, open the land circuit board. - Page 8 All manuals and user guides at all-guides.com PBJ00...
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Page 9: Packing Accessory Section
All manuals and user guides at all-guides.com 2.Packing Accessory Section CABLE BATTERY REMOCON OWNER'S MANUAL PACKING SHEET PACKING PACKING BOX CARTONX 3.Remote Control Section... -
Page 10: Power Circuit
All manuals and user guides at all-guides.com ELECTRICAL TROUBLESHOOTING GUIDE 1. Power Circuit • Input Voltage : 90V - 135V • It is possible to malfunction, if the unload condition is left for a long time when power is on. (More than Dummy load 100mA) •... -
Page 11: Μ-Com Circuit
All manuals and user guides at all-guides.com 2. µ-COM Circuit A. No Power POWER ON Power RED LED on? Refer to Front Part. Does Bar appear at FLD? Is CON107 Do all five Bars appear? connected normally? Reconnect it. Does Logo appear Check power. -
Page 12: Audio Abnormal
All manuals and user guides at all-guides.com B. Audio abnormal C. Video abnormal AUDIO ABNORMAL VIDEO ABNORMAL Check Audio jack. Check Video jack. YES (If OK) YES (If OK) Check PLL FC of MPEG part. Refer to Video part. YES (If OK) YES (If OK) Refer to Audio part. -
Page 13: Disc Error
All manuals and user guides at all-guides.com E. Picture abnormal PICTURE ABNORMAL Check the disc. Refer to Servo part If OK Check PLL IC of MPEG part YES (If OK) Check DSP YES (If OK) Check MPEG YES (If OK) Replace B/D F. -
Page 14: Mpeg Circuit
All manuals and user guides at all-guides.com 3. MPEG Circuit Power is on Does LG Logo appear Check power & clock. on the screen? Does the Check CD/DVD DSP output moving picture of the DVD Disc Is MPEG data signal normal? play on the screen signal. -
Page 15: Front Circuit (Digitron & Key)
All manuals and user guides at all-guides.com 4. Front Circuit (Digitron & key) START Power on. Is oscillation of Check Power. LED ON? X501 normal? Check waveform Is Digitron on normally? Replace IC501. of IC500 Pin Do all the Is waveform of IC500 Check waveform buttons work Pin78... -
Page 16: Rf/Servo Circuit
All manuals and user guides at all-guides.com 5. RF/Servo Circuit CHECK POINT(General) Does signal goes "High" to IC206 Pin194 when the power is on? Does signal pulse Check "2.µ-COM Part". input to IC206 Pin when the powe is on? Does Does Replace X301 or TTL pulse output to... - Page 17 All manuals and user guides at all-guides.com No disc Power on Check loading Part. Push Pick-up to inner track to Does tray open or close? the end by hand. Does DECK assembly is defective. CON202 Pin17 change (Limit sw) high to low? Pressing the open/close key repeatedly, check the voltage of...
- Page 18 All manuals and user guides at all-guides.com DISC IN OPEN/CLOSE Fig.3. FOCUS ERROR waveform Check Check IC201 Pin in DVD Mode the focus error moving the FOCUS ON? lens up and down. Check IC201 Pin in CD Mode (IC201 Pin 21) IC201 no output : Pick-up is defective.
- Page 19 All manuals and user guides at all-guides.com CHECK A Fig.5. RF waveform Check RF Eye-Pattern. Check IC201 Pin in DVD Mode. No signal: Pick-up is defective Check IC201 Pin in CD Mode. RF : 1.0-2.1V(IC201 Pin 28) Does the sawtooth waveform emit Is the eye-pattern vivid? Does the 1.6V emit? Replace IC201.
- Page 20 All manuals and user guides at all-guides.com DISC DVD_LDQM, DVD_SD_CS1 RFRP, RFCen, IC307 TE, Vref DVD_MA[0:11] GM72V1621 Comp. DRAM 1M x 16bit DVD : A, B, C, D 256K x 16bit DVD_MD[0:15] IC201 SDRAM DVD : RF TA1254F CD : A, B, E, F FE, TE, RFRP, SBADD, DVD/CD RF RF SIGNAL PICK...
- Page 21 All manuals and user guides at all-guides.com RECTIFIER(FLD) -24V RECTIFIER(14V) RECTIFIER(10V) REG(8V) RECTIFIER(5.2V) FEED B. PWR ON/OFF AC85~135V...
- Page 22 All manuals and user guides at all-guides.com RFRP , RFCen, TE, Vref MIRR,TZC Comp. SENS, FOK, SLD_FG, DVD : A,B,C,D MSDATO, DEFECT, DSP_SENSE RFZ_HOLD SQSO, SQCK, SCOR UCOM PICK DVD : RF XLAT,S_CLK, S_DATA FE,TE,RFRP ,SBADD CD : A, B, E,F IC206 IC201 DVD/CD RF...
- Page 23 All manuals and user guides at all-guides.com MPEG_RST S_DATA U-com I/F S_CLK IC704 (IC108) DAC_L0 IC703 LPF & PCM1716 Buffer DA_LRCK Audio DAC NJM4580M DA_BCK DA_XCK OP AMP DA_DATA0 CH 1/2 : DOWNMIX Lt / Rt IC601 IC604 LPF & PCM1716 DA_DATA1 Buffer...
- Page 24 All manuals and user guides at all-guides.com DA_DATA[0:3] DVD_DATA[0:7] DA_BCK AUDIO SDCLK1,ZISENB SPDIF IC301 REQZ1 ZiVA-3 MPEG A/V HSYNC, VSYNC Decoder IC800/IC801 A[00:02] VDATA[0:7] UCOM BT865A/861A VIDEO D[00:07] DA_XCK NTSC/PAL COMPOSITE1 MPEG_ERROR Encoder MPEG_CLK IIC_DATA, IIC_CLK DVD_SD_CS0, DVD_UDOM DVD_LDOM, DVD_MD[0:15] DVD_SD_CSI DVD_MA[0:11] DVD_SD_CAS...
- Page 25 All manuals and user guides at all-guides.com BCA_CODE SPINDLE_FG, SLD_FG, SERVO MPEG D[00:07], A[00:05], E_SIN, E_CLK D[00:07], A[00:02], IIC_CLK, IIC_DATA, SCLK0, LOAD FR, F/R, LOCK, DEFECT, FOK, MPEG_INT DSP_SENSE IIC_CLK, IC114 IIC_DATA EEPROM AT24C02 MPEG_ERROR, DAC_L0, IC102 RF_LAT, D[00:07] MPEG_CTL, /DSP_CS, 74HC374 SENS_MCOM,...
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Page 26: Power(Smps) Circuit Diagram
All manuals and user guides at all-guides.com CIRCUIT DIAGRAM IMPORTANT SAFETY NOTICE NAL CIRCUIT SPECIAL COMPONTS ARE SHADED ON NOTE : THE SCHEMATIC FOR EASY IDENTIFICATION. 1. Shaded( ) parts are critical for safety. Replace only WHEN SERVICING THIS CHASSIS, UNDER NO CIR- THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIF- with specified part number. - Page 27 All manuals and user guides at all-guides.com 2. RF & DVD DSP CIRCUIT DIAGRAM IC209 is defective AD Converter Error IC204 is defective Q202 is defective. being slipped during search. DVD LD will not be on. TZC Mirr. Generator AD Ref. Voltage Gen RF/TE/FE Signal generation...
- Page 28 All manuals and user guides at all-guides.com 3. DRIVE CIRCUIT DIAGRAM SPINDLE MOTOR DRIVE SPINDLE FOCUS TRACKING SLIED DOOR 3-22 3-23...
- Page 29 All manuals and user guides at all-guides.com 4. MPEG & ENCODER CIRCUIT DIAGRAM No power on 3.3V Reg. No power on No power on µ-com->MPEG address The screen is distorted(DVD) VIDEO ENCODER Over 3V->Data error. GND:OK No VCD screen display(option). No CD sound out.
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Page 30: Audio Circuit Diagram
All manuals and user guides at all-guides.com 5. AUDIO CIRCUIT DIAGRAM IC712, 713 are defective Audio bad IC604 is defective Q703,704 are defective Q601 is defective IC705,706,707 are defective 5.1CH FL/FR Audio out bad Headphone output bad 5.1CH FL/FR Audio out bad Audio POP noise or 2CH Audio out bad IC704 is defective 2CH Audio out bad... -
Page 31: Μ-Com/Expander Circuit Diagram
All manuals and user guides at all-guides.com 6. µ-COM/EXPANDER CIRCUIT DIAGRAM Servo will not operate OPTION(DIVX) SDRAM FLASH ROM AT49F8192A-90TC/AM29F800BB GM71C4260CJ60 R197 OPEN BCA DECODER D[00:15] ; FLD Error A[00:21] ;FLD Error MAIN CPU Video output level is unstable EEPROM X101;... - Page 32 All manuals and user guides at all-guides.com 7. FRONT(TIMER) & KEY CIRCUIT DIAGRAM SW509 is defective DIG501 is defective Direction Key is defect FLD is distorted 4 Direction S/W ENTER SFUTTLE FRONT CONTROL RESET JS500 is defective SCAN +/- wll not operate Remocon RE500 is defective Receiver...
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Page 33: Jack Circuit Diagram
All manuals and user guides at all-guides.com 8. JACK CIRCUIT DIAGRAM EXT/DVD can’t be changed 16:9 can’t be changed Scart Mode can’t be changed OPTICAL S VIDEO (C) COMP.VIDEO AUDIO (L) S VIDEO (Y) AUDIO (R) 3-34 3-35...