AV-20FD22 SPECIFICATIONS GENERAL Power supply: AC 120V 60Hz Power consumption: Operation: 120W Stand by: 8W Weight: 56.1lbs (25.5 kg) Dimensions: Width : 22-5/8 inches (574 mm) Height: 20-3/8 inches (515 mm) Depth : 19-1/8 inches (483 mm) TELEVISION Picture tube:...
Page 3
AV-20FD22 SAFTY PRECAUITONS CAUTION THIS DIGITAL VIDEO PLAYER EMPLOYS A LASER SYSTEM. TO ENSURE PROPER USE OF THIS PRODUCT, PLEASE READ THIS SERVICE MANUAL CARE- FULLY AND RETAIN FOR FUTURE REFERENCE. SHOULD THE UNIT REQUIRE MAINTENANCE, CONTACT AN AUTHORIZED SERVICE LOCATION-SEE SERVICE PROCEDURE.
AV-20FD22 IMPORTANT SERVICE SAFETY INFORMATION Operating the receiver outside of its cabinet or with its The picture tube used in this receiver employs integral back removed involves a shock hazard. Work on these implosion protection. Replace with a tube of the same models should only be performed by those who are type number for continued safety.
AV-20FD22 IMPORTANT SAFEGUARDS READ INSTRUCTIONS All the safety and operating instructions should be read before the unit is operated. RETAIN INSTRUCTIONS The safety and operating instructions should be retained for future reference. HEED WARNINGS All warnings on the unit and in the operating instructions should be adhered to.
Page 6
AV-20FD22 IMPORTANT SAFEGUARDS (CONTINUED) DAMAGE REQUIRING SERVICE Unplug this unit from the wall outlet and refer servicing to qualified service personnel under the following conditions: When the power-supply cord or plug is damaged. If liquid has been spilled, or objects have fallen into the unit.
AV-20FD22 SPECIFIC SERVICE INSTRUCTIONS DISASSEMBLY INSTRUCTIONS 1-3: TV/DVD BLOCK (Refer to Fig. 1-3) 1. REMOVAL OF MECHANICAL PARTS Remove the 2 screws 1. AND P.C. BOARDS Disconnect the following connectors: 1-1: BACK CABINET (Refer to Fig. 1-1) (CP104, CP301, CP302, CP401 and CP502).
Page 8
AV-20FD22 DISASSEMBLY INSTRUCTIONS 1-5: FRONT TRAY PLATE/TOP SHIELD (Refer to Fig. 1-5) Remove the Front Tray Plate in the direction of arrow (A). CD Deck Remove the 9 screws 1. Remove the Top Shield in the direction of arrow (B).
AV-20FD22 DISASSEMBLY INSTRUCTIONS 3. After one side is removed, pull in the opposite direction 2. REMOVAL OF ANODE CAP to remove the other. Read the following NOTED items before starting work. NOTE After turning the power off there might still be a potential Take care not to damage the Rubber Cap.
AV-20FD22 SERVICE MODE LIST This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily. To enter the Service Mode, press both set key and remote control key. Press both the VOL. key and remocon keys simultaneously for more than 1 second.
AV-20FD22 SELF-DIAGNOSIS The Self-Diagnosis function will operate when both STOP button on the set and Channel button (9) on the remote control are pressed simultaneously (for more than 3 seconds) at DVD LOGO screen with No Disc. NOTE: No diagnosis of FL CHECK on the TV/DVD Player.
AV-20FD22 NOTE FOR THE REPLACING OF MEMORY IC If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to ensure correct data settings while making reference to TABLE 1.
AV-20FD22 SERVICE ADJUSTMENT ELECTRICAL ADJUSTMENTS BEFORE MAKING ELECTRICAL FUNCTION FUNCTION ADJUSTMENTS R CUT OFF BRI. AV(CENT.) G CUT OFF BRI. AV(MAX) Read and perform these adjustments when repairing the B CUT OFF BRI. AV(MIN) G DRIVE COL. AV(CENT.) circuits or replacing electrical parts or PCB assemblies.
Page 14
AV-20FD22 ELECTRICAL ADJUSTMENTS 2-4: WHITE BALANCE 2-9: VERTICAL SHIFT NOTE: Adjust after performing CUT OFF adjustment. NOTE: Adjust after performing adjustments in section 2-8. Place the set with Aging Test for more than 15 minutes. Receive the center cross signal from the Pattern Receive the white 100% signal from the Pattern Generator.
Page 15
AV-20FD22 ELECTRICAL ADJUSTMENTS 2-14: CORNER CORR BOTTOM 2-18: SUB BRIGHT CENTER Receive the crosshatch signal from the Pattern Receive the monoscope pattern. (RF Input) Generator. Using the remote control, set the brightness and Using the remote control, set the brightness and contrast to normal position.
Page 16
AV-20FD22 ELECTRICAL ADJUSTMENTS 2-20: SUB TINT CENTER 2-21: SUB COLOR CENTER Receive the color bar pattern. (RF Input) Receive the color bar pattern. (RF Input) Using the remote control, set the brightness, contrast, Using the remote control, set the brightness, contrast, color and tint to normal position.
AV-20FD22 ELECTRICAL ADJUSTMENTS PURITY AND CONVERGENCE 3-3: STATIC CONVERGENCE ADJUSTMENTS NOTE Adjust after performing adjustments in section 3-2. NOTE Receive the crosshatch pattern from the color bar Turn the unit on and let it warm up for at least 30 generator.
AV-20FD22 GUIDE FOR REPAIRING MAJOR COMPONENTS LOCATION GUIDE IC101 IC701 TP901 IC601 TU001 CP101 AV PCB R449 TP401 J801 TP803 TP801 T501 CRT PCB FB401 VR502 FOCUS VOLUME SCREEN VOLUME MAIN PCB...
Page 19
AV-20FD22 IC DESCRIPTION OEC6063A Symbol Logic Function Function Negative power supply (Ground) X-RAY TEST Output X-RAY test output C-MOS RGB/COMP Output It changes "Rgb/Composite" picture signal for "DVD". C-MOS TV MUTE Output Volume muting output C-MOS EXT MUTE Output External picture/volume muting output...
AV-20FD22 TROUBLESHOOTING GUIDE (TV SECTION) NO POWER(1) When it pushed Check of AT +8V line and AT POWER ON SW as for +5V line. LED is it lighted? Is the voltage at Check Q505 and associated pin1 of Q505 circuit.
Page 21
AV-20FD22 TROUBLESHOOTING GUIDE NO POWER(2) Change of F501. F501 OK? Is the voltage at Check D501 and associated pin8 of T501 circuit. DC170V? Is the voltage at pin1 of Change of T501. IC501 DC16V? Is the voltage at pin4 Change of IC501.
Page 22
AV-20FD22 TROUBLESHOOTING GUIDE NO SOUND INSERT CD301 & CD302. CD301&CD302 INSERT OK? Is the voltage at Check SOUND +B Line. pin1 of IC302 DC6.6V? Is the voltage at Check TV POWER H Line and pin5 of IC302 associated circuit. DC3.9V? Check Q301 and A_MUTE Line.
Page 23
AV-20FD22 TROUBLESHOOTING GUIDE NO PICTURE Is the setting of BRIGHT is adjusted to center, the BRIGHT center CONTRAST is adjusted to max. and CONTRAST max? Is the voltage at Check P.CON+9V Line. pin23,36,53 of IC601 DC9V? Is the voltage at Check CHROMA+5V Line.
Page 24
AV-20FD22 TROUBLESHOOTING GUIDE NO COLOR Is the setting of the Adjust the COLOR setting. COLOR central? Is the receiving of Receive the color signal. the color signal? Is the waveform at Check X601 associated circuit. pin42 of IC601 normal? Check IC601 and associated...
Page 25
AV-20FD22 TROUBLESHOOTING GUIDE NO VERTICAL Is the normal signal Check IC601 associated output to 34PIN of circuit. IC601? Is the normal signal Check R449 and Q401. input in the base of Q405? Is the normal signal Check FB401 and associated output to 9PIN of circuit.
Page 26
AV-20FD22 TROUBLESHOOTING GUIDE NO OSD Is there the waveform Check IC601 associated of 22,23 and also circuit. 24PIN of IC101? Is there the waveform Check IC601 associated of 20,21 and also circuit. 22PIN of IC601? Check the pin25 of IC101 and...
Page 27
AV-20FD22 TROUBLESHOOTING GUIDE (DVD SECTION) DVD DECK NO OPEN/CLOSE CHECK CHECK DISPLAY DVD CONNECTION CHECK CABLE CD811. OSD. CD811. CHECK MAIN PCB (P.CON 5V,PCON. 9V,P.CON 5V_D). POSSIBLE TO OPEN/CLOSE CHANGE DVD DECK. BY MECHANIC. REFER TO "INSTABILITY DVD DVD MODE STABILITY.
Page 28
AV-20FD22 TROUBLESHOOTING GUIDE DVD NO PICTURE CHECK CONNECTION CONNECTION TRY CD4002. AGAIN CD4002. CHECK DVD DECK CONNECTOR CHANGE DVD DECK. BEND OR SHORT? CHECK OSILLATION CHANGE X1001. OF X1001. CHECK OUTPUT SIGNAL CHANGE IC8501. IC8501 49,50PIN? CHANGE IC4001.
Page 29
AV-20FD22 TROUBLESHOOTING GUIDE DVD NO PLAY CHECK CHECK DVD DECK AFTER READING,CHECK CONNECTION CONNECTOR BEND OR "INCORRECT DISC"DISPLAY. CD4001. SHORT? CONNECTION TRY AGAIN CD4001. WHEN PLAY,CHECK THE CHANGE DVD DECK. DECK MOTOR TUCH. CHECK OUTPUT SIGNAL CHECK THE CIRCUIT IC8501 8,10,13PIN? AROUND IC701.
Page 30
AV-20FD22 TROUBLESHOOTING GUIDE INSTABILITY DVD MODE CHECK CONNECTION CONNECTION TRY AGAIN CD4002. CD4002. CHECK DVD DECK CHANGE DVD DECK. CONNECTOR BAND OR SHORT? CHECK CONNECTION CONNECTION TRY AGAIN CP8002,CP8003. CP8002,CP8003. CHANGE DVD DECK.
Page 31
AV-20FD22 TROUBLESHOOTING GUIDE CD NO PLAY WHEN READING, CHECK THE DECK CHANGE DVD DECK. MOTOR TURN. CHECK DVD DECK CHANGE DVD DECK. CONNECTOR BEND OR SHORT? CHECK INPUT SIGNAL CHECK CONNECTION CP4002 IC4001 3,5,6PIN? & AROUND THE CIRCUIT. CHANGE IC4001.
Page 32
AV-20FD22 AV-20FD22 AV-20FD22 STANDARD CIRCUIT DIAGRAM NOTE ON USING CIRCUIT DIAGRAMS 1.SAFETY The Components identified by the symbol are critical for safety. For continued safety, replace safety critical components only with manufacturers recommended parts. 2.INDICATION OF PARTS SYMBOL [EXAMPLE] In the PC board...
AV-20FD22 AV-20FD22 BLOCK DIAGRAM TV BLOCK DIAGRAM FROM OPERATION BLOCK RESET IC102 PST600C AT+5V TU001 VOL UP MAIN IC101 OEC6063A VOL DOWN X101 16MHz Q103 CH UP H.BUFFER Q205 Q105 PRE AMP CH DOWN BUFFER SAW FILTER FROM DVD BLOCK...
AV-20FD22 AV-20FD22 DVD BLOCK DIAGRAM AUDIO SW TO TV BLOCK IC8504 SN74LV4052APW Q7013, Q7005 SPDIF(CD) DVD REQ J7002 LINE DRIVER COAXIAL SPDIF(DVD) DIGITAL OUT DVD ROM DRIVE DVD ERR,DVD SOS,DVD VALID,DVD STB DVD: "L" DVD/CD CD : "H" ZERO DVD DATA (0-7)
AV-20FD22 AV-20FD22 WIRING CONNECTION DIAGRAM INTERCONNECTION DIAGRAM COMMAND TRANSMITTER TM101 OS101 Vout HEADPHONE OPERATION PCB J301 PCB030 CAUTION: SINCE THESE PARTS MARKED BY TEAA65 CRITICAL FOR SAFETY,USE ONES DESCRIBED IN PARTS LIST ONLY TO OS751 ATTENTION: LES PIECES REPAREES PAR UN...
AV-20FD22 AV-20FD22 [ AV PWB(POWER) CIRCUIT DIAGRAM ] POWER SCHEMATIC DIAGRAM (AV PCB) DIGITAL AUDIO SIGNAL(PB) PLAYBACK LUMINANCE SIGNAL CAUTION: SINCE THESE PARTS MARKED BY ATTENTION: LES PIECES REPAREES PAR UN ETANT NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME...
Page 59
AV-20FD22 AV-20FD22 WAVEFORMS MPEG VIF/SIF/CHROMA SDRAM MICON/TUNER SOUND AMP VIDEO ENCODER IN/OUT NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram. NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
AV-20FD22 1, 7, 8, 9, 10, 11, 12 ACCESSORY REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION RM-C394G TRANSMITTER X-791WHA0085 LAMIFILM,BAG X-792WHA0315 PACKAGE,TOP X-792WHA0316 PACKAGE,BOTTOM X-793WCD1340 GIFT BOX X-A58702R975 INSTRUCTION BOOK KIT X-JB5KD500 POLYBAG X-J5500112 GUARANTEE CARD X-J5500115 SERVICE STATION LIST...
Page 73
JVC SERVICE & ENGINEERING COMPANY OF AMERICA DIVISION OF JVC AMERICAS CORP. Head office : 1700 Valley Road, Wayne, New Jersey 07470 (973)315-5000 East Coast : 10 New Maple Avenue, Pine Brook, New Jersey 07058 (973)396-1000 Midwest 705 Enterprise St. Aurora, Illinois 60504...