Panasonic NV-SJ420EG Service Manual Download

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ORDER NO. VRD0103012C2

Video Cassette Recorder

NV-SJ420EG / NV-SJ420EGM / NV-SJ420EGN / NV-

SJ420EGY / NV-SJ420B

Z-MECHANISM

SPECIFICATIONS

2001 Matsushita Electric Industrial Co., Ltd. All rights reserved.
Unauthorized copying and distribution is a violation of law.

Summary of Contents for NV-SJ420EG

Page 1: ...o Cassette Recorder NV SJ420EG NV SJ420EGM NV SJ420EGN NV SJ420EGY NV SJ420B Z MECHANISM SPECIFICATIONS 2001 Matsushita Electric Industrial Co Ltd All rights reserved Unauthorized copying and distribution is a violation of law 1 ...

Page 2: ... for Z Mechanism Chassis Order No VRD9802005C2 2 The Model No is indicated on the Schematic Diagram and Circuit Board Diagrams as follows Model No Indication Mark NV SJ420EG EGM EGN A NV SJ420EGY B NV SJ420B C 2 GENERAL DESCRIPTIONS 2 1 SERVICE CAUTION 2 1 1 REPLACING IC7702 EEPROM When the EEPROM IC7702 is replaced applicable model code option code and electrical adjustment data will not be avail...

Page 3: ...tivate the Entering Mode 3 Press the EJECT key for more than 3 seconds Set the Mode 2 4 Press the CH UP key in twice Display the Setting Code 5 Press the POWER Button to turn the power on Colon starts flashing Enter the Model and Option Code 6 Set the applicable Model and Option code by using REW PLAY STOP and FF keys on the Remote Controller See Fig S1 S2 Exit from Service Mode 7 Press the POWER ...

Page 4: ...tment continuously 2 1 2 CYLINDER UNIT REPLACEMENT 1 CYLINDER UNIT REPLACEMENT A Remove the mechanism unit from MAIN C B A Chassis by referring SECTION 2 Disassembly Procedure B Remove the 3 screws A of the CYLINDER UNIT with a screw driver C Unlock the 4 locking tabs B and disconnect the Cylinder fiexible card from the FPC Holder D Remove the CYLINDER UNIT CAUTION Handle the Cylinder fiexible car...

Page 5: ...R DISASSEMBLY A Remove 2 screws A B Remove the Cylinder Stator Unit C Remove 2 screws B D Remove the Cylinder Rotor Unit E Loose Hex screw C 1 5 mm and remove the CYLINDER RETAINER F Remove the Upper Cylinder Fig S4 5 ...

Page 6: ... steps in the reverse order Notes 1 Install the Cylinder Retainer so that the 2 holes on top of the Cylinder Retainer are at right angles with the P3502 Connection 2 Tighten the Hex screw C 1 5 mm while pressing down on top of the Cylinder Retainer Fig S5 6 ...

Page 7: ...nner hole of the Cylinder Rotor Unit fits to the small projection D on top of the Upper Cylinder 4 Tighten 2 screws B Fig S6 5 install the Cylinder Stator Unit 6 Tighten 2 screws A Fig S7 7 Confirm the PG SHIFTER ADJUSTMENT with the alignment tape 7 ...

Page 8: ...the cable contacts facing the connector contacts Fig S9 2 2 REMOVAL OF CASSETTE TAPE There are 2 ways to remove a cassette tape 1 Service Information Display Operation A Press the FF and EJECT keys simultaneosly for 3 seconds and set the Service Mode 7 B Press STOP key in order to rotate the Loading Motor for unloading operation Pay an attention of tape slack 2 Manual Operation A Disconnect the AC...

Page 9: ...ejected 2 3 INTRODUCTION OF VIDEO HEAD CLEANING CASSETTE POLISHING TYPE 1 We are pleased to introduce Panasonic Video Head Cleaning Cassette VFK0923FT for service purposes and VFK0923FSE for end users for all VHS SVHS VCP and VCR 2 These cleaning cassettes are exclusive removing the hard and sticky clogging on video heads 3 These improve the efficiency of video head cleaning service and shortening...

Page 10: ...sette Full VHS Cassette Cleaning Time 10 Seconds Time Tape Length 20 m Usability in a Path 180 Times VFK0823FSE For end users Type of Cassette Full VHS Cassette Cleaning Time 10 Seconds Time Tape Length 3 34 m Usability in a Path 30 Times 10 ...

Page 11: ...s undesirable condition it can be displayed a Error code Two numbers from the left with Service Mode 2 Since the Error code is stored in the EEPROM it can be displayed although after disconnected the AC leads It can be displayed with Service Mode 2 If a second error had been detected only the most recent error is displayed For more details refer to the Service Manual for Z Mechanism Chassis Order ...

Page 12: ...rding signal is less than the normal condition Protection of the over current flowing transistor which produces the power for recording mode 08 Recording circuit works except recording mode Check the recording circuit 16 Cylinder lock detection Check the cylinder unit and the cylinder drive circuit 17 Supply reel mechanism lock detection Check the supply reel mechanism and supply reel circuit 18 T...

Page 13: ...3 1 2 DETAIL OF DISASSEMBLY METHOD 1 REMOVAL OF THE TOP PANEL Remove 4 Screws A Fig D2 2 REMOVAL OF THE FRONT PANEL UNIT Unlock 7 Tabs B Fig D3 13 ...

Page 14: ... SHIELD PLATE Remove Screw D Remove 3 Screws E Remove 2 Screw F Note 1 Keep pressing 2 stoppers on Cassette Holder Plate and Press Cassette Holder Plate to the rear 2 Remove the Mechanism Unit after bend the Cylinder Shield in the direction of the arrow Fig D4 14 ...

Page 15: ...MOVAL OF THE MAIN C B A Remove 4 screws G Unlock 4 Tabs H Fig D5 NOTE Before mounting the MAIN C B A onto the frame be sure to confirm that the insulation sheet is mounted on the frame as shown in Fig D6 15 ...

Page 16: ...ssis Order No VRD9802005C2 3 3 ELECTRICAL ADJUSTMENT PROCEDURES 3 3 1 TEST EQUIPMENT The following equipments are required for Electrical Adjustments 1 Dual Trace Oscilloscope Voltage Range 0 005 5V div Frequency Range DC 35MHz Probes 10 1 1 1 2 Frequency Counter Frequency Range 0 10MHz Probes 1 1 3 Universal Counter 16 ...

Page 17: ...tion in the procedure set each selector as follows 1 TAPE SPEED SP 2 CHANNEL AV1 AV2 AV3 Set to signal input terminal number 3 3 3 ADJUSTMENTS ITEM TP ADJ MODE INPUT TAPE M EQ SPEC REMARKS PG SHIFTER ADJUSTMENT PLAYBACK ALIGNMENT TAPE PAL Refer to procedure PG SHIFTER ADJUSTMENT shown in Fig E3 AI FUNCTION ADJUSTMENT PLAYBACK SELF REC PAL COLOUR BAR BLANK TAPE Refer to the procedure of FUNCTION AD...

Page 18: ...VIDEO SWEEP See Fig E1 BLANK TAPE OSCILLO SCOPE VIDEO SWEEP GENERATOR SP 0 1 dB 90 110 LP 0 1 dB 90 110 EP 0 3 dB 70 140 LP EP MODE B BL ONLY SeeFig E2 Refer to the procedure of FREQUENCY RESPONSE ADJUSTMENT shown in Fig Fig E1 Fig E2 CONDITION BURST SIGNAL OFF 75 ohm TERMINATED 3 3 4 PG SHIFTER ADJUSTMENT AUTOMATIC 18 ...

Page 19: ...tape PAL VFJ8125H3F When the sequence of the automatical adjustment has been terminated the following action has been made SUCCEED The cassette tape is ejected ERROR The F2 is displayed on the FIP Check the Servo Syscon circuit and Cylinder unit Release the Service mode by pressing the EJECT and FF keys simultaneously in 6 times until the FIP becomes normal indication Fig E3 3 3 5 AI FUNCTION ADJU...

Page 20: ...essfully the VCR goes to STOP mode Release the Service mode by pressing the EJECT and FF keys simultaneously in 6 times until the FIP becomes normal indication Fig E4 3 3 6 VIDEO FREQUENCY RESPONSE ADJUSTMENT PROCEDURES FIP DISPLAY Input the Video sweep signal See Fig E1 Press the FF and EJECT Keys simultaneously for 3 seconds Press the FF and EJECT Keys simultaneously twice Press the EJECT key fo...

Page 21: ...e Frequency response by pressing the 2 increase and or 8 decrease key on the Remote Controller See Fig E2 Store the Adjusted value by pressing the 5 key on the Remote Controller Release the Service mode by pressing the EJECT and FF keys simultaneously in 6 times until the FIP becomes normal indication Fig E5 3 3 7 LOCATION OF TEST POINTS CONTROLS 3 3 8 CIRCUIT BOARD LAYOUT 21 ...

Page 22: ...BLE VOLTAGE CHART 6 1 WAVEFORM TABLE 6 2 VOLTAGE CHART 7 BLOCK DIAGRAMS 7 1 SYSTEM CONTROL SERVO BLOCK DIAGRAM 7 2 LUMINANCE CHROMINANCE BLOCK DIAGRAM 8 SCHEMATIC DIAGRAMS 8 1 POWER TRANSFORMER SECTION IN MAIN SCHEMATIC DIAGRAM 8 2 POWER SUPPLY RF SECTION IN MAIN SCHEMATIC DIAGRAM 8 3 TIMER SECTION IN MAIN SCHEMATIC DIAGRAM 8 4 SYSTEM CONTROL SERVO SECTION IN MAIN SCHEMATIC 22 ...

Page 23: ...TION IN MAIN SCHEMATIC DIAGRAM 8 7 TV DEMODULATOR PACK SCHEMATIC DIAGRAM 8 8 CYLINDER STATOR UNIT SCHEMATIC DIAGRAM 8 9 CAPSTAN UNIT SCHEMATIC DIAGRAM 9 CIRCUIT BOARD ASSEMBLIES 9 1 MAIN C B A 9 2 CYLINDER STATOR UNIT 9 3 TV DEMODULATOR PACK C B A 10 EXPLODED VIEWS 10 1 CHASSIS PARTS SECTION 23 ...

Page 24: ...10 2 CASING PARTS SECTION 24 ...

Page 25: ...10 3 PACKING PARTS SECTION 25 ...

Page 26: ...11 REPLACEMENT PARTS LIST 26 ...

Page 27: ...IT 25 VMD2619 MOTOR BRACKET 26 VMB3045 CONVERSION GEAR SPRING 27 VMD2620 OPENER PIECE 28 VMD2738 LED PRISM 29 VML3165 DRIVE RACK ARM 30 VML3166 MAIN LEVER 31 VML3167 DRIVE MAIN LEVER ARM 32 VML3172 SUPPLY SPRING ARM 33 VML3176 CONVERSION LEVER A 34 VML3177 CONVERSION LEVER B 35 VXA6040 INCLINED BASE S UNIT 36 VXA5854 INCLINED BASE T UNIT 37 VXP1891 ROLLER POST 38 VXP1891 ROLLER POST 39 VMA9672 SUP...

Page 28: ...843 SCREW B5 VHD0843 SCREW B6 VHD0844 SCREW B7 VHD0844 SCREW B8 VHD1066 SCREW B9 VHD1066 SCREW B10 VHD1044 SCREW B11 VHD1060 SCREW B12 VHD1071 SCREW B13 XTS26 6F SCREW B14 XTN26 6F SCREW B15 XTN26 7J SCREW B16 XTN26 7J SCREW B17 XTN26 7J SCREW B18 VHD1095 SCREW B19 VHD1185 SCREW N1 VHN0311 PUSH NUT W1 VMX2208 WASHER W2 VMX3022 WASHER W3 VMX3022 WASHER 11 2 CASING PARTS SECTION PARTS LIST 28 ...

Page 29: ...V 116 VMZ3099 VO SHEET SUPPLIED FROM MBV 117 VJH1175 AV JACK PLATE SUPPLIED FROM MBV 118 VJH1174 ANT JACK PLATE SUPPLIED FROM MBV 119 VMC1715 CYLINDER SHIELD PLATE SUPPLIED FROM MBV 120 VWJ1483 FLAT CARD CABLE 6P SUPPLIED FROM MBV P4003 A C HEAD 121 VWJ1282 FLAT CARD CABLE 9P SUPPLIED FROM MBV P2502 P2901 B101 XTW3 10TFC SCREW B102 XTW3 10TFC SCREW B103 XTW3 10TFC SCREW B104 XTW3 10TFC SCREW B105 ...

Page 30: ...PERATING INSTRUCTIONS ENGLISH SUPPLIED FROM MBV NV SJ420EGNS EGYS 201 VQT9043 OPERATING INSTRUCTIONS DANISH SUPPLIED FROM MBV NV SJ420EGNS 201 VQT9049 OPERATING INSTRUCTIONS ENGLISH SUPPLIED FROM MBV NV SJ420B S 202 N2QAKB000003 REMOTE CONTROLLER SUPPLIED FROM MBV 203 R0186 720010 BATTERY COVER SUPPLIED FROM MBV 205 VJA1089 DIN RF CABLE K1TWACC00001 206 VJA1023 AC CORD SUPPLIED FROM MBV NV SJ420EG...

Page 31: ...TAN UNIT VEK9069 VEP06D85P MAIN C B A SUPPLIED FROM MBV RTL VEP06D85N MAIN C B A SUPPLIED FROM MBV RTL VEP06E00J MAIN C B A SUPPLIED FROM MBV RTL C0701 ECUM1C105ZFN C CAPACITOR CH 16V 1U C0702 ECUX1H102KBV C CAPACITOR CH 50V 1000P C0703 ECUM1A105KBN C CAPACITOR CH 10V 1U C0704 ECUM1E333KBN C CAPACITOR CH 25V 0 033U C0705 ECUX1H150JCV C CAPACITOR CH 50V 15P NV SJ420EG S EGNS EGMS EGYS C0706 ECEA1HK...

Page 32: ...R 1KV 82P SUPPLIED FROM MBV C1109 ECKD2H103PU C CAPACITOR 500V 0 01U C1110 ECA1AHJ331 E CAPACITOR 10V 330U SUPPLIED FROM MBV C1111 ECKF1H102KB C CAPACITOR 50V 1000P C1112 ECQB1H822JF P CAPACITOR 50V 8200P C1114 ECA1HHJ470 E CAPACITOR 50V 47U SUPPLIED FROM MBV C1118 ECQU2A683MVA P CAPACITOR 100V 0 068U C1120 ECEC2GG330 E CAPACITOR 400V 33U C1122 ECKF1H121KB C CAPACITOR 50V 120P C1131 EEUFG1E821 E C...

Page 33: ...CITOR CH 16V 0 1U C3013 ECUX1H103ZFV C CAPACITOR CH 50V 0 01U C3015 ECUX1H103ZFV C CAPACITOR CH 50V 0 01U C3016 ECUX1H103ZFV C CAPACITOR CH 50V 0 01U C3017 VCEA0JCB221 E CAPACITOR 6 3V 220U C3018 ECUX1C104ZFV C CAPACITOR CH 16V 0 1U C3019 ECUX1C104ZFV C CAPACITOR CH 16V 0 1U C3020 VCEA1HCB010 E CAPACITOR 50V 1U C3021 ECUX1H103KBV C CAPACITOR CH 50V 0 01U C3022 ECUX1C104ZFV C CAPACITOR CH 16V 0 1U ...

Page 34: ...5V 4 7U C4009 ECUM1C105ZFN C CAPACITOR CH 16V 1U C4010 ECUX1E273KBV C CAPACITOR CH 25V 0 027U C4011 ECUX1H153KBV C CAPACITOR CH 50V 0 015U C4013 ECUX1H153KBV C CAPACITOR CH 50V 0 015U C4014 VCEA1HCB010 E CAPACITOR 50V 1U C4015 VCEA0JCB470 E CAPACITOR 6 3V 47U C4016 ECUX1C104KBV C CAPACITOR CH 16V 0 1U C4017 VCEA1ACB220 E CAPACITOR 10V 22U C4018 ECUX1C104KBV C CAPACITOR CH 16V 0 1U C4019 ECUX1C104Z...

Page 35: ... VCEA0JCB470 E CAPACITOR 6 3V 47U C6002 ECUX1H151JCV C CAPACITOR CH 50V 150P C6003 ECUX1H471JCV C CAPACITOR CH 50V 470P C6004 ECUX1H103ZFV C CAPACITOR CH 50V 0 01U C6005 ECUX1H103ZFV C CAPACITOR CH 50V 0 01U C6008 ECUX1H102KBV C CAPACITOR CH 50V 1000P C6009 ECUX1H180JCV C CAPACITOR CH 50V 18P C6010 ECUX1H180JCV C CAPACITOR CH 50V 18P C6011 ECUX1H180JCV C CAPACITOR CH 50V 18P C6012 ECUX1H150JCV C C...

Page 36: ...6V 0 1U C7708 ECUX1H221JCV C CAPACITOR CH 50V 220P C7709 ECUX1H221JCV C CAPACITOR CH 50V 220P C7711 ECUX1H221JCV C CAPACITOR CH 50V 220P C7712 ECUM1C105ZFN C CAPACITOR CH 16V 1U C7713 VCEA0JCB470 E CAPACITOR 6 3V 47U D0702 ERJ6GEY0R00 M RESISTOR CH 1 10W 0 D1002 1SS254 DIODE B0AAED000003 D1003 MA4051N H DIODE SUPPLIED FROM MBV D1006 MA4051N M DIODE D1007 1SS254 DIODE B0AAED000003 D1008 MA4130N L D...

Page 37: ...ROTECTOR IP1101 VSF0015A10 FUSE JK4902 K1FB121B0003 SOCKET SUPPLIED FROM MBV JK4903 K1FB121B0003 SOCKET SUPPLIED FROM MBV JK4904 K2HA204B0070 PIN JACK 2 PIN SUPPLIED FROM MBV K0703 ERJ3GEY0R00 M RESISTOR CH 1 16W 0 K0707 ERJ3GEY0R00 M RESISTOR CH 1 16W 0 K0708 ERJ3GEY0R00 M RESISTOR CH 1 16W 0 NV SJ420EG S EGNS EGMS EGYS K0709 ERJ3GEY0R00 M RESISTOR CH 1 16W 0 K3003 ERJ6GMZ0R00 M RESISTOR CH 1 10W...

Page 38: ...901 VLQ0599JR22 COIL 0 22UH L4902 VLQ0599J680 COIL 68UH L4903 VLQ0599J680 COIL 68UH L6001 VLQ0599J101 COIL 100UH L6003 VLQ0599J221 COIL 220UH L7601 VLQ0599J330 COIL 33UH L7602 VLQ0599J330 COIL 33UH L7603 VLQ0599J330 COIL 33UH L7604 VLQ0599J330 COIL 33UH L7609 VLQ0599J100 COIL 10UH L7701 VLQ0599J680 COIL 68UH L7703 VLQ0599J680 COIL 68UH LB1105 VLP0056 FERRITE BEAD LB3501 VLP0147 COIL LB3502 VLP0147...

Page 39: ...D601A TRANSISTOR Q7704 2SD601A TRANSISTOR Q7705 2SD601A TRANSISTOR QR1001 UN2112 TRANSISTOR QR1002 UN2211 TRANSISTOR NV SJ420EG S EGNS EGMS EGYS QR1201 UN2212 TRANSISTOR RESISTOR QR4001 UN2212 TRANSISTOR RESISTOR QR4002 UN2211 TRANSISTOR QR4003 UN2111 TRANSISTOR QR4004 UN2215 TRANSISTOR RESISTOR QR4005 UN2113 TRANSISTOR RESISTOR QR4006 UN2212 TRANSISTOR RESISTOR QR4008 UN2215 TRANSISTOR RESISTOR Q...

Page 40: ...004 ERJ6GMYJ563 M RESISTOR CH 1 10W 56K R1005 ERJ6GMYJ563 M RESISTOR CH 1 10W 56K R1006 ERJ6GMYJ103 M RESISTOR CH 1 10W 10K R1007 ERJ6GMYJ103 M RESISTOR CH 1 10W 10K R1008 ERJ6GEYJ223 M RESISTOR CH 1 10W 22K R1009 ERJ6GEYJ223 M RESISTOR CH 1 10W 22K R1011 ERJ6GMYJ562 M RESISTOR CH 1 10W 5 6K R1012 ERDS2TJ182 C RESISTOR 1 4W 1 8K R1017 ERDS2TJ272 C RESISTOR 1 4W 2 7K R1023 ERDS2TJ822 C RESISTOR 1 4...

Page 41: ...SISTOR CH 1 10W 1K R2513 ERDS1TJ1R5 C RESISTOR 1 2W 1 5 R2514 ERDS1TJ1R2 C RESISTOR 1 2W 1 2 R2515 ERDS2TJ330 C RESISTOR 1 4W 33 R3002 ERJ6GMYJ183 M RESISTOR CH 1 10W 18K R3006 ERJ6GMYJ271 M RESISTOR CH 1 10W 270 R3007 ERJ6GMYG331 M RESISTOR CH 1 10W 330 R3012 ERJ6GMYJ472 M RESISTOR CH 1 10W 4 7K R3015 ERJ6GMYJ101 M RESISTOR CH 1 10W 100 R3016 ERJ6GMYJ101 M RESISTOR CH 1 10W 100 R3017 ERJ6GMYJ122 ...

Page 42: ... 7K R4027 ERJ6GMYJ332 M RESISTOR CH 1 10W 3 3K R4028 ERJ6GMYJ272 M RESISTOR CH 1 10W 2 7K R4029 ERJ6GMYJ332 M RESISTOR CH 1 10W 3 3K R4030 ERJ6GMYJ103 M RESISTOR CH 1 10W 10K R4527 ERJ6GMYJ473 M RESISTOR CH 1 10W 47K R4902 ERDS2TJ471 C RESISTOR 1 4W 470 R4903 ERJ6GMYJ472 M RESISTOR CH 1 10W 4 7K R4904 ERJ6GMYJ153 M RESISTOR CH 1 10W 15K R4905 ERJ6GMYJ223 M RESISTOR CH 1 10W 22K R4906 ERJ6GMYJ562 M...

Page 43: ... 1 10W 43K R6026 ERJ6GMYJ393 M RESISTOR CH 1 10W 39K R6029 ERJ6GMYJ472 M RESISTOR CH 1 10W 4 7K R6030 ERJ6GMYJ472 M RESISTOR CH 1 10W 4 7K R6031 ERJ6GMYJ682 M RESISTOR CH 1 10W 6 8K R6032 ERJ6GMYJ102 M RESISTOR CH 1 10W 1K R6033 ERJ6GMYJ822 M RESISTOR CH 1 10W 8 2K R7501 ERJ6GMYJ822 M RESISTOR CH 1 10W 8 2K R7502 ERJ6GMYJ562 M RESISTOR CH 1 10W 5 6K R7503 ERJ6GMYJ432 M RESISTOR CH 1 10W 4 3K R7504...

Page 44: ...1 10W 4 7K R7713 ERJ6GMYJ472 M RESISTOR CH 1 10W 4 7K R7714 ERJ6GMYJ472 M RESISTOR CH 1 10W 4 7K R7715 ERJ6GMYJ221 M RESISTOR CH 1 10W 220 R7716 ERJ6GMYJ472 M RESISTOR CH 1 10W 4 7K R7717 ERJ6GMYJ473 M RESISTOR CH 1 10W 47K R7718 ERJ6GMYJ273 M RESISTOR CH 1 10W 27K R7719 ERJ6GMYK225 M RESISTOR CH 1 10W 2 2M R7720 ERJ6GMYJ224 M RESISTOR CH 1 10W 220K R7721 ERJ6GMYJ104 M RESISTOR CH 1 10W 100K R7722...

Page 45: ...M MBV NV SJ420EG S EGNS EGMS EGYS VR0701 EVNCBAA00B14 V RESISTOR X0701 VLF1417 FILTER NV SJ420B S J0B4155A0003 X0701 VLF1416 FILTER NV SJ420EG S EGNS EGMS EGYS J0B4045A0002 X0704 VLF1495 FILTER NV SJ420B S X0704 VLF1493 FILTER NV SJ420EG S EGNS EGMS EGYS X3001 VSX0162 CRYSTAL OSCILLATOR X6001 VSX0660 CRYSTAL OSCILLATOR X6002 H0D200500014 CRYSTAL OSCILLATOR SUPPLIED FROM MBV MISCELLANEOUS TP00351 5...

Page 46: ...HALL IC MAIN COIL 2 MAIN COIL 3 MAIN COIL 1 TO SYSTEM CONTROL SERVO SECTION P2502 B 21 NOTE DO NOT USE ANY PART NUMBER SHOWN ON THIS SCHEMATIC DIAGRAM FOR ORDERING WHEN YOU ORDER A PART PLEASE REFER TO PARTS LIST P2901 A 1 2 3 CYLINDER SERVO SPEED LOOP ...

Page 47: ...907 5600 R4916 5600 R4919 180P C4913 220 LB4906 1000P C4914 A10 A11 A7 A4 A9 A8 A5 A6 A3 A2 AV1 PB ON 2SD601A Q4901 22K R4909 470K R4910 15K R4945 22K R4946 470 R4902 MA165 D4904 0 1 C4945 50V1 C4943 B4 B3 B1 B12 B11 0 LB4908 2200P C4946 TUNER AUDIO V OSD IIC CLOCK S OSD IIC DATA S V B5 VIDEO IN AUDIO OUT B4 V B3 AUDIO IN V 0 1 C4936 0 1 C4939 0 L4904 0 1 C4941 0 1 C4928 100 R4921 50V1 C4924 0 1 C...

Page 48: ...132 25V820 C1131 50V47 C1137 220P C1139 220P C1142 ERA22 04 D1123 100 R1125 2700 R1101 50V100 C1140 10V330 C1143 VSF0015A10T IP1101 10V1200 C1134 10V330 C1135 0 01 C1138 100u L1124 22u L1122 0 01 C1141 1 2 11EQS06 D1125 HOT FROM THE SECONDARY CIRCUIT THE STRIPED FRAME INDICATES THE PRIMARY CIRCUIT TO DISTINGUISH THE PRIMARY CAUTION THE PRODUCTS PAY ATTENTION NOT TO RECEIVE AN ELECTRIC SHOCK DURING...

Page 49: ...T TO POWER TRANSFORMER SECTION HEATER P P HEATER T PS HEATER S FIP S SLEEP T FIP 29V P UNREG 29V S CYL 14V P CAP 14V P UNREG 36V P UNREG 16V P GND S GND V GND I GND T GND I GND A S GND FG S GND MOTOR S GND CYL P UNREG 5 6V POWER OFF S S S I V VIDEO 5V S REG 5V I PS 12V I PS 5V V BIAS 5V N SW 5V T I AUDIO MAIN SIGNAL PATH IN PLAYBACK MODE AUDIO MAIN SIGNAL PATH IN REC MODE VIDEO MAIN SIGNAL PATH IN...

Page 50: ...20u L6003 0 1 C6019 1K R6032 UN2212 QR6007 UN2211 QR6002 A25 UN2215 QR6001 18K R6003 1K R6018 1000P C6014 B11 B10 B8 B7 B6 B5 A7 A5 A4 A3 A2 A1 27K R6023 16V10 C6015 M37970VXGD IC6001 AVPB AV1 PB PROG ON A DEF AUDIO H SW VIDEO H SW ENV SELECT H AMP SW ROTARY SW ART V H N D FM REC V SYNC REC PLAY CAL ABS NORM T PHOTO S PHOTO N S T1 T2 AV1 PB 12V A MUTE AFC S CPB LP SLP TRACKING ENV C EMPH NC F ADJ ...

Page 51: ... 0 033 C7706 SDA5650X IC7701 VDDA VDPD NC VCBS ULEF VCO1 VCO2 NC PD1 TI VSSA VSSD NC SCL SDA CSO VCS NC DAVN EHB 20 19 18 17 16 15 14 13 12 11 1 2 3 4 5 6 7 8 9 10 19 18 17 16 15 14 13 12 35V4 7 C2515 33 R2510 35V4 7 C2516 33 R2511 25V47 C2519 330 R2509 68u L2501 0 047 C2518 C3 0 068 C2520 0 15 C2523 0 15 C2522 0 15 C2521 6V220 C2517 1 2W 1 2 R2514 1 2W 1 5 R2513 M3 ATC P3 P2 HE P1 GND PC DS ET PO...

Page 52: ...PART NUMBER SHOWN ON THIS SCHEMATIC DIAGRAM FOR TO POWER SUPPLY RF SECTION R TO POWER TRANSFORMER SECTION P FIP CS S CLOCK S DATA S S S N SW 5V R 5600 R7502 EVQ11G07K S7501 REC 4300 R7503 EVQ11G07K S7502 CH DOWN 4300 R7506 EVQ11404M S7504 CH UP 6V100 C7504 R7514 30K R7515 30K R7513 30K 12P C7503 FIP 29V R 75 R7509 M35502AFP IC7501 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17 VEE S18 ...

Page 53: ...0725 12P C 3P A B C0715 16V22 C0711 22K R0715 GND IF AGC 4MHz 4 3 2 1 TO TUNER UNIT PP0701 0 22u C 0 18u A B L0701 VLF1495 C VLF1493 A B X0704 0 01 C0710 1 8u C 2 2u A B L0703 5 4 3 2 1 6 7 8 10 0 1 C0712 4700 R0719 0 033 C0704 1 C0714 6V330 C0713 3300 R0708 1 C0701 1 C0703 1000P C0702 39K R0707 4700 R0705 0 D0702 0 022 C0716 0 R0724 12K R0722 0 R0723 220 R0733 2SD601A Q0701 3900 R0734 EVQ5EC083P ...

Page 54: ...GNAL PATH IN REC MODE UN2111 QR4003 GND VIDEO 5V BIAS 5V R R R PAL EP S D A REC S A20 A19 A18 A16 A15 10 9 TO CYLINDER UNIT P3502 8 7 6 5 4 3 1 2 4700 R4026 I TO INPUT OUTPUT SECTION 10K R4030 220P C4032 CTL HEAD 6 CTL HEAD 5 A HEAD W 4 A HEAD R 3 TO A C HEAD P4003 AUDIO ERASE IN 1 GND 2 2SD602A Q4006 3300 R4029 6 4 1 0 15 C4031 2 EQQ7QF026P T4002 3 4700P C4029 TO FULL ERASE HEAD P4002 2 1 FULL ER...

Page 55: ...ANK PILOT BURST CK SWITCH TRANSCEIVER C BUS 2 I MUTE 1 40 AFC REC TIMER F DET FAMI FAMI LPF SUBMIXER DIVIDER 1 4 ROT 1 VCO 1 2 M H PAL IDENT PAL M SLD AGC RF H TRAP HPF L TRAP DET NC LPF MAIN CLP SUB MIXER Y C DEL CLP3 2FSC 1H DL LPF DET PICT NC1 CLP2 MIXER YNR PROC YNR ADJ DEV AGC YNR CLP1 ADJ W DC ADJ REC C GAIN CHR LPF ADJ REC Y Y VCC Y GND C1 VCC SCF VCC SCF GND NC REC D C2 VCC C2 GND RF GND D...

Page 56: ...1 A B 3 2 HALL IC P2901 8 M3 2 9 5 1 M1 VM VM VM M2 VEM0715 HALL IC B 3 P2901 A 3 CYLINDER STATOR UNIT Integrated Circuit Connector ADDRESS INFORMATION ...

Page 57: ...1 A C E B D F 3 5 7 2 4 6 8 VEP06D85N NV SJ420EG EGM EGN VEP06E00J NV FJ420EGY VEP06D85P NV SJ420B C A B A B C HOT ...

Page 58: ...4004 E 8 Q4005 F 8 Q4006 F 7 Q4901 F 3 Q4903 F 3 Q4904 E 4 Q7601 F 8 Q7701 B 4 Q7702 C 4 Q7703 C 4 Q7704 D 4 Q7705 B 4 QR1001 A 3 QR1002 B 2 QR1201 E 3 QR4001 D 7 QR4002 D 7 QR4003 D 6 QR4004 D 8 QR4005 C 7 QR4006 E 7 QR4008 F 7 QR4009 F 7 QR4903 F 3 QR4904 F 3 QR4905 F 3 QR6001 B 3 QR6002 D 4 QR6006 B 2 QR6007 C 5 QR7601 C 8 QR7602 C 8 Transistor ADDRESS INFORMATION Transistor Resistor Connector ...

Page 59: ...SJ420EG EGM EGN EGY VEP07A23P NV SJ420B N 1 A C B D 3 2 4 Q0701 B 3 Q0702 A 3 IC0701 C 2 T0701 B 3 VR0701 D 2 PK0701 A 2 PP0701 B 1 ADDRESS INFORMATION Integrated Circuit Connector Adjustment Transistor TV DEMODULATOR PACK C B A ...

Page 60: ...01 114 PLAY 4 2Vp p 10msec div IC6001 89 REC 5 0Vp p 10msec div IC6001 90 91 REC 5 0Vp p 10msec div IC6001 93 94 FF REW 5 0Vp p 1msec div IC6001 97 98 REC 5 0Vp p 10msec div IC6001 20 PAUSE 5 0Vp p 10msec div IC6001 21 REC 5 0Vp p 10msec div IC6001 24 REC 5 0Vp p 10msec div IC6001 61 REC 2 4Vp p 20µsec div IC3001 20 PLAY 150mVp p 20µsec div IC3001 24 REC PLAY 5 0Vp p 10msec div IC3001 37 REC PLAY ...

Page 61: ... 5 2 0 0 2 4 2 4 F F 1 9 2 1 0 0 0 0 0 0 0 0 0 0 0 4 1 6 0 0 4 9 4 8 0 0 0 0 0 0 5 2 5 2 0 0 2 9 2 4 REW 1 9 2 1 0 0 0 0 0 0 0 0 0 0 0 4 1 6 0 0 4 9 4 8 0 0 0 0 0 0 5 2 5 2 0 0 2 9 2 4 Ref No MODE 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 STOP 0 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 4 9 4 9 4 9 2 4 4 9 4 9 4 9 4 9 4 8 4 8 4 1 4 1 PLAY 0 0 0 4 0 0 0 0 0 3 0 0 0 0 0 0 4 9 4 9 4 9 2 4 4 1 ...

Page 62: ...er High High Low High 11 AV1_8IN I Input terminal for PB H from AV1 High 3 85V 5 0V Midd 1 82V 2 84V Low 0V 0 81V In In In In 12 N S T2 T3 I Mode select terminal NORMAL mode More than 4 0V SERVICE mode 2 5V 4 0V TEST_2 mode 1 0V 2 5V TEST_3 mode 0V 1 0V In In In In 13 S PHOTO I Tape end sensor input terminal Photo sensor input from supply side Black Tape more than 2 6V Lead Tape Less than 2 4V In ...

Page 63: ...or switch between EE and VV Low Low Low Low 38 D REC H O Output terminal for video recording current control Low Low Low Low 39 D A REC H O Control terminal for normal audio recording current Low Low Low Low 40 BIAS L O Bias oscillation Control terminal for Linear audio recording current High Hi Z Hi Z High 41 FM MUTE H O Output terminal for audio mute control High High Low High 42 FULL ERASE H O ...

Page 64: ...he super power save mode Low High Low Low High 73 PB60Hz H O Switching terminal for NTSC FM Audio trap filter in PB VV PB Trick_PB A DUB A DUB PS mode and CTL is 60Hz High Other than above condition Low Low Low Low Low 74 ADUB H O Switching terminal for Bias oscillation noise filter in A DUB mode ADUB ADUB PS Including Assemble syncro AV Insert High Other than above condition Hi Z Hi Z Hi Z Hi Z H...

Page 65: ... Low Low Low 99 MAIN IIC CLK O IIC clock for AV1CHIP FM audio Tuner Decoder and RFC Not fix Low Low Low 100 MAIN IIC DATA I O IIC data for AV1CHIP FM audio Tuner Decoder and RFC Not fix Low Low Low 101 N C Low fix terminal Low Low Low Low 102 N C Low fix terminal Low Low Low Low 103 FG AMP OUT O Output from internal FG Amplifier 104 FG AMP IN I Input for internal FG Amplifier 105 GND A GND 106 GND...

Page 66: ... out AV1 In H H OFF AV3 AV3 Mute Mute Mute AV3 In AV1 In SAT NO L VCR out AV1 In H H OFF SAT SAT Mute Mute Mute SAT AV1 In M H VCR out AV1 In H H OFF SAT SAT Mute Mute Mute SAT AV1 In SAT C L VCR out AV1 In H H OFF SAT SAT Mute Mute Mute SAT AV1 In M H VCR out AV1 In H H OFF SAT SAT Mute Mute Mute SAT AV1 In DECODER L NO TU L AV2 In AV1 In L L OFF TUN TUN AV2 In AV1 In Mute AV2 In AV1 In M H AV2 I...

Page 67: ...FF SAT SAT SAT SAT SAT SAT INSEL VV NO TU VCR out VCR out M H M H OFF TUN PB PB PB PB TUN INSEL C TU VCR out VCR out M H M H OFF TUN PB PB PB PB TUN INSEL AV1 VCR out VCR out M H M H OFF AV1 PB PB PB PB AV1 In INSEL AV2 VCR out VCR out M H M H OFF AV2 PB PB PB PB AV2 In INSEL AV3 VCR out VCR out M H M H OFF AV3 PB PB PB PB AV3 In INSEL SAT NO VCR out VCR out M H M H OFF SAT PB PB PB PB SAT INSEL S...

Page 68: ...CR out AV1 In H L OFF AV2 AV2 AV2 In AV1 In AV2 In AV2 In AV1 In AV2 L VCR out AV1 In H L OFF AV2 AV2 AV2 In AV1 In AV2 In AV2 In AV1 In M H VCR out AV1 In H L OFF AV2 AV2 AV2 In AV1 In AV2 In AV2 In AV1 In AV3 L VCR out AV1 In H L OFF AV3 AV3 AV3 In AV1 In AV3 In AV3 In AV1 In M H VCR out AV1 In H L OFF AV3 AV3 AV3 In AV1 In AV3 In AV3 In AV1 In SAT NO L VCR out AV1 In H L OFF SAT SAT SAT AV1 In ...

Page 69: ...1 In H H OFF AV2 AV2 Mute Mute Mute AV2 In AV1 In AV3 L VCR out AV1 In H H OFF AV3 AV3 Mute Mute Mute AV3 In AV1 In M H VCR out AV1 In H H OFF AV3 AV3 Mute Mute Mute AV3 In AV1 In SAT TU L VCR out AV1 In H H OFF SAT SAT Mute Mute Mute SAT AV1 In M H VCR out AV1 In H H OFF SAT SAT Mute Mute Mute SAT AV1 In DECODER L TUN L AV2 In AV1 In L L OFF TUN TUN AV2 In AV1 In Mute AV2 In AV1 In M H AV2 In AV1...

Page 70: ...ut AV1 In L L ON AV2 AV2 AV2 In AV1 In AV2 In AV2 In AV1 In AV3 L VCR out AV1 In L L OFF AV3 AV3 AV3 In AV1 In AV3 In AV3 In AV1 In M H VCR out AV1 In L L OFF AV3 AV3 AV3 In AV1 In AV3 In AV3 In AV1 In SAT TU L VCR out SAT IN L L OFF SAT SAT SAT SAT SAT SAT SAT M H VCR out SAT IN L L ON AV2 AV2 AV2 In SAT AV2 In AV2 In SAT H TUN L VCR out TUN IN H L OFF TUN TUN TUN TUN TUN TUN TUN M H VCR out TUN ...

Page 71: ...UDIO OUTPUT R AUDIO SELECT H AUDIO L AUDIO R AV CONTROL AV CONTROL AV CONTROL SERIAL CLOCK AV CONTROL MODE AV CONTROL LEVEL METER R AV SW LEVEL METER L B MODE H BURST GATE PULSE BACK UP 5V BAND U BAND VL BILINGUAL MIX L BIL BIL L BIL H BIL M1 L BS CLOCK BS DATA BS LCH IN BS MIX H BS MON H BS MONI H BS RCH IN BS VIDEO BS VIDEO BS1 BS H BS LEVEL BS M H BS VTR H BUS CLK BUS LSN BUS TLK BUZZER CAP EC ...

Page 72: ...H FM AUDIO MUTE H FM OUTPUT L FM OUTPUT R FM PACK OUTPUT L FM PACK OUTPUT R FM BS SELECT L FM BS SELECT R FS CLOCK FULL ERASE HEAD ON H FULL ERASE HEAD ON H FULL E 12V GND A GND TU GND N SW 12V H SYNC H AMP SW H P R H P L H P GND H P OUT L H P OUT R H SW HEAD PHONE L HEAD PHONE R HEAD SW HEATER HEATER HSS HTR HTR I RFE ICL IF IN SELA1 IN SELA2 IN SELA3 INS L R L INS H INSEL A1 INSEL A2 INSERT INSE...

Page 73: ...PE PLAY H NORMAL H NR BIAS NTSC L CONTROL AGC CIRCUIT OUTPUT P OFF H P OFF L P FAIL P OFF H P OFF L PAL H PAL L NTSC H PB ADJ OUT PB OUT PB H PFG PHOTSN B PICT CNT PLAY LED RVS LED PLAY PO PLAY R LED PLY DEW POWER OFF L PREROLL H PWRFAIL R CH H R CH L R ST R S F RCH H REC 12V REC CHROMA REC H REC IN REC OUT L REC START REC VR C REC VR L REC VR R REC Y REC H REC C REC Y REC EE CTL REEL T REEL S REG...

Page 74: ... POSITION PAL STOP 2 POSITION STOP 2 POSITION SAFETY TAB SW STEREO H SUB BIAS SUB SW S VHS CASSETTE L SW 5V DETECT SYNC L SYSCON 5V SYSTEM T PHOTO T RL PLS T BUSCLK T BUSLSN T BUSTLK T END L T PHOTO TAPE END L TAPE END L CAM TEST TPZ TRIC L TRICK L TRK ENV TU AUDIO TU GND TU V IN TU VIDEO TUN NOR IN TUN R TUN AUDIO IN TUNER 12V TUNER L TUNER V IN TUNER L TUNER N TUNER R TUNER 12 TUOFF H TV AUDIO T...

Page 75: ...CTRICAL SHOCK IF THE CUT OFF PLUG IS INSERTED INTO ANY 13 AMP SOCKET If a new plug is to be fitted please observe the wiring code as shown below If in any doubt please consult a qualified electrician IMPORTANT The wires in this mains lead are coloured in accordance with the following code Blue Neutral Brown Live As the colours of the wires in the mains lead of this appliance may not correspond wit...

Page 76: ...G 2 1 3 4 SAFETY TAB 65 SUPPLY PHOTO 13 TAKE UP PHOTO 14 CYLINDER STATOR UNIT MAIN COIL 3 MAIN COIL 1 MAIN COIL 2 IC HALL P2901 5V REG 14V REG VH HE HE GND M3 M1 VM M2 2 4 8 5 3 9 1 6 7 P2501 8 P2501 6 P2501 2 P2501 5 P2501 7 P2501 1 P2501 3 4 P2501 9 CYLINDER MOTOR DRIVE IC2501 6 7 16 1 SCHMIT DRIVE MOTOR 2 AMPLIFIER DIFFERENTIAL CONTROL TORQUE PG FG 9 4 TORQUE ERROR CYLINDER 80 CYL PFG 107 SW MO...

Page 77: ... SYSTEM TO C SYNC MAIN SIGNAL PATH IN REC MODE MAIN SIGNAL PATH IN PLAYBACK MODE SYS IIC DATA CONTROL SYSTEM TO FROM SYS IIC CLOCK CONTROL SYSTEM FROM ART V H N AV3 IN VIDEO FRONT VIDEO QR4903 12V PS Q4903 RED VIDEO IN VIDEO OUT BLANKING GREEN BLUE PB 12V 11 7 8 15 16 19 DECODER EXT AV2 JK4902 20 VIDEO IN VIDEO OUT BLANKING RED GREEN BLUE PB 12V TV AV1 JK4903 20 19 16 15 11 7 8 DEMODULATOR FROM TV...

Page 78: ...TRAP EE 27 24 23 LOCK SIDE AFC EE VV VV SP FAMI VV LP EE EE VV DET ACC VV ALTERNATION NTSC FAMI ADJ REC C FAMI 2 2M 4 43M PB 2 2 1 79M 4 43 3 58M BM B CACC BPF 630KHz VV EE 0HDL 1HDL 2HDL 0HDL FAMI 3 58M 2 2M PB 630K 2 2 1 79M REC 4 43 3 58M BM A ACC LPF EE UP DOWN BURST FAMI VV FAMI VV EE FAMI EE 4 43M 3 58M BPF VV 1 79M NTSC PB PAL PB 2 2M FAMI 3 58M BPF VV FAMI PEAKING 20 DET ENV LIM DOUB LPF S...

Page 79: ...CV PC1 VCC NC VM1 A3 A1 ATC A2 OUT2 RNF OUT1 VM2 RIN FIN CONTROL LOGIC TSD C0201 R0204 C0208 C0209 C0210 A3 A1 A2 DRIVER DRIVER EC AMP TL AMP AMP IC0201 1 A L0201 RCC SET VCC R0201 R0211 C0206 2 3 4 5 B C D VM1 DIFFERENTAL AMP POSITION SIGNAL PROCESS TORQUE DIRECTION HALL POWER TO SYSTEM CONTROL SERVO SECTION P2501 F 21 C0207 D0203 R0210 R0213 R0212 Q0203 Q0202 Q0201 6 7 H H TL0201 CAPSTAN MOTOR D...

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Panasonic NV-SJ420EG, Service Manual

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