Panasonic NV-MV21GC Service Manual
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Panasonic NV-MV21GC Service Manual

Panasonic NV-MV21GC Service Manual

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ORDER NO. MAV0404004C8
Video Cassette Recorder
NV-MV21GN / NV-MV21GC / NV-MV21GCS / NV-MV21GCSX /
NV-MV21EE / NV-MV21GCU / NV-MV21GH
R4-MECHANISM
SPECIFICATIONS
1

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Summary of Contents for Panasonic NV-MV21GC

  • Page 1 ORDER NO. MAV0404004C8 Video Cassette Recorder NV-MV21GN / NV-MV21GC / NV-MV21GCS / NV-MV21GCSX / NV-MV21EE / NV-MV21GCU / NV-MV21GH R4-MECHANISM SPECIFICATIONS...
  • Page 2 2004 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law. 1. INTRODUCTION 1.1. INTRODUCTION This service manual contains technical information which will allow service personnel to understand and service this model. If the circuit is changed or modified, this information will be followed by supplementary service manual to be filed with original service manual.

  • Page 3: About Lead Free Solder (Pbf)

    (Order No. VRD0202010C8) 2. The Model No. is indicated on the Schematic Diagram and Circuit Board Diagrams as follows. Model No. Indication Mark NV-MV21GN NV-MV21GC/GCS/GCSX NV-MV21EE NV-MV21GCU NV-MV21GH 1.2. ABOUT LEAD FREE SOLDER (PbF) Distinction of PbF PCB: PCBs (manufactured) using lead free solder will have a PbF stamp on the PCB.
  • Page 4 When IC6001 are replaced, all above listed data become not available. These data is backed up by using the power source of: *AC Connected: AC Power source *AC Disconnected: Back-up Battery (B7751) & Back-up Capacitor (C7752) [NOTE1] As for your reference, without inserting a tape into a VCR, you can confirm that the NAVI data that is back up with IC6001 as shown in the following steps.
  • Page 5 Mechanism unit by referring to the Disassembly procedure. STEP2.REPLACE THE IC6001 1. Replace the IC6001. (Do not make a short circuit between IC6001- pin37 and other pins/Components.) STEP3.RESET THE IC6001 AT ONCE 1. Connect the AC plug. 2. Connect a jumper wire between TL7510 (RESET) and TL7509 (GND) for a second to reset the Microprocessor IC6001.
  • Page 6 Instructions as shown in the following chart. STEP5.TAPE INTERCHANGEABILITY ADJUSTMENT Refer to the Electrical Adjustment Procedures. 2.2. CAUTION FOR AC MAINS LEAD (NV-MV21GC / GH) 2.3. HOW TO REPLACE THE LITHIUM BATTERY 2.3.1. GENERAL DESCRIPTION There is a RAM in the IC6001, which is backing up the following data by using the power source of B7751 (Back-up Battery) and C7752 (Back-up Capacitor: Back-up time is approximately 30 minutes).
  • Page 7 B1). Fig. B1 NOTE: The lithium battery is a critical component (Manufactured by Panasonic.) It must never be subjected to excessive heat or discharge. It must therefore only be fitted in equipment designed specifically for its use. Replacement batteries must be of the same type and manufacture.
  • Page 8 2.4. SERVICE CAUTION-2 2.4.1. CAUTION FOR AUTO TUNING PROCEDURE Auto Tuning will start by the following procedure. 1. Connect the DIN-RF Cable. 2. Connect the AC Mains Lead. 3. Turn on the VCR. Auto Tuning will start. Auto Tuning search for TV stations from VHS minimum to UHF maximum and memorizes every tuned program position.
  • Page 9 NOTE: 1. If the VCR is turned on with the antenna not connected, all channels are skipped. Therefore, firmly connect the antenna and then turn the VCR off and on again to execute Auto tuning. 2. When Auto Tuning is canceled halfway, Auto Tuning is not execute even if the VCR is turned off and then turned on again, In this case, Auto Tuning has to be restarted by the following procedures.
  • Page 10 2.4.3. REMOVAL OF CASSETTE TAPE When the cassette tape could not be uninstalled from an electrical malfunction, There are 2 ways to remove a cassette tape. 1. Removal by compulsory unloading. A. Press FF and EJECT button simultaneously for more than 3 seconds and set the Service Mode to 7.
  • Page 11 C. Stop unloading just before unloading would be completed as shown in Fig. Fig. S3 D. Then the tape becomes slack as shown in Fig. Fig. S4 E. Rotate the S-Reel by a small minus screwdriver (Fig. S5) to remove the slack tape as shown in Fig.
  • Page 12 Fig. S5 Fig. S6 F. Then unload again to remove the cassette tape as shown in Fig. Fig. S7 3. Removal by manual operations after uninstalling the mechanism,refer to the DISASSEMBLY METHOD of item3.1. A. Disconnect the AC plug, and remove the Top Panel, Front Panel and the Mechanism by referring to the Disassembly Procedures.
  • Page 13 C. Rotate the Main Cam Gear counter-clockwise (Fig. S9) until just before the unloading would be completed as shown in Fig. D. Rotate the Capstan Motor clockwise (Fig. S9) to remove the slack tape as shown in Fig. Fig. S9 E.
  • Page 14 G. Install the Loading Motor and tighten screw (S1) as shown in Fig. 2.4.4. CYLINDER UNIT REPLACEMENT NOTE: Replacing only Upper Cylinder unit of R4 Mechanism cannot be performed, as securing of RT gap is impossible out of factory, please replace the cylinder by whole Cylinder Unit. The Compatibility Adjustment should be performed after replacement ofthe DD Cylinder Unit.
  • Page 15 NOTE: When reassembling, perform the steps in the reverse order, and perform the TAPE INTERCHANGEABILITY ADJUSTMENT certainly after CYLINDER UNIT REPLACEMENT. 2.4.5. ATTENTION FOR REPLACING THE CYLINDER UNIT CAUTION: Handle the Cylinder Flexble Card with care. When it damaged, you should replace it with a new Cylinder Unit.
  • Page 16 4. Hook the Flexible Card to the FPC HOLDER. Fig. S13 NOTE: 1. When removing the FPC HOLDER, push stopper portion of the FPC HOLDER with a small minus screw driver and so on. And then pay attention for not to scratch the Cylinder and not to break the Head Chip.
  • Page 17 (Order No.: VRD0202010C8). 2.6. 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/S-VHS VCP and VCR.
  • Page 18 VFK0923FT (For Service usage) Type of Cassette 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...

  • Page 19: Adjustment Procedures

    VFK0823FSE (For end users) Note: The tape material itself is the same in both types. 3. ADJUSTMENT PROCEDURES 3.1. DISASSEMBLY METHOD 3.1.1. DISASSEMBLY FLOW CHART This flow chart indicates disassembly steps of the cabinet parts and the circuit boards in order to find the necessary items for servicing.

  • Page 20: Removal Of The Top Panel

    3.1.2. DETAIL OF DISASSEMBLY METHOD 1. REMOVAL OF THE TOP PANEL Remove 2 Screws (A) Remove 2 Screws (B) Fig.D2...
  • Page 21 2. REMOVAL OF THE BACK PANEL Remove 2 Screws (C) Remove Screw (D) Unlock 4 Tabs (E) Fig. D3...

  • Page 22: Removal Of The Mechanism Unit

    3. REMOVAL OF THE FRONT PANEL UNIT Unlock 7 Tabs (F) Fig. D4 4. REMOVAL OF THE MECHANISM UNIT Remove Screw (G) Remove 2 Screws (H) Remove Screw (I) Disconnect Cylinder Connector Disconnect A/C Head Connector Disconnect P1531 Fig. D5...
  • Page 23 5. REMOVAL OF THE MAIN C.B.A. Remove 4 Screws (J) Fig. D6 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. Fig. D7...

  • Page 24: Servicing Position

    6. SERVICING POSITION Install the Mechanism Unit on to the MAIN C.B.A.. Then fix a screw (I), and connect two frexible card Connectors (Cylinder connector, AC Head connector) and P1531 as shown in Fig. Fig. D8 3.2. MECHANICAL ADJUSTMENT PROCEDURES Refer to the Service Manual for R4-Mechanism Chassis.
  • Page 25 PG SHIFTER ADJUSTMENT PROCEDURE F.I.P. DISPLAY 1. Turn on the Service Mode 1.Press the FF key and the EJECT key simultaneously for more than 3 seconds. 2. Activate the Service Mode 2 While keep pressing FF key, press the EJECT key in twice.

  • Page 26: Waveform Table

    NG1 in the PG Shifter Automatic Adjustment (The cylinder rotation is unstable during the automatic adjustment.) NG2 in the PG Shifter Automatic Adjustment (The vertical sync signal is lacked while over 5 seconds on the alignment tape.) NG3 in the PG Shifter Automatic Adjustment (The installing position of Heads to the cylinder is our of specification.

  • Page 27: Block Diagrams

    6.2. VOLTAGE CHART 7. BLOCK DIAGRAMS 7.1. POWER BLOCK DIAGRAM 7.2. SYSTEM CONTROL & SERVO BLOCK DIAGRAM 7.3. 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.

  • Page 28: Casing Parts Section

    10.2. CASING PARTS SECTION...

  • Page 29: Packing Parts Section

    10.3. PACKING PARTS SECTION...

  • Page 30: Replacement Parts List

    11. REPLACEMENT PARTS LIST...

  • Page 31: Chassis Parts Section / Parts List

    11.1. CHASSIS PARTS SECTION / PARTS LIST Note: *All parts except parts mentioned [PAVC-SPC] in the Remarks column are supplied from PAVCSG. Parts mentioned [PAVC-SPC] are supplied from PAVC-SPC . Ref. No. Part No. Part Name & Description Remarks VEG1647-DKIT CYLINDER UNIT VEM0750 CAPSTAN UNIT...

  • Page 32: Casing Parts Section / Parts List

    Ref. No. Part No. Part Name & Description Remarks VMD4254 SIDE PLATE (R) VML3706 OPENER LEVER VXA7110 CASSETTE HOLDER UNIT VXL3160 MAIN SHAFT UNIT VHD1044 SCREW XYN3+C4FJ SCREW XTN26+7JFJ SCREW XTN26+7JFJ SCREW XTN26+7JFJ SCREW XTV26+5FFJ SCREW XTV26+5FFJ SCREW XTV26+8FFJ SCREW XTV26+8FFJ SCREW VHD1066...

  • Page 33: Packing Parts Section / Parts List

    Ref. No. Part No. Part Name & Description Remarks VGM1991 TOP PANEL VMP7569 CHASSIS FRAME VMP7575 BACK PANEL RYPV0028 FRONT PANEL (1) U RKFV0008 BLINDER PANEL VMB2521 BLINDER SPRING VGB0554 SUPER DRIVE BADGE VMX3115 MECHA SPACER ( F ) VMX3272 MECHA SPACER ( R ) VMZ3355 BARRIER...

  • Page 34: Electrical Parts List

    Ref. No. Part No. Part Name & Description Remarks RQTV0009 O/I BOOK (ENGLISH/ARABIC) NV-MV21GC- S/GCS-S/GCSXS RQTV0010 O/I BOOK (ENGLISH/RUSSIAN) NV-MV21EE- S/GCU-S RQTV0011 O/I BOOK (ENGLISH/CANTONESE) NV-MV21GH- RQTV0008 O/I BOOK (ENGLISH) NV-MV21GN- N2QAJB000087 REMOTE CONTROL ETR0051-5200 BATTERY COVER VJA1124 RF CABLE...
  • Page 35 Note2: “*1”, “*2”, “*3”, “*4”, “*5”, “*6”, “*7” in the Remarkscolumn shows the models as follows. “*1” : NV-MV21EE-S “*2” : NV-MV21GC-S “*3” : NV-MV21GCS-S “*4” : NV-MV21GCSXS “*5” : NV-MV21GCU-S “*6” : NV-MV21GH-S “*7” : NV-MV21GN-S Ref. No. Part No.
  • Page 36 Ref. No. Part No. Part Name & Description Remarks C1251 ECA1CM470B ELECTROLYTIC CAPACITOR C1260 F2A1A1020056 E-CAP C1261 ECA1AM101B ELECTROLYTIC CAPACITOR C1270 EEUFG1H560B E-CAP C1280 EEUFG1A101B E-CAP C1341 F1H1H103A220 CHIP CAPASITOR C1351 F1H1H103A220 CHIP CAPASITOR C1352 ECEA1AKA470B ELECTROLYTIC CAPACITOR C2001 ECJ1VC1H330J CHIP CAPACITOR C2003 ECJ1VF1A105Z...
  • Page 37 Ref. No. Part No. Part Name & Description Remarks C3025 ECJ1VC1H331J CHIP CAPACITOR C3027 F1H1H103A219 CAPACITOR C3029 F1H1H103A220 CHIP CAPASITOR C3030 F1H1H103A220 CHIP CAPASITOR C3031 ECJ1VB1A224K CHIP CAPACITOR C3032 ECEA0JKA470B ELECTROLYTIC CAPACITOR C3033 ECJ1VB0J105K CHIP CAPACITOR C3034 ECJ1VC1H020C CHIP CAPACITOR C3035 F1H1C104A041 CAPACITOR...
  • Page 38 Ref. No. Part No. Part Name & Description Remarks C5005 ECEA0JKA101B ELECTROLYTIC CAPACITOR C5006 F1H1C104A041 CAPACITOR C6001 ECJ1VC1H220J CHIP CAPACITOR C6002 ECJ1VC1H270J CHIP CAPACITOR C6003 ECJ1VC1H180J CHIP CAPACITOR C6004 ECJ1VC1H180J CHIP CAPACITOR C6005 ECEA1HKA3R3B ELECTROLYTIC CAPACITOR C6006 ECJ1VC1H101J CHIP CAPACITOR C6007 ECJ1VC1H820J CHIP CAP...
  • Page 39 Ref. No. Part No. Part Name & Description Remarks C7709 ECJ1VB1H182K CHIP CAPACITOR *1,*2,*3,*4,*5,*7 C7709 F1H1H152A219 CHIP CAPACITOR C7714 ECJ1VC1H101J CHIP CAPACITOR *1,*2,*3,*4,*5,*6 C7752 ECEA0JKA331Q ELECTROLYTIC CAPACITOR D1110 ERZVA5Z471 D1140 B0KB00000013 BRIDGE DIODE D1151 B0HAGM000006 DIODE D1152 MA2C18500E DIODE D1155 MA2C165001VT DIODE D1157...
  • Page 40 Ref. No. Part No. Part Name & Description Remarks VEE0X50 EARTH WIRE JK3201 K2HA408B0069 I/O JACK K3010 ERJ3GEY0R00V CHIP JUMPER K4501 ERJ3GEY0R00V CHIP JUMPER K4651 ERJ6GEY0R00V CHIP JUMPER K5001 ERJ3GEY0R00V CHIP JUMPER K5002 ERJ3GEY0R00V CHIP JUMPER K6006 F1H1H103A220 CHIP CAPASITOR K6012 ERJ3GEY0R00V CHIP JUMPER...
  • Page 41 Ref. No. Part No. Part Name & Description Remarks Q1150 B1DEDR000003 TRANSISTOR Q1151 2SC3311ASA TRANSISTOR Q1152 2SC3311ASA TRANSISTOR Q1153 B1DEEQ000001 TRANSISTOR Q1200 B3PBA0000078 PHOTO COUPLER Q1341 B1AAGD000006 TRANSISTOR Q1342 2SD0601A0L CHIP TRANSISTOR Q1351 B1AAGD000006 TRANSISTOR Q1354 B1AAGD000006 TRANSISTOR Q1501 PNA2604M01VT PHOTO TRANSISTOR Q1502 PNA2604M01VT...
  • Page 42 Ref. No. Part No. Part Name & Description Remarks R1511 ERJ3GEYJ273V CHIP RESISTOR R1512 ERJ3GEYJ273V CHIP RESISTOR R1513 ERJ6GEYJ121V CHIP RESISTOR R2001 ERJ3GEYJ392V CHIP RESISTOR R2002 ERJ3GEYJ105V CHIP RESISTOR R2099 ERJ3GEYJ682V CHIP RESISTOR R2501 ERJ6GEYJ1R2V CHIP RESISTOR R2503 ERJ6GEYJ1R5V CHIP RESISTOR R2514 ERJ3GEYJ221V CHIP RESISTOR...
  • Page 43 Ref. No. Part No. Part Name & Description Remarks R4075 ERJ3GEYJ471V CHIP RESISTOR R4081 ERJ3GEYJ123V CHIP RESISTOR R4082 ERJ3GEYJ332V CHIP RESISTOR R4084 ERJ3GEYJ102V CHIP RESISTOR R4085 ERJ3GEYJ102V CHIP RESISTOR R4086 ERJ3GEYJ222V CHIP RESISTOR R4087 ERJ3GEYJ222V CHIP RESISTOR R4088 ERJ6GEY0R00V CHIP JUMPER R4513 ERJ3GEYJ222V CHIP RESISTOR...
  • Page 44 Ref. No. Part No. Part Name & Description Remarks R7514 ERJ3GEYJ182V CHIP RESISTOR R7516 ERJ3GEYJ154V CHIP RESISTOR R7517 ERJ3GEYJ392V CHIP RESISTOR R7518 ERJ3GEYJ512V CHIP RESISTOR R7519 ERJ3GEYJ362V CHIP RESISTOR R7520 ERJ3GEYJ912V CHIP RESISTOR R7521 ERJ3GEYJ154V CHIP RESISTOR R7522 ERJ3GEYJ203V CHIP RESISTOR R7523 ERJ3GEYJ512V CHIP RESISTOR...
  • Page 45 Ref. No. Part No. Part Name & Description Remarks W514 ERJ6GEY0R00V CHIP JUMPER W515 ERJ3GEY0R00V CHIP JUMPER W516 ERJ6GEY0R00V CHIP JUMPER W517 ERJ3GEY0R00V CHIP JUMPER W518 ERJ3GEY0R00V CHIP JUMPER W519 ERJ3GEY0R00V CHIP JUMPER W520 ERJ3GEY0R00V CHIP JUMPER W521 ERJ3GEY0R00V CHIP JUMPER W522 ERJ3GEY0R00V CHIP JUMPER...
  • Page 46 Ref. No. Part No. Part Name & Description Remarks X6002 H0A327200064 CRYSTAL OSCILLATOR ZA1101 EYF52BC FUSE HOLDER ZA1102 EYF52BC FUSE HOLDER VMD4258 PHOTO TRANSISTOR HOLDER VMD4258 PHOTO TRANSISTOR HOLDER RJFV0002 FIP HOLDER 12. Schematic Diagram for printing with A4 size...
  • Page 47 VIDEO MAIN SIGNAL PATH IN REC MODE VIDEO MAIN SIGNAL PATH IN PLAYBACK MODE JK3201 IC6001 IC3001 (AUDIO/VIDEO SIGNAL PROCESSOR) (REAR JACK) TL3002 FIXED TO INT IN THES MODELS BY Q3202 PIN53 VIDEO SIGNAL 2MHz PROCESS SVHS SQUELCH -6dB -4dB TL3003 SVHS VIDEO...
  • Page 48 THE STRIPED FRAME INDICATES THE PRIMARY CIRCUIT TO DISTINGUISH THE PRIMARY CAUTION FROM THE SECONDARY CIRCUIT. PAY ATTENTION NOT TO RECEIVE AN ELECTRIC SHOCK DURING REPAIR AND SERVICE OF THE PRODUCTS. :TO POWER SUPPLY/RF SECTION :TO SYSTEM CONTROL & SERVO SECTION :TO TIMER SECTION :TO LUMINANCE &...
  • Page 49 VIDEO MAIN SIGNAL PATH IN REC MODE AUDIO MAIN SIGNAL PATH IN REC MODE :TO POWER TRANSFORMER SECTION :TO SYSTEM CONTROL & SERVO SECTION VIDEO MAIN SIGNAL PATH IN PLAYBACK MODE AUDIO MAIN SIGNAL PATH IN PLAYBACK MODE TU7601 :TO TIMER SECTION ENG57820G1:A ENG57818G1:B/C/D/E :TO LUMINANCE &...
  • Page 50 P :TO POWER TRANSFORMER SECTION CAPSTAN SERVO SPEED LOOP CAPSTAN SERVO PHASE LOOP CYLINDER SERVO SPEED LOOP CYLINDER SERVO PHASE LOOP :TO POWER SUPPLY/RF SECTION :TO TIMER SECTION :TO LUMINANCE & CHROMINANCE/AUDIO SECTION R6009 R6104 TL6003 C6011 (B/C/D/E) 0.01 (B/C/D/E) R6010 R6105 IC1511...
  • Page 51 VIDEO 5V CYLINDER VG UNREG 16V R2519 8200 C2571 25V220 C2520 D2503 MA4160NM P1531 (TO LOADING MOTOR) LOAD MOTOR (-) LOAD MOTOR (+) IC6301 C2507 C2515 C2505 C2504 C2506 R6401 R6400 C2519 C0DBCHD00002 1000P 0.01 0.022 0.022 0.22 (5V SWITCHING REG.) C6307 0.01 R IN...
  • Page 52 DP7501 A2BA00000215 :TO POWER TRANSFORMER SECTION :TO POWER SUPPLY/RF SECTION :TO SYSTEM CONTROL & SERVO SECTION S-VHS R7528 R7526 HEATER(+) C7504 0.01 HEATER(-) D7501 C7501 R7525 MA4240N 35V10 UNREG -29V R7529 C7506 IC7501 M35502AFP S.DATA S.CLOCK C7502 FIP CS SYSTEM CTL 5V R7506 12K C7505 6V100...
  • Page 53 P :TO POWER TRANSFORMER SECTION VIDEO MAIN SIGNAL PATH IN REC MODE VIDEO MAIN SIGNAL PATH IN PLAYBACK MODE AUDIO MAIN SIGNAL PATH IN REC MODE AUDIO MAIN SIGNAL PATH IN PLAYBACK MODE R :TO POWER SUPPLY/RF SECTION S :TO SYSTEM CONTROL & SERVO SECTION JK3201 K2HA408B0069 (REAR JACK)
  • Page 54 C3041 R3013 C3040 C3038 R3012 C3037 L3004 0.022 0.47 4700P 50V2.2 12µ C3039 C3034 0.033 X3002 X3001 H0D443400039 H0D357400067 C3036 C3035 C3033 C3030 R3011 C3029 L3303 25V3.3 0.01 3300 0.01 33µ (2.7) C3031 C3032 0.22 6V47 L3302 X-TAL CLOCK DOWN 68µ...
  • Page 55 (VEP06F53T:NV-MV21GN)(VEP06F53R:NV-MV21GC/GCS/GCSX)(VEP06F53U:NV-MV21EE)(VEP06F53V:NV-MV21GCU)(VEP06F53W:NV-MV21GH) TL4506 TL4504 TL4505 P1531 TU7601 P2501 TL4503 TL3003 Q4082 QR4061 (C/D) Q3202 (C/D) QR4081 (C/D) P1101 P5001 TL3002 P4002 Q4083 TL4511 IC2502 (C/D) Q4081 TL4507 (B/C/D/E) TW4002 (C/D) IC3001 TW2001 P2571 QR4506 QR4504 P4001 Q3001 IC2501 TW2002 TL2502 TW3001...
  • Page 56 IMPORTANT SAFETY NOTICE: COMPONENTS IDENTIFIED WITH THE MARK HAVE THE SPECIAL CHARACTERISTICS FOR SAFETY. WHEN REPLACING ANY OF THESE COMPONENTS, USE ONLY THE SAME TYPE. THE STRIPED FRAME INDICATES THE PRIMARY CIRCUIT TO DISTINGUISH THE PRIMARY CAUTION FROM THE SECONDARY CIRCUIT. PAY ATTENTION NOT TO RECEIVE AN ELECTRIC SHOCK DURING REPAIR AND SERVICE OF THE PRODUCTS.
  • Page 57 Reset/ No Terminal Name I/O Description P.OFF P.Failure Release Port for scanning line control: PROGRESSIVE TV scanning line 628: H scanning line 624: L 2 CODE1 I AD input terminal for model setting. 3 CODE2 I AD input terminal for model setting. 4 T.S.CUREVE I Input terminal for "S-Curve"...
  • Page 58 Reset/ No Terminal Name I/O Description P.OFF P.Failure Release 22 NC O Low fix. Enforced Normal selection signal and Audio Automatic Adjustment Trigger Input Terminal 23 ABS_NORMAL *To turn audio into normal: Low (During ADUBPS, HiFi Audio envelopedeterioration *Others: High Recording on/off control signal terminal for Linear audio.
  • Page 59 Reset/ No Terminal Name I/O Description P.OFF P.Failure Release 50Hz Playback on SQPB: High output 42 PAL_SQPB Other than above : Low output Clock souce selection terminal at reset starting. 43 32K.START(L) *12/16MHz(High speed) :Connected to VCC (5V). *32KHz(Slow speed) :Connected to Vss (0V). 44 LC.OSC.IN I Input terminal of the LC Oscillation (For OSD dot clock) 45 LC.OSC.OUT...
  • Page 60 Reset/ No Terminal Name I/O Description P.OFF P.Failure Release Terminal for both NAVI Writing and OSD REC Writing. 1. During NAVI writing (During recording in JET NAVIGATOR is ON) At NAVI data "H" being written : High is output At NAVI data "L" being written : Low is output 64 VBI1/CHARA At except NAVI data being written : Low is output Low / Hi-Z...
  • Page 61 Reset/ No Terminal Name I/O Description P.OFF P.Failure Release Distinction terminal for the Video system. 1. In the VV mode. *"High" is input: Playback of a MESECAM recorded tape. *"Low" is input: Playback of other than MESECAM recorder tape. 2. In the EE mode. 89 MESECAM (H) *"High"...
  • Page 62 SYSTEM CONTROL & SERVO ICs DC VOLTAGE CHART (SP MODE) IC1511 IC1512 Ref. No. MODE STOP PLAY IC2501 Ref. No. MODE STOP 12.2 16.2 PLAY 12.3 16.3 12.2 16.3 12.2 16.2 12.3 16.2 3..9 Ref. No. IC2501 MODE STOP 12.2 PLAY 12.3 12.2...
  • Page 63 4.43 NTSC L BILINGUAL 443NT [L] BILINGUAL L A. COMP BIL [L] AUDIO COMPONENT SIGNAL BILINGUAL H BIL. [H] A. COMPO AUDIO COMPONENT SIGNAL BILINGUAL L AUDIO DUBBING PAUSE L BIL/M1 [L] A. D.P [L] AUDIO DUBBING PAUSE L BS CLOCK A.
  • Page 64 CYL GND CYLINDER GND FULL. E. 12V FULL ERASE 12V DELAIED FM RECORDING H D.F.M. REC [H] GND (ANALOG) GND [A] DELAIED FM RECORDING L D. FM REC [L] GND (TUNER) GND [TU] D. GND GND/NON SW 12V DIGITAL GND GND/N.
  • Page 65 POWER OFF H LINE IN [R] LINE INPUT (R) P-OFF [H] POWER OFF L LINE OUT [L] LINE OUTPUT (L) P-OFF [L] LINE OUT [R] LINE OUTPUT (R) P. FAIL POWER FAILURE DETECT LP H POWER OFF H LP [H] P.
  • Page 66 SYSTEM CONTROL 5V RF OUT RF OUTPUT SYSCON 5V SYSTEM SW RF Y RF LUMINANCE SIGNAL SYSTEM TAKE-UP PHOTO TRANSISTOR RF. Y. IN RF LUMINANCE SIGNAL INPUT T-PHOTO TAKE-UP REEL PULSE RF. Y. OUT RF LUMINANCE SIGNAL OUTPUT T-RL. PLS TIMER BUS CLOCK ROTAR.
  • Page 67 If you lose the fuse cover the plug must not be used until a replacement cover is obtained. A replacement fuse cover can be purchased from your local Panasonic Dealer. IF THE FITTED MOULDED PLUG IS UNSUITABLE TYPE B FOR THE SOCKET OUTLET IN YOUR HOME THEN THE FUSE SHOULD BE REMOVED AND THE PLUG CUT OFF AND DISPOSED OF SAFELY.

  • Page 68: Power Transformer Section In Main Schematic Diagram

    8 SCHEMATIC DIAGRAMS 8.1. POWER TRANSFORMER SECTION IN MAIN SCHEMATIC DIAGRAM THE STRIPED FRAME INDICATES THE PRIMARY CIRCUIT TO DISTINGUISH THE PRIMARY CAUTION FROM THE SECONDARY CIRCUIT. PAY ATTENTION NOT TO RECEIVE AN ELECTRIC SHOCK DURING REPAIR AND SERVICE OF THE PRODUCTS.
  • Page 69 :TO POWER SUPPLY/RF SECTION :TO SYSTEM CONTROL & SERVO SECTION :TO TIMER SECTION :TO LUMINANCE & CHROMINANCE/AUDIO SECTION T1150 TL1009 G4D2A0000113 LB1214 0JKB0000028 HEATER (-) C1280 TL1008 10V100 D1280 11EQS04 C1142 400V33 HEATER (+) TL1029 D1270 MA185 UNREG -29V C1270 50V56 D1250 AK09V2...

  • Page 70: Power Supply/ Rf Section In Main Schematic Diagram

    8.2. POWER SUPPLY/ RF SECTION IN MAIN SCHEMATIC DIAGRAM VIDEO MAIN SIGNAL PATH IN REC MODE :TO POWER TRANSFORMER SECTION :TO SYSTEM CONTROL & SERVO SECTION VIDEO MAIN SIGNAL PATH IN PLAYBACK MODE :TO TIMER SECTION :TO LUMINANCE & CHROMINANCE/AUDIO SECTION QR1342 UN2112 (POWER ON:ON)
  • Page 71 AUDIO MAIN SIGNAL PATH IN REC MODE AUDIO MAIN SIGNAL PATH IN PLAYBACK MODE TU7601 ENG57820G1:A ENG57818G1:B/C/D/E L7610 10µ N.SW 5V LB7601 C7623 C7618 C7619 J0JBC0000015 0.01 6V47 0.01 AUDIO OUT C7610 1000P DATA L7605 10µ N.SW 5V C7617 C7616 0.01 6V47 CLOCK...

  • Page 72: Timer Section In Main Schematic Diagram

    8.3. TIMER SECTION IN MAIN SCHEMATIC DIAGRAM DP7501 A2BA00000215 :TO POWER TRANSFORMER SECTION :TO POWER SUPPLY/RF SECTION :TO SYSTEM CONTROL & SERVO SECTION S-VHS R7528 R7526 HEATER(+) C7504 0.01 HEATER(-) D7501 C7501 R7525 MA4240N 35V10 UNREG -29V C7506 IC7501 M35502AFP S.DATA S.CLOCK C7502...
  • Page 73 R7529 TIMER PROG CHECK PLAY POWER S7501 S7519 S7515 EVQ11G09K EVQ11G09K EVQ11G09K R7509 R7503 R7523 R7520 R7527 3900 3600 5100 9100 STOP S7518 S7510 S7512 S7513 EVQ11G09K EVQ11L09B EVQ11G09K EVQ11G09K R7517 R7519 R7518 R7502 R7522 3900 3600 5100 9100 NV-MV21GN/GC/GCS/GCSX/EE/GCU/GH NOT USE ANY PART NUMBER SHOWN ON THIS SCHEMATIC DIAGRAM FOR DERING.WHEN YOU ORDER A PART,PLEASE REFER TO PARTS LIST.

  • Page 74: System Control & Servo Section In Main Schematic Diagram

    8.4. SYSTEM CONTROL & SERVO SECTION IN MAIN SCHEMATIC DIAGRAM P :TO POWER TRANSFORMER SECTION CAPSTAN SERVO SPEED LOOP CAPSTAN SERVO PHASE LOOP :TO POWER SUPPLY/RF SECTION :TO TIMER SECTION :TO LUMINANCE & CHROMINANCE/AUDIO SECTION IC1511 C2003 R6406 R2563 RPI303 (T-REEL SENSOR) R1513 R2001...
  • Page 75 LOOP CYLINDER SERVO SPEED LOOP CYLINDER SERVO PHASE LOOP R6009 R6104 TL6003 (B/C/D/E) C6011 (B/C/D/E) 0.01 R6010 R6105 R6406 R7707 TL6002 C7714 L7702 R2563 R2561 100P 10µ R6028 C6112 C6022 0.01 R7706 C2561 C2562 Q7701 R6012 C6013 0.056 0.056 2SB709A R6029 C6113 (AMP)
  • Page 76 R2519 8200 C2520 D2503 MA4160NM C2507 C2515 C2505 C2504 C2506 R6401 R6400 C2519 1000P 0.01 0.022 0.022 0.22 R IN F IN OUT2 L GND OUT1 CONTROL LOWER STARTING LOGIC SATURATION SOFT CONTROL PREVENT SWITCH LOGIC CIRCUIT RRE-DRIVE DIFFERENTIAL IC2501 C1AB00001479 MOTOR DIFFERENTIAL...
  • Page 77 VIDEO 5V CYLINDER VG UNREG 16V C2571 25V220 P1531 (TO LOADING MOTOR) LOAD MOTOR (-) LOAD MOTOR (+) IC6301 2519 C0DBCHD00002 (5V SWITCHING REG.) C6307 0.01 UNREG 6V C6308 6V47 P2571 (TO CAPSTAN UNIT) UNREG 16V CAP FG1 GND(FG) CURR LIMIT CAP ET 1479 CAP R/F...
  • Page 78 8.5. LUMINANCE & CHROMINANCE/ AUDIO SECTION IN MAIN SCHEMATIC DIAGRA VIDEO MAIN SIGNAL PATH IN REC MODE VIDEO MAIN SIGNAL PATH IN P :TO POWER TRANSFORMER SECTION R :TO POWER SUPPLY/RF SECTION S :TO SYSTEM CONTROL & SERVO SECTION JK3201 K2HA408B0069 (REAR JACK) AUDIO...
  • Page 79 C DIAGRAM MAIN SIGNAL PATH IN PLAYBACK MODE AUDIO MAIN SIGNAL PATH IN REC MODE AUDIO MAIN SIGNAL PATH IN PLAYBACK MODE QR4504 (B/C/D/E) UN2115 AUDIO VIDEO (BUFFER) QR4506 TW3001 R3018 R4018 C3042 UN2215 25V4.7 -0.4 (MUTE) (B/C/D/E) C3046 50V1 INVERT TL4503 TL3002...
  • Page 80 C3041 R3013 C3040 C3038 R3012 C3037 0.022 0.47 4700P 50V2.2 C3039 0.033 X3002 X3001 H0D443400039 H0D357400067 C3036 C3035 C3033 C3030 R3011 C3029 25V3.3 0.01 3300 0.01 (2.7) X-TAL CLOCK DOWN VCO/OSC DRIVER LCVCO CONV 2FSC Y-CCD CHROMA KILLER DISCRI CONT ACC DET MODE CONTROL...
  • Page 81 L3004 12µ C3034 L3303 33µ C3031 C3032 0.22 6V47 L3302 68µ C3027 C3028 0.01 6V47 Y-CCD C3052 QR3003 2SD601A C-CCD (AMP) C3025 R3024 330P R*L-SECAM R3033 3.3M R3032 6.8M C3022 C3021 0.01 16V10 C3020 25V3.3 R3042 C3019 KILLER C3053 QR3001 UN2213 (INV.) C3059...
  • Page 84 T1150-4 STOP T1150-6 STOP T1150-11 STOP T1150-2 STOP T1150-12 STOP 33Vp-p (5usec.div.) 3.8Vp-p (2msec.div.) 560Vp-p (5usec.div.) 100Vp-p (5usec.div.) 18Vp-p (5usec.div.) T1150-13 STOP T1150-16 STOP Q1200-1 STOP IC2501-22,23,25 PLAY IC6001-13 STILL 40Vp-p (5usec.div.) 76Vp-p (5usec.div.) 0.4Vp-p (5usec.div.) 7.0Vp-p (2msec.div.) 5.0Vp-p (5msec.div.) IC6001-18 REC IC6001-50 REC/PLAY IC6001-52 REC/PLAY...
  • Page 85 POWER TRANSFORMER T1150 TL1009 TO LUMINANCE HEATER (-) HEATER (-) UNREG 6V & CHROMINANCE D1140, TL1008 C1142, P1101 L1121 L1120 C1143 Q1351 TO LUMINANCE HEATER (+) HEATER (+) TO TIMER 5V.REG. VIDEO 5V & CHROMINANCE/ SYSTEM CONTROL TL1029 D1110 SURGE LINE LINE RECTIFIER...
  • Page 86 IC0201 IC6001 IC7501 (CAPSTAN MOTOR DRIVE) (SYSTEM CONTROL & SERVO) (FIP DRIVE) UNREG DP7501 P0201 P2571 CAPSTAN TL2502 MOTOR COILS 32KHz IN 35 (TIMER DISPLAY) MOTOR DIFFERENTIAL TORQUE P0201 P2571 CURRENT LIMIT X6002 DRIVE AMPLIFIRE CONTROL 32KHz OUT 36 8 10 12 13 15 16 18 19 21 22 24 P0201 P2571 CAP ET...

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