JVC HR-J271MS Manuals
Manuals and User Guides for JVC HR-J271MS. We have 3 JVC HR-J271MS manuals available for free PDF download: Service Manual, Instructions Manual
JVC HR-J271MS Service Manual (136 pages)
VIDEO CASSETTE RECORDER
Brand: JVC | Category: Cassette Player | Size: 18.71 MB
Table of contents
Table Of Contents2................................................................................................................................................................
Important Safety Precautions3................................................................................................................................................................
Disassembly5................................................................................................................................................................
Disassembly Flow Chart5................................................................................................................................................................
How To Read The Disassembly And Assembly5................................................................................................................................................................
Disassembly/assembly Method5................................................................................................................................................................
Service Position8................................................................................................................................................................
How To Take Out The Mechanism And Main Board Assemblies8................................................................................................................................................................
Mechanism Service Mode9................................................................................................................................................................
How To Set The "mechanism Service Mode9................................................................................................................................................................
Emergency Display Function10................................................................................................................................................................
Displaying The Emergency Information10................................................................................................................................................................
Clearing The Emergency History10................................................................................................................................................................
Emergency Content Description11................................................................................................................................................................
Emergency Detail Information 112................................................................................................................................................................
Emergency Detail Information 213................................................................................................................................................................
Syscon Circuit14................................................................................................................................................................
Syscon Cpu Pin Function (ic3001) [hr-j677ms, Hr-j777ms]14................................................................................................................................................................
Mechanism Adjustment16................................................................................................................................................................
Before Starting Repair And Adjustment16................................................................................................................................................................
Precautions16................................................................................................................................................................
Checking For Proper Mechanical Operations16................................................................................................................................................................
Manually Removing The Cassette Tape16................................................................................................................................................................
Jigs And Tools Required For Adjustment17................................................................................................................................................................
Maintenance And Inspection18................................................................................................................................................................
Replacement Of Major Parts21................................................................................................................................................................
Before Starting Disassembling (phase Matching Between Mechanical Parts)21................................................................................................................................................................
How To Set The Mechanism Assembling Mode21................................................................................................................................................................
Cassette Holder Assembly21................................................................................................................................................................
Pinch Roller Arm Assembly23................................................................................................................................................................
Guide Arm Assembly And Press Lever Assembly23................................................................................................................................................................
Audio Control Head23................................................................................................................................................................
Loading Motor23................................................................................................................................................................
Capstan Motor24................................................................................................................................................................
Pole Base Assembly (supply Or Take-up Side)24................................................................................................................................................................
Rotary Encoder25................................................................................................................................................................
Clutch Unit25................................................................................................................................................................
Change Lever Assembly, Direct Gear, Clutch Gear And Coupling Gear25................................................................................................................................................................
Link Lever26................................................................................................................................................................
Cassette Gear, Control Cam And Worm Gear26................................................................................................................................................................
Control Plate26................................................................................................................................................................
Loading Arm Gear (supply Or Take-up Side) And Loading Arm Gear Shaft27................................................................................................................................................................
Take-up Lever, Take-up Head And Control Plate Guide28................................................................................................................................................................
Capstan Brake Assembly28................................................................................................................................................................
Sub Brake Assembly (take-up Side)28................................................................................................................................................................
Main Brake Assembly (take-up Side), Reel Disk (take-up Side) And Main Brake Assembly (supply Side)28................................................................................................................................................................
Tension Brake Assembly, Reel Disk (supply Side) And Tension Arm Assembly29................................................................................................................................................................
Idler Lever, Idler Arm Assembly29................................................................................................................................................................
Stator Assembly29................................................................................................................................................................
Rotor Assembly29................................................................................................................................................................
Upper Drum Assembly30................................................................................................................................................................
Compatibility Adjustment31................................................................................................................................................................
Checking/adjustment Of Fm Waveform Linearity31................................................................................................................................................................
Checking/adjustment Of The Height And Tilt Of The Audio Control Head32................................................................................................................................................................
Checking/adjustment Of The Audio Control Head Phase (x-value)32................................................................................................................................................................
Checking/adjustment Of The Standard Tracking Preset33................................................................................................................................................................
Checking/adjustment Of The Tension Pole Position33................................................................................................................................................................
Electrical Adjustment35................................................................................................................................................................
Precaution35................................................................................................................................................................
Required Test Equipments35................................................................................................................................................................
Required Adjustment Tools35................................................................................................................................................................
Color (colour) Bar Signal,color (colour) Bar Pattern35................................................................................................................................................................
Switch Settings And Standard Precautions35................................................................................................................................................................
Servo Circuit36................................................................................................................................................................
Switching Point36................................................................................................................................................................
Slow Tracking Preset36................................................................................................................................................................
Video Circuit36................................................................................................................................................................
Auto Picture Initial Setting36................................................................................................................................................................
Safety First39................................................................................................................................................................
Safety Precautions39................................................................................................................................................................
Installing Your New Recorder40................................................................................................................................................................
Basic Connections40................................................................................................................................................................
Initial Settings41................................................................................................................................................................
Video Channel Set41................................................................................................................................................................
Auto Set Up43................................................................................................................................................................
On-screen Displays45................................................................................................................................................................
Select Language46................................................................................................................................................................
Clock Set47................................................................................................................................................................
Playback Basic Playback48................................................................................................................................................................
Playback Features49................................................................................................................................................................
Slow Motion49................................................................................................................................................................
Manual Tracking50................................................................................................................................................................
Repeat Playback50................................................................................................................................................................
Index Search51................................................................................................................................................................
Skip Search51................................................................................................................................................................
Recording54................................................................................................................................................................
Recording Features55................................................................................................................................................................
Picture System57................................................................................................................................................................
Timer Recording59................................................................................................................................................................
System Setup (hr-j777ms Only)59................................................................................................................................................................
Timer Programming (hr-j777ms Only)61................................................................................................................................................................
Express Timer Programming63................................................................................................................................................................
Colour System63................................................................................................................................................................
Special Features69................................................................................................................................................................
Remote Control Functions69................................................................................................................................................................
Editing73................................................................................................................................................................
Edit To Or From Another Video Recorder73................................................................................................................................................................
Edit From A Camcorder74................................................................................................................................................................
Information On Multi-system Compatibility75................................................................................................................................................................
Tuner Set77................................................................................................................................................................
Troubleshooting81................................................................................................................................................................
Questions And Answers84................................................................................................................................................................
Index85................................................................................................................................................................
Front View85................................................................................................................................................................
Rear View85................................................................................................................................................................
Display Panel86................................................................................................................................................................
Remote Control87................................................................................................................................................................
Specifications88................................................................................................................................................................
Electrical Parts List95................................................................................................................................................................
Main Board Assembly(hr-j677ms/j777ms)<03>100................................................................................................................................................................
Audio Control Head Board Assembly <12>105................................................................................................................................................................
Mini Front Board Asseembly(hr-j271ms/j471ms)<28>106................................................................................................................................................................
Notes Of Schematic Diagram107................................................................................................................................................................
Circuit Board Notes108................................................................................................................................................................
Board Interconnections109................................................................................................................................................................
Demodulator Schematic Diagram [hr-j777ms]124................................................................................................................................................................
Demodulator Circuit Board [hr-j777ms]130................................................................................................................................................................
Remote Control Schematic Diagram131................................................................................................................................................................
Voltage Charts [hr-j677ms, Hr-j777ms]132................................................................................................................................................................
System Control Block Diagram133................................................................................................................................................................
Video Block Diagram134................................................................................................................................................................
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JVC HR-J271MS Service Manual (84 pages)
Table of contents
Table Of Contents2................................................................................................................................................................
Important Safety Precautions3................................................................................................................................................................
Disassembly5................................................................................................................................................................
Disassembly Flow Chart5................................................................................................................................................................
How To Read The Disassembly And Assembly5................................................................................................................................................................
Disassembly/assembly Method5................................................................................................................................................................
Service Position8................................................................................................................................................................
How To Take Out The Mechanism And Main Board Assemblies8................................................................................................................................................................
Mechanism Service Mode9................................................................................................................................................................
How To Set The "mechanism Service Mode9................................................................................................................................................................
Emergency Display Function10................................................................................................................................................................
Displaying The Emergency Information10................................................................................................................................................................
Clearing The Emergency History10................................................................................................................................................................
Emergency Content Description11................................................................................................................................................................
Emergency Detail Information 112................................................................................................................................................................
Emergency Detail Information 213................................................................................................................................................................
Syscon Circuit14................................................................................................................................................................
Syscon Cpu Pin Function (ic3001) [hr-j677ms, Hr-j777ms]14................................................................................................................................................................
Mechanism Adjustment16................................................................................................................................................................
Before Starting Repair And Adjustment16................................................................................................................................................................
Precautions16................................................................................................................................................................
Checking For Proper Mechanical Operations16................................................................................................................................................................
Manually Removing The Cassette Tape16................................................................................................................................................................
Jigs And Tools Required For Adjustment17................................................................................................................................................................
Maintenance And Inspection18................................................................................................................................................................
Replacement Of Major Parts21................................................................................................................................................................
Before Starting Disassembling (phase Matching Between Mechanical Parts)21................................................................................................................................................................
How To Set The Mechanism Assembling Mode21................................................................................................................................................................
Cassette Holder Assembly21................................................................................................................................................................
Pinch Roller Arm Assembly23................................................................................................................................................................
Guide Arm Assembly And Press Lever Assembly23................................................................................................................................................................
Audio Control Head23................................................................................................................................................................
Loading Motor23................................................................................................................................................................
Capstan Motor24................................................................................................................................................................
Pole Base Assembly (supply Or Take-up Side)24................................................................................................................................................................
Rotary Encoder25................................................................................................................................................................
Clutch Unit25................................................................................................................................................................
Change Lever Assembly, Direct Gear, Clutch Gear And Coupling Gear25................................................................................................................................................................
Link Lever26................................................................................................................................................................
Cassette Gear, Control Cam And Worm Gear26................................................................................................................................................................
Control Plate26................................................................................................................................................................
Loading Arm Gear (supply Or Take-up Side) And Loading Arm Gear Shaft27................................................................................................................................................................
Take-up Lever, Take-up Head And Control Plate Guide28................................................................................................................................................................
Capstan Brake Assembly28................................................................................................................................................................
Sub Brake Assembly (take-up Side)28................................................................................................................................................................
Main Brake Assembly (take-up Side), Reel Disk (take-up Side) And Main Brake Assembly (supply Side)28................................................................................................................................................................
Tension Brake Assembly, Reel Disk (supply Side) And Tension Arm Assembly29................................................................................................................................................................
Idler Lever, Idler Arm Assembly29................................................................................................................................................................
Stator Assembly29................................................................................................................................................................
Rotor Assembly29................................................................................................................................................................
Upper Drum Assembly30................................................................................................................................................................
Compatibility Adjustment31................................................................................................................................................................
Checking/adjustment Of Fm Waveform Linearity31................................................................................................................................................................
Checking/adjustment Of The Height And Tilt Of The Audio Control Head32................................................................................................................................................................
Checking/adjustment Of The Audio Control Head Phase (x-value)32................................................................................................................................................................
Checking/adjustment Of The Standard Tracking Preset33................................................................................................................................................................
Checking/adjustment Of The Tension Pole Position33................................................................................................................................................................
Electrical Adjustment35................................................................................................................................................................
Precaution35................................................................................................................................................................
Required Test Equipments35................................................................................................................................................................
Required Adjustment Tools35................................................................................................................................................................
Color (colour) Bar Signal,color (colour) Bar Pattern35................................................................................................................................................................
Switch Settings And Standard Precautions35................................................................................................................................................................
Servo Circuit36................................................................................................................................................................
Switching Point36................................................................................................................................................................
Slow Tracking Preset36................................................................................................................................................................
Video Circuit36................................................................................................................................................................
Auto Picture Initial Setting36................................................................................................................................................................
Timer Clock37................................................................................................................................................................
Main Board Assembly(hr-j677ms/j777ms)<03>48................................................................................................................................................................
Audio Control Head Board Assembly <12>53................................................................................................................................................................
Mini Front Board Asseembly(hr-j271ms/j471ms)<28>54................................................................................................................................................................
Charts And Diagrams55................................................................................................................................................................
Notes Of Schematic Diagram55................................................................................................................................................................
Circuit Board Notes56................................................................................................................................................................
Board Interconnections57................................................................................................................................................................
Video/n.audio Schematic Diagram [hr-j271ms, Hr-j471ms]58................................................................................................................................................................
System Control Schematic Diagram [hr-j271ms, Hr-j471ms]59................................................................................................................................................................
Switching Regulator Schematic Diagram [hr-j271ms, Hr-j471ms]60................................................................................................................................................................
Tuner Schematic Diagram [hr-j271ms, Hr-j471ms]61................................................................................................................................................................
Display And Mini Front Schematic Diagrams62................................................................................................................................................................
Bs Connection And Lithium Battery Schematic Diagrams [hr-j271ms, Hr-j471ms]63................................................................................................................................................................
Terminal Schematic Diagram [hr-j271ms, Hr-j471ms]63................................................................................................................................................................
Board Interconnections [hr-j677ms, Hr-j777ms]64................................................................................................................................................................
Video/audio Schematic Diagram [hr-j677ms, Hr-j777ms]65................................................................................................................................................................
On Screen Schematic Diagram [hr-j677ms, Hr-j777ms]66................................................................................................................................................................
System Control And Lithium Battery Schematic67................................................................................................................................................................
Switching Regulator Schematic Diagram [hr-j677ms, Hr-j777ms]68................................................................................................................................................................
Tuner Schematic Diagram [hr-j677ms, Hr-j777ms]69................................................................................................................................................................
Display And Mini Ope Schematic Diagrams [hr-j677ms, Hr-j777ms]70................................................................................................................................................................
Terminal And R.pause Schematic Diagrams [hr-j677ms, Hr-j777ms]71................................................................................................................................................................
Demodulator Schematic Diagram [hr-j777ms]72................................................................................................................................................................
Main, A/c Head, Mini Front, Lithium Battery And Loading Motor Circuit Boards [hr-j271ms, Hr-j471ms]74................................................................................................................................................................
Main, A/c Head, Mini Ope, R.pause, Lithium Battery And Loading Motor Circuit Boards [hr-j677ms, Hr-j777ms]77................................................................................................................................................................
Fdp Grid Assignment And Anode Connection78................................................................................................................................................................
Demodulator Circuit Board [hr-j777ms]78................................................................................................................................................................
Remote Control Schematic Diagram79................................................................................................................................................................
Voltage Charts [hr-j677ms, Hr-j777ms]80................................................................................................................................................................
System Control Block Diagram81................................................................................................................................................................
Video Block Diagram82................................................................................................................................................................
JVC HR-J271MS Instructions Manual (46 pages)
JVC Video Cassette Recorder Instruction Manual
Table of contents
Table Of Contents1................................................................................................................................................................
Safety First2................................................................................................................................................................
Safety Precautions2................................................................................................................................................................
Installing Your New Recorder3................................................................................................................................................................
Basic Connections3................................................................................................................................................................
Initial Settings4................................................................................................................................................................
Video Channel Set4................................................................................................................................................................
Auto Set Up6................................................................................................................................................................
Select Language6................................................................................................................................................................
On-screen Displays8................................................................................................................................................................
Clock Set10................................................................................................................................................................
Playback11................................................................................................................................................................
Basic Playback11................................................................................................................................................................
Playback Features12................................................................................................................................................................
Manual Tracking13................................................................................................................................................................
Instant Review13................................................................................................................................................................
Repeat Playback13................................................................................................................................................................
Index Search14................................................................................................................................................................
Skip Search14................................................................................................................................................................
Next Function Memory15................................................................................................................................................................
Picture Control15................................................................................................................................................................
Tape Position Indicator15................................................................................................................................................................
Recording16................................................................................................................................................................
Recording Features17................................................................................................................................................................
Picture System18................................................................................................................................................................
Start Recording19................................................................................................................................................................
Timer Recording20................................................................................................................................................................
Express Timer Programming20................................................................................................................................................................
Auto Sp Lp Timer24................................................................................................................................................................
Auto Timer24................................................................................................................................................................
Automatic Satellite Programme Recording25................................................................................................................................................................
Special Features26................................................................................................................................................................
Remote Control Functions26................................................................................................................................................................
Colour System30................................................................................................................................................................
Editing30................................................................................................................................................................
Edit To Or From Another Video Recorder30................................................................................................................................................................
Edit From A Camcorder31................................................................................................................................................................
Information On Multi-system Compatibility32................................................................................................................................................................
Pal Ntsc33................................................................................................................................................................
Tape-to-tape Editing33................................................................................................................................................................
Tuner Set34................................................................................................................................................................
Auto Channel Set34................................................................................................................................................................
Manual Channel Set35................................................................................................................................................................
Delete A Channel36................................................................................................................................................................
Troubleshooting38................................................................................................................................................................
Other Problems40................................................................................................................................................................
Questions And Answers41................................................................................................................................................................
Index42................................................................................................................................................................
Display Panel43................................................................................................................................................................
Specifications45................................................................................................................................................................
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