Mitsubishi HS-U778 Specifications download pdf (Page 2)

CONTENTS

– FILE “COVERPGE” –

SPECIFICATIONS ...........................................................1

CONTENTS......................................................................2

GLOSSARY OF ABBREVIATIONS ................................4

– FILE “DISASSY” –

SAFETY PRECAUTIONS ................................................1

CONNECTION .................................................................3

DISASSEMBLY ...............................................................4

HOW TO EXECUTE CIRCUIT BOARD SERVICE ..........7

CHIP PARTS REPLACEMENT .......................................9

– FILE “ELCTADJ” –

HOW TO INITIALIZE THE E

PROM ................................1

WHEN REPLACING IC5A0 .............................................1

ELECTRICAL ADJUSTMENTS.......................................1

Servo circuit Adjustment...............................................2

Y/C signal circuit Adjustment........................................2

– FILE “MECHAADJ” –

MECHANICAL ADJUSTMENT

AND REPLACEMENT ..............................1

1. DECK Cleaning...................................................1

1-1 VIDEO HEAD .................................................1

1-2 Tape Running System....................................1

1-3 REEL DISK Drive System ..............................1

2. Replacement of Major Parts ..............................2

2-1 CLEANING ARM, FELT RING ......................2

2-2 STAY PLATE.................................................2

2-3 BOTTOM ASSY.............................................3

2-4 INSERT GUIDE (TU).....................................4

2-5 INSERT GUIDE (SP).....................................4

2-6 REC HOLDER, REC LEVER,

REC SPRING ................................................5

2-7 F/L ARM ASSY, F/L BEARING .....................5

2-8 A/C HEAD UNIT ............................................6

2-9 F/E HEAD ......................................................6

2-10 SENSOR COVER (TU) .................................7

2-11 SENSOR COVER (SP) .................................7

2-12 REV UNIT (TU),

REV UNIT (SP)..............................................8

2-13 MODE POSITION UNIT ................................8

2-14 REEL BELT, PULLEY BUSH,

THRUST WASHER,

BELT PULLEY, SHIFT SLIDER,

PULLEY GEAR ASSY, SLIP GEAR,

SLIP SPRING, SLIP 2 WASHER,

THRUST WASHER, SLIP ADJUSTER,

IDLER 2 UNIT ................................................9

2-15 CAPSTAN BRAKE SPRING,

CAPSTAN BRAKE ASSY ............................11

2-16 FC HOLDER, MOTOR HOLDER,

LOADING WORM,

LOADING MOTOR ASSY,

WORM WHEEL............................................12

2-17 PINCH ARM CAP, PINCH ASSY.................13

2-18 F/L PLATE, DOOR ARM..............................13

2-19 BRAKE CAM PLATE....................................14

2-20 GUIDE LAMP ...............................................15

2-21 MAIN CAM, GUIDE ARM (TU),

BRAKE LEVER, LB PIN...............................16

2-22 L/D LOCK LEVER ........................................17

2-23 BRAKE BELT (SP), BELT HOLDER............17

2-24 BELT LEVER, BELT ADJUSTER ................18

2-25 TENSION ARM, TENSION LEVER,

TENSION SPRING, TENS AXIS HOLDER,

REEL DISK (SP side)...................................18

2-26 BRAKE BELT (TU).......................................19

2-27 BRAKE (TU), REEL DISK (TU side) ............19

2-28 SHIFT LEVER ..............................................20

2-29 CHARGE SPRING, SWING LEVER,

CHARGE ASSY ...........................................21

2-30 LOADING ARM ASSY (SP),

LOADING ARM ASSY (TU) .........................21

2-31 A/L LEVER ...................................................22

2-32 TAPE GUIDE ASSY (SP),

TAPE GUIDE ASSY (TU).............................24

2-33 DRUM CLAMPER, DRUM ASSY.................25

2-34 DRUM MOTOR STATOR, BRUSH SPRING,

SPACER, ROTOR CASE, END RING,

BRUSH, UPPER DRUM ASSY....................26

2-35 CAPSTAN MOTOR......................................27

2-36 IMPEDANCE UNIT (SP),

FLYWHEEL (SP)..........................................29

2-37 SSW HOLDER, SSW SLIDER.....................29

3. Interchangeability Adjustment

of the Mechanism.............................................30

3-1 Adjustment of BACK TENSION and

TENSION POLE's Position ..........................30

3-2 Check and Adjustment of

FM Envelope ................................................31

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Mitsubishi HS-U778 Specifications Page 2

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