Hitachi VT-FX8000E Service Manual page 84

CONTENTS
CHAPTER 1 GENERAL INFORMAT1ON )
Appearances of US Mechanism ......cceeeeeeeee
How to Remove the Cassette when a Mal func'
Has Occurred in the Mechanism ..++...-----0-+
CHAPTER 2 DISASSEMBLY )
1. Before Starting Disassembly .......sssseee 1
2. Identifications and Locations of
Components of US Mechanism..... ane
3. US Mechanism Disassembly Method ..
Removal of Heads and Motors
Removal of Tape Transport Parts
Removal of Tape Drive Parts ......
Removal of Guide Rolier Assemblies .
Disassembly Procedure Diagrams .
3-1. FE head...
3-2. A/C head
3-3. Cylinder motor assembly ........
3-4. Capstan motor .
3-5. Loading motor .
3-6. Tension arm, tension band and
JOG BPM veeevereereeeee eee
3-7. Supply subbrake, supply ree! disk,
brake (L), idler gears 1 and 2.
3~8. Impedance roller and HC mechanism
3-9. Pressure rofler arm ..ssseeees
3-10. Spiral gear and P. out arm.
3-11.PR idler gear
3-12.FS brake and P. drive gear . cove 2-7
$-13,Brake (R), Take-up brake, take-up
reel disk and FR arm...
3-14.Safety arm sssseeee onan
3-15.Cam gear and LM wheel gear .
3-16.Loading gears (R) and (L) ....
3-17. Pulley assembly, drive belt,
torque change arm, torque change
gear, FR drive gear and transmission
gear ..
3-18.FL idler gear and FL change gear . . . 2-10
B19, Slider ...-..csseeceeennnceeeeesenes 2-10
3-20. Cylinder base and guide roller
assemb| [GS ..sssserocescenearevovces 2-10
Items to Check After Reinstalling the
US Mechanism ...ccscccesescereccsssersscer 2-11
4, Identifications and Locations of Parts
in US-FL Mechanism ....sscceessseceeeesoes 2-12
5. Procedure to Dismantte the
US-FL Mechanism . 2-12
5-1. Door arm, switch arm, bevel gear
and FL deat' icceacnassensscocsvecaasas 2-12
5-2. Side brackets (R) and (L), cassette
holder and FL drive arm .....eseeeeeee 2-13
CHAPTER 3 MECHANICAL ADJUSTMENT )
1. List of Adjustment Jigs
2. Diagram showing Adjustment Locations
3. Tape Transport Component Adjustments
3-1. Reel disk height adjustment .
Tension pote position check .
Guide roller height adjustment re
. Audio/control (A/C) head adjustment. -
Adjustments after replacing
the cylinder
3-6. Tension/Torque checks
MECHANISM OPERATION CHECK AND
CHAPTER 4) 4a | NTENANCE/ INSPECTION
Mechanism Operation Check ..sssesaceneresere 4-1
1. Method to set the VCR to the loading
state without loading a cassette ....... 4-1
2. Checking the operation in each mode .... 4-2
Maintenance/ Inspection Procedure .......s.082 4-3
1. Necessity of Maintenance and
Inspection .
2. Scheduled Maintenance and Inspection ... 4-3
3. Before Determining that the
VCR is Faulty seeseees
4. Tools Needed for Inspection
and Maintenance .....-
5. Cleaning Procedure
6. Lubricating and greasing .
7. Maintenance/Inspection Schedules of
Mechanical Parts ....s--seeeereeeerenees 405
CHAPTER 5 EXPLODED VIEWS )
1. US-MECHANISM (TOP VIEW) SECTION
2. US-MECHANISM (BOTTOM VIEW) SECTION
3. US-FL MECHANISM SECTION ..
Identifications of Components in
US Mechanism ...cscccsnccceneccccnsereessnnne 5-4