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7-6.
MECHANISN MAINTENANCE AND
CHECKING
7-6-1.Periodic Checking and Maintenance Items and
Service Jigs
The following
maintenance
and periodic checking
procedures
are
recommended
to ensure
proper
operation,
and to protect the tape from dirt and
damage.
Also these procedures should always be
followed after repairing the unit.
(1) PERIODIC
CHECK
ITEMS
ASSY, HOLDER,
BAND
COMPLE,
CYLIDER, 2N4P
ASSY, CYLINDER, UPR, 2N4P_
.
SPECIAL WASHER
TAPE GUIDE
COMPL,
BRACKET,
HEAD
ASSY, LEVER, REV GUIDE
COMPLE,
PINCH POLLER
ASSY, GUIDE, ROLLER
HEAD, FULL ERASE
ROLLER,
IMPEDANCE
ASSY, EARTH, CYL.
ASSY, REEL, SUPPLY
ASSY, REEL, TAKE UP
ASSY, GEAR, ONEWAY
GEAR, REEL TAKE UP
COMPLE,
iDLER,CLUTCH
ASSY, IDLER
PULLY, REEL
MOTOR,
CAPSTAN
BELT, REEL DRIVE
ASSY, GEAR, FRICTION
ASSY, BRAKE SUB T
ASSY, BRAKE, SUPPLY
ASSY, BRAKE, TAKE UP
ASSY,
BRAKE, CAPSTAN
HOLDER, WORM
ASSY, LOADING
MOTOR
BELT, LOADING
GEAR, HELICAL
CAM, MODE
CAM, MAIN
FF, REW, REV, PLAY TORQUE
PLAY B- T TORQUE
ORONO
OR ORORORORC)
Tape
Path
System
Reel
Drive
System
Check
Performance
| Loading
Drive
Note
:
The back tension torque is the value that
has been measured by the cassette torque
meter (VHT-063S).
The torque of FF, REV,
REW, and PLAY represent those measured
with them locked by the torque guage. FF
and REW are values 2 seconds after starting.
—
105 —
eO0\pPrepo
pjoOooe
O9000005R
> QgUoOPepb
D> poorer
eo00o0
0 8 0000
ef
Torque value :
FWD
: 600 gcm or more
REW
: 600 gcm or more
PLAY (2H):
100 to 160 gcm
REV : 210 to 280 gcm
Back tension : 52 + 13 gcm
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