Hitachi D-550 Serviceanleitung Seite 17

Pressure roller pressure
one.
Pressure roller
Capstan shaft
te 300~ 450g
Fig. 45
Torque
37 to 70g-cm
Take up
INSPECTION OF MECHANISM
SPRING
™
SS
Tension gauge
\
\
Pressure roller
Braking force
Take up reel Less than 5g-cm
Supply reel
Switching time
Auto stop
| D-55089, Fs, Vv
Supply reel Take up reel
Less than 5g-cm
Within 10 sec
Note : Time required for auto-stopping after
the tape has stopped to run.
Playback start
Within 0.5 sec
Note : Time required to start playing back
after the PLAYBACK button is
depressed and locked.
Pause start
Within 0.5 sec
Note : Time required to start playing back
after the lock of the PAUSE button
has been released.
Fast forward 75 to 120g-cm
Rewind 75 to 120g-cm
Back tension
Less than 4g-cm
Take up reel
attached.
1 to 2g-cm
Supply reel
forward mode.
become irregular because of oii splashes.
SECRET SIE
Note : Measure it when the counter belt is
Note : Measure it, in the playback or fast
LUBRICATION
Lubrication
From 0.5 to 3.0 sec
Note : Time required for the cassette lid to
open completely after the EJECT
button is depressed.
Oil or grease
Motor shaft bearing
Capstan shaft bearing
Pressure roller bearing
as 7 ee