Sharp VC-A30G Serviceanleitung Seite 20

VC-A30G(BR} VC-A30S(BR)
VC-A30GMIBR) VC-A30SM(BR}
VC-A30QM(BR) VC-A30SV(BR)
CHECKING THE FAST FORWARD BACK
TENSION
@ Remove the cassette housing control assembly.
® Checking
eae
a
7 Place the unit in the
fast forward mode.
: 2) ro Supply reel disk
pean a esac
Place the torque gauge on the supply
reek disk, and turn it clockwise very
slowly (one rotation every 2 to 3 seconds)
and check that the torque is within
Place the torque gauge on the take-up reel
disk, and turn it couterclockwise very slowly
{one rotation every 2 to 3 seconds) and check
CHECKING THE VIDEO SEARCH REWIND
BACK TENSION
@ Remove the cassette housing control assembly.
@ Checking
ewlgs
< g
=> -}PLAY|-
2 I a
vty,
N mp -|vsel mp
7 EVN
Push the play button to place Push the video search rewind
the unit in the playback mode. button to place the unit in the
video search rewind mode.
Torque gauge
15+5 g-cm that the torque is within the set value
45+ 20 g:cm.
Figure 1-33. aa
Note: Take-up ree! disk co
Set the torque gauge securely on the supply reel eirvescg
disk. If the torque gauge is not securely set on the Figure 1-35.
reel disk, measurement will be incorrect. Note :
CHECKING THE REWIND BACK TENSION
@ Remove the cassette housing control assembly.
@ Checking
/ Place the unit in the
rewind mode.
Take-up reel disk
Place the torque gauge on the
take-up reel disk, and turn it
counterclockwise very slowly
(one rotation every 2 to 3
seconds) and check that the
torque is within 15+ 5 g-cm.
Figure 1-34.
Note :
Set the torque gauge securely on the take-up reel
disk. If it is not secure, the measurement will be
incorrect.
20
Set the torque gauge securely on the take-up reel
disk. If it is not secure, the measurement will be
incorrect.
CHECKING THE PINCH ROLLER PRESSURE
@ Remove the cassette housing control assembly.
gl ph
»> ray] m=
LL Nes
a
Ley
Push the play button to place the
unit in the playback mode
Tension gauge
1,000-1,200 g
Use a finger
7—~ Pinch roller
Figure 1-36.