TC-FX45
SECTION 3
ADJUSTMENTS
3-1. MECHANICAL ADJUSTMENTS
PRECAUTION
1.
Clean the following parts with a
denatured-
3.
alcohol-moistened swab:
record/playback head
pinch roller
4.
erase head
rubber belts
capstan
idlers
5.
2. Demagnetize the record/playback head with a
head demagnetizer.
Do not use a magnetized screwdriver for the
adjustments.
After the adjustments, apply suitable locking
compound to the parts adjusted.
The adjustments should be performed with the
rated power supply voltage unless otherwise
noted.
lead Height Adjustment
1. Prepare an adjustment cassette as shown below.
C-
1
Cur out hatched
tape cassette
portions.
2. In playback mode and viewing from the front,
adjust the head heights to eliminate tape curl
and tape twist at portions of the arrow.
erase head
record/playback
>;
3-513-237-01
(t=O.l)
3-513-237-11
(t=0.2)
Shim, head height adjustment
Soft Eject Adjustment
Specification
Set the tape (C-90) and adjust
the adjustment screw so that
the EJECT TIME is within the
specification.
fast
@
slow
adjustment screw
Torque Measurement
1
Torque
Torque meter
Meter reading
28-
60gm-cm
Forward
CQlO2C
’
(0.38
-
0.83 oz-inch)
2.5
-
6g-cm
Back Tension
(0.03
-
0.07 oz-inch)
Fast Forward
80
-
165 g-cm
and Rewind
(1.1
-
2.2 oz-inch)
Pinch Roller Pressure Measurement
-
Playback Mode
-
@ Slowly return he pinch roller
and read the spring scale just when
the pinch roller starts rotating.
(The
capstan
should
pinch
roller
\
0
tension gauge
-14-
