Sony TC-FX45 - Manual (Page 13)

TC-FX45
SECTION 3
ADJUSTMENTS
3 - 1 . M E C H A N I C A L A D J U S T M E N T S
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
tension gauge
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