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WM-A53/B53
SECTION 4
ADJUSTMENTS
Meter Reading
Torque Measurement
[Mode
| Torave Mew
I.
Clean
the
following parts with a denatured
alcohol-moistened swab:
WD
FWD Back
| Tension
|
(0.02 to 0.06 oz-inch)
|
a
|
25 to 55 g-cm
'
(0.35 to 0.76 oz-inch)
+
CQ-102RC
°F
'
,
REW
2.
Demagnetize
the playback head with a head
demagnetizer.
3.
Do
not
use a magnetized screwdriver for the
adjustments.
REV Back
|
1.5 to 4.5 g-cm
Tension
(0.02 to 0.06 oz-inch)
|
55 to 150 g-cm
(0.76 to 2.1 oz-inch)
55 to 150 g-cm
(0.76 to 2.1 oz-inch)
Tape Pulling Force Measurement
|
TEST TAPE
'
Dolby NR Head Azimuth
P-4-A063| 6.3kHz,-104B | Ginctment
F
F
4.
After the adjustments,
apply suitable locking |
compound to the parts adjusted.
CQ-201B
5.
The adjustments should be performed with the
rated
power
supply
voltage
(3.0V)
unless
otherwise noted.
Playback Head Height Adjustment
(Note on Playback Head Replacement)
direction
tape guide
1. Turn the screw M2 x 5 so that the
~ (BY line
of HEAD
GUIDE becomes appraximately parallel
to the (A) — (A) line of TAPE GUIDE.
2. When
there is a tape curl on HEAD GUIDE (),
) using a mirror cassette, turn the screw M2 x 5
to eliminate the tape curl.
|
For example in the figure:
7
ee curl marked O is eliminated by |
\clockwise the screw M2 x 5 (right).
|
:
3. Check in the REV mode by the same way as in the —
FWD
mode.
_
os
7
a
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