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| WM-F31 /F41/F41SS
SECTION 2
ADJUSTMENTS
2.1
MECHANICAL
ADJUSTMENTS
PRECAUTION
Clean
the
following
parts
with a denatured-
alcohol-moistened swab:
playback head
pinch roller
capstan
rubber belts
Demagnetize
the 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.
A
NE
nh et Rt
A
UT LD NL
CLL
QLD
RQ
LE
RA
RC
Rt
RR
TE
a
UY
at
ll dt
wd
2-2.
ELECTRICAL
ADJUSTMENTS
CASSETTE Section
Tape Speed Adjustment
Setting:
VOL control:
mechanical mid
Procedure:
Mode:
playback
Function:
Tape
Specifications:
Digital frequency counter
2,985 — 3,015 Hz
Frequency
difference
between
beginning
and
end tape should be within + 1% (30 Hz). Adjust RV601
Playback Head Azimuth Adjustment
Procedure:
1.
Mode:
playback
Function:
tape
test tape
P-4-A063
(6.3 kHz, —10 dB)
HEADPHONES
Adjustment Location:
RV301
TAPE speed
adjustment
screw.
azimatch adjustment screw.
|
Torque Measurement
22-45g-cm
|
Porward
:
oer
(0:32-0:630e4nen).|
2 197"
§5-150g°cm
Fast
F
d
:
ae NEES)
(0.77-2.10z+inch)
Epon
55-150g+cm
0.5—2 g-cm
(0.007-0.03 oz-inchy | ©2102
Tape Tension Measurement
CQ403A
more than 120 g (4.3 oz)
test tape
WS-48A
{3 kHz, 0 dB)
HEADPHONES
2.
Turn
the adjustment
screw for the maximum
output levels. If these levels do not match, turn
the
adjustment
screw
until
both
of output
levels match together within 2 dB.
L-CH
output
peak
level
R-CH
eak
Screw
se
position
L-CH
R-CH
peak
peak
frequency
counter
within
2dB
—-e angle
— Continued 0
page 4 —
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