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SECTION 3
ADJUSTMENTS
1.
MECHANICAL
ADJUSTMENTS
PRECAUTION
1.
Clean the following parts with a denatured-alcohol-moistened swab:
record/playback head
pinch roller
erase head
rubber belts
capstan
|
idler
2.
Demagnetize the record/playback head with a head demagnerizer.
Do not use a magnetized screwdriver for the adjustments.
4.
After the adjustments, apply suitable locking compound to the parts
adjusted.
wW
TORQUE
MEASUREMENT
Meter reading
FWD
CQ-120C
30 — 60 gecm (0.42 — 0.83 ozeinch)
FF, REW
CQ-201B
70 — 120 gecm (0.97 — 1.68 ozeinch)
Tape Path Adjustment
*
Refer to adjustment Position on page 8 .
Note: When using the adjustment methods for other than replacement
reasons.
Torque
Preparation:
1.
Mirror cassette CQ009C 8-909-708-01
(or CQ012C 8-909-708-02)
If one does not have this, cut out the sections of a 120-munite cassette
shell as indicated below and use that cassette.
Cut out
2.
Phillips screwdriver (medium-size):
For the head adjustment screws
3.
Pen light
WS-48B (3 kHz, 0 dB)
P-4-A100 (10 kHz, — 10 dB)
we
Definition of Terms:
The figures are of a record/playback head.
Height
Declination
—_ Depth
Azimuth
Record/playback Head
Note: Only perform this adjustment when the record/playback head is to
be replaced.
1.
Insert the mirror cassette and put the unit in record/playback mode.
(Height adjustment) Check to see if the tape is curling at the tape
guide of the head. If it is curling tighten screws @, ©, and @,
»
respectively by the same angle moving the head so that it remains at
the same angle through-out the procedure. If it curls on the bottom
side of the mirror cassette (actually the inner side), tighten all the
screws equally; but loosen them if the tape begins to curl on the top
side (outer side).
inside ss _outside
Ra
of
normal
Curling on the
Curling on the
(record/playback head _ inner side.
outer side.
as seen from the side
Tighten screws
Loosen screws
of the erasehead.)
©, © and@.
©, @, and@.
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