Sony TC-K670 - Mechanical Adjustments; Precautions and Preparation; Tape Path Adjustment

SECTION 4
ADJUSTMENTS
1. MECHANICAL ADJUSTMENTS
PRECAUTION Adjustment Position: As seen from the cassette,
side (top) and MD as seen
1. Clean the following parts with a denatured-alcohol-moistened swab: TC-KB70/KB77ES
record/playback head pinch roller head on (bottom).
erase head rubber belts
capstan idler
2. Demagnetize the record/playback head with a head demagnerizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the parts
adjusted.
Tape Path Adjustment
Note: When using the adjustment methods for other
than replacement reasons, please do not
tamper unnecessarily with the adjustment
screws or the erasehead because either the Supply pinch Takeup pinch
supply pinch roller guide or the record/ roller Erasehead Record/playback roller
playback head will be made the standard tape head
paths. Moreover, when it is necessary to
adjust and replace two or more of any of the
heads and/or pinch rollers, replace them one TC-K570
by one, completely taking out the first tape
path, and then replacing the second one.
(TC-K670/K677ES)
Preparation :
1. Mirror cassette CQO09C 8-909~708-01
(or CQO012C 8-909-708-02)
If one does not have this, cut out the sections of
a 120-minute cassette shell as indicated below head @
and use that cassette.
Record/playback Takeup pinch
head roller
Definition of Terms: The figures are of a record/
playback head.
Height Declination Depth Azimuth
Cut out
2. Phillips screwdriver (medium-size) :
For the head adjustment screws
Blade-type screwdriver (large-size) :
For the supply pinch roller adjustment screws
3. Pen light
4, WS-48B (3 kHz, 0 dB)
5. P-4-A100 (10 kHz,-10 dB)