Sony TC-K333ESG Service Manual page 9

5. (Preliminary Azimuth Adjustment)
After demagnetizing and cleaning the adjustment
head, play back WS-48B (3 kHz, 0 dB).
Turn screw @ so that the reading on the level
meter of the unit or that of the level meter
connected to LINE OUT is maximized.
If the screw is turned at least half a revolution,
repeat the adjustments from step 1.
6. (Tape Path Check) Connect the oscilloscope to
LINE OUT and play back P-4-A100 (10 kHz, -10
dB) to display a resurge waveform. After 20
seconds of record/playback (after the tension
within the loop has been increased sufficiently),
make sure the variation in the resurge is within
+ 90 degrees (within +45 degrees is desired).
If the variation is greater than this, it is because
the declination and/or the height adjustment is
not perfect. Repeat the adjustments from step 1.
test tape
P-4-100S
(10 kHz, —10 a8) Oscilloscope
UNE CUT
Oscilloscope Resurge Waveform
OQ ®OO®PO®
In Phase 45° Jt SO, -$80°
Good "Baa
Erasehead
Note: Only perform this adjustment when the
erasehead is to be replaced.
1, Insert the mirror cassette and put the unit in
record/playback mode.
2. (Azimuth Adjustment) Adjust the azimuth of the
erasehead by adjusting screws @ and @ so that
the tape runs as evenly as possible.
SS
Normal Tighten @ Tighten @
Loosen @ Loosen @
(The erasehead as seen when erasing the mirror
cassette.)
4. (Declination Adjustment) Leaving
| TC-K333ESG/K950ES
3. (Height adjustment) Turn screws ©,@, and @ all
by the same angle so that the portions of the
erasehead visible at top and bottom are nearly
of equal width. If the width at the top is greater,
tighten the screws; if the width at the bottom
is greater, loosen the screws.
Erasehead (The erasehead as seen through the
mirror cassette.)
oe
Tape —»
et en J
Make these the same width.
it in the
playback position, put the back tension to 0 and
make certain the erasehead part and supply pinch
roller guide part do not shift. If there is a shift,
turn the screw ® and change the declination.
Looking at it using the mirror cassette, if the
tape shifts up, tighten the screw, and if it shifts
down, loosen the screw.
Repeat the adjustments beginning with step 2 and
fine adjust the height and declination. And make
sure the tape does not curl up on the pinch roller
guide or the guide part of the record/playback
head.
6. (Depth Adjustment) In order to make the entire
head play the tape smoothly, and to make sure
the depth of the erasehead is neither too shallow
nor too deep, loosen screw @ a bit.
About a eae 5 mm
Normal sae ae +. | | a
ba playback
Not deep enough Too deep
1. Check to make sure that there are no curls or
shifts throughout the whole tape path and that
the tape runs smoothly.
z Reapply the locking compound to the adjusted
screws. (The locking compound should only be
applied to screw © after the azimuth has been
adjusted.)