Head Replacement And Alignment - Teac A-4300SX Service Manual

6. HEAD REPLACEMENT AND ALIGNMENT
—MECHANICAL—
6-1 HEAD REPLACEMENT AND WIRING
To replace a single head a special 2 mm nut driver is re-
quired. Remove the 2 nuts (A) on the defective head
through the access hole provided. This releases the head
from the mounting plate. Note the position of the wires on
the circuit board. Connect the new head in the same man-
er. Replace the nuts securing the new head to the plate.
Perform head alignment before operation.
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aN NUTS (A)
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RECORD REVERSE — i FORWARD
Fig. 6-2 Head Wiring —.Rear View —
6-2 HEAD ADJ. SCREWS AND ALIGNMENT
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© © @ dg 652°2
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@ Azimuth adj. screws
© Height and Tilt adj. screws
© Tangency adj. Nuts
Fig. 6-3 Head Adjustment Screws and Alignment
6-3 VISUAL HEAD ALIGNMENT
Coarse Adjustment:
Without Tape
BIE otic 3 eras By Height and tilt screws
This alignment is performed by viewing from
the side without tape threaded.
Check that the head surface is parallel to the
tape guide surface.
With Tape
TANGENCY .... By Head mounting Nuts
Loosen
the head mounting nuts. Adjust the
head so that the vertical alignment of the head
gap is perpendicular to the surface of the tape,
then tighten the head mounting Nuts.
HEIGHT ....... By Height and Tilt screws
This alignment is checked visually by looking
at the position of the head.
The head core for track-] (inner core) should
be even with the inner edge of the tape.
AZIMUTH ...... By Azimuth adj. Screw
Adjust the azimuth adj. screw so that the gap
of the head is perpendicular to the tape travel.
6-4 MIS-ALIGNMENT OF THE HEADS
i TILT [3] HEIGHT
iview from side of head)
(view from front of head)
crews | Adjust by @ Screws
TANGENCY
view from top of head)
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AZIMUTH
(view from front of head)
crews
T-615
Fig. 7-3. Head Mis-Alignment —Examples—