
Connect one learl iD rinq To 3.2 chm voice coil
Iip - No Connection Conn.
To Use An External Amplifier-
Plug the external amplifier into the ilOutput
Jack" through a two conductor plug connected as shown
in sketch.
To Edit And Splice Tape-
NOTEI Since it is impossible to edit and splice one
track without affecting the othgr, recordings
to be edited should be limited to one track
onlY.
1. Tape may be edited by cutting out unwanted
portions, or by joining selections into another se-
quence. Announcements can be inserted between
selections, etc. Unused tape can be spliced for re-
use.
2. Forbest results cut tape at a slightdiagonal,
joining ends together with a butt joint and fastening on
the glossy side with splicing tape. Trim off any ex-
cessive width.
To Erase A Recording-
In the record position any recording on the tape
is automatically erased before the new recording is
put on the tape" Should .it be desired to erase a
recording without recording new material, follow the
normal recording procedure, except set the volume
control to the full counter-clockwise position.
ADJUSTMENTS
Spindle (19 And 48) End Play Adjustment-
The splndles should have from l/ 321, to /16'r of
up and down movement. To adjust loosen set screw
(65) on spindle to be adjusted and move the pulley (5b)
up or down as required until the correct end play is
obtained.
Take-Up Lever Adjustment-
Spring (83) on the take-up lever (90) controls
the timing of the left take-up reel holder (9). With
the control knob (5) in the play back position, the
take-up reel should start revolving at the same time
or a little after the Pressure Roller (43) starts pull-
ing the tape past the head (39).
Check adjustment by placing a fully loaded ?"
reel on the take-up spindle. Rewind for about l0
seconds. Move the control knob (5) to the playback
position and observe the action described above.
If adjustment is required, bend ear on take-up
arm (85) in the position and direction indicated in
PAGE 4
sketch on exploded view. Care must be exercised
when making this adjustment and repeated trials be-
tween bends should be made.
Take-Up And Feed Reel Drag-
When the control knob (5) is placed in the
't{eutral" position the reels should stop promptlywith
a minimum of overrun. There should be no looping
of the tape. With control knob (5) in the neutral po-
sition and without reels on the holders, they may re-
volve slightly, but once the reels are put in place they
should not revolve.
Stops, labeled rrCtt and "D" on Figure 3E!, lo*
cated on baseplate (22) controls the above actlon.
They regulate the amount of return that take-up arm
(85) or rewind arm (52) makes aJter controls have
been released; not suJflcient return would cause con-
tinued Fast Rervind or Fast Forward operation, while
too much return would not allow drive belts (88) or
(59) to put a drag on the respective pulleys. Bend
these stops carefully so as to obtain operation de*
scribed above. Stop "C" controls the take-up side
while stop "D" controls the rewind side.
Head Alignment Adjustment-
It is extremely important that the llead (39) be
lined up perfectly with the tape. If not, the result
will probably be low output, track overlap, or loss of
high frequencies.
l. Chassis 567.58030, 528.58030 and 528.58010
(SHURE Head).
If the SIIURE Head requires replacement, the
complete assembly composed of the head and head
holder should be replaced. The head holder is ad-
justed individually to the head and sealed at the factory.
When installing head (39A) observe the following
precautions:
. HEAD HEIGHT: Place a " l?9t' galrge (between
ll/64" and 31116') near the mounting bracket and
between base plate (22) and bottom of head holder.
Push down on head (39A) and tighten set screw (23).
Remove gauge"
An alternate method of adjusting the head height
when a gauge is not available is as follows:
(a) Remove the pressure shoe assembly (36)
from the pressure bracket so the head can be ob-
served through the opening in the pressure bracket"
(b) Align head (39A) so the bottom of the
head opening is at the same level (or slightly higher)
as the corresponding bottom of the opening of the
pressure bracket.
(c) lViththe unit pulling tape, the tape should
approach the tahe-up reel nearlycentered between the
flanges of the reel. If the tape runsagainst the bottom
flange, it is an indication that the head is too low.
(d) Make "Output Responserr adjustment as
described in Section 3 below.
2. Chassis 567.58031, 528.5803f and 528.58011
(Michigan Magnetic llead)
On units using the Michigan Magnetic Head, a
Connect to shield
To external amplifier