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3. AUDIO/CTL HEAD
4. TAPE TRANSPORT SYSTEM
3-1. TAPE TRANSPORT ADJUSTMENT
CHECKS AND ADJUSTMENT
Audio Head
The tape transport system has been precisely
aligned at the factory and normally does not
require readjustment.
The following steps are
therefore necessary only in cases of frequent use
or when replacing parts which have an effect on
the tape transport system.
Approx.
25555555
0.06mm
4-1. TAPE TRANSPORT CHECK
Take-up Guide Pole
1. Using an ordinary cassette tape, switch back and
CTL Head
forth between PLAY and STOP modes several times.
2. During PLAY mode, observe the input and output
portions of the tape (A and B in the figure below) of
the head drum lead.
Confirm that the tape slips
neither upward nor downward with respect to the
lead as shown in Figure "Drum Lead Check-1".
Reference line
Audio/CTL Head Adjustment
1. Using an ordinary cassette tape, set to CUE mode.
Drum npa
B Drim Gugut
2. Turn screw © and adjust for smooth transport at the
take-up guide.
Tape Transport Check
3-2. AUDIO/CTL HEAD HEIGHT AND
SEPE DUMAS
AZIMUTH ADJUSTMENT
1. Connect the noise meter to the audio output.
2. Play the test tape (1 KHz color bar signal), turn nut @
back and forth a little at a time to set maximum audio
output level. (Rotate in a clockwise direction to adjust
the settings.)
3. Play the test tape, (8 KHz stair step signal), turn
screw ®) back and forth a little at a time to adjust the
azimuth so that the audio output level will reach a
maximum.
4. Play the test tape (1 KHz color bar signal), and make
|
sure that there is no significant change in the audio
Drum Lead Check-1
output level. If a large change remains, turn screw ©
back and forth a little at a time to adjust so that the
level change will reach a minimum.
5. When all adjustment is finished, lock up screw ©.
MA-4
"
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