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ress RE RO button.
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RE RO
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Figure 4-1
Head Adjustments
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LO
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1. Cle n nd dem gnetize the he ds.
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Hl
MED
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HI
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lace CAL RE RO switch in the CAL position.
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ress RE RO and SAFE buttons.
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lay the 10kHz tone on the alignment tape.
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nab
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NAB
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IEC
EC
TW27A-I
TW27A-2
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Figure 4-2
Repro Card Adjustments
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Page 4-2
2. Check the he d wr p lignment of the Repro
nd Record he ds.
Select the tape speed which will be used during
recording.
Load the reproduce alignment tape correspon
ding to the selected tape speed.
ress thumb against supply reel to apply a drag
force to the motor. VU meter should dip slight
ly.
If the VU meter level increased under load, the
head wrap requires adjustment. Turn the Repro
head wrap adjustment screw to peak the
reading on the VU meter.
3. Check the zimuth lignment of the Repro nd
Record he ds.
Connect the outputs of the outside tracks to
the vertical and horizontal inputs of the
oscilloscope. Set the vertical gain equal to the
horizontal gain for observing a Lissajous pat
tern.
lay the 10kHz tone on the alignment tape. The
oscilloscope Lissajous pattern should be tilted
to 45°.
If necessary, slowly turn the reproduce head
azimuth adjustment to tilt the Lissajous pattern
to 45°.
ress CUE button. Check the record head wrap
as above, and adjust as necessary.
RE RO
BDCST
CUE^
LVL @
CAL
REP Q)
LO
LVL @
HI
LVL @
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