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K
Photo 7
■ GENERAL ADJUSTMENTS
Before Adjustment
1.
Set the Dolby NR switch to OFF.
2.
As dirty or magnetized heads can deteriorate
measurement results for various parameters, be
sure to perform head demagnetizing and head
cleaning, especially before adjusting frequency
response or head azimuth.
Designated Test Tapes
TEAC.MTT-111 (3 kHz)
TEAC.MTT-212C (160 nWb/m)
or MTT-212 (250 nWb/m)
TEAC.MTT-114 (10 kHz)
TEAC.MTT-216 (3180+ 120 jus)
or MTT-316 (3180 + 70
us)
TDK
.SA C-60 (Cr02 tape)
TDK
.ADC-60 (LH tape)
TDK
.MA C-60 (Metal tape)
Playback Adjustments
1.
Tape Speed Adjustment
a)
Connect a frequency counter to the left or right
channel LINE OUT.
b)
Play test tape TEAC MTT-111 (3 kHz) and adjust
the semi-fixed VR in the drive motor base for
a frequency counter reading of 3000 Hz
-+ 2 °oHz.
MTT-HI
c
c
frequency counter
5
P.B
LINE OUT
OODO O
:
OOOO 0
-
-
2.
Playback Level Adjustment
a)
Connect a VTVM to LINE OUT.
b)
Play test tape TEAC MTT-212C (160 nWb/m)
and adjust VR 101 (left channel) and VR 102
(right channel) for a LINE OUT level reading of
—7±1 dBm (346 mV).
3000
t
'5 Hz
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