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'
Input setting
ADJUSTMENT
Output setting
Deck setting
| Adjustment points
Adjustment method
Fig.
0 dBs—0.775 V
Degauss R/P head by head
;
Power: OFF,
Degaussing
haaae
Recording head, Erase
eraser, Clean R/P head, erase
(1)
and
—
a
Sr
9
head, Capstan, Pinch
head, capstan, pinch roller by a
cleaning
H
Pla
9
'roller (Decks A and B)
cotton swab soaked with
v
alcohol.
TCC-153,
SCC-1727_
|
Azimuth adjustment
Maximize the output and adjust
'
|
:
screw
so that Lissajous pattern on
MTT-114
B
PLAY
[2]
R/P head azimuth
10 kHz, —10 dB
6)
L
(Decks A and B}
oscilloscope nears a line slanted
tal
!
i
(FWD, RVS)
45°
|
IL Mechanism adjustment (X28-238)
ey
ras
ae
to
;
_.
TCC-110,
SCC-1727
Tape speed
aie ia
'Bi
SaNE yO EHD. a el
Deck A: VR5
Adjust so that frequency is 6 kHz
psi
(double speed)
|
3 kHz
|
|
TEST 1 MODE. ees
| Deck B:
VR6
at tape center
=
Seg
eet
of
Li
fs
TCC-110, SCC-1727,
|
.
Tape speed
a MIT.AN1
2
i
B)
=e
Deck A: VR7
Adjust so that frequency is 3 kHz
<2>
(norma! speed)
3 kHz
Y
Deck B:
VR8
at tape center.
|
Ill, Printed board adjustment (X28-238)
7
=
Pa
_
'
MTT-150
Adjust so that playback output is
400 Hz (200nWb)
i
—3.5 dB
MTT-256, SCC-1727
Deck A: VR1(L) VR2(R)
Adjust so that playback output ts
f
:
<I>
Playback level
316
Hz (160nWb)
'B)
mer
| Deck B: VR3(L) VRa(R) | —6.0 dB
ae:
MTT-256U, TCC-160
Adjust so that playback output is
315 Hz (250nWb)
—2.5 dB
Adjust the electronic
|
5
fy
Snake that | x45
Record 1 kHz and 10 kHz
Deck
B: VR11{L)
VR12(R
|
j
<2>
Bias current
1 kHz, —30 dBs
(B)
output is ~2 dBs at
:
=
0
AAT | altemptelycand aglust Se Wet
10 kHz,
—30 dBs
X-85
playback level is identical
1 kHz, and record and
playback 1 kHz and
10 kHz alternately
| Deck B: VR9(L) VR10(R)}
between them
33
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