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Rs.pclo
I
Proparallons
T6sl SotuD
T@18 A Ji06
MeasunnO
lnslrum6nls
1.
CD play€r &
CO
2
OCC
Blenk
t.p6
(nFK2O(B3)
1. Osclllosope
(3OMHz
or
hlCh60
'ir-
F,G7
UO
2,
OPTIMUM DCC RECORDING CURRENT ADJUSTMENT (READ/WRITE
P.C.B.)
.
Conneol tho
C0
playol output
lermlnsl wllh fhe
DCC
rocordlng
iominal
(aiih€r anelog
lnpul, dlgital
input, or
opllcal
inpul).
Record
th€
CD
sound
onlo lhe
DCC
Blank tapo
(RFlgdl3il).
Thls recordlng
givo3
A-ilme.
lHow to do A.tlmo
ocordlngl
o
@
Pr.!s
REW
lo ,rylnd
thr llpe
to thc
!t!rt
po!ltlon
R
o
DCC Blank
Tape(RFKzoo3:l)
o
16
F9
6jtumu6
dnd
indicdr
d
h.l
ot FPC
Flg.
17
Fig.
15
.
Adluslment
Steps
(f)
Put
the unit in
REC mode
using en
unrsordod
section
of
the
DCC
Blenk lape
(RFKZoogt).
(2) Adlust polentiomotsr
R167
to
obtaln the
optimum
voltage on thg
oulput
lsvsl ot
J15l
t
How to
llnd lhs
opllmum vottags
The blas
current
indiceted
on lh€
beck
ot the
FPC
ol
each head is lound using lhe
lollowlng
lormula;
v=txF151
(120)
tElmpiaT
When
lhe
blas current ls 160mA:
V=160mA
x
12O= !920mV
Y:5(hv
Xll
0!8
PreO€:Xl
0
Tho blaa
currant
ig
dllt€r€nl lor oach
hoad
-lo-
Orcillacop.
lr-l
@-
ff"xl
-o
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