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9-6 . AUDIO
H
R
AD
Α
D
.πτ SΤ HM
9-6-1 . Aud i o
H
ead
H
e ight Adj u stmen t
Tool :
Ali gnmen t ta p e, RR 5-3S B
VTVM o r Osc ill osco p e
Preparation :
(1) Conn ect t h e VT V M
o
r osc ill o-
sco p e
to AUDI O OUT
C
H -1
and
CH -2 te rmin a l s .
(2) Pl ay back
t h e
au di o
po rt i o n
o
f t h e a li gnm en t tap e .
1
kHz
C
h ec k proced ur e :
(1) Ch ec k
t h at
t h e
CH -1
ou tput
lev e l
in c r ease
i
s
less
than
0 .5 d B
w
h e n pr ess in g down at
Α .
If n ot,
p
erf o rm th e ste ps
(1) a n d (2) o f t h e ad j ustme nt
proced ur e .
(2) C h ec k
t
h at
t h e
CH-2
o u tput
lev e l
in c r ease
is
less
than
0 .5 dB
w
h e n pu s hing up at Β .
If n ot, pe rf o rm t h e ste p s (3)
and
(4)
o f
t
h e
ad
j
u st me nt
proced ur e .
Ad
j
u stmen t
p
rocedure :
(1)
L
oose n
t
he
loc king
sc r ew a nd
turn
3
ad
j
u st ing
scr ews
of
e
xact ly
e
qu a l
a
mo un t in coun te r-
c l oc k w i se d ir ect i o n
(2) Tigh te n
t
h e loc kin g sc r ew a nd
chec k h e i g h t aga in .
(3)
L
oose n t h e
loc king
sc r ew a nd
turn
3
ad j u st ing
scr ews
of
exac ly
e
qu a l
a
m oun t in c l oc k-
w i se d ir ect i o n .
(4) Tigh te n t h e loc kin g sc r ew a nd
chec k he i g h t aga in .
loc
k
ing sc
r
ew
Sp
ec. :
"
CH-f
level i
n
c
r
ease is less t
h
a
n
0.5
dB
w
h
e
n pr
essing down at (~) p o
r
tion.
" C
H
-2 level i
n
c
r
ease is less t
h
a
n
0.5
dB
w
h
en pushing up at © p o
r
tion .
9-22
BVU
-800(
U
/C)/ΡΜ
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