Sony BVU-800 - 9-6. AUDIO HEAD ADJUSTMENT; 9-6-1. Audio Head Height Adjustment

9-6
. AUDIOHR ADΑD . πτS Τ
HM
9-6-1
. Aud i
o
H ead H e i gh t Adj u st m en t
Tool :
Ali g nm ent ta pe, RR
5-3S
B
VT VM
o
r Osc ill osco pe
Preparation :
(1) Co nn ect t
h
e VT V
M or osc ill o-
sco p
e
to
AUDI O OUT CH-1 a n d
C H -2 te rmin a l s .
(2)
Pl
ay bac k the a u dio
po rt i on of the a lig nm e n t ta pe .
1 kHz
C h
ec
k p roced ur e :
(1) C h ec k that the C H -1 o u t pu t
le v e
l in c r ease i s less t han
0 .5
dB
w
h e n pr ess in g dow n at
Α .

If
n
ot, p
e rf
o
r m t h e ste p s
(1) and (2) of t h e
ad j u stme n t
pr oced ur e .
(2)
C
h ec
k
t
h
at t
h
e
C H -2 o u t pu t
le v e l in c
r
ease
is less t h a n
0 .5
dB
w
h
e
n pu s hin g up at Β .
If
n
ot, pe
rfor m t he ste p s (3)
a n d (4) of t he ad
just m e n t
pr oced ur e .
Ad j u st m e n t p rocedure :
(1) L oose n t h e loc kin g scr ew a n d
t urn 3 ad j u st in g scr ews of
e x act ly e qu a l a m o un t incounte r-
c l oc k w i se dir ect i on
(2) Ti g h te n t he loc kin g scr ew a n d
c h ec k h e i g h t aga in .
(3) L oose n t h e loc kin g scr ew a
nd
t urn 3 ad j ust in g scr ews of
exacly e qu a l a m o un t in c l oc k-
w i se dir ect i o n .
(4) Ti g h te n t he loc kin g scr ew a n d
c h ec k h e i g h t aga in .
loc k ing sc r ew
Sp ec . :
" C H - f level
i n cr ease is less t h a n 0 .5 dB
w h
e
n pr essing down at (~) p or tion .
"
C H -2 level i n cr ease is less t h a n 0 .5 dB
w h
en pushing up
at © por tion .
9-22 BVU -800( U /C)/ ΡΜ