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11. ADJUSTMENTS
11.1 MECHANICAL ADJUSTMENTS
.
Before commencing any mechanical adiustments, clean the capstan, pinch roller, idler, and belts
with a cloth dipped
little alcohol.
o Unless specifically indicated, the following adiustments refer to both deck A ahd B.
r n a
1. Pinch Roller Pressure Check
o Use tension gauge (GGK'0471
3. Tape Speed Adiustment
'Adiust at beginning of tape
Mode
Specifications rating
C o n d i t i o n s
Mode
Test tape
Adiustment
location
S p e c i f i c a t i o n s
r a t i n g ( p l a y b a c k
f r e q u e n c y l
P L A Y
3 5 0 i 1 0 0 9
L e t t h e p i n c h r o l l e r s l o w l y a P -
proach the capslan, and read the
t e n s i o n g a u g e v a l u e w h e n t h e
oinch roller commences to
rofate.
P L A Y
STD-3O1 (3 kHzl
3 0 1 0 H z t 5 H z
.
W i t h t h e p i t c h c o n t r o l V R ( V R 2 0 1 ) s e t t o t h e p h y s i c a l c e n t e r
p o s i t i o n , a d i u s t V R 5 0 1 -
a
É-epuce tne pincn roller pressure spring (AXV-066)
i Il
I |
"l
rtp" speed ADJ
o @
GI
VR50l
\ @
\ @
o
Tension gauge
( P a r t N o . G G K O 4 7 )
P i n c h r o l l e r
Capstan
P i n c h r o l l e r a r m
Pinch roller pressure spring (Part No. AXV{66)
4. Tape Speed Adiustment
' Adiust at beginning of tape
Mode
Test lape
Adjustmenr
location
S p e c a i t c a t l o n s
r a t i n g ( P l a Y b a c k
frequency I
P L A Y
sTD-301 (3kHz)
3 0 1 0 H 2 i s H z
.
The deck B tape speed rnust not deviate from the deck
A tape
speed bY more than t SHz.
2. Reel Base Torque Check
. use torque meter (GGK'o561
Mode
Take-up reel base torque
rati ngs
Supply reel base torque
ratings
P L A Y
35g.cm - 709'cm
l g . c m - 5 9 . c m
F F
70g.crn - 140g.cm
1g.cm - sg.cm
R E W
l g . c m - S g . c m
70g.cm - 1409'cm
* B a c k - t e n s i o n l o r q u e
.
lf the speciTied torque ratings are not satisfied,
replace the suPPlY reel base ass'Y,
take'up reel base ass'Y,
d r i v e a r m f u l l a s s ' Y .
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