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122MKD
I
5-5-2 F,F.lREW TORQUES
1. Load a cassette torque meter in the cassette holder and measure
starting torque for both F.F. (fast forward) and REW (rewind)
operations with the tape wound close to end or rewound close to
beginning, respectively.
The reading should be:
F.F
.
torque (right reel table):
more than 55 g-cm
(more than 0.76 oz·inch)
REW torque Oeft reel table):
more than
80
g,cm
(more than 1.1 oz-inch)
5-8 TAPE SPEED
1. Connect a frequency counter to either one of OUTPUT jacks.
Fig. 5-11.
2. Depress POWER switch to ON.
3, Load a TEAC MTT·lll test tape containing a 3,000 Hz test tone,
then leave the deck for at least one minute to warm up the
capstan motor.
4. Playback the test tape, and make sure the following values are
obtained at the beginning and at the end of the tape.
(PITCH CONT SW: OFF)
Deviation.:
3,000 Hz±30 Hz
PITCH CONTrol range
:
More than
±12%
for the speed
when
(PITCH CO NT SW: aN) PITCH caNT is set to off.
5.
If
the speed
is
out of the limits, adjust
as
follows:
a) Clean the tape path and
check
the pinch roller pressure and
take·up torque.
b) If they are normal, push PITCH CONTrol (off), and repro
duce approx
.
the mid portion of the test tape_
c) Adjust the
speed
trim pot R502 (refer to Fig. 3·1) provided
on the rear side of the PITCH CONTrol switch using a
small
"-" driver with the handle completely insulated from the
blade to obtain a 3,DOO Hz ±5 Hz reading on the frequency
counter.
oscillator
0
~~
0
attenuator
Lt~~~o
LINE IN
Fig
,
5-"
- 16
5-5-2 F.F
/
RED
I--JV?
1.
h1::';1
1--'
;i;)[,,;)1,=h1::
' ; 1
1--.1--)[,,:7. J.
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F.F.C!'f!i!IJ)
illIJfF
O)
~mJJ r)["
:7 '2:-7-7'0)~rtlJilI<-C,
~
t:..
RWD milftO)jfj;ruJJ
r
)[,,:7
'2:-T
-
7'O);IJ;!tIJ~ili
<
c
t-
h
i"hi!l'J!:E9~0
m~'ii;,:
O)
iIDl)c9
0
f .f. r)[":7
(;t]
I) -
)["-EJ
)
:
55g'
em
0...t
RWD
r)[":7
(b::
I)
-
)["-EJ) :'
BOg
·
em
P)...t
5-6
T--:i~~
1.
mJi1ii:~h
'/
/;)1
' 2 :- OUTPUT:';
t,
';1
:7
'=~*'t9
6
(~5
-11
ts:~)
2.
POWER
A'"
';1
T'2:-¥P
l-C
:;t
/
'=96
0
3.
.f-
t"
7'
A;)1
/
•
t -
;)1
'2:-@J$j;~
i:t
'/
,t
-
~
/
:7'7
';1
'19
~
t:..
66
1= TEA
C
MTT
- III
T
A
I-- •
T
-
'1'2:-li<-C
Iv
l-C,
Y
<
C
b-7tFEIl-'t
0)
~
~
1=
l-C
to
<0
4.
TAI--'T-'1'2:-~~~i:t, T-'1O);IJ;!tIJ~c.rtlJ~-C
'f ii2
0)
@:;I)q~
G
h
~
;I)
'
~1fill9
00
{ijj~:
3,OOOHz±
30
Hz
PITCH
CON
T
A' "
';1
T OFF
t"
;1
T
.
:::1
/
r
0
- )
[,.
Q}~~lID
CP lTCH CON
T
A'"
';I
T
ON)
:
PITCH
CON
T
:;t 7
MjO)iill!Jt'=j:'i
l-C
±
12%
0J:.
5.
b lilEfi:;I)<flj[ffi;l)'
Gnh
-Cl, \
6
JJil
~I;t
,
i;,:O)
iilllJ
fJWl\~
9 ~o
a.
T-'1~ft~'2:-~~l-C,
~'/T,o-5ff
.~
,T'"
:7 7
'J
'1'
r
)[":7
' 2 :- T
J.
;I
:7
960
h.
-'to)t5~;I)<iI*,-C;})hI:C
~';lT'
:::1
'/
l--o-)[,.~:;t7
i
=~i:t
,
77..
I-- •
7-'10)7-'1~~0)r:j:liJc:~jff
~
9
60
C,
mJitl~h
'/
/;)1
;I)<3,OOOHz±
5Hz~
jf;9
J:.
-)
1=
t'
';I
T
•
::J
'/
r
0
- )[,. •
A'"
';1
T
O)
~ffilli
:.
J)
6 A
t'
-
F
-'¥~:lEIJlm
R502
(12{)3-1~ml.)
H~Jl-C~~960 ~f!f':.(iWW]]
*;1)'
G5Ci:I:'~~~
h
-C
l,
\
6IJ\~<'" -j-
A
.
r 5..,
I
'~
,Elj
l,\o'::'c
o
frequency counter
I
~ oJ
DECK
under test
wow/flutter
m
eter
ETI
OUTPUT
0
0
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