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ADJUSTMENT
OF DECK
& TORQUE
Amplifier
Adjustment
* lnputterminal:
LINE IN
Item
Deck
Test
Input'
DolbySw
output
Adjust
Tape
Point
Remarks
1
Head
TAPEA
VTT738
-
OFF
Azimuth
Adjust so as 10kHz
output
Azimuth
TAPEB
OS(T
Screw
become
maximum.
TAPEA
TCC130
SVR502
2
Playback
OFF
TAPE
SVR602
Adjustment
so as TAPE
OUT
Level
TAPEB
200rrW/m
-
OUT
SVR501
output
become
0.54V.
SVR601
3
Rec / Play
TAPEB
AC224
1kHz
Level
-19dB
OFF
y:;
g:::;
Adjust to obtain 0.4V on VTVM.
4
Rec I Play
TAPEB
lKHz(-30dB)
TAPE
SVR504
Adjust to obtain same output of
Frequency
AC224
10KHZ(-30dB)
ON
OUT
SVR604
1kHz and 10kHz.
Note.
1.
2.
3.
Perform BIAS alignment by SVR 504,604
so as No.3 satisfy spec of all item. Perform output alignment by
SVR503,603.
During alignment, measurement
Beat cancel SW is at 1 condition fundamentally,confirm.
fUP frequency
characteristic, dolby effect also by 2 condition , when ship out set SW to 1 position.
Fix to MAIN VR the position that SP output playing VTT722 is about 2.83V-1 OdB (2.83V = 1W output).
[
R-ch ~SVR64)2
-
TAPE
A
L- ch ~SVR502
[1
R-ct4fsvR601
TAPE B
tiL-c~SVR501
,
I
PLAY
GA1 N
ADJUSTMENT
.0
SVROO1
?
+
I
a
CNOO
Q,
nfT0T03Y5
~~'
SPEED
TAPE
SPEED
~-!~-~!~ch,
TEST
POINT
ADJUSTMENT
BIAS
REC /PLAY
GAIN
ADJUSTMENT
ADJUSTMENT
Tape
Speed
Adjustment
Step
Speed
Deck
Test Tape
SVR
Tape
Counter
Remarks
1
Normal
TAPEA
MTT-lll
N
3000
? 5Hz
*
2
Heigh
TAPEA
SVROO1
TCW-211
-40-70Hz
*Memorize
the tape
speed on counter. Confirm that the speed of TAPEB
is in 40-70Hz
against TAPEA.
1.
Set the test tape(MTT-111
) to "TAPEA" deck.
2.
Adjustment to obtain the tape speed counter at Play of step 1.
3.
High speed adjustment should be made after normal speed adjustment.
4.
Set the TAPEB mechanism is record made with C-60 Blank cassette tape.
5.
adjustment should be made
at the ending portion of the tape.
6.
Set the Dubbing speed "HIGH".
7.
Set the testtape(TCW-211
) to "TAPEA" deck.
8.
Confirm the indication of the tape speed counter within 2 second after push the PLAY(TAPE A) and REC(TAPE B)
button.
Item
Take-up
torque
Back
tension
Pulley
tension
Test
cassette
PLAYTW211
1
PLAYIF.F:TW211
Driving
power
FFWD/REW;TW2231
REW:Torque
Gage
cassette: TW-2412
PLAY
30-60gr.cm
2-4.5gr.cm
>
6(Jg
F.FWD
55-120gr.cm
REW
55-120gr.cm
-4-
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