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Sony APR-5000 Technical Service page 153

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6.5
.
5.6
Supply
Reel Motor RTSA
Adjustment
Procedure
Perforin the check procedure for the supply reel motor
RTSA
signal
(
Section 6.5
.
5.5
)
.
STEP 1
o
v
'
STEP 2
Adjust
RV
1 on the
supply
RTS board so that the RTSA
signal
seen at
pin
2 of IC 13 has a duty cycle of
50 %
.
(
refer to
Figure
6
-
10 )
6.5
.
5.7
Supply
Reel Motor RTSB Check Procedure
STEP 1
Perform STEPs 1
through
6 of Section 6.6
.
5.1
.
Connect the 14
-
pin
DIP
Clip to
IC
13
on the TIB board
.
( Refer
to Figure 6
-
9 )
STEP 2
STEP 3
Connect the
positive
lead of the
oscilloscope probe
to IC 13
pin
4
via the
DIP
Clip
.
This is
the
supply
reel RTSB
signal
.
Adjust the
uncalibrated
sweep so
that one
cycle
of the waveform equals ten horizontal
segments
( full
scale
)
.
STEP 4
Ensure that the
supply reel
RTSB
signal
has
a duty
cycle
of 50
%
.
If
the
duty cycle
is not
50 %
,
proceed
with Section 6.5
.
5.8
Supply
Reel Motor RTSB
Adjustment
Procedure
.
rr
6.5
.
5.8
Supply
Reel Motor RTSB
Adjustment
Procedure
STEP 1
Perform the Supply Reel Motor RTSB Check Procedure
(
Section 6.5
.
5.7
)
.
STEP 2
Adjust
RV 2
on
the
supply
reel RTS board so that
the
RTSB
signal
as seen at pin 4 of
IC 13 of the TIB board
has a
duty cycle
of 50 %
.
(
refer to
Figure 6
-
10
)
6.5
.
5.9
Take
-
up
Reel Motor RTSA Check Procedure
STEP 1
Perform STEPs 1
through
6 of Section 6.5
.
5.1
.
STEP 2
Connect the 14
-
pin
DIP
Clip
to IC 13 of the
TIB
board
,
(
refer to
Figure 6
-
9
)
STEP 3
Connect the
positive
lead of the
oscilloscope probe
to IC 13
pin
6 via the
DIP
Clip
.
This is
the take
-
up
reel motor RTSA
signal
.
Adjust the uncalibrated
sweep
of the
oscilloscope so
that one cycle of the
waveform
equals ten horizontal
segments
(
full scale
)
.
6
-
22

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