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Teac MT-20D-IO - Page 77

Teac MT-20D-IO
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(15)
TPi7,
18 (GND)
PCBA
Drive
Control
These
points
are
connected
to
0
v.
(16)
TP19
(output
of
encoder
preamplifer)
PCBA
Drive
Control
Test
point
for
measuring
the
output
of
the
encoder
preamplifier.
TP19
is
used
to
check
the
operation
of
the
encoder.
Since
TP19
is
the
test
point
used
during
manufacturing
of
MTU,
it
is
not
used
for
maintenance
usually.
(17)
TP20
(servo
output)
PCBA
Drive
Control
Test
point
for
measuring
the
servo
output.
TP20
is
used
to
check
the
operation
of
the
servo
circuit.
Since
TP20
is
the
test
point
used
during
manufacturing
of
MTU,
it
is
not
used
for
maintenance
usually.
(18)
TP21
(output
of
solenoid
drive)
PCBA
Drive
Control
Test
point
for
measuring
the
output
of
the
solenoid
drive.
TP21
is
used
to
check
the
operation
of
the
solenoid
driver.
Since
TP21
is
the
test
point
used
during
manufacturing
of
MTU.
it
is
not
used
for
maintenance
usually.
(19)
TP22
(RD
output)
PCBA
Drive
Control
Test
point
for
measuring
the
RD
(Read
Data)
output.
TP22
is
used
to
check
the
operation
of
the
read
circuit.
Since
TP22
is
the
test
point
used
during
manufacturing
of
MTU.
it
is
not
used
for
maintenance
usually.
-
365
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