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Teac MT-20D-IO - Page 81

Teac MT-20D-IO
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(25)
TP6
(CPU
clock)
PCBA
Interface
Control
Test
point
for
measuring
the
CPU
clock
signal.
TP6
is
used
to
check
the
CPU
clock
frequency.
TP6
Frequency
=
3.07
MHz
(a)
"90
ips"
TP6
Frequency
=
1.5
MHz
(b)
"30
ips"
Fig.
348 Example
of
waveform
at
TP6
(26)
TP9
(read
data
pulse
W)
PCBA
Interface
Control
Test
point
for
measuring
the
r~ad
data
pulse
W
signal.
TP9
is
used
to
adjust
the
reference
timing.
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