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(5)
(6
~—
(7
—
(8
—
(9)
(10)
Check the voltage at pin no. 17 of 1200.
Check the voltage varies between about 0 to 4V when the indicator does not stop.
When the voltage varies: Go to (7).
Adjusting the transformer T201.
if the amplitude does not vary: Replace components in order of C267 to C273, T201 and IC200.
Measure the waveform at pin no. 29 of IC300.
Check that the waveform as below appear when the indicator passes the receiving channel.
— 64.0 psec —»
Measure the waveforms at pin no.21
to 23 of IC300.
Check the waveforms as below appear when the indicator passes the receiving channel.
— 64.0 psec
When the waveforms appear: Go to (12).
Measure the waveforms at pin no. 18 of IC300.
Check the waveforms as below appear when the indicator passes the receiving channel.
3.4V
—
64.0 usec k—
When the waveforms appear: Go to (12).
Measure the waveforms at pin no. 22 of 1C200.
Check the waveforms as below appear when the indicator passes the receiving channel.
0.8V
k— 64.0 psec—
if the waveforms do not appear:
Check a line cut from pin no. 18 to pin no. 22 of IC200, and poor
soldering on chip resistors, etc.
pny
OC eae
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