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4-2.
ELECTRICAL
ADJUSTMENTS
1. Perform adjustments in the order given.
2. Use YEDS-1
disc unless otherwise indicated.
3. Use the oscilloscope
with more than 1OMQ im-
pedance,
CDP-502ES/620ES
Adjustment Mode
1, Connect main amp board test point TP701 (TEST)
and GND.
:
This is to prevent the disc table from opening
even though pits are not read, by making mie
computer IC701 pin (4) low,
2. Turn POWER switch on,
(To reset micrcomputer.)
After adjustment, remove the lead wire connecting
test points TP701 (TEST) and GND.
Adjustment Location:
main board
TP701
TEST
ee
Connect
test points
TP701 (TEST) and GND.
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