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4.9
Attention when pick-up is exchanged
(1) Flexible wire, pick-up spring, switch actuator, and lead
spring are removed from an old pick-up (broken the one).
Guide:
Flexible wire, pick-up spring and switch actuator,lead
spring are removed without each decomposing while as-
sembled.
(2) The above-mentioned parts are installed in a new pick-up
(non-defective article).
(3) A flexible wire is inserted in the connector which has taken
side with the pick-up, and solder is put up to short land part
"a" two places on a flexible wire.
(4) The electrostatic breakdown protection circuit attached to
the pick-up is cut.
ATTENTION:
Please cut the electrostatic breakdown protection
circuit attached to the pick-up after solder is put up
to two places on a flexible wire short land part "a" of
the insertion of a flexible wire this time in the con-
nector without fail.
The procedure might be mistaken and if solder has
not surely adhered to two places on a flexible wire
short land part "a", the laser diode in the pick-up be
destroyed again.
(5) The pick-up is installed in the traverse mechanism.
(6) A flexible wire is connected with connector
lay board by installing the traverse mechanism in the load-
ing mechanism.
(7) Solder in two places on a flexible wire in part "a" is re-
moved.
ATTENTION :
Please remove solder in two places in part "a" after
connecting a flexible wire with connector
relay board without fail this time.
When the procedure is mistaken, the laser diode in
the pick-up might be destroyed.
Please remove solder in two places in part "a" surely.
Please make the switch on a relay board into the
"SHORT" side beforehand.
After mounting a mechanism assembly in a main
part, please make a switch into the "OPEN" side after
connecting the card wire from a relay board to the
connector
CN101
on a servo control & signal output
terminal board.
Electrostatic breakdown
CN1
on the re-
CN1
on the
Electrostatic breakdown
CN1
Switch actuator
Lead spring
Pick-up spring
Flexible wire
protection circuit
protection circuit
Switch
Relay board
Pick-up
Flexible wire
Connector
Short land
part "a"
Cutting part
Short land
part "a"
(No.XA004)1-21
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