Sanyo MCD-Z150F Service Manual page 6

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i
REPLACEMENT OF CD MECHANISM
c. Replacement and lubrication of the pickup
Before replacement of the pickup, be sure to carefully read the
section regarding the pickup
when the unit is moved or
transported.
(1)
.
(2)
(3)
Remove a pickup rail (CM2) with a driver from the bottom of
chassis.
When removing or inserting the pickup rail from or into chassis,
take care not to exert excessive force.
When the pickup is reconditioned of replaced, be
sure to wipe
the rails clean and also apply a coating of FLOIL (G-474B) to
there entire circumference and eritire length.
When applying the grease, do not allow any grease to adhere
to any other parts.
Pass the pickup rail (CM2) throuc$ the new pickup (CM7).
The pickup P. W. Board
pattern is 'shorted=, as shown in the
figure, so that the new pickup will not be susceptible to the
effects of static.
Set the pattern to "open= after the pickup has
been replaced.
I
@
@
I
CY2—T———+5
%-C'3
CM6
/
CM2
-
i"\j
'WI
7Z9.
,CM1-I
1
1
d. Checking the action of the C'fl mechanism
e. Replacement
of the
sled motor
(1)
Disconnect the socket
(for the sleet motor pawer supply) from
(1) Remove two screw (CY1 ) and remove the sled motor (CM3).
the P.W. Board.
(2) Apply a voltage of DC 2.OV to the?sled motor's terminal.
(3) Measure the current
during
sled motor operation.
The direction of movement of the pickup (outer groove or inner
groove) can changed by changing the battery polarity.
c
(4) The current during sled motor adicm varies according to the
positional relationship of gear (C&M5, CM6).
(5) If the current exceeds 40mA, remmve the gears (CM5, CM6).
(6) Apply a small amount of a FLOIL @-474B) bonding materials
to the shaft.
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