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Sony CDU31A Series Service Manual page 25

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i.
Press Pulley Ass'y removal
i·l.
Slide the Press Pulley Ass'y toward you and the
ass'y can be taken out. (Refer to Fig. 4-5 (f))
Press Pully Ass'y
Fig. 4-5 (f) Press Pulley Ass 'y Replacement
i-2.
Remove the hooks of Press (b) Pulley as shown in
Fig. 4-5 (g).
@--.....
IAI
Pully
dJ.---
Pully Yoke
$r-.....
181
Puly
Fig. 4-5 (g) Press Pul/eyAss'y Replacement
j.
Main Frame Ass'y removal
j-1.
Remove the hooks located both side of Main
Frame Ass'y, and take it out from the Case. (Refer
to Fig. 4-5 (h))
4-5-2 Installation
a.
Main frame Ass'y installation
a-1. Attach the hooks of Main Frame Ass'y to the
opening of the case.
b.
Press Pulley Ass'y installation
Note:
Apply molykote grease (EM-30L) (same quantity of
match tip) to the specified area of the case as shown
in Fig. 4-5 (c).
4-5
b-1. Put Pulley Yoke, Slider in order on the Press (a)
Pulley, then insert the hooks of Press (b) Pulley to
opening Press (a) Pulley and hang it.
b-2. Put the Press Pulley Ass'y on the drive and slide it
backward.
c.
Install the Optical Device to the UX Holder with three
Screws (with Stopper). (Torque force is 3 kgf•cm)
d.
Install the both arms of Optical Device Ass'y to the
Press Pulley Ass'y and place it in the drive.
e.
Install the both of the guide and install the Front Panel
the drive.
f.
Tray installation
f-1.
Insert Tray between guide and frame, lever while
lifting it a little, insert it completely.
Note:
If the lock release lever and the lock lever are
locked, release them as shown in Fig. 4-4 ( c ).
g.
Hook the Tension Springs to the tab of guide.
h.
Install the MA-1/MA-2 mounted board. (Refer to 4-4)
Note:
Before adjustment, check if the RF level obtains at
RFO terminal for later adjustment. (Refer to 5-2).
1.
Perform the electrical adjustment (Refer to 5-1)
j.
Perform the RF level (Laser power) and laser current
adjustment. (Refer to 5-2)
k.
Install the bottom plate ass'y. (Refer to 4-2)
Main Frame Ass'y
Fig. 4-5 (h) Main Frame Ass'y Removal ·

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