Yamaha CDR-D651 Service Manual page 7

4. Removal of Pick-up Mechanism on CD drive side
a. While pushing the claw (0) to the left, release the pin
on the left side of the Pick-up Mechanism Unit from the
CD mechanism chassis. (Fig. 5)
b. Release the pin on the right side by sliding the Pick-up
Mechanism Unit toward the left, and then slide the Pick-
up Mechanism Unit by moving it rearward.
c. Disconnect the flexible flat cable (A) connected to the
pick-up mechanism unit.
d. Remove the pick-up mechanism unit from the CD
mechanism chassis.
5. Removal of CD Drive Mechanism Unit
a. Remove 4 screws (B). (Fig. 6)
b. Disconnect 2 connectors. (Fig. 7)
c. Disconnect the flexible flat cable (A) connected to the
pick-up mechanism unit. (Fig. 5)
d. Remove the CD drive mechanism unit from the main
chassis.
6. Replacement of CD-R Mechanism Unit Belt
a. Remove the Tray of the CD-R Mechanism Unit. (See
Step 3.)
b. Remove the belt (D) visible from the front with
tweezers or the like. (Fig. 8)
c. Using alcohol, clean the belt contacting section of the
pulley.
d. Using tweezers or the like, install a new belt to the
pulley A first and then B as shown in Fig. 8. At this time,
use care so as not to allow the belt to be twisted or
grease to attach to it.
7. Removal of CD-R Drive Mechanism Unit
a. Remove the MAIN PCB.
b. Remove 4 screws (C). (Fig. 6)
c. Remove the CD-R drive mechanism unit from the main
chassis.
8. Installation of Tray (applicable to both CD drive and
CD-R drive models)
a. Slide the slide gear (E) to the right to attain the state
with the pick-up mechanism lowered. (Fig. 8)
b. Load the tray from the front.
c. Reversing the procedure for unloading the tray, make
the gear at the front of the drive turn to the left so that
the pick-up mechanism is raised fully.
0
B
B
B
Connector
A A
D
CDR-D651
A
Fig. 5
C
C
C
Fig. 6
Connector
Fig. 7
B B
E
Fig. 8
6