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Mechanical Adjustments - Sony CDX-505RF/EXCD-3RF Service Manual

Compact disc changer system
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2. MECHANICAL ADJUSTMENTS

Elevator Height (Address) Adjustment
Note: This adjustments is necessary when the system controller
(IC302), variable resistor (RV301), slider (R), slider (L), or
chassis (ELV) was replaced for any repair.
Connection:
power supply
master unit
+
GND
comb tooth at address 5
RV301
BUS cable
CDX-505RF/EXCD-3RF
comb tooth at address 6
elevator shaft
A
B
– 6 –
Adjustment Method:
1. Connect this set to the master unit (e.g. MDX-C670/C670RDS),
load a disc magazine, and place the set vertically as shown below.
2. Connect the regulated power supply to the master unit, and turn
the power on.
3. Press the DISC button on the master unit and select DISC 5.
4. At this time, if the elevator shaft does not position between comb
teeth A and B at addresses 5 and 6 as shown below, adjust the
following.
5. Press repeatedly the DISC + and – buttons on the master unit so
that the elevator shafts moves from address 6 to address 5, or from
5 to 6. At this time, adjust RV301 on the main board so that the
elevator shaft positions smoothly between comb teeth A and B.
6. Further, place the set horizontally and make same adjustment as
mentioned above.
7. After adjustment at addresses 5 to 6 is finished, check all opera-
tions from addresses 1 to 10 with the set placed vertically and
horizontally respectively to confirm that the elevator shaft posi-
tions in a range between comb teeth A to B.
comb tooth at address 6
A
B
OK
NG
elevator shaft
comb tooth at adress 5

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