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13

2

Remove two solders of
the sled motor lead wires
(M101).

2

Remove two solders of
the chucking motor lead wires
(M103).

2

Remove two solders of
the spindle motor lead
wires (M102).

6

RF board

1

main flexible board
(CN101)

3

two screws
(PS2 

×

 4)

5

screw
(PS2 

×

 4)

1

OP flexible board
(CN102)

4

heat sink

2

sled motor complete assy
(M101)

1

screw
(P2 

×

 2.2)

14

9

detent spring (sled)

8

screw
(P2 

×

 3)

2

two screws
(P2 

×

 3)

5

washer
(DIA. 1.2)

6

gear (SL2)

3

spring (sled front point)

7

bearing (sled) assy

4

Lift up the bearing (sled) assy in the
direction of arrow 

A

 and remove it from

the shaft (sled feed) assy.

0

shaft (sled feed) assy

1

OP flexible board

A

qa

optical pick-up (KSS-720A)

1

tension spring

5

Open the main chassis assy
in the direction of arrow 

B

.

2

Move the slider (6R) fully in the 
direction of arrow 

A

 to move the

chassis (EV) assy down.

6

shaft (EVGR)

7

two shafts (EVGL)

4

two type-E stop rings 2.0

4

type-E stop ring 2.0

A

B

8

chassis (EV) assy

3

three screws
(PTT2 

×

 3)

15

4

lever (CHK.L) assy

3

Move the lever (CHK.L) assy
fully in the direction of arrow 

A

.

3

Move the lever (CHK.R) assy
fully in the direction of arrow 

A

.

1

screw
(P1.7 

×

 2.2)

leaf spring (D retainer R)

2

joint (CHK)

5

Remove the lever (CHK.R) assy pushing down
the leaf spring (D retainer R) in the direction of arrow 

B

.

A

B

A

1

Turn the gear (LE2) assy
fully in the direction of arrow 

A

.

5

Open the chassis (EV) assy
in the direction of arrow 

B

.

4

type-E stop ring 2.0

6

shaft

6

shaft

3

leaf spring (FOP)

7

shaft

8

chassis (OP) block service assy

B

A

2

screw
(P2 

×

 1.8)

16

GND

+

BUS cable

compact disc changer

master unit

power supply

(DC 14.4 V)

This adjustments is necessary when the system controller (IC301),
variable resistor (RV302), lever (CHK.L) assy, lever (CHK.R) assy,
or chassis (EV) assy was replaced for any repair.

Adjustment Method:
1. Connect this set to the master unit (e.g. MDX-C7970/C7970R),

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 6.
4. Adjust the variable resistor RV302 so that the reference holes

of the slider (6L) and of the chassis (6B) meet within an error
of ±0.15 mm when the tray is loaded at address 6.

RV302

slider (6L)

slider (6L)

(reference hole)

slider (6L)

(reference hole)

chassis (6B)

chassis (6B)

(address 6 hole)

0.15mm

0.15mm