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29

A

1

Rotate the lever (SW)

in the direction of the arrow.

3

2

floating screw
(PTPWH M2.6)

4

holder (BU) ass’y

3

connector
(CN151)

qs

CD mechanism deck
(CDM55A-21BD53)

1

two claws

qa

two claws

2

loading panel

9

screw
(BVTT3 

×

 6)

0

5

two screws
(BVTT3 

×

 6)

8

base (MDM) section

6

5

two screws
(BVTT3 

×

 6)

7

wire (flat type) (21 core)
(CN1002)

4

wire (flat type) 
(31 core) 
(CN107)

30

2

belt (CDM55)

B

3

Pull the tray (CDM) pushing 

B

.

4

two screws
(BTP2.6 

×

 6)

5

LOADING board

1

Rotate the gear(B) in
the direction of arrow 

A

.

A

5

base unit
(BU-21BD53)

4

two insulators
(BU21)

8

holder
(55-BU21)

3

6

two cone coil springs

7

shaft (BU21)

6

two cone coil springs

4

two insulators
(BU21)

1

three floating screws
(DIA. 12)

2

floating screw
(PTPWH M2.6)

31

2

lever (SW)

1

torsion spring

6

gear (B)

3

spacer (55)

4

pulley (LDG)

5

gear (A)

7

roller

8

cam (CDM55)

32

About “R”
As this unit has only a few buttons, some operations require the use of remote commander (RM-S5EN/provided with unit: 1-476-086-21)
buttons. These operations are indicated as “R” in this manual.
Example:

MENU/NO “R”

...Press the 

[MENU/NO]

 button of the remote commander.

Incorrect operations may be performed if the MD test mode is not entered properly.
In this case, press the

I/1

button to turn the power off, and retry to enter the MD test mode.

• As loading related operations will be performed regardless of the test mode operations being performed, be sure to check that the disc

is stopped before setting and removing it.
Even if the 

[MD    ]

 button is pressed while the disc is rotating during continuous playback, continuous recording, etc., the disc will not

stop rotating.
Therefore, it will be ejected while rotating.
Be sure to press the 

[MD    ]

 button after pressing the

MENU/NO “R”

button and the rotation of disc is stopped.

• Continuous recording mode (CREC 2MODE)
• Laser power check mode (LDPWR CHECK)
• Laser power adjustment mode (LDPWR ADJUST)
• Comparison with initial Iop value written in nonvolatile memory (Iop Compare)
• Write current Iop value in read nonvolatile memory using microprocessor (Iop NV Save)
• Traverse (MO) check (EF MO CHECK)
• Traverse (MO) adjustment (EF MO ADJUST)
• When pressing the 

[REC/REC IT]

 button.

The following are two methods of entering the test mode.
Procedure 1: 1. Press the

I/1

button to turn the power on.

2. Press the 

[FUNCTION]

 button to set the MD function.

3. Press three buttons of

M >

, 

[PLAY MODE]

, and 

[MD    ]

 simultaneously.

When the test mode is set, “[Check]” will be displayed. Pressing the

.  m

 “R”

or

M  >

 “R”

button between the

following three groups; ···Tt [Check] Tt [Service] Tt [Develop] Tt ···.

Procedure 2: 1. Press the

I/1

button to turn the power on.

2. Press the 

[FUNCTION]

 button to set the MD function.

3. Press three buttons of

. m

, 

[PLAY MODE]

, and

x

(MD) simultaneously.

When the test mode is set, “TEMP CHECK” (C12) will be displayed. By setting the test mode using this method, only the
“Check” group of procedure1 can be executed.

Do not use the test mode in the [Develop] group.
If used, the unit may not operate normally.
If the [Develop] group is set accidentally, press the

MENU/NO “R”

button immediately to exit the [Develop] group.

Press the 

[REPEAT]

 button to display “Initialize”, then release the MD test mode.

All operations are performed using the

. m

 

“R”

,

M >

 

“R”

,

ENTER/YES “R”

and

MENU/NO “R”

.

The functions of these buttons are as follows.

Function name

Function

 . m

 “R”

, M >

 “R”

buttons

Changes parameters and modes

 

ENTER/YES “R”

button

Proceeds onto the next step. Finalizes input

 

MENU/NO “R”

button

Returns to previous step. Stops operations

Z

Z

Z