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17

1. Entering the continuous playback mode

1

Set the disc in the unit. (Whichever recordable discs or discs for playback only are available.)

2

Rotate the  AMS  knob and display “CPLAY1 MODE”(C34).

3

Press the  YES  button to change the display to “CPLAY1 MID”.

4

When access completes, the display changes to “C = 

 AD = 

”.

Note : The numbers “ ” displayed show you error rates and ADER.

2. Changing the parts to be played back

1

Press the  YES  button during continuous playback to change the display as below.

When pressed another time, the parts to be played back can be moved.

2

When access completes, the display changes to “C = 

 AD = 

”.

Note : The numbers “ ” displayed show you error rates and ADER.

3. Ending the continuous playback mode

1

Press the  MENU/NO  button. The display will change to “CPLAY1 MODE”(C34).

2

Press the  AEJECT  button to remove the disc.

Note : The playback start addresses for IN, MID, and OUT are as follows.

IN

40h cluster

MID 300h cluster
OUT 700h cluster

1. Entering the continuous recording mode

1

Set a recordable disc in the unit.

2

Rotate the  AMS  knob and display “CREC1 MODE” (C35).

3

Press the  YES  button to change the display to “CREC1 MID”.

4

When access completes, the display changes to “CREC1 (

)” and  

  lights up.

Note : The numbers “ ” displayed shows you the recording position addresses.

2. Changing the parts to be recorded

1

When the  YES  button is pressed during continuous recording, the display changes as below.

When pressed another time, the parts to be recorded can be changed.   

  goes off.

2

When access completes, the display changes to “CREC1 (

)” and  

  lights up.

Note : The numbers “ ” displayed shows you the recording position addresses.

3. Ending the continuous recording mode

1

Press the  MENU/NO  button. The display changes to “CREC1 MODE”  (C35) and  

  goes off.

2

Press the  A  button to remove the disc.

Note 1 : The recording start addresses for IN, MID, and OUT are as follows.

IN

40h cluster

MID

300h cluster

OUT

700h cluster

Note 2 : The  MENU/NO  button can be used to stop recording anytime.
Note 3 : Do not perform continuous recording for long periods of time above 5 minutes.
Note 4 : During continuous recording, be careful not to apply vibration.

“CPLAY1 MID” t “CPLAY1 OUT” t “CPLAY1 IN”  

“CREC1 MID” t “CREC1 OUT” t “CREC1 IN”  

18

G

x

M

m

REC MODE

PLAY MODE

LEVEL/DISPLAY/CHAR

A

REPEAT

Sets continuous playback when pressed in the STOP state. When pressed during continuous

playback, the tracking servo turns ON/OFF.

Stops continuous playback and continuous recording.

The sled moves to the outer circumference only when this is pressed.

The sled moves to the inner circumference only when this is pressed.

Switches between the pit and groove modes when pressed.

Switches the spindle servo mode (CLV S y CLV A).

Switches the displayed contents each time the button is pressed.

Ejects the disc.

Exits the test mode.

Each time the  LEVEL/DISPLAY/CHAR  button is pressed, the display changes in the following order.
When CPLAY and CREC are started, the display will forcibly be switched to the error rate display as the initial mode.

Displays “TEMP ADJUST”, “CPLAY1MODE”, etc.

Displays the error rate in the following way.

C1 =         AD =   
C1 = Indicates the C1 error.
AD = Indicates ADER.

The address is displayed as follows. (MO:recordable disc, CD:playback only disc)
If the  LEVEL/DISPLAY/CHAR  button is pressed after pressing the
 PROGRAM  button, the display switches from groove to pit or vice versa.
h =         s =         (MO pit and CD)
h =         a =         (MO groove)
h = Indicates the header address.
s = Indicates the SUBQ address.
a = Indicates the ADIP address.

Note: “–” is displayed when the address cannnot be read.

Mode display

Error rate display

Address display

Auto gain display (Not used in servicing)

Detrack check display (Not used in servicing)

IVR display (Not used in servicing)

C1 error and Jitter display

(Not used in servicing)

AD error and Jitter display

(Not used in servicing)

19

Servo OFF

Tracking servo ON

Recording mode OFF

CLV normal mode

Tracking offset cancel OFF

Groove

Low reflection

CLV A

CLV UNLOCK

Servo ON

Tracking servo OFF

Recording mode ON

CLV low speed mode

ABCD adjustment completed

Tracking offset cancel ON

Tracking auto gain OK

Focus auto gain OK

Pit

High reflection

CLV S

CLV LOCK

G

X

REC

SYNC

L.SYNC

OVER

B/1

A-/REP

TRACK/(LP) 4/Calendar frame

DISC/LP2

SLEEP/SHUF

MONO

This test mode performs CREC and CPLAY automatically for mainly checking the characteristics of the optical pick-up.
To perform this test mode, the laser power must first be checked.
Perform AUTO CHECK after the laser power check and Iop check.

Procedure
1. Press the YES button. If “LDPWR                   ” is displayed, it means that the laser power check has not been performed. In this case,

perform the laser power check and Iop compare, and then repeat from step 1.

2. If a disc is in the mechanical deck, it will be ejected forcibly.

“DISC IN” will be displayed in this case. Load a test disc (MDW-74/GA-1) which can be recorded.

3. If a disk is loaded at step 2, the check will start automatically.
4. When “XX CHECK” is displayed, the item corresponding to XX will be performed.

When “06 CHECK” completes, the disc loaded at step 2 will be ejected. “DISC IN” will be displayed. Load the check disc (MD) TDYS-1.

5. When the disc is loaded in step 4, the check will automatically be resumed from “07 CHECK”.
6. After completing to test item 12, check OK or NG will be displayed. If all items are OK, “CHECK ALL OK” will be displayed. If any item

is NG, it will be displayed as “NG:xxxx”.

When “CHECK ALL OK” is displayed, it means that the optical pick-up is normal. Check the operations of the other spindle motor, thread
motor, etc.
When displayed as “NG:xxxx”, it means that the optical pick-up is faulty. In this case, replace the optical pick-up.

Display the software version.

Procedure
1. If displayed as “INFORMATION”, press the YES button.
2. The software version will be displayed.
3. Press the MENW/NO button to end this mode.

If the nonvolatile memory data is abnormal, “E001”/”MEMORY NG” will be displayed so that the MD deck does not continue operations.
In this case, set the test mode promptly and perform the following procedure.

Procedure
1. Set the test mode. (Refer to 4-2.)
2. Normally a message for selecting the test mode will be displayed. However if the nonvolatile memory is abnormal, the following will be

displayed. “INIT EEP?”

3. Press the STOP button and EJECT button together.
4. Rotate the AMS knob and select MDM-7A.
5. Press the AMS knob. If the nonvolatile memory is successfully overwritten, the normal test mode will be set and a message to select the

test mode will be displayed.

20

If malfunctions caused by Optical pick-up such as sound skipping are suspected, follow the following check.

Other faults are suspected.
Check the threading mechanism, etc.

Start

NG

NG

NG

OK

OK

OK

Laser Power Check

5-6-2.

(See page 23)

5-6-3.

(See page 23)

5-6-4.

(See page 24)

Iop Compare

Auto Check

Replace Optical pick-up or MDM-7A