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25

Procedure:
1.

Press the  ?/1  button to turn on the power.(HCD-SE9)

2.

Press three bottons  Z 

TAPE

  ,  

TAPE 

X  and  

TAPE 

x  simultaneously, and  be in the state of version test mode.

Press [TAPE DIRECTION] button to select the key test mode.

3.

In the key test mode, the LCD displays “KEY 1”. Each time a button is pressed, “KEY #” value increases. However, once a button is
pressed, it is no longer taken into account. It is end at “KEY 19 OK”.

4.

To exit from this mode, press the  ?/1  button. (HCD-SE9)

There are 26 types of test modes as shown below. The groups can be switched by pressing the  

MD 

.

or  

MD 

>

  button. After selecting

the group to be used, press the [ENTER/START]

 

button. After setting a certain group, pressing the  

MD 

.

or  

MD 

>

  button switches

modes shown below.
Refer to “Group” in the table for details can be selected.
All items used for servicing can be treated using group [Service]. So be carefully not to enter other groups by mistake.

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 [MODE] button immediately to exit the [Develop] group.

• As operations related to loading 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  Z 

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  Z 

MD

  button after pressing the [MODE] button and the rotation of disc is stopped.

1-1. Recording Laser Emission Mode and Operating Buttons

• Continuous recording mode (CREC 2MODE) (C37)
• Laser power check mode (LDPWR CHECK) (C13)
• Laser power adjustment mode (LDPWR ADJUST) (C04)
• Comparison with initial Iop value written in nonvolatile memory (Iop Compare) (C27)
• Write current Iop value in read nonvolatile memory using microprocessor (Iop NV Save) (C06)
• Traverse (MO) check (EF MO CHECK) (C14)
• Traverse (MO) adjustment (EF MO ADJUST) (C07)
• When pressing the [REC/REC IT] button.

Procedure : 1. Press the ?/1 button to turn the power on. (HCD-SE9)

2. Press the [FUNCTION] button to enter “MD” mode. (HCD-SE9)
3. Press three buttons of  

MD

 x , [REC MODE] and  Z 

MD

  simultaneously.

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

MD 

.  or  

MD 

> button between the

following three groups; ···

Tt [Check] Tt [Service] Tt [Develop] Tt ···.

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 [MODE] button immediately to exit the [Develop] group.

Press the  Z 

TAPE

  button once and press the  ?

/

1  button to turn the power off, the set goes to the standby mode.

All operations are performed using the  

MD

 

.

 ,  

MD

 

>

 , [ENTER/START], [MODE] and [TAPE REC] buttons.

The functions of these buttons are as follows.

Function name

Function

[ENTER/START]

 

button

Proceeds onto the next step. Finalizes input

[MODE]

 

button

Returns to previous step. Stops operations

 

MD

 . ,

MD

 > buttons

Changes parameters and modes

[TAPE REC]

 

button

Selects the sub menu

26

• For details of each adjustment mode, refer to “SECTION 6  ELECTRICAL ADJUSTMENTS”.

About “Err Display” (C02), please refer to a page 7 self-diagnostic function.

• If a different mode has been selected by mistake, press the

 

[MODE]

 

button to release that mode.

• Modes with (

×

) in the Mark column are not used for servicing and therefore are not described in detail. If these modes are set acciden-

tally, press the

 

[MODE]

 

button to release the mode immediately.

5-1. Operating the Continuous Playback Mode

1.

Entering the continuous playback mode
(1) Set the disc in the unit. (Whichever recordable discs or discs for playback only are available)
(2) Press the  

MD

 .  or  

MD

 >  button to display “CPLAY 2MODE” (C36).

(3) Press the [ENTER/START] button to change the display to “CPLAY2MID”.
(4) When access completes, the display changes to “C = 

 AD = 

 )”.

Note: The numbers “   ” on the display show you error rates and ADER.

2.

Changing the parts to be played back
(1) Press the [ENTER/START] 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 “   ” on the display show you error rates and ADER.

3.

Ending the continuous playback mode
(1) Press the [MODE] button. The display will change to “CPLAY 2MODE” (C36).
(2) Press the  Z 

MD

  button and take out the disc.

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

IN

: 40h cluster

MID

: 300h cluster

OUT

: 700h cluster

Display

AUTO CHECK

Err Display

TEMP ADJUST

LDPWR ADJUST

Iop Write

Iop NV Save

EF MO ADJUST

EF CD ADJUST

FBIAS ADJUST

AG Set (MO)

AG Set (CD)

TEMP CHECK

LDPWR CHECK

EF MO CHECK

EF CD CHECK

FBIAS CHECK

ScurveCHECK

VERIFYMODE

DETRK CHECK

0920 CHECK

Iop Read

Iop Compare

ADJ CLEAR

INFORMATION

CPLAY 2MODE

CREC 2MODE

Details

Automatic self-diagnosis

Error history display, clear

Temperature compensation offset adjustment

Laser power adjustment

Iop data writing

Writes current Iop value in read nonvolatile memory using microprocessor

Traverse (MO) adjustment

Traverse (CD) adjustment

Focus bias adjustment

Auto gain output level adjustment (MO)

Auto gain output level adjustment (CD)

Temperature compensation offset check

Laser power check

Traverse (MO) check

Traverse (CD) check

Focus bias check

S-curve check

Nonvolatile memory check

Detrack check

Most circumference check

Iop data display

Comparison with initial Iop value written in nonvolatile memory

Initialization of nonvolatile memory for adjustment values

Display of microprocessor version, etc.

Continuous playback mode

Continuous recording mode

No.

C01

C02

C03

C04

C05

C06

C07

C08

C09

C10

C11

C12

C13

C14

C15

C16

C17

C18

C19

C25

C26

C27

C28

C31

C36

C37

Mark

Group

Check

Service

“CPLAY 2MID” 

t “CPLAY 2OUT” t “CPLAY 2IN”  

27

5-2. Operating the Continuous Recording Mode

 (Use only when performing self-recording/playback check)

1.

Entering the continuous recording mode
(1) Set a recordable disc in the unit.
(2) Press the  

MD

 .  or  

MD

 >  button to display “CREC

 

2MODE” (C37).

(3) Press the [ENTER/START] button to change the display to “CREC 2MID

”

.

(4) When access completes, the display changes to “CREC 2( 

 )” and “

           

” lights up.

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

2.

Changing the parts to be recorded
(1) When the [ENTER/START] 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 “CREC 2( 

 )” and “ 

          

” lights up.

Note: The numbers “   ” on the display show you the recording position addresses.

3.

Ending the continuous recording mode
(1) Press the [MODE] button. The display changes to “CREC 2MODE” (C37) and “ 

          

”  goes off.

(2) Press the  Z 

MD

  button and take out 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 [MODE] 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.

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 Compare.
Procedure:

1.

Display “AUTO CHECK” and press the [ENTER/START] 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 (C27), and then repeat from step1.

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 disc 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 (TDYS-1).

5.

When the disc is loaded in step 4, the check will automatically be resumed from “07 CHECK”.

6.

After completing to “0C CHECK”, check OK or NG will be displayed. If all items are OK, “CHK ALL OK” will be displayed. If any
item is NG, it will be displayed as “NG:xxxx”.

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

“CREC 2MID” 

t “CREC 2OUT” t “CREC 2IN”  

REC

REC

REC

REC

Function

MD

 N X

MD

 x

TAPE

 M

TAPE

 m

TAPE DIRECTION

REC MODE

Z 

MD

Z 

TAPE

TAPE

 X

REC/REC IT

DISPLAY

Contents

Sets continuous playback when this is pressed in the STOP state. When this is pressed during
continuous playback, tracking power 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 the spindle servo mode (CLV S 

↔ 

CLV A)

Switches the pits or grooves each time the button is pressed

Ejects the disc

Releases the test mode

Clears the setting of pits and groove, and judges pits and groove again.

When it is pressed while servo is turning on, the recording starts from present position.

Switches the display mode

28

Procedure:
1.

Mode : Playback

2.

Turn the adjustment screw and check output peaks. If the peaks
do not match for L-CH and R-CH, turn the adjustment screw
so that outputs match within 1 dB of peak.

L-CH peak

R-CH peak

screw position

output
level

within
1 dB

L-CH peak

R-CH peak

screw position

within 1dB

1.

Demagnetize the record/playback head with a head demagne-
tizer.

2.

Do not use a magnetized screwdriver for the adjustments.

3.

The adjustments should be performed with the rated power
supply voltage unless otherwise noted.

4.

The adjustments should be performed in the order given in this
service manual. (As a general rule, playback circuit adjustment
should be completed before performing recording circuit ad-
justment.)

5.

The adjustments should be performed for both L-CH and R-
CH.

6.

Switches and controls should be set as follows unless other-
wise specified.

test tape
P-4-A100
(10kHz, –10dB)

level meter

set

+

–

MD/TAPE OUT   (J401)

Tape

P-4-A100

WS-48B

10 kHz, –10 dB

3 kHz, 0 dB

Azimuth Adjustment

Tape Speed Adjustment

Signal

Used for

1.

Clean the following parts with a denatured-alcohol-moistened

swab:
record/playback head pinch roller
erase head rubber belts
capstan
2.

Demagnetize the record/playback head with a head demagne-
tizer.
(Do not bring the head demagnetizer close to the erase head.)

3.

Do not use a magnetized screwdriver for the adjustments.

4.

The adjustments should be performed with the rated power
supply voltage unless otherwise noted.

Torque

Torque Meter

Meter Reading

FWD

CQ-102C

2.94 to 7.74mN •m
(30 to 79g •cm)

FWD

CQ- 102C

0.20 to 0.59mN •m

back tension

(2 to 6g •cm)

REV

CQ- 102RC

2.94 to 7.74mN •m
(30 to 79g •cm)

REV

CQ-102RC

0.20 to 0.59mN •m

back tension

(2 to 6g •cm)

FF,REW

CQ- 201B

6.86 to 17.64mN •m
(70 to 179g •cm)

FWD

CQ-403A

9.80mN •m or more

tension

(100g •cm or more)

REV

CQ-403R

9.80mN •m or more

tension

(100g •cm or more)

tape mechanism deck

adjustment screw