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29

The IOP value labeled on the optical pick-up can be recorded in
the non-volatile memory. By recording the value, it will eliminate
the need to look at the value on the label of the optical pick-up.
When replacing the optical pick-up or non-volatile memory (IC195
of BD (MD) board), record the IOP value on the optical pick-up
according to the following procedure.

Record Procedure:
1. Press the  ?/1  button to turn the power on.
2. Press the  

FUNCTION 

z  button to set the MD function.

3. Press three buttons of  

VOL -

 ,  x  and 

 CD SYNC HIGH

  ,

simultaneously to enter the MD test mode and display
“[Check]”.

4. Press the  . 

“R”

  or  > 

“R”

  button to display

“[Service]”.

5. Press the  

ENTER/YES  “R”

  button to display “AUTO

CHECK”, and press the  > 

“R”

  button to display “Iop

Write”.

6. Press the  

ENTER/YES “R”

  button.

7. The display becomes “Ref= @@@.@” (@ is an arbitrary num-

ber) and the numbers which can be changed will blink.

8. Input the IOP value written on the optical pick-up.

To select the number : Press the

. 

“R”

or > 

“R”

button.

To select the digit :

Press two buttons of  

VOL -

  and

CD 

Z  simultaneously.

9. When the

ENTER/YES  “R”

button is pressed, the display

becomes “Measu=@@@.@” (@ is an arbitrary number).

10. As the adjustment results are recorded for the step 9 value.

Leave it as it is and press the  

ENTER/YES “R”

  button.

11. “Complete!” will be displayed momentarily. The value will

be recorded in the non-volatile memory and the display will
become “Iop Write”.

12. Press the  

REPEAT “R”

  button, or press two buttons of

VOL -

  and  

MD 

Z  simultaneously. to complete. “Initialize”

will be displayed and release the MD test mode.

Display Precedure:
1. Press the  ?/1  button to turn the power on.
2. Press the  

FUNCTION 

z  button to set the MD function.

3. Press three buttons of  

VOL -

  ,  x  , and 

 CD SYNC HIGH

simultaneously to enter the MD test mode and display
“[Check]”.

4. Press the  . 

“R”

  or  > 

“R”

  button to display “[Ser-

vice]”.

5. Press the  

ENTER/YES  “R”

  button to display “AUTO

CHECK”, and press the  > 

“R”

  button to display “Iop Read”.

6. Press the  

ENTER/YES “R”

  button.

7. “@@.@/##.#” is displayed and the recorded contents are dis-

played.
@@.@ : Indicates the Iop value labeled on the pick-up.
##.#

: Indicates the Iop value after adjustment.

8. Press the  

REPEAT “R”

  button to complete. “Initialize” will

be displayed and release the MD test mode.

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

Procedure:
1. Enter the MD test mode.
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

x

  and 

MD 

Z  buttons simultaneously.

4. Press the  

. 

“R”

  or

  >

 “R”

  button to display “MDM-7B4M”.

5. Press the

ENTER/YES “R”

button. If the nonvolatile memory is

successfully overwritten, the normal MD test mode will be set
and a message to select the MD test mode will be displayed.

30

Before performing repairs, perform the following checks to determine the faulty locations up to a certain extent.
Details of the procedures are described in “5 Electrical Adjustments”.

• 0.9 mW power

Specified value : figure1

• 7.0 mW power

Specified value : figure2

Iop (at 7.0mW)

• Labeled on the optical pick-up

Iop value 

±

 10mA

• Unsatisfactory if displayed as “NG: XXXX”

(X is an arbitrary number)

• Unsatisfactory if displayed as “T=@@ (##) [NG]”

(@@, ## are both arbitrary numbers)

Laser power check
(6-2 : See page 37)

Auto check
(6-4 : See page 38)

Temperature
compensation
offset check
(6-1 : See page 37)

(Unsatisfactory if specified value is not satisfied)

• Clean the optical pick-up
• Adjust again
• Replace the optical pick-up

• Replace the optical pick-up

• Replace the optical pick-up

• Check for disconnection of the circuits around D101

(BD (MD) board)

• Check the signals around IC101, IC151, CN102, CN103

(BD (MD) board)

The criteria for determination above is intended merely to determine if satisfactory or not, and does not serve as the specified value for adjust-
ments.
When performing adjustments, use the specified values for adjustments.

• In this test mode, the causes for retry of the unit during recording can be displayed on the fluorescent indicator tube. During

playback, the “track mode” for obtaining track information will be set.
This is useful for locating the faulty part of the unit.

• The following will be displayed :

During recording and stop : Retry cause, number of retries, and number of retry errors.
During playback

: Information such as type of disc played, part played, copyright.

These are displayed in hexadecimal.

Precedure:
1. Load a recordable disc whose contents can be erased into the unit.
2. Press the  

MENU/NO “R”  

button. When “Edit Menu” is displayed on the fluorescent indicator tube, press the

. 

“R”

or  > 

“R”

  button to display “All Erase?”.

3. Press the  

ENTER/YES “R”

  button.

4. When “All Erase??” is displayed on the fluorescent indicator tube.
5. Press the  

ENTER/YES “R”

  button to display “Complete!”.

6. Press the  

REC/REC IT

  button to start recording. Then press the  u

 

  button and start recording. If recording cannot be performed,

press the  

FUNCTION 

z  button and set a different function.

7. Press three buttons of

  VOL -  

,

  

u

  

and

  CD SYNC HIGH  

simultaneously to enter the retry cause display mode.

8. To check the “track mode”, press the

  

u

  

button to start playback.

9. To release this mode, press the  ?/1  button to turn the power off. When “TOC” goes off, disconnect the power plug from the

outlet.
If the test mode cannot be released, refer to “Factory Preset” on page 24.

KMS-260B
KMS-260E

6.8 to 7.2 mW
7.0 to 7.5 mW

KMS-260B
KMS-260E

0.85 to 0.91 mW
0.90 to 0.96 mW

31

Reading the Display:
Convert the hexadecimal display into binary display. If more than two causes, they will be added.

When 42 is displayed:
Higher bit : 4 = 0100 

t b6

Lower bit : 2 = 0010 

t b1

In this case, the retry cause is combined of “CLV unlock” and “ader5”.

When A2 is displayed:
Higher bit : A = 1010 

t b7 + b5

Lower bit : 2 = 0010 

t b1

The retry cause in this case is combined of “Access fault”, “IVR rec error”, and “ader5”.

01

02

04

08

10

20

40

80

When track jump (shock) is detected

When ADER was counted more than five times

continuously

When ADIP address is not continuous

When DIN unlock is detected

When not in focus

When ABCD signal level exceeds the specified range

When CLV is unlocked

When access operation is not performed normally

shock

ader5

Discontinuous address

DIN unlock

FCS incorrect

IVR rec erraor

CLV unlock

Access fault

8

4

2

1

8

4

2

1

b7

b6

b5

b4

b3

b2

b1

b0

0

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

0

RTs@@c##e

**

fluorescent indicator tube

@@ : Cause of retry
##

: Number of retries

**

: Number of retry errors

@@ ###

** 

$$

fluorescent indicator tube

@@ : Parts No. (name of area named on TOC)
##

: Cluster

**

: Sector

$$

: Track mode (Track information such as

copyright information of each part)

32

Reading the Display:
Convert the hexadecimal display into binary display. If more than two causes, they will be added.

Higher bit : 8 = 1000 

t b7

Lower bit : 4 = 0100 

t b2

In this case, as b2 and b7 are 1 and others are 0, it can be determined that the retry cause is combined of “Emphasis OFF”, “Monaural”,
“Original”, “Copyright”, and “Write allowed”.

Higher bit : 0 =  0000 

t All 0

Lower bit : 7 = 0111 

t b0 + b1 + b2

In this case, as b0, b1, and b2 are 1 and others are 0, it can be determined that the retry cause is combined of “Emphasis ON”, “Stereo”,
“Original”, “Copyright”, and “Write prohibited”.

t

0

0000

8

1000

1

0001

9

1001

2

0010

A

1010

3

0011

B

1011

4

0100

C

1100

5

0101

D

1101

6

0110

E

1110

7

0111

F

1111

01

02

04

08

10

20

40

80

Emphasis OFF

Monaural

This is 2-bit display. Normally 01.
01:Normal audio. Others:Invalid

Audio (Normal)

Original

Copyright

Write prohibited

8

4

2

1

8

4

2

1

b7

b6

b5

b4

b3

b2

b1

b0

0

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

0

Emphasis ON

Stereo

Invalid

Digital copy

No copyright

Write allowed