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7

Use the self-diagnostics function in the "error history display mode" of the test mode. The least required procedure is described
below. Do not enter any other modes by mistake. If you have entered any other modes accidentally, press the  MENU/NO “R”
button to exit the mode.

1.

Press the  

?/1

  button to turn on the power.

2.

Press the  FUNCTION  button to select the “MD” function.

3.

While pressing the  x  button and the  REC MODE  button at the same time, press the  FUNCTION  button.

4.

Press the  MD 

>

 “R”  button to display “[Service]”. Then press the  ENTER/YES “R”  button.

5.

Press the  MD 

>

 “R”  button to display “Err Display”.

6.

Press the  ENTER/YES “R”  button to enter the error history display mode and  “op rec tm” appears.

7.

Select the desired contents that you want to display or to execute using the  MD 

.

 “R”  button or the  MD 

>

 “R”  button.

8.

Press the  REC MODE  button to display or to execute the selected contents.

9.

Press the  REC MODE  button again to return to step 7.

10. Press the  MENU/NO “R”  button. The message “Err Display” appears and you exit the error history mode.
11. Press the  REPEAT  button twice to exit the test mode.
12. Press the  

?/1

  button to turn off the power.

About “R”
As this unit has only a few buttons, some operations require the use of remote commander (RM-SM700E/provided with unit)  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 test mode is not entered properly.
In this case, press the  ?

/1

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

8

Display

op rec tm

op play tm

spdl rp tm

retry err

total err

err history

retry adrs

er refresh

op change

spdl change

History

Displays the accumulated recording time.
When the accumulated recording time is more than 1 minute, displays the hour and minute
When less than 1 minute, displays “Under 1 min”
The display time indicates the time when the laser is set to high power more, which is about 1/4 of the actual
recording time.

Displays the accumulated playback time.
When the accumulated playback time is more than 1 minute, displays the hour and minute
When less than 1 minute, displays “Under 1 min”

Displays the accumulated rotating time of the spindle motor.
When the accumulated rotating time is more than 1 minute, displays the hour and minute
When less than 1 minute, displays “Under 1 min”

Displays the accumulated number of retry errors during recording and playback
Displays “r 

 p 

”. 

 is the number of errors during recording. 

 is the number of errors during playback.

This is displayed in hexadecimal from 00 to FF.

Displays the total number of errors
Displays “total 

”. This is displayed in hexadecimal from 00 to FF.

Displays the past ten errors.
Displays “0x ErrCd@@”.
X is the history number. The younger the number, the more recent is the history (00 is the latest). @@ is the
error code.
Select the error history number by pressing the  MD 

. 

“R”  or  MD 

> 

“R”  button.

Displays the past five retry addresses.
Displays “

 ADRS 

”, 

 is the history number, 

 is the cluster with the retry error.

Select the error history number by pressing the  MD 

. 

“R”  or  MD 

> 

“R”  button.

Mode for erasing the error and retry address histories
Procedure
1. Press the  REC MODE  button when displayed as “er refresh”.
2. When the display changes to “er refresh?”, press the  ENTER/YES “R”  button
When “Complete!!” is displayed, it means erasure has completed.
Be sure to check the following after executing this mode.
*Data has been erased.
*Perform recording and playback, and check that the mechanism is normal.

Mode for erasing the accumulated time of op rec tm, op play tm.
Use these histories as a guide line for the time of replacement of the optical pick-up. If the optical pick-up
has been replaced, perform this procedure and erase the past history.
Procedure
1. Press the  REC MODE  button when displayed as “op change”.
2. When the display changes to “op change?”, press the  ENTER/YES “R”  button.
When “Complete!!” is displayed, it means erasure has completed.

Mode for erasing the accumulated spdl rp tm time
Use these histories as the guide line for the time of replacement of the spindle motor. If the spindle motor has
been replaced, perform this procedure and erase the past history.
Procedure
1. Press the  REC MODE  button when displayed as “spdl change”
2. When the display changes to “spdl change?”, press the  ENTER/YES “R”  button.
When “Complete!!” is displayed, it means erasure has completed.

9

Error Code

Description

10

11

12

20

21

22

23

24

30

31

40

41

42

43

50

51

Could not perform loading

The changer error occurred

Loading switches combined incorrectly

Timed out without reading the top of PTOC

Could read top of PTOC, but detected error

Timed out without accessing UTOC

Timed out without reading UTOC

Error in UTOC

Could not start playback

Error in sector

A cause of retry occurred during normal recording

Retried due to DRAM overflow

Retry occurred during TOC writing

Retry aborted during S.F editing

Other than access processing, and could not read address.

Focus NG occurred and overran.

10

The special jig (J-2501-196-A) is useful for checking the waveform of the BD board. The names of terminals and the checking items to be
performed are shown as follows.

GND : Ground
I+3V : For measuring Iop (Check the deterioration of the optical pick-up laser)
Iop

: For measuring Iop (Check the deterioration of the optical pick-up laser)

TE

: TRK error signal (Traverse adjustment)

VC

: Reference level for checking the signal

RF

: RF signal (Check jitter)

FE

: Focus error signal

I+3V

Iop

TE

VC

GND

FE

RF

CN105

I+3V
Iop
GND
TE
FE
VC
RF

I+3V
Iop
GND
TE
FE
VC
RF

1

7

for MDM-7B4M