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Model
MDS-LSA1
Pages
82
Size
4.6 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
mds-lsa1.pdf
Date

Sony MDS-LSA1 Service Manual ▷ View online

21
3-9. BD BOARD
3-8. OPTICAL PICK-UP (MD)
       (KMS-262A/J1N)
2
 base assy, SL
5
 shaft, main
6
 optical pick-up
1
 screw (P 1.7x6)
3
 two screws (KTP 2x6)
4
M102
M101
M103
S102
2
Remove the solder
      (Two portions)
2
Remove the solder
      (Two portions)
2
Remove the solder
    (Two portions)
2
Remove the solder
      (Three portions)
1
connector
(CN104)
5
connector
(CN101)
3
two screws
(BTP 2 
×
 6)
4
BD board
22
SECTION 4
TEST MODE
Function name
 x button
 7 button
   . or   >   button
 POWER button
*
Function
Cancel or move to top hierarchy
Set
Select
Set submenu
4-1. PRECAUTIONS FOR USE OF 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  A  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  A  button after pressing the  POWER“X2”  button and the rotation of disc is stopped.
4-1-1. Recording laser emission mode and operating buttons
• Continuous recording mode (CREC 1MODE)
• Laser power check mode (LDPWR CHECK)
• Laser power adjustment mode (LDPWR ADJUS)
• Iop check (Iop Compare)
• Iop value nonvolatile writing (Iop NV Save)
• Traverse (MO) check (EF MO CHECK)
• Traverse (MO) adjustment (EF MO ADJUS)
• When pressing the  z REC  button.
4-2. SETTING THE TEST MODE
Procedure : While pressing the   .  button and  x  button, connect the power plug to an outlet, and release the   .  button and  x
button.
When the test mode is set, “[Check]” will be displayed. Press the   . or   >   button switches between the following three
groups; ··· y Check y Service y Develop y ···.
NOTE: 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   x  button immediately to exit the [Develop] group.
4-3. EXITING THE TEST MODE
Press the  POWER“X2”  button. The disc is ejected when loaded, and “Standby” display blinks, and the STANDBY state is set.
4-4. BASIC OPERATIONS OF THE TEST MODE
All operations are performed using the  . or   >   button,   7  button, and   x  button.
The functions of these buttons are as follows.
*
 NOTE: It dosen’t work in the ease of “X2” mode.
NOTE
• The MDS-LSA1 is designed so that a number of functions which may be performed in test mode may be performed by clicking a single
button.
Switching between functions
Pressing the  INPUT  button causes the display to change as indicated below.
Hidden t “X2”
The functions performed by each button change in accordance with the DISPLAY mode.
Note that the following notation is used herein:
 POWER ............. Press the  POWER  button when HIDDEN.
 POWER “X2” .... Press the  POWER  button while “X2” is lit.
23
Display
AUTO CHECK
Err Display
TEMP ADJUS
LDPWR ADJUS
Iop Write
Iop NV Save
EF MO ADJUS
EF CD ADJUS
FBIAS ADJUS
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
CPLAY2MODE
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
Focus, tracking gain adjustment (MO)
Focus, tracking gain 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 (CLV2)
Continuous recording mode (CLV2)
4-5. SELECTING THE TEST MODE
There are 26 types of test modes as shown below. The groups can be switched by press the  .  or   >  button. After selecting the group
to be used, press the  7  button. After setting a certain group, press the  .  or   >   button switches between these modes.
Refer to “Group” in the table for details selected.
All adjustments and checks during servicing can be performed in the test mode in the Service group.
• For details of each adjustment mode, refer to “5. Electrical Adjustments”.
For details of “Err Display”, refer to “Self-Diagnosis Function” on page 2.
• If a different mode has been selected by mistake, press the  x  button to exit that mode.
• Modes with (
X
) 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   x   button to exit the mode immediately.
Mark
Group
Check
Service
NOTE: 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  x button immediately to exit the [Develop] group.
24
4-5-1. 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
Pressthe  .  or  >  button and display “CPLAY2MODE”.
3
Press the 7  button to change the display to “CPLAY2MID”.
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  7  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  x  button. The display will change to “CPLAY2MODE”.
2
Press the  A 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
4-5-2. Operating the Continuous Recording Mode (Use only when performing self-recording/palyback check.)
1. Entering the continuous recording mode
1
Set a recordable disc in the unit.
2
Press the  .  or  >  button and display “CREC 2MODE” .
3
Press the  7  button to change the display to “CREC 2MID”.
4
When access completes, the display changes to “CREC 2(
)” and REC LED lights up.
Note : The numbers “ ” displayed shows you the recording position addresses.
2. Changing the parts to be recorded
1
When the  7  button is pressed during continuous recording, the display changes as below.
When pressed another time, the parts to be recorded can be changed. REC LED goes off.
2
When access completes, the display changes to “CREC2 (
)” and REC LED lights up.
Note : The numbers “ ” displayed shows you the recording position addresses.
3. Ending the continuous recording mode
1
Press the  x  button. The display changes to “CREC 2MODE” and REC LED 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  x  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.
“CPLAY2MID” t “CPLAY2OUT” t “CPLAY2IN”  
“CREC 2MID” t “CREC 2OUT” t “CREC 2IN”  
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