Sony MDS-PC1 Service Manual ▷ View online
– 33 –
3-6. SLIDER COMPLETE ASSEMBLY
1
Screw
(M1.7x2)
2
Retainer (gear)
3
Set the shaft of Gear (LA) to be at the
position in the figure.
4
Remove the slider complete assembly
in the direction of arrow with putting
out of two claws.
out of two claws.
Install the part A of lever (head up)
to pass over the slider complete assembly.
to pass over the slider complete assembly.
Take care not to damage the
detective switch.
detective switch.
Part A
OK
NG
Slider complete assembly
45˚
claw
claw
• Note for installation of Slider complete assembly
– 34 –
4-1. PRECAUTIONS FOR USE OF TEST MODE
(1) 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 § 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 EDIT/NO button to stop the disc rotation before pressing the § button.
Even if § 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 EDIT/NO button to stop the disc rotation before pressing the § button.
(2) Detection of the rec-proof tab is not performed in the test mode. Therefore, the contents of the recorded contents will be erased when
operations in the mode for emitting the recording laser are performed (4-1-1) or when the r button is pressed. Consequently, be careful
not to set the continuous recording mode and traverse adjustment mode with a disc whose contents cannot be erased in the test mode.
not to set the continuous recording mode and traverse adjustment mode with a disc whose contents cannot be erased in the test mode.
4-1-1. Recording Laser Emission Mode and Operating Buttons
* Continuous recording mode (CREC MODE)
* Traverse adjustment mode (EFBAL ADJUST)
* Laser power adjustment mode (LDPWR ADJUST)
* Laser power check mode (LDPWR CHECK)
* Traverse (MO) check (EF MO CHECK)
* Traverse (MO) adjustment (EF MO ADJUST)
* When pressing the r button.
* Traverse adjustment mode (EFBAL ADJUST)
* Laser power adjustment mode (LDPWR ADJUST)
* Laser power check mode (LDPWR CHECK)
* Traverse (MO) check (EF MO CHECK)
* Traverse (MO) adjustment (EF MO ADJUST)
* When pressing the r button.
4-2. SETTING THE TEST MODE
While pressing the AMS dial, connect the power plug to the outlet and release the AMS dial.
4-3. EXITING THE TEST MODE
With the TIMER knob set to “OFF”, press the POWER button. The STANDBY state will be set.
4-4. BASIC OPERATIONS OF THE TEST MODE
All operations are performed using the AMS dial, YES button, and EDIT/NO button.
The functions of these buttons are as follows.
The functions of these buttons are as follows.
SECTION 4
TEST MODE
Function name
AMS knob
YES button
EDIT/NO button
Function
Changes parameters and modes
Proceeds onto the next step. Finalizes input.
Returns to previous step. Stops operations.
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Display
TEMP CHECK
LDPWR CHECK
EF MO CHECK
EF CD CHECK
FBIAS CHECK
CPLAY MODE
CREC MODE
Scurve CHECK
DETRK CHECK
TEMP ADJUST
LDPWR ADJUST
EF MO ADJUST
EF CD ADJUST
FBIAS ADJUST
EEP MODE
MANUAL CMD
SVDATA READ
ERR DP MODE
SLED MOVE
ACCESS MODE
0920 CHECK
HEAD ADJUST
Ver@@@@@
Contents
Temperature compensation offset check
Laser power check
Traverse (MO) check
Traverse (CD) check
Focus bias check
Continuous playback mode
Continuous recording mode
S curve check
Detrack check
Temperature compensation offset adjustment
Laser power check
Traverse (MO) check
Traverse (CD) check
Focus bias check
Nonvolatile memory control
Command transfer
Status display
Error history display, clear
Sled check
Access check
Outermost circumference check
Head position check
Microprocessor version display
Mark
(
X
)
(
X
)
(X
) (!)
(
X
)
(
X
)
(X
)
(
X
)
(
X
)
(X
)
4-5. SELECTING THE TEST MODE
There are altogether 23 test modes, shown in the following table. Rotating the AMS dial to the right switches to the mode below the current
mode in the table while rotating to the left switches to the mode above. Each time the EDIT/NO button is pressed, the display changes in the
following order;
“TEMP CHECK” n “TEMP ADJUST” n “SLED MOVE” n “TEMP CHECK”...
mode in the table while rotating to the left switches to the mode above. Each time the EDIT/NO button is pressed, the display changes in the
following order;
“TEMP CHECK” n “TEMP ADJUST” n “SLED MOVE” n “TEMP CHECK”...
• For details of each adjustment mode, refer to the items in “5. Electric Adjustments”. For details of “ERR DP MODE”, refer to the self-
diagnosis function on page 2.
• If other modes are set accidentally, press the EDIT/NO button to exit that mode.
• As items marked (
• As items marked (
X
) in the “Mark” column are not used during servicing, they are not described here. If these modes are set accidentally,
press the EDIT/NO button to exit that mode. Be especially careful with items marked (!) as they will overwrite the non-volatile memory,
and as a result, the unit will not operate normally.
and as a result, the unit will not operate normally.
4-5-1. Operating the Continuous Playback Mode
1. Entering the continuous playback mode
(1) Set the disc in the unit. (Recordable discs or discs for playback only).
(2) Rotate the AMS dial and display “CPLAY MODE”.
(3) Press the YES button to change the display to “CPLAY MID”.
(4) When access completes, the display changes to “C1=
(2) Rotate the AMS dial and display “CPLAY MODE”.
(3) Press the YES button to change the display to “CPLAY MID”.
(4) When access completes, the display changes to “C1=
AD=
”.
Note: The numbers “ ” displayed indicate the error rate and “ADER”.
2. Changing the part to be played back
(1) When th YES button is pressed during continuous playback, the display changes as below, and the played back part can be changed.
(2) When access completes, the display changes to “C1=
AD=
”.
Note: The numbers “ ” displayed indicate the error rate and “ADER”.
3. Ending the continuous playback mode
(1) Press the EDIT/NO button. The display changes to “CPLAY MODE”.
(2) Press the § button to remove the disc.
Note: The playback start addresses for IN, MID, and OUT are as follows. To display the playback position address on the display, press
(2) Press the § button to remove the disc.
Note: The playback start addresses for IN, MID, and OUT are as follows. To display the playback position address on the display, press
the DISPLAY/CHAR button to display “CPLAY(
)”.
IN:
40h cluster
MID: 300h cluster
OUT:700h cluster
OUT:700h cluster
“CPLAY MID” n “CPLAY OUT” n “CPLAY IN”
– 36 –
Contents
Sets continuous playback when pressed in the STOP state. Turns ON/OFF the tracking servo when pressed during continuous
playback.
Stops the continuous playback and recording.
Moves the sled to the external circumference only while the button is pressed.
Moves the sled to the internal circumference only while the button is pressed.
Turns ON/OFF recording during continuous playback.
Switches between bit and groove when pressed.
Switches the spindle servo mode (CLVS ˜ CLV A).
Switches the displayed contents when pressed.
Ejects the disc.
Exits the test mode.
*Note: The function of the POWER button changes according to the position of the TIMER knob.
“CPLAY MID” n “CPLAY OUT” n “CPLAY IN”
4-5-2. Operating the Continuous Recording Mode
1. Entering the continuous recording mode
1 Set a recordable disc in the unit. (Refer to Note 3.)
2 Rotate the AMS dial and display “CREC MODE”.
3 Press the YES button to change the display to “CREC MID”.
2 Rotate the AMS dial and display “CREC MODE”.
3 Press the YES button to change the display to “CREC MID”.
4 When access completes, the display changes to “CREC (
)” and the
REC
display lights up.
Note: The numbers “ ” displayed indicate the recording position address.
2. Changing the part to be recorded
1 When th YES button is pressed during continuous recording, the display changes as below and the recorded part can be changed.
The
REC
display is off while changing.
2 When access completes, the display changes to “CREC MODE”, and the
REC
display lights up.
Note: The numbers “ ” displayed indicate the recording position address.
3. Ending the continuous recording mode
1 Press the EDIT/NO button. The display changes to “CREC (
)”, and the
REC
display lights up.
2 Press the § button to remove the disc.
Note 1: The recording start addresses for IN, MID, and OUT are as follows.
Note 1: The recording start addresses for IN, MID, and OUT are as follows.
IN:
40h cluster
MID: 300h cluster
OUT: 700h cluster
OUT: 700h cluster
Note 2: The EDIT/NO button can be used to stop recording anytime.
Note 3: The rec-proof tab will not be detected during the test mode. Be careful not to set the continuous recording mode with a disc whose
Note 3: The rec-proof tab will not be detected during the test mode. Be careful not to set the continuous recording mode with a disc whose
contents cannot be erased.
Note 4: Do not perform continuous recording for long periods of time above 5 minutes.
Note 5: During continuous recording, be careful not to apply vibration.
Note 5: During continuous recording, be careful not to apply vibration.
4-5-3. Non-Volatile Memory Mode (EEP MODE)
This mode reads and writes the contents of the non-volatile memory.
It is not used in servicing. If set accidentally, press the EDIT/NO button immediately to exit it.
It is not used in servicing. If set accidentally, press the EDIT/NO button immediately to exit it.
4-6. FUNCTIONS OF OTHER BUTTONS
Function
·P
p
)
0
r REC
POWER (*NOTE)
(TIMER : PLAY or REC)
PLAY MODE
DISPLAY/CHAR
§
POWER (*NOTE)
(TIMER: OFF)
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