DOWNLOAD Sony DVP-F41MS Service Manual ↓ Size: 6.71 MB | Pages: 95 in PDF or view online for FREE

Select 

[2]

, insert CD disc, and press 

[ENTER]

 key, and the

adjustment will be made through the following steps, then
adjusted values will be written to the EEPROM.

1.

Sled Tilt Reset

2

. Disc Check Memory CD

3.

Set Disc Type CD

4

. Spdl Start

5

. Wait 1 sec

6

. LD ON

7

. Focus Error Check

8

. Fcs ON 1

9

. Auto Track Offset Adjust L0

10

. Trv Level Check

11

. Tracking ON

12

. Wait 100 msec

13

. CLVA ON

14

. Wait 500 msec

15

. Sled ON

16

. Auto Loop Filter Offset Adjust

17

. Auto Focus Gain Adjust L0

18

. Auto Focus Balance Adjust L0

19

. Eq Boost Adjust

20

. Auto Loop Filter Offset Adjust

21

. Auto Track Gain Adjust

22

. RF Level Measure

23

. Jitter Disp ON

24

. Jitter Memory

25

. Jitter Disp OFF

26

. All Servo Stop

Select 

[3]

, insert DVD dual layer disc, and press 

[ENTER]

 key,

and the adjustment will be made through the following steps, then
adjusted values will be written to the EEPROM.

1.

Sled Tilt Reset

2.

Disc Check Memory DL

3.

Set Disc Type DL

Layer 1 Adjust
4.

Spdl Start (Wait 1 sec)

5.

LD ON

6.

Fcs ON 1

7.

Auto Track Offset Adjust L1

8.

Tracking ON

9.

Wait 100 msec

10

. Clva ON (Wait 500 msec)

11

. Sled ON

12

. Auto Focus Gain Adjust L1

13

. Auto Focus Balance Adjust L1

14

. Eq Boost Adjust L1

15

. Auto Track Gain Adjust L1

16

. Jitter Disp ON

17

. Jitter Memory

18

. Jitter Disp Off

Layer 0 Adjust
19

. Focus Jump (L1 → L0)

20

. Auto Track Offset Adjust L0

21

. Tracking ON (Wait 100 msec)

22

. Clva ON (Wait 500 msec)

23

. Sled ON

24

. Auto Focus Gain Adjust L0

25

. Auto Focus Balance Adjust L0

26

. Eq Boost Adjust L0

27

. Auto Track Gain Adjust L0

28

. Jitter Disp ON

29

. Jitter Memory

30

. Jitter Disp OFF

31

. All Servo Stop

This model does not adjust it because the adjusted data of CD are
reflected.

## Drive Manual Operation ##

Operation Menu

1. Disc type

2. Servo Control

3. Track/Layer Jump

4. Manual Adjustment

5. Auto Adjustment

6. Memory Check

0. Disc Check Memory

Exit: RETURN

1.

Set correctly the disc type to be used on the Disc Type
screen.
The disc type must be set after a disc was loaded.
The set disc type is cleared when the tray is opened.

2.

After power ON, if the Drive Manual Operation was
selected, first perform “Reset SLED TILT” by opening
1. Disc Type screen.

3.

In case of an alarm, immediately press the 

[STOP]

button to stop the servo operation, and turn the power
OFF.

On the Test Mode Menu screen, select 

[2]

, and the manual

operation menu will be displayed. For the manual operation, each
servo on/off control and adjustment can be executed manually.

In using the manual operation menu, take care of the following
points. These commands do not provide protection, thus requiring
correct operation. The sector address or time code field is
displayed when a disc is loaded.

Basic operation (controllable from front panel or remote
commander)

[POWER]

Power OFF

[STOP]

Servo stop

[OPEN/CLOSE]

Stop+Eject/Loading

[RETURN]

Return to Operation Menu or Test Mode
Menu

[NEXT]

, 

[PREV]

Transition between sub modes of menu

[1]

 to 

[9]

, 

[0]

Selection of menu items

Cursor UP/DOWN Increase/Decrease in manually adjusted

value

Disc Check

1. SL Disc Check

2. CD Disc Check

3. DL Disc Check

0. Reset SLED TILT

Disc Type

1. Disc Type Auto Check

2. DVD SL

12 cm

3. DVD DL

12 cm

4. CD

12cm

5. LCD

12 cm

6. DVD SL

8 cm

7. DVD DL

8 cm

8. CD

8 cm

9. LCD

8 cm

0. Reset SLED TILT

EMG. 00

Disc Type

1. Disc Type Auto Check

2. DVD SL

12 cm

3. DVD DL

12 cm

4. CD

12cm

5. SACD

12 cm

6. DVD SL

8 cm

7. DVD DL

8 cm

8. CD

8 cm

9. SACD

8 cm

0. Reset SLED TILT

SA.------ SI.-- EMG. 00

DVD SL 12 cm

On this screen, the mirror time is measured and written to the
EEPROM to check the disc type. First, set a DVD SL disc and
press 

[1]

, then set a CD disc and press 

[2]

, and finally set a DVD

DL disc and press 

[3]

. The measured mirror time is displayed

respectively.
The adjustment must be executed more than once after default
data were written.
Reference value for DVD is from 10 to 20, and for CD, from 28
to 4F. Check that the value of CD is larger than that of DVD.
When those values are beyond a range perform this adjustment
again.
From this screen, you can go to another mode by pressing

[NEXT]

 or 

[PREV]

 key, but you cannot enter this mode from

another mode.
You can enter this mode from the Operation Menu screen only.

On this screen, select the disc type. To select the disc type, press
the number of the loaded disc. The selected disc type is displayed
at the bottom. Selecting 

[1]

 automatically selects and displays the

disc type. In case of wrong display, retry “Disc Check Memory”.
Also, ejecting the disc causes the set disc type to be cleared. In
this case, set the disc type again after loading.
In performing manual operation, the disc type must be set.
Once the disc type has been selected, the sector address or time
code display field will appear as shown below. These values are
displayed when PLL is locked.

Disc Type

1. Disc Type Auto Check

2. DVD SL

12 cm

3. DVD DL

12 cm

4. CD

12cm

5. LCD

12 cm

6. DVD SL

8 cm

7. DVD DL

8 cm

8. CD

8 cm

9. LCD

8 cm

0. Reset SLED TILT

TC.---:---:--- EMG. 00

CD   12 cm

Servo Control

1. LD

Off R.Sled FWD

2. SP

Off L.Sled REV

3. Focus

Off

4. TRK.

Off

5. Sled

Off

6. CLVA

Off

7. FCS. Srch

Off

0. Reset SLED TILT

SA.------ SI.-- EMG. 00

DVD SL 12 cm

[0]

Reset SLED TILT Reset the Sled and Tilt to initial

position.

[1]

Disc Type Check

Judge automatically the loaded disc. As
the judged result is displayed at the
bottom of screen, make sure that it is
correct.
If Disc Check Memory menu has not
been executed after EEPROM default
setting, the disc type cannot be judged.
In this case, return to the initial menu
and make a check for three types of
discs (SL, DL, CD).

[2]

 to 

[9]

Select the loaded disc. The adjusted
value is written to the address of
selected disc. No further entry is
necessary if 

[1]

 was selected.

On this screen, the servo on/off control necessary for replay is
executed. Normally, turn on each servo from 1 sequentially and
when CLVA is turned on, the usual trace mode becomes active. In
the trace mode, DVD sector address or CD time code is
displayed.
This is not displayed where the spindle is not locked.
The spindle could run overriding the control if the spindle system
is faulty or RF is not present. In such a case, do not operate
CLVA.

Tracking/Layer Jump

1. 1Tj FWD

R. Fj (L1 

→ L0)

2. 1Tj REV

L. Fj (L0 

→ L1)

3. 2Tj FWD

U. Lj (L1 

→ L0)

4. 2Tj REV

D. Lj (L0 

→ L1)

5. NTj FWD

6. NTj REV

7. 500Tj FWD

8. 500Tj REV

9. 10k/20k FWD

0. 10k/20k REV

SA.------ SI.-- EMG. 00

DVD SL 12 cm

[0]

Reset SLED TILT Reset the Sled and Tilt to initial

position.

[1]

LD

Turn ON/OFF the laser.

[2]

SP

Turn ON/OFF the spindle.

[3]

Focus

Search the focus and turn on the focus.

[4]

TRK

Turn ON/OFF the tracking servo.

[5]

Sled

Turn ON/OFF the sled servo.

[6]

CLVA

Turn ON/OFF normal servo of spindle
servo.

[7]

FCS. Srch

Apply same voltage as that of focus
search to the focus drive to check the
focus drive system.

Sled FWD

Move the sled outward. Perform this
operation with the tracking servo turned
off.

Sled REV

Move the sled inward. Perform this
operation with the tracking servo turned
off.

On this screen, track jump, etc. can be performed. Only for the
DVD-DL, the focus jump and layer jump are displayed in the
right field.

[1]

1Tj FWD

1-track jump forward.

[2]

1Tj REV

1-track jump reverse.

[3]

2Tj FWD

2-track jump forward.

[4]

2Tj REV

2-track jump reverse.

[5]

NTj FWD

N-track jump forward.

[6]

NTj REV

N-track jump reverse.

[7]

500Tj FWD

Fine search forward.

[8]

500Tj REV

Fine search reverse.

[9]

10k/20k FWD

Direct search forward.

[0]

10k/20k REV

Direct search reverse.

- The following commands are valid for DVD-DL disc only -
Fj (L1 

→ L0)

Focus jump forward.
(Trk/Sled Servo OFF)

Fj (L0 

→ L1)

Focus jump reverse.
(Trk/Sled Servo OFF)

Lj (L1 

→ L0)

Layer jump forward.
(Trk/Sled Servo ON)

Lj (L0 

→ L1)

Layer jump reverse.
(Trk/Sled Servo ON)

Manual Adjustment

1. TRK. Offset

2. Focus Gain

3. TRK. Gain

4. Focus Offset

5. Focus Balance

6. L.F. Offset

7. EQ BOOST

8. GD ADJ

Adjustment : Up/Down

Jitter 1D

SA.------ SI.-- EMG. 00

DVD SL 12 cm

Auto Adjustment

1. Auto TRK. Offset

2. Auto Focus Balance

3. Auto Focus Offset

4. Auto Focus Gain

5. Auto TRK. Gain

6. Auto EQ

7. Auto L.F. Offset

8. Auto Group Delay

SA.------ SI.-- EMG. 00

DVD SL 12 cm

EEPROM DATA 1

-– DL -–

CD LCD

SL

L0

L1

Focus Gain

xx xx

xx

xx

xx

TRK. Gain

xx xx

xx

xx

xx

FCS Balance

xx xx

xx

xx

xx

Focus Bias

xx xx

xx

xx

xx

TRV. Offset

xx xx

xx

xx

xx

L.F. Offset

xx xx

xx

xx

xx

EQ Boost

xx xx

xx

xx

xx

Mirror Time

xx --

xx

xx

_

DOWN : Next Data

CLEAR: Default Set

page. 1/2

EEPROM DATA 2

-– DL -–

CD LCD

SL

L0

L1

RF Jitter

xx --

xx

xx

xx

RF Level

xx --

xx

--

--

FE Level

xx --

xx

--

--

FE Balance

xx --

xx

--

--

TRV. Level

xx --

xx

--

--

Analog FRSW

xx xx

xx

xx

xx

PLL Dac Gain

xx xx

xx

xx

xx

_

UP : Prev Data

CLEAR: Default Set

page. 2/2

[1]

Auto TRK.

Offset Adjusts tracking offset.

[2]

Auto Focus Balance

Adjusts focus balance.

[3]

Auto Focus Offset

Adjusts focus offset.

[4]

Auto Focus Gain

Adjusts focus gain.

[5]

Auto TRK.

Gain Adjusts track gain.

[6]

Auto EQ

[7]

Auto L.F. Offset

Adjusts loop filter offset.

[8]

Auto Group Delay

On this screen, current servo adjusted data stored in the EEPROM
are displayed. The adjusted data are initialized by pressing the

[CLEAR]

 key, but be careful that they are not recoverable after

initialization.
Before clearing the adjusted data, make a note of the set data.
This screen will also appear if 

[0]

 All is selected in the Drive

Auto Adjustment. In this case, default setting cannot be made.
For reference, the drive has been designed so that the gain center
value is 20 and offset value is 80. Other values will be in a range
of 10 to 80. If extreme value such as 00 or FF is set, adjustment
will be faulty. In such a case, check for disc scratch or cable
disconnection, then perform adjustment again.

On this screen, each item can be adjusted manually. Select the
desired number 

[1]

 to 

[8]

 from the remote commander, and

current setting for the selected item will be displayed, then
increase or decrease numeric value with 

 key or 

 key. This

value is stored in the EEPROM. If CLV has been applied, the
jitter is displayed for reference for the adjustment.

[1]

TRK. Offset

Adjusts tracking offset.

[2]

Focus Gain

Adjusts focus gain.

[3]

TRK.Gain

Adjusts track gain.

[4]

Focus Offset

Adjusts focus offset.

[5]

Focus Balance

Adjusts focus balance.

[6]

L.F. Offset

Adjusts loop filter offset.

[7]

EQ BOOST

[8]

GD ADJ

On this screen, each item can be adjusted automatically. Select
the desired number 

[1]

 to 

[8]

 from the remote commander, and

selected item is adjusted automatically.