DOWNLOAD Sony DAV-EA20 / HCD-EA20 Service Manual ↓ Size: 9.72 MB | Pages: 101 in PDF or view online for FREE

21

Press the 

[1]

 key on the remote commander and insert a DVD single

layer disc following the message. Then the adjustment will be made
through the steps below, then adjusted values will be written to the
EEPROM.

1.

Sled tilt reset

2.

Disc check memory SL

3.

Wait 300 msec

4.

Set disc type SL

5.

LD on

6.

Spindle start

7.

Wait 1 sec

8.

Focus servo on 0

9.

Auto track offset adjust

10. CLVA on
11. Wait 500 msec
12. Tracking on
13. Wait 1 sec
14. Sled on
15. Check CLV on
16. Auto LFO adjust
17. Auto focus offset adjust
18. Auto tilt position adjust
19. Auto focus gain adjust
20. Auto focus offset adjust
21. EQ boost adjust
22. Auto loop filter offset adjust
23. Auto track gain adjust
Search Check

24. 32 track jump forward
25. 32 track jump reverse
26. 500 track jump forward
27. 500 track jump reverse

28. All servo stop
29. EEP copy loop filter offset

Press the 

[2]

 key on the remote commander and insert a CD disc

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

1.

Sled tilt rest

2.

Disc check memory CD

3.

Wait 500 msec

4.

Set disc type CD

5.

LD on

6.

Spindle start

7.

Wait 500 msec

8.

Focus servo on 0

9.

Auto track offset adjust

10. CLVA on
11. Wait 500 msec
12. Tracking on
13. (TC display start)
14. Wait 1 sec
15. Jitter display start
16. Sled ON
17. Check CLV on
18. Auto loop filter offset adjust
19. Auto focus offset adjust
20. Auto focus gain adjust
21. Auto focus offset adjust
22. EQ boost adjust
23. Auto LFO Adjust

24. Auto track gain adjust
Search Check

25. 32Tj forward
26. 32Tj reverse
27. 500Tj forward
28. 500Tj reverse

29. All servo stop

Press the 

[3]

 key on the remote commander and insert a DVD dual

layer disc following the message. Then the adjustment will be made
through the steps below, then adjusted values will be written to the
EEPROM.

1.

Sled tilt reset

2.

Disc check memory DL

3.

Wait 500 msec

4.

Set disc type DL

5.

LD on

6.

Spindle start

7.

Wait 1 sec

Layer 1 Adjust

8.

Focus servo on 0

9.

Auto track offset adjust

10. CLVA on
11. Wait 500 msec
12. Tracking on
13. Wait 500 msec
14. Sled on
15. Check CLV lock
16. Auto loop filter offset adjust, Auto focus adjust
17. Auto focus gain adjust
18. Auto focus offset adjust
19. EQ boost adjust
20. Auto loop filter offset adjust
21. Auto Track Gain Adjust
Search Check

22. 32 track jump forward
23. 32 track jump reverse
24. 500 track jump forward
25. 500 track jump reverse

Layer 0 Adjust

26. Focus jump (L1 

t L0)

27. Auto track offset adjust L0
28. CLVA on
29. Wait 500 msec
30. Tracking on
31. Wait 500 msec
32. Sled on
33. Check CLV lock
34. Auto focus filter offset adjust
35. Auto Focus Adjust
36. Auto focus gain adjust
37. Auto focus offset adjust
38. EQ boost adjust
39. Auto Loop Filter Offset
40. Auto track gain adjust
Search Check

41. 32 track jump forward
42. 32 track jump reverse
43. 500 track jump forward
44. 500 track jump reverse

Layer Jump Check

45. Layer jump (L0 

t L1)

46. Layer jump (L1 

t L0)

47. All servo stop

22

 This mode is used for design, and not used in service fundamen-

tally.

On the Test Mode Menu screen, press the 

[2]

 key on the remote

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

## Drive Manual Operation ##

Operation Menu

 1. Disc Type

 2. Servo Control

 3. Track/Layer Jump

 4. Non EEPROM Write Adjust

 5. EEPROM Write Adjust

 6. Memory Check

 7. Disc Check Memory

 8. Error Rate Display

 9. SACD Water Mark

Exit: RETURN

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.

1. Set correctly the disc type to be used on the Disc Type screen.
2. In case of an alarm, immediately press the  

x

  button to stop the

servo operation, and press the  POWER  button to turn the power
off.

Basic operation:
(controllable from front panel or remote commander)
 POWER /

 

@/1

: Power OFF (release the Test Mode)

 x

: Servo stop

 

A

: Stop and eject/Loading

[RETURN]

: Return to Operation Menu or Test

Mode Menu

[       PREV]

, 

[NEXT      ]

: Transition between sub modes of menu

[1] to [9], [10/0]

: Selection of menu items

Cursor  o / O

: Increase/Decrease in manually

adjusted value

>

.

Disc Type

Disc Type Select

 1. Disc Type Auto Check

 2. Set Disc Type DVD

 3. Set Disc Type CD

 4. Set Disc Type Hybrid

Exit: RETURN

2-1-1. Disc Type Auto Check
1)

Press the 

[1]

 key on the remote commander to display the Disc

Type Auto Check screen.

2)

Insert a disc and press the 

[ENTER]

  key on the remote

commander.

3)

It judges the type of inserted disc automatically and displays
the disc type and so on as below.

Disc Type Auto Check

 Disc Type

xx

 Layer

xx

 Mirr Time

xx

 Mirr Count

xx

 FZC Count

xx

 PI Reference

xx

 PI Peak

xx

 ENTER.Execute

Exit: RETURN

Disc Type

: CD, DVD or Hybrid (SACD)

Layer

: SINGLE, DUAL or HYBRID

Mirr Time

: Mirror time of between disc surface and record

surface when disc type judgment. (hexadecimal
number)

Mirr Count : The number of times which mirror counts between

disc surface and record surface when disc type
judging. (hexadecimal number)

FZC Count : The number of times which focus zero cross points

of each layer when lens down. (hexadecimal number)

PI Reference : The average of PI reference voltage. (hexadecimal

number)

PI Peak

: PI peak level voltage. It performs only when disc

type judgment is successful. (hexadecimal number)

2-1-2. Disc Type DVD
It sets up so that it may judge as a disc type of specification of the
disc with which the set was inserted.

[1]

: DVD single layer disc (12 cm)

[2]

: DVD dual layer disc (0 layer, 12 cm)

[3]

: DVD dual layer disc (1 layer, 12 cm)

[4]

: DVD-RW disc (12 cm)

[5]

: DVD single layer disc (8 cm)

[6]

: DVD dual layer disc (0 layer, 8 cm)

[7]

: DVD dual layer disc (1 layer, 8 cm)

23

2-1-3.

Disc Type CD

It sets up so that it may judge as a disc type of specification of the
disc with which the set was inserted.

[1]

: CD disc (normal speed, 12 cm)

[2]

: CD disc (double speed, 12 cm)

[3]

: CD disc (normal speed, 8 cm)

[4]

: CD disc (double speed, 8 cm)

[5]

: CD-RW disc (normal speed, 12 cm)

[6]

: CD-RW disc (double speed, 12 cm)

[7]

: CD-RW disc (normal speed, 8 cm)

[8]

: CD-RW disc (double speed, 8 cm)

2-1-4. Disc Type Hybrid
It sets up so that it may judge as a disc type of specification of the
disc with which the set was inserted.

[1]

: SACD Hybrid disc (SACD layer, 12 cm)

[2]

: SACD Hybrid disc (CD layer, normal speed, 12 cm)

[3]

: SACD Hybrid disc (CD layer, double speed, 12 cm)

[4]

: SACD Hybrid disc (SACD layer, 8 cm)

[5]

: SACD Hybrid disc (CD layer, normal speed, 8 cm)

[6]

: SACD Hybrid disc (CD layer, double speed, 8 cm)

 Be sure to perform the disc type setup before performing this item.

Servo Control

 1.LD

off R.Sled FWD

 2.Focus

off L.Sled REV

 3.SPDL

off U.Sled Reset

 4.CLVA

off D.Sled Limit

 5.Trk.

off

 6.Sled

off

 7.Fcs.Srch

off

 0.All Servo Off

Exit: RETURN

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.

[1]

 LD

: Turn on/off the laser.

[2]

 Focus

: Search the focus and turn on the focus.

[3]

 SPDL

: Turn on/off the spindle.

[4]

 CLVA

: Turn on/off normal servo of spindle servo.

[5]

 Trk.

: Turn on/off the tracking servo.

[6]

 Sled

: Turn on/off the sled servo.

[7]

 FCS. Srch : Turn on/off the focus search.

[8]

 FCS. OppL : Turn on/off the focus search to another layer

of designated layer in Disc Type setting. (dual
layer disc only)

[10/0]

: All servo off.

[R]

 Sled FWD (right cursor) : Move the sled forward.

[L]

 Sled REV (left cursor)

: Move the sled reverse.

[U]

 Sled FWD (up cursor)

: Reset the sled.

[D]

 Sled REV (down cursor) : Limit in the sled.

Track/Layer Jump

 1.  1Tj

FWD R.Lj L0>L1

 2.  1Tj

REV L.Lj L1>L0

 3.500Tj Fine

FWD U.Fj L0>L1

 4.500Tj Fine

REV D.Fj L1>L0

 5.10kTj Dirc

FWD

 6.10kTj Dirc

REV

 7.20kTj Dirc

FWD

 8.20kTj Dirc

REV

 0. All Servo Off

Exit: RETURN

On this screen, track jump, etc. can be performed. Only for the DVD
dual layer disc, 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]

 500Tj FWD: 500 track jump (fine search)forward.

[4]

 500Tj REV : 500 track jump (fine search) reverse.

[5]

 10kTj FWD: 10k track jump (direct search) forward.

[6]

 10kTj REV : 10k track jump (direct search) reverse.

[7]

 20kTj FWD: 20k track jump (direct search) forward.

[8]

 20kTj REV : 20k track jump (direct search) reverse.

[10/0]

: All servo off.

Non EEPROM Write Adjust

 1. Focus Offset

 2. Focus Gain

 3. Trk.

Offset Coarse

 4. Trk.

Offset Fine

 5. Trk.

Gain

 6. EQ

Boost

 0.All Servo Off

Exit: RETURN

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

[1]

  to 

[10/0]

  from the remote commander, and current

setting for the selected item will be displayed, then increase or
decrease numeric value with the O key or  o key. This value is
stored in the EEPROM. If CLV has been applied, the jitter is
displayed for reference for the adjustment.

[1]

 Focus Offset : Adjusts focus offset.

[2]

 Focus Gain : Adjusts focus gain.

[3]

 TRK. Offset : Adjusts tracking offset of the RF amp

(IC001) side.

[4]

 TRK. Offset : Adjusts tracking offset of the DSP (IC401)

side.

[5]

 TRK. Gain : Adjusts track gain.

[6]

 EQ Boost

: Adjusts amount of boost of equalizer.

[10/0]

: All servo off.

24

Disc Check Memory

 1. SL Disc check

 2. CD Disc check

 3. DL Disc check

Exit: RETURN

On this screen, measure the mirror time of chucked disc, and write
to the EEPROM.

Error Rate Display

UC

CR

Address

PI1 Err

Now xx xxxx xxxxxxxx

Max xx xxxx xxxxxxxx

Avg xx xxxx

PI2 Err

Now xx xxxx xxxxxxxx

Max xx xxxx xxxxxxxx

Avg xx xxxx

PO  Err

Now xx xxxx xxxxxxxx

Max xx xxxx xxxxxxxx

Avg xx xxxx

 

Start:ENTER

Exit: RETURN

On this screen, measure and display the error rate.

UC : Incorrect value
CR : Correct value

SACD Water Mark Check

 PSP AMP

 PSN

 Start: ENTER

Exit: RETURN

On this screen, measure the PSP AMP value and PSN value of SACD
water mark.

EEPROM Write Adjust

 1. Focus

Offset

 2. Focus

Gain

 3. Trk.

Offset Coarse

 4. ——————

 5. Trk.

Gain

 6. EQ

Boost

 0.All Servo Off

Exit: RETURN

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

[1]

  to 

[10/0]

  from the remote commander, and

selected item is adjusted automatically.

[1]

 Focus Offset : Adjusts focus offset.

[2]

 Focus Gain : Adjusts focus gain.

[3]

 TRK. Offset : Adjusts tracking offset of the RF amp

(IC001) side.

[5]

 TRK. Gain : Adjusts track gain.

[6]

 EQ Boost

: Adjusts amount of boost of equalizer.

[10/0]

: All servo off.

Display images are shown as follows, and all two screens are able
to switch by the O key (UP) or  o key (DW).

EEPROM Data 1/2

CD

SL

L0

L1

Focus

Gain

xx

xx

xx

xx

Trk.

Gain

xx

xx

xx

xx

Focus

Offset

xx

xx

xx

xx

Trk.

Offset

xx

xx

xx

xx

EQ.

Boost

xx

xx

xx

xx

PI

Level

xx

xx

--

--

Fcs. Balance

--

xx

--

--

Jitter

xx

xx

xx

xx

Mirror Time

xx

xx

xx

--

FE Level

--

xx

--

--

Traverse Lv1.

--

xx

--

--

Next:DW Default:CLR

Exit:RET

EEPROM Data 2/2

CDRW DVDRW

Focus

Gain

xx

xx

Trk.

Gain

xx

xx

Focus

Offset

xx

xx

Trk.

Offset

xx

xx

EQ.

Boost

xx

xx

Prev:UP Default:CLR

Exit:RET

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.