HCD-DP900D - Sony Audio Service Manual (repair manual). Page 10

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 Reset

Reset the Sled and Tilt to initial posi-
tion.

[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 op-
eration with the tracking servo turned
off.

↑ Tilt UP

Move the tilt upward.

↓ Tilt DOWN

Move the tilt downward.

The following menus are normally not used.

The persons who do not know well about these menus should not
use them.

EEPROM DATA

CD

– DVD –

ID No. 00

SACD

SL

L0

L1

Focus Gain

xx xx

xx

xx

xx

TRK. Gain

xx xx

xx

xx

xx

Focus Offset xx xx

xx

xx

xx

TRK. Offset

xx xx

xx

xx

xx

L. F. Offset xx xx

xx

xx

xx

EQ Boost

xx xx

xx

xx

xx

Jitter

xx xx

xx

xx

xx

Mirror Time

xx xx

xx

xx

xx

_
CLEAR: Default Set

This screen displays current servo adjusted data stored in the
EEPROM. Though adjusted data can be initialized with the

[CLEAR]

 key, they cannot be restored after initialization.

So, before clearing, make a note of the adjusted data.
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 dis-
connection, then perform adjustment again.

### Aging Test MENU ###

Operation Menu

1. Changer Open/Close Test

2. Changer Exchange Test

                  Exit: RETURN

On the Test Mode Menu Screen, selecting 

[3]

 executes the aging

of the mechanism. Changer Open/Close Test or Changer Exchange
Test are selected by pressing the 

[1]

 or 

[2]

. During aging, the repeat

cycle is displayed. Aging can be aborted at any time by pressing
the  x  key. After the operation is stopped, press the x  key or

[RETURN]

 key aging to return to the Test Mode Menu.

[1]

Repeat open and close the disc tray from disc 1 to disc 5.

[2]

After press the 

[2]

  key, select the disc number by pressing

some key of 

[1]

 to 

[5]

 and open the disc tray of selected number.

Press the  N  key to start playback the disc.
While playback the disc, repeat open and close the disc tray of
other disc.

### EMG. History ###

Laser Hours

CD

xxxxxxxh

DVD

xxxxxxxh

1. 00 00 00 00 00 00 00 00
   00 00 00 00 00 00 00 00

2. 00 00 00 00 00 00 00 00
   00 00 00 00 00 00 00 00

Select: 1 – 9

Scroll: UP/DOWN

(1: Last EMG.)

Exit: Return

On the Test Mode Menu screen, selecting 

[4]

 displays the infor-

mation such as servo emergency history. The history information
from last 1 up to 10 can be scrolled with 

↑ key or ↓ key. Also,

specific information can be displayed by directly entering that
number with ten keys.

The upper two lines display the laser ON total hours. Data below
minutes are omitted.

Clearing History Information

Clearing laser hours
Press 

[DVD DISPLAY]

 and 

[CLEAR]

 keys in this order.

Both CD and DVD data are cleared.
Clearing emergency history
Press 

[TITLE]

 and 

[CLEAR]

 keys in this order.

Initializing set up data
Press 

[DVD MENU]

 and 

[CLEAR]

 keys in this order.

The data have been initialized when “Set Up Initialized” mes-
sage is displayed. The EMG. History screen will be restored
soon.

SLED TILT