HCD-GN77D - Sony Audio Service Manual (repair manual). Page 5

5

Mirr Count : The number of times which mirror counts between

disc surface and record surface when disc type judg-
ing.

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

of each layer when lens down.

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)

[8]

: DVD-RW disc (8 cm)

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)

Note: 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.

[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

 2.  1Tj

REV

 3.500Tj Fine

FWD

 4.500Tj Fine

REV

 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 in-
crease or decrease numeric value with the O key or  o key. If
CLV has been applied, the jitter is displayed for reference for the
adjustment.