DVR-104
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6.2.4 Radial Tilt Circuit Adjustment
[Procedure]
(1) DVD
"3TL" (Initialize the tilt)
• Enters code "4TL" in the state that does not clamp a disc.
• Calmp the unrecorded DVD-RW disc and enters code "5TL".
• Calmp the DVD-ROM (Dual) disc and enters code "6TL".
• Calmp the DVD-ROM (Single) disc.
"3DT" (Selects DVD-ROM (Single) mode)
"1XN" (Set the CLV normal speed)
"+PL" (Search for address 100000h)
• Connect the jitter meter to RFEQOUT.
"1TL" (Tilt UP) / "2TL" (Tilt Down). Jitter of T edge looks for the point which becomes the minimum.
"7TL" (Obtain the TILT TARGET)
"RJ" (REJECT)
• Clamp the recorded DVD-ROM (Single) disc.
"3DT" (Selects DVD-ROM (Single) mode)
"1XN" (Set the CLV 1th speed)
"+PL" (Search for address 100000h)
• Connect the jitter meter to RFEQOUT.
"1TL" (Tilt UP) / "2TL" (Tilt Down). Jitter of T edge looks for the point which becomes the minimum.
"7TL" (Obtain the TILT TARGET)
"RJ" (REJECT)
Connect the total T-jitter meter to
RFEQOUT terminal.
The equalizer of jitter meter is turned
ON.
Jitter meter setup
DVD: 1 x , CD: 4 x
Playback jitter is minimum.
Player state
PLAY, Tilt servo ON
Adjustment
Set the tilt error value with the command
location
input.
Disc
New DVD-RW disc
(GGV1050)
Recorded CD-R disc
(GGV1067)
DVD-ROM (Single) disc
(GGV1035)
DVD-ROM (Dual) disc
(GGV1036)
Measurement Instru-
ment connections
Adjustment standard
value
Objective
Symptom when out
of adjustment
To adjust the target value of tilt servo so that pickup and disc become to be level relatively.
Playback RF waveform is dirty (Playback jitter is defective).
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