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Radial Tilt Circuit Adjustment - Pioneer DVR-104 Service Manual

Pioneer dvd-r/rw; cd-r/rw writer
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6.2.4 Radial Tilt Circuit Adjustment

QQ
3 7 63 1515 0
Objective
Symptom when out
of adjustment
Measurement Instru-
ment connections
Adjustment standard
value
[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)
"+100000+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)
TE
L 13942296513
"RJ" (REJECT)
• Clamp the recorded DVD-ROM (Single) disc.
"3DT" (Selects DVD-ROM (Single) mode)
"1XN" (Set the CLV 1th speed)
"+100000+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)
(2) CD
• Clamp the Recorded CD-R disc.
"1DT" (Selects CD-R mode)
"+200000+PL" (Search for 20 minutes)
"2000XN" (Set the 2000RPM_CAV mode)
"+99400000+FR" (Tilt automatic adjustment.)
if it ends ("R" is returned)
"RJ" (REJECT)
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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).
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.
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2 9
8
Player state
Adjustment
location
Disc
Q Q
3
6 7
1 3
1 5
co
.
DVR-104
7
9 4
2 8
PLAY, Tilt servo ON
Set the tilt error value with the command
input.
New DVD-RW disc
(GGV1050)
Recorded CD-R disc
(GGV1067)
DVD-ROM (Single) disc
(GGV1035)
DVD-ROM (Dual) disc
(GGV1036)
0 5
8
2 9
9 4
2 8
m
8
9 9
A
B
C
9 9
D
E
F
43
8
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