14
RD-VH7
ADJUSTMENT
CD section
NO.
ITEM
INPUT
SETTINGS
OUTPUT
SETTINGS
CD PLAYER
SETTINGS
ALIGNMENT
ALIGN FOR
FIG.
TEST MODE : While pressing the PLAY/PAUSE key ,plug the power cord into the AC power wall output.
Insert TEST DISC.
[1]
LASER CURRENT
CHECK
Test disc
type 4
Set the tester across
R502(1
Ω
) on the
PCB(X09:D/4) of CD
mechanism .
Press the PLAY/PAUSE
key to check that the
display is 03 or05.
-
50
±
20mA
[2]
FOCUS ERROR
BIAS
(Set up vertically)
Test disc
type 4
Connect an oscilloscope
and jitter meter as follows.
CH1:RF(CN402:7pin)
CH2:FE1(CN402:6pin)
GND:VC(CN402:4pin)
Press the PLAY/PAUSE
key . Confirm that the
display is 05.
FE BIAS
VR401
Optimum eye pattern
[3]
FOCUS ERROR
BIAS
(Set up vertically)
Test disc
type 4
Connect an oscilloscope
and jitter meter as follows.
RF IN:RF(CN402:7pin)
CH2:FE1(CN402:6pin)
GND:VC(CN402:4pin)
Press the PLAY/PAUSE
key . Confirm that the
display is 05.
FE BIAS
VR401
Jitter level minimum
[4]
FOCUS ERROR
BIAS
(Set up horizontally)
Test disc
type 4
Connect an oscilloscope
and jitter meter as follows.
CH1:RF(CN402:7pin)
CH2:FE1(CN402:6pin)
GND:VC(CN402:4pin)
Press the PLAY/PAUSE
key . Confirm that the
display is 05.
FE BIAS
VR400
Optimum eye pattern
[5]
FOCUS ERROR
BIAS
(Set up horizontally)
Test disc
type 4
Connect an oscilloscope
and jitter meter as follows.
RF IN:RF(CN402:7pin)
CH2:FE1(CN402:6pin)
GND:VC(CN402:4pin)
Press the PLAY/PAUSE
key . Confirm that the
display is 05.
FE BIAS
VR400
Jitter level minimum
Note:
• Type 4disc: SONY YDS-18 Test Disc or equivalent.
• This unit needs to be adjusted by Jitter meter.
• Keep the step of adjustment.
1p
99.10.30
3:08
PM
y [ W 10
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