Sony DVP-NW50 Service Manual page 21

4. CD Vertical Deviation 1.0 mA check
[TEST DISC]
TCD-731RA (CD) :Part No. J-2501-059-A
Procedure:
1. Turn the power on.
2. Put the test disc (TCD-731RA) into playback the number
fifteen track.
3. Play the test disc (TCD-731RA) back and confirm that the
disc is played back normally without any problem.
5. CD Eccentricity 140 µm check
[TEST DISC]
TCD-712R (CD) :Part No. J-2501-260-A
Procedure:
1. Turn the power on.
2. Put the test disc (TCD-712R) into playback the number one
track.
3. Play the test disc (TCD-712R) back and confirm that the disc
is played back normally without any problem.
6. CD-RW Low Reflection Disc check
[TEST DISC]
TCD-W082L (CD-RW) :Part No. J-2501-063-2
Procedure:
1. Turn the power on.
2. Put the test disc (TCD-W082L) into playback the number one
track.
3. Play the test disc (TCD-W082L) back and confirm that the
disc is played back normally without any problem.
7. CD-RW Finger Print Disc check
[TEST DISC]
TCD-W025W (CD-RW) :Part No. J-2501-284-A
Procedure:
1. Turn the power on.
2. Put the test disc (TCD-W025W) into playback the number
thirteen track.
3. Play the test disc (TCD-W025W) back and confirm that the
disc is played back normally without any problem.
8. DVD-Video SL Eccentricity 100 µm check
[TEST DISC]
TDV-512C (DVD) :Part No. J-2501-285-A
Procedure:
1. Turn the power on.
2. Put the test disc (TDV-512C) into playback the number one
track.
3. Play the test disc (TDV-512C) back and confirm that the disc
is played back normally without any problem.
Checking Location: DVD SERVO board (Side B)
DVD SERVO BOARD
DVP-NW50
(SIDE B)
CN1 pin 4 (GND)
R38
1
5
IOP (CD)
Check
R37
IOP (DVD)
Check
TP18
RFOP
21