6-3-4-12. EF Balance6-3-4-13. RF Level
Note:Note:
Y Before performing electrical block checks, solder a lead wire toY Before performing electrical block checks, solder a lead wire to
TP RF (CL428), TP VC (CL403), and TP TE (CL407) of the MA-TP RF (CL428), TP VC (CL403), and TP TE (CL407) of the MA-
C22 board.C22 board.
Y Chuck the disk (YEDS-18) beforehand.Y Chuck the disk (YEDS-18) beforehand.
Y Refer to 6-3-4-1. and set the test mode.Y Refer to 6-3-4-1. and set the test mode.
Y Insert a SONY test disc (YEDS-18) into the test drive.
1. Connect the oscilloscope to TP RF (CL428) and TP VC (CL403)
1. Connect the oscilloscope to TP TE (CL407) and TP of the MA-C22 board.VC (CL403)
of the MA-C22 board.2. Set the COMMAND SW of the controller to INITIALIZE and
2. Set the COMMAND SW of the controller to INITIALIZE andpress the TEST button.
press the TEST button.
ID2ID1ID0PARITY
ID2ID1ID0PARITYLLLL
LLLL
3. Set the COMMAND SW of the controller to x1 speed, and press
3. Set the COMMAND SW of the controller to x1 speed, and pressthe TEST button.
the TEST button.
ID2ID1ID0PARITY
ID2ID1ID0PARITYLLLH
LLLH
4. Set the COMMAND SW of the controller to Play Audio (23O 47�),
4. Set the COMMAND SW of the controller to Play Audio (23O47�),and press the TEST button.
and press the TEST button.
ID2ID1ID0PARITY
ID2ID1ID0PARITYLHLH
LHLH
5. Check that the oscilloscope waveform is clear, and the RF level is
5. Set the COMMAND SW of the controller to tracking off, and
proper.
press the TEST button.
* A clear RF signal waveform is as follows.
ID2ID1ID0PARITY
HLLL
6. The oscilloscope waveform should be symmetrical at the top andlevel : 0.9V ~1.6 V
bottom in respect to 0V (VC).(RF Level Specification)
Check that the DC voltage A is within ?0.125V from 0V (VC).
Center of the waveform
to CNJ202to CN56
A (DC voltage)
0V (VC)
to CNJ202White
RedBlue YellowBlack BrownWhite Gray Gray Gray Gray
7. After adjusting, set the COMMAND SW of the controller to track-
ing on, and press the TEST button.
ID2ID1ID0PARITY
LHHH
ID2ID1ID0PARITYUNCHUCKCHUCK
H(RED)(GREEN)
D1D2
L
COMMAND SW (SW1)
EJECT (SW3)
TEST (SW2)
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