6-18
7. After adjusting, set the COMMAND SW of the controller to track-
ing on, and press the TEST button.
6-3-4-12. EF Balance
Note:
•
Before performing electrical block checks, solder a lead wire to
TP RF (CL428), TP VC (CL403), and TP TE (CL407) of the MA-
C22 board.
•
Chuck the disk (YEDS-18) beforehand.
•
Refer to 6-3-4-1. and set the test mode.
•
Insert a SONY test disc (YEDS-18) into the test drive.
1. Connect the oscilloscope to TP TE (CL407) and TP VC (CL403)
of the MA-C22 board.
2. Set the COMMAND SW of the controller to INITIALIZE and
press the TEST button.
ID2
L
ID1
L
ID0
L
PARITY
L
3. Set the COMMAND SW of the controller to x1 speed, and press
the TEST button.
ID2
L
ID1
L
ID0
L
PARITY
H
4. Set the COMMAND SW of the controller to Play Audio (23’47”),
and press the TEST button.
ID2
L
ID1
H
ID0
L
PARITY
H
5. Set the COMMAND SW of the controller to tracking off, and
press the TEST button.
ID2
H
ID1
L
ID0
L
PARITY
L
6. The oscilloscope waveform should be symmetrical at the top and
bottom in respect to 0V (VC).
Check that the DC voltage A is within ±0.125V from 0V (VC).
A (DC voltage)
0V (VC)
ID2
L
ID1
H
ID0
H
PARITY
H
Center of the waveform
6-3-4-13. RF Level
Note:
•
Before performing electrical block checks, solder a lead wire to
TP RF (CL428), TP VC (CL403), and TP TE (CL407) of the MA-
C22 board.
•
Chuck the disk (YEDS-18) beforehand.
•
Refer to 6-3-4-1. and set the test mode.
1. Connect the oscilloscope to TP RF (CL428) and TP VC (CL403)
of the MA-C22 board.
2. Set the COMMAND SW of the controller to INITIALIZE and
press the TEST button.
ID2
L
ID1
L
ID0
L
PARITY
L
3. Set the COMMAND SW of the controller to x1 speed, and press
the TEST button.
ID2
L
ID1
L
ID0
L
PARITY
H
4. Set the COMMAND SW of the controller to Play Audio (23’ 47”),
and press the TEST button.
ID2
L
ID1
H
ID0
L
PARITY
H
5. Check that the oscilloscope waveform is clear, and the RF level is
proper.
* A clear RF signal waveform is as follows.
level : 0.9V ~1.6 V
(RF Level Specification)
White
Red
Gr
a
y
Gr
a
y
Gr
a
y
Gr
a
y
White
Bro
wn
Blac
k
Y
ello
w
Blue
D1
D2
EJECT (SW3)
TEST (SW2)
UNCHUCK
(RED)
COMMAND SW (SW1)
H
L
ID2
ID1
ID0
P
ARITY
to CN56
to CNJ202
to CNJ202
CHUCK
(GREEN)
Summary of Contents for CDL1100
Page 8: ...6 7 Power Supply Power Cord SONY Test Disc YEDS 18 CDL1100 CDM 47 Controller Function check ...
Page 44: ...CDL1100 CD ROM DRIVE CDM 47 2 2 SECTION 7 23 7 24 ...
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