Sony SCD-XA9000ES Service Manual page 25

Traverse Check
Connection:
oscilloscope
MAIN board
TP513 (TE) +
–
TP504 (AVC)
Checking Method:
1. Under the condition of S curve waveform check mode in step
[ AMS ]
5, press the l L dial.
2. After "WAIT" is displayed, the traverse waveform check mode
will become active and "TRV MODE ON" will be displayed.
3. Connect an oscilloscope to the TP513 (TE) and TP504 (AVC)
on the MAIN board.
4. Check that the level A and B of waveform on the oscillo-
scope satisfy the specification.
Specified Value:
Disc A B
SATD-S5 or
SATD-S4
0.9 to 1.4 Vp-p –0.1 to +0.1V
PATD-012 or
YEDS-18
Traverse waveform
Center fo the waveform
A
B
VC
Checking and Connecting Location : MAIN Board
RF Level Check
Connection:
oscilloscope
MAIN board
TP703 (RFAC) +
–
TP704 (AGND)
Checking Method:
1. Under the condition of traverse waveform check mode in step
[ AMS ]
4, press the l L dial.
2. Connect an oscilloscope to the TP703 (RFAC) and TP704
(AGND) on the MAIN board.
3. After "WAIT" is displayed, the RF waveform check mode will
become active and "PLAY 5th TRACK" (for the SACD, "RF
MODE ON") will be displayed, and the 5th music on the disc
will be played.
4. Check that the RF waveform is clear and the level satisfies the
specification.
[ AMS ]
5. Press the l L dial (for the SACD, "RF JITTER
(5th)" will be displayed, and further press the AMS dial), and
"OUTSIDE TRACK" will be displayed and the outward track
of the disc will be played.
6. Check that the RF waveform is clear and the level satisfies the
specification.
[ AMS ]
7. Press the l L dial, and "INSIDE TRACK" will be
displayed and the inward track of the disc will be played.
8. Check that the RF waveform is clear and the level satisfies the
specification.
[ AMS ]
9. After checking, press the l L dial, and the test is
over when "BU MEASURE" is displayed.
[OPEN/CLOSE ]
10. Press the A button to open the tray, and re-
move the test disc.
11. Using each type of disc, repeat from step 1 of S curve wave-
form check up to step 10 of RF level check.
[POWER]
12. When the check is over, press the button to turn the
power off.
Note: Take care not to leave the test disc in the set.
Specified Value:
Disc
A
SATD-S5 or
SATD-S4
0.9 to 1.4 Vp-p
PATD-012 or
YEDS-18
RF signal waveform
VOLT/DIV: 200 m V
TIME/DIV: 500 ns
A
Note: Clear RF waveform refers to the waveform where ◊ shapes should
be distinctively observed in the center.
Checking and Connecting Location : MAIN Board
CLV Jitter Check (CD only)
Connection:
oscilloscop e
MAIN board
(CH1)
TP516 (RFCK)
TP517(WFCK)
(CH2)
TP808 (DGND)
Checking Method:
Under the condition of RF level check mode in step 3, connect the
oscilloscope to the TP516 (RFCK) (CH1), TP517 (WFCK) (CH2),
and the TP808 (DGND) (GND) on the MAIN board to check that
the value A of the waveform satisfies the specification.
Note: Take care not to leave the test disc in the set.
Specified Value:
Disc
A
PATD-012 or
35 µsec or less
YEDS-18
CLV jitter waveform
A
Checking and Connecting Location:
– MAIN Board (Component Side) –
TP808
(DGND)
25 25
4-7. i.LINK SIGNAL OPERATION CHECK
Connect the set to a unit equipped with the i.LINK terminal to
check if the bus reset occurs correctly. By this operation, a loose
connection of the connector or a disconnection of the i.LINK cable
can be checked.
+ +
Note: Do not perform the operation other than the specified operation in
–
the following i.LINK test mode, as the set otherwise may not oper-
ate normally.
Checking Method:
[POWER]
1. Press the button to turn the power on, and rotate the
[ AMS ]
l L dial to select the "i.LINK" function (i.LINK
LED (blue) lights up). Then, with the
[OPEN/CLOSE ]
kept pressed, press the
[ ]
and N button in this order, so that the i.LINK test mode is
activated and "<< [BACK] >>" is displayed on the fluorescent
display tube.
2. With "<< [BACK] >>" displayed on the fluorescent display
[ AMS
tube, rotate the l L
display by five steps, so that "B.Rst. [000]" is displayed. This
counter increments by one or several counts each time the bus
reset occurs.
3. Turn on the power of the unit equipped with the i.LINK termi-
nal, and connect the set to the unit equipped with the i.LINK
terminal using the i.LINK cable to check if the bus reset oc-
curs correctly. If the bus reset does not occur, or if the bus
reset occurs continuously, the i.LINK cable will be discon-
nected or the connector connection will be loose.
Note: The bus reset may not occur unless the power of the unit equipped
with the i.LINK terminal is turned on when it is connected.
4. With the set connected to the unit equipped with the i.LINK
terminal using the i.LINK cable, move the i.LINK cable to
check if the bus reset occurs. If the bus reset occurs though the
i.LINK cable is not removed, the i.LINK cable will be discon-
nected or the connector connection will be loose.
[POWER]
5. Press the button to turn the power off, or rotate the
[ AMS ]
l L dial counterclockwise so as to display "<<
[BACK] >>", and then press the
i.LINK test mode is deactivated.
TP513
(TE)
TP506
IC504
(FE)
TP703
(RFAC)
IC509
TP504
(AVC)
TP517 TP516
(WFCK) (RFCK)
IC701
TP704
(AGND)
IC802
IC801
SCD-XA9000ES
Ver 1.1
[TIME/TEXT]
button
[ ]
A button, x button,
]
dial clockwise to advance the
[MENU]
button, so that the