Sony SCD-XB790 Service Manual page 19

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3 7 6 3 1 5 1 5 0
CLV Jitter Check (CD only)
Connection:
oscilloscope
MAIN board
(CH1)
TP516 (RFCK) + +
–
TP517(WFCK)
(CH2)
TP808 (DG)
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 (DG) (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
T E
L 1 3 9 4 2 2 9 6 5 1 3
A
Checking and Connecting Location:
– MAIN Board (Component Side) –
TP704
TP506 TP504
IC703
(AGND) TP703
(FE) (AVC)
(RFAC)
TP514
TP808 (DG)
(RFCK)
TP513 IC509
(TE)
TP517 IC701
IC801
(WFCK)
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