SONY SCDXE680
Manual de Servicio

SCD-XE680

Traverse Check Connection:
oscilloscope MAIN board TP513 (TE) TP504 (AVC) + �

RF Level Check Connection:
oscilloscope MAIN board TP703 (RFAC) TP704 (AGND) + �

CLV Jitter Check (CD only) Connection:
oscilloscope MAIN board TP516 (RFCK) TP517(WFCK) TP808 (DG) (CH1) (CH2) + � +

Checking Method: 1. Under the condition of S curve waveform check mode in step 5, press the [ l AMS 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 oscilloscope satisfy the specification. Specified Value:
Disc SATD-S5 or SATD-S4 PATD-012 or YEDS-18 0.9 to 1.4 Vp-p �0.1 to +0.1V A B

Checking Method: 1. Under the condition of traverse waveform check mode in step 4, press the [ l AMS 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. 5. Press the [ l AMS 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. 7. Press the [ l AMS 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. 9. After checking, press the [l AMS L] dial, and the test is over when �BU MEASURE� is displayed. [OPEN/CLOSE A ] button to open the tray, and re10. Press the move the test disc. 11. Using each type of disc, repeat from step 1 of S curve waveform check up to step 10 of RF level check. 12. When the check is over, press the [POWER] button to turn the power off.
Note: Take care not to leave the test disc in the set.

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 PATD-012 or YEDS-18 A 35 µsec or less

CLV jitter waveform

Traverse waveform Center fo the waveform

A VC B

A

Checking and Connecting Location : See page 17.

Checking and Connecting Location: � MAIN Board (Component Side) �
TP506 (FE) TP704 TP504 (AGND) TP703 (AVC) TP514 (RFAC) (RFCK) IC509 TP517 (WFCK) IC701 IC703 TP808 (DG)

Specified Value:
Disc SATD-S5 or SATD-S4 PATD-012 or YEDS-18
RF signal waveform VOLT/DIV: 200 mV TIME/DIV: 500 ns

A TP513 (TE) 0.9 to 1.4 Vp-p

IC801

A

Note: Clear RF waveform refers to the waveform where � shapes should be distinctively observed in the center.

Checking and Connecting Location : See page 19.

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