Sony RCD-W500C Service Manual page 34

RCD-W500C
4) Check that the message "CDRW VWDC-CHECK completed!"
appears. (Fig. 3-13)
NG Judgment Result Indication
When the present VWDC value of the laser unit KRM-220CAA
(Op) does not satisfy the required specification, the message
"VWDC (Line End - Now) [NG]" appears.
Measure: Check the peripheral of CN101.
Replace KRM-220CAA.
3-3. Use of Self Diagnosis Function-1 (In the case when result data of the past electrical adjustment, is not needed.)
Perform the self diagnosis as described below in the case when electrical adjustment is not performed yet, or when result data of the
electrical adjustment in the past, is not needed and ready to be erased.)
1) Connect the CDM65-RBD2 (abbreviated as CDM65 hereafter) that is going to be repaired, the jig and a PC following the Connection
Diagram as shown in section 1-1.
2) Turn on the power of the RCD-W500C in which the CDM65 is installed.
3) Start up the TeraTermPro that is installed in PC. Set the switch S510 on the jig to "CONTROL".
4) Press the "RESET" button (SW101) of the jig. (Fig. 3-14)
5) Type portchk [Enter] from keyboard of PC. (Fig. 3-15)
Note 5-1 : When the KRM-220CAA is connected, the spindle
motor rotates at a high speed. If the message "H8/
3064 Port Check END!" appears, press the "RESET"
button and stop the spindle.
Note 5-2 : When the CDM65 (loading mechanism) is installed,
ignore the message "PA (#93-100): NG".
Confirm that "OK" is displayed in all items except for the cases
as described above.
If "NG" is displayed in any item, it is assumed that the pin
number of IC501 as shown in Fig. 3-15 is defective or its
peripheral has abnormality. Perform the repair work again and
repeat the self diagnosis. Repeat the repair work and self
diagnosis until OK is displayed.
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4 Fig. 3-13
4 Fig. 3-14
4 Fig. 3-15