Fig - Sony RCD-W50C Service Manual

RCD-W50C
6) As prompted by the message shown in Fig. 4-48, check that
the waveform as shown in Fig. 4-47 appears on an oscilloscope.
RF signal waveform

4 Fig. 4-47

7) As prompted by the message shown on display, check that the waveform as shown in Fig. 4-49 appears on an oscilloscope.
RF signal waveform
4 Fig. 4-49
8) Check that the message "CDRW REC-CHECK completed!"
appears. (Fig. 4-50)
NG Judgment Result Indication
4-5-1. CD-RW Playback Measurement NG!
Contents : This message appears when the BLER (Block Error Rate) *Beta/m11 of the track that is recorded and played back, is outside
the specification.
Measure : Check if there is any abnormality in RBD1.
Replace KRM-220CAA.
48
VOLT/DIV : suitable value
TIME/DIV : 500ns
VOLT/DIV : suitable value
TIME/DIV : 500ns
4 Fig. 4-48
4 Fig. 4-50