Sony RCD-W2000ES Sevice Manual page 45

4) Press the H button of Deck A. After playback starts, press
"OK". (Fig. 4-37)
5) When the message as shown in Fig. 4-38 appears some seconds
later, stop playback (1X) and select 4x of the test mode (refer
to page 21, Play Speed Selection Mode (Deck A)) Playback
Speed. Then press the H button of Deck A. After playback
starts, press "OK".
6) As prompted by the message shown in Fig. 4-40, check that
the waveform as shown in Fig. 4-39 appears on an oscilloscope.
RF signal waveform
4 Fig. 4-39
7) As prompted by the message shown in Fig. 4-42, check that
the waveform as shown in Fig. 4-41 appears on an oscilloscope.
RF signal waveform
4 Fig. 4-41
Check that the message "CDR REC-CHECK completed!" appears. (The tray opens.)
8)
Stop playback (4X) and exit from the test mode (Deck A). (refer to page 19.)
NG Judgment Result Indication
4-4-1. CD-R 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 RBD2.
Replace KRM-220CAA.
VOLT/DIV : suitable value
TIME/DIV : 500ns
VOLT/DIV : suitable value
TIME/DIV : 500ns
4 Fig. 4-37
4 Fig. 4-38
4 Fig. 4-40
4 Fig. 4-42
RCD-W2000ES
45