Overall Level Characteristic And Distortion Factor Check; Overall S/N Check - Sony SLV-E580EE Service Manual

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4. Overall Level Characteristic and Distortion Factor
Check
Purpose:
Check the record level, play level, and distortion factor against the
reference input.
Mode
Signal
Measurement point
Measurement equipment
Specified value
Confirmation Method:
1) Supply an audio signal of 400 Hz, –6.3 dBs simultaneously to
both L and R channels of Audio Line Input.
2) Make recording
3) Play back a recorded portion.
4) Confirm that a playback level is –6.3 ± 3 dBs.
5) Confirm that a distortion factor is within 4%.

5. Overall S/N Check

Purpose:
Confirm that the S/N is within the specification.
Mode
Signal
Measurement point
Measurement equipment
TE
L 13942296513
Specified value
Confirmation Method:
1) Connect both L and R channels of audio line input to the GND.
2) Start recording.
3) Play the recorded part to confirm that the noise is below –45.5
dBs.
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REC and PB (SP mode)
400 Hz, –6.3 dBs
Audio output terminal
Audio level meter and
distortion factor meter
Playback level: –6.3 ± 3 dBs
Distortion factor: 4% or less
REC and PB (SP mode)
No signal
Audio output terminal
Audio level meter
–45.5 dBs or less
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