Read Sony DCR-SR30E / DCR-SR40 / DCR-SR40E (serv.man4) Service Manual online
6-37
DCR-SR30E/SR40/SR40E_ADJ
1-9.
AUDIO SYSTEM ADJUSTMENTS
Switch setting
REC MODE (Menu setting) ............................................... LP
[Connecting the measuring instruments for the audio]
Connect the audio system measuring instruments in addition to
the video system measuring instruments as shown in Fig. 6-1-15.
the video system measuring instruments as shown in Fig. 6-1-15.
Fig. 6-1-15
Audio
oscillator
Attenuator
600
Ω
600
Ω
(270
Ω
(1-249-410-11) +330
Ω
(1-249-411-11))
Main unit
Main unit
47 k
Ω
47 k
Ω
: 1-249-437-11
Audio level meter or
distortion meter
TV monitor
A/V OUT
jack
A/V OUT
jack
L
R
Video
Audio (L)
Audio (R)
In Recording (MOVIE mode)
In Playback (PLAY/EDIT mode)
1. Overall Level Characteristics Check
Mode
Recording (MOVIE mode) and
playback (PLAY/EDIT mode)
playback (PLAY/EDIT mode)
Signal
400 Hz,
−
7.5 dBs signal:
Audio left and right terminal of A/V
OUT jack
OUT jack
Measurement Point
Audio left or right terminal of A/V
OUT jack
OUT jack
Measuring Instrument
Audio level meter
Specified Value
–7.5
±
1.0 dBs
Checking Method:
1) Select page: 3, address: E2, set data: 08, and press the PAUSE
1) Select page: 3, address: E2, set data: 08, and press the PAUSE
button.
2) Input the 400 Hz, –7.5 dBs signal in the audio left and right
terminal of A/V OUT jack.
3) Record the signal.
4) Remove the input signal.
5) Playback the recorded section.
6) Check that the 400 Hz signal level is the specified value.
7) Select page: 3, address: E2, set data: 00, and press the PAUSE
4) Remove the input signal.
5) Playback the recorded section.
6) Check that the 400 Hz signal level is the specified value.
7) Select page: 3, address: E2, set data: 00, and press the PAUSE
button.
2. Overall Distortion Check
Mode
Recording (MOVIE mode) and
playback (PLAY/EDIT mode)
playback (PLAY/EDIT mode)
Signal
400 Hz, –7.5 dBs signal:
Audio left and right terminal of A/V
OUT jack
Audio left and right terminal of A/V
OUT jack
Measurement Point
Audio left or right terminal of A/V
OUT jack
OUT jack
Measuring Instrument
Audio distortion meter
Specified Value
Below 0.4%
(200 Hz to 6 kHz BPF ON)
(200 Hz to 6 kHz BPF ON)
Checking Method:
1) Select page: 3, address: E2, set data: 08, and press the PAUSE
1) Select page: 3, address: E2, set data: 08, and press the PAUSE
button.
2) Input the 400 Hz, –7.5 dBs signal in the audio left and right
terminal of A/V OUT jack.
3) Record the signal.
4) Remove the input signal.
5) Playback the recorded section.
6) Check that the distortion is the specified value.
7) Select page: 3, address: E2, set data: 00, and press the PAUSE
4) Remove the input signal.
5) Playback the recorded section.
6) Check that the distortion is the specified value.
7) Select page: 3, address: E2, set data: 00, and press the PAUSE
button.
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