Read Sony DCR-PC1000 / DCR-PC1000E (serv.man4) Service Manual online
6-65
DCR-PC1000/PC1000E
1. Playback Level Check
Mode
VTR playback
Signal
Audio operation check tape
For audio operation check
(XH5-3 (NTSC))
(XH5-3P (PAL))
For audio operation check
(XH5-3 (NTSC))
(XH5-3P (PAL))
Measurement Point
Audio left or right terminal of AUDIO
VIDEO jack
VIDEO jack
Measuring Instrument
Audio level meter and frequency
counter
counter
Specified Value
32kHz mode : 1kHz, +3.0
± 2.0dBs
48kHz mode : 1kHz, +3.0
± 2.0dBs
44.1kHz mode :
The 7.35kHz signal level during
EMP OFF is +2.0
EMP OFF is +2.0
± 2.0dBs.
The 7.35kHz signal level during
EMP ON is -6
EMP ON is -6
± 2 dB from the
signal level during EMP OFF.
Checking Method:
1)
1)
Check that the playback signal level is the specified value.
2. Overall Level Characteristics Check
Mode
VTR recording and playback
Signal
400Hz, -7.5dBs signal: AUDIO
VIDEO jack left and right
VIDEO jack left and right
Measurement Point
Audio left or right terminal of AUDIO
VIDEO jack
VIDEO jack
Measuring Instrument
Audio level meter
Specified Value
-7.5
± 3.0dBs
Checking Method:
1)
1)
Input the 400Hz, -7.5dBs signal in the AUDIO VIDEO jack.
2)
Record in the PLAY/EDIT mode.
3)
Playback the recorded section.
4)
Check that the 400Hz signal level is the specified value.
3. Overall Distortion Check
Mode
VTR recording and playback
Signal
400Hz, -7.5dBs signal: AUDIO
VIDEO jack left and right
VIDEO jack left and right
Measurement Point
Audio left or right terminal of AUDIO
VIDEO jack
VIDEO jack
Measuring Instrument
Audio distortion meter
Specified Value
Below 0.4%
(200Hz to 6kHz BPF ON)
(200Hz to 6kHz BPF ON)
Checking Method:
1)
1)
Input the 400Hz, -7.5dBs signal in the AUDIO VIDEO jack.
2)
Record in the PLAY/EDIT mode.
3)
Playback the recorded section.
4)
Check that the distortion is the specified value.
4. Overall Noise Level Check
Mode
VTR recording and playback
Signal
No signal: Insert a shorting plug in the
AUDIO VIDEO jack
AUDIO VIDEO jack
Measurement Point
Audio left or right terminal of AUDIO
VIDEO jack
VIDEO jack
Measuring Instrument
Audio level meter
Specified Value
Below -45dBs
( IHF-A filter ON , 20kHz LPF ON )
( IHF-A filter ON , 20kHz LPF ON )
Checking Method:
1)
1)
Insert a shorting plug in the AUDIO VIDEO jack.
2)
Record in the PLAY/EDIT mode.
3)
Playback the recorded section.
4)
Check that the distortion is the specified value.
5. Overall Separation Check
Mode
VTR recording and playback
Signal
400Hz, -7.5dBs signal: AUDIO
VIDEO jack <right>[left]
(Connect the AUDIO VIDEO jack
<left>[right] to GND )
VIDEO jack <right>[left]
(Connect the AUDIO VIDEO jack
<left>[right] to GND )
Measurement Point
Audio <left>[right] terminal of
AUDIO VIDEO jack
AUDIO VIDEO jack
Measuring Instrument
Audio level meter
Specified Value
Below -40dBs
( IHF-A filter ON)
( IHF-A filter ON)
< >: Left channel check
[ ]: Left channel check
[ ]: Left channel check
Checking Method:
1)
1)
Input the 400Hz, -7.5dBs signal in the <right>[left] terminal
of the AUDIO VIDEO jack only.
of the AUDIO VIDEO jack only.
2)
Record in the PLAY/EDIT mode.
3)
Playback the recorded section.
4)
Check that the signal level of the audio <left>[right] terminal
is the specified value.
is the specified value.
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