Read Sony DCR-HC1000 / DCR-HC1000E (serv.man4) Service Manual online
6-57
DCR-HC1000/HC1000E
6. External MIC Function Check
6-1. Front MIC Function Check
6-1. Front MIC Function Check
Mode
Camera standby (CAMERA-TAPE)
Signal
Left terminal of FRONT MIC jack:
400Hz, -66dBs signal
Right terminal of FRONT MIC jack:
400Hz, -66dBs signal
Left terminal of REAR MIC jack:
No signal
Right terminal of REAR MIC jack:
No signal
Measurement Point
Audio left and right terminal of
AUDIO/VIDEO jack
AUDIO/VIDEO jack
Measuring Instrument
Audio level meter
Specified Value
-7.5 ± 3.0dBs
Checking Method:
1)
1)
Input the 400Hz, -66dBs signal in the left and right terminal of
FRONT MIC jack
FRONT MIC jack
2)
Connect the left terminal of REAR MIC jack to GND using a
jumper wire.
Connect the right terminal of REAR MIC jack to GND using a
jumper wire.
jumper wire.
Connect the right terminal of REAR MIC jack to GND using a
jumper wire.
3)
Choose 4CH AUD CHEK of the STANDARD SET menu and
set it to “FRONT”.
set it to “FRONT”.
4)
Choose MIC LEVEL of the STANDARD SET menu and set it
to “MANUAL”.
to “MANUAL”.
5)
Push the +/- button of MIC LEVEL screen and check that the
audio signal level is changed.
audio signal level is changed.
6)
Set MIC LEVEL to “AUTO”.
7)
Check that the 400Hz signal level is the specified value.
8)
Choose 4CH AUD CHEK of the STANDARD SET menu and
set it to “REAR”.
set it to “REAR”.
9)
Check that the 400Hz signal is lost.
10) Choose 4CH AUD CHEK of the STANDARD SET menu and
set it to “FRONT”.
6-2. Rear MIC Function Check
Mode
Camera standby (CAMERA-TAPE)
Signal
Left terminal of FRONT MIC jack:
No signal
Right terminal of FRONT MIC jack:
No signal
Left terminal of REAR MIC jack:
400Hz, -66dBs signal
Right terminal of REAR MIC jack:
400Hz, -66dBs signal
Measurement Point
Audio left and right terminal of
AUDIO/VIDEO jack
AUDIO/VIDEO jack
Measuring Instrument
Audio level meter
Specified Value
-7.5 ± 3.0dBs
Checking Method:
1)
1)
Input the 400Hz, -66dBs signal in the left and right terminal of
REAR MIC jack
REAR MIC jack
2)
Connect the left terminal of FRONT MIC jack to GND using a
jumper wire.
Connect the right terminal of FRONT MIC jack to GND using
a jumper wire.
jumper wire.
Connect the right terminal of FRONT MIC jack to GND using
a jumper wire.
3)
Choose 4CH AUD CHEK of the STANDARD SET menu and
set it to “REAR”.
set it to “REAR”.
4)
Choose MIC LEVEL of the STANDARD SET menu and set it
to “MANUAL”.
to “MANUAL”.
5)
Push the +/- button of MIC LEVEL screen and check that the
audio signal level is changed.
audio signal level is changed.
6)
Set MIC LEVEL to “AUTO”.
7)
Check that the 400Hz signal level is the specified value.
8)
Choose 4CH AUD CHEK of the STANDARD SET menu and
set it to “FRONT”.
set it to “FRONT”.
9)
Check that the 400Hz signal is lost.
6-3. Monaural MIC Function Check
Mode
Camera standby (CAMERA-TAPE)
Signal
Left terminal of FRONT MIC jack:
400Hz, -66dBs signal
Right terminal of FRONT MIC jack:
No signal
Measurement Point
Audio left and right terminal of
AUDIO/VIDEO jack
AUDIO/VIDEO jack
Measuring Instrument
Audio level meter
Specified Value
-7.5 ± 3.0dBs
Note:
Do not insert any plug to REAR MIC jack.
Checking Method:
1)
1)
Input the 400Hz, -66dBs signal in the left terminal of FRONT
MIC jack
MIC jack
2)
Connect the right terminal of FRONT MIC jack to GND using
a jumper wire.
a jumper wire.
3)
Choose MIC LEVEL of the STANDARD SET menu and set it
to “AUTO”.
to “AUTO”.
4)
Check that the 400Hz signal level is the specified value.
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