Read Sony DCR-TRV130 / DCR-TRV130E (serv.man2) Service Manual online
5-48
3. IR Audio Deviation Adjustment (MI-041 Board)
Mode
VTR stop
Signal
Video : Color bar, VIDEO IN jack of
DVMC-DA1
Audio : 400Hz, –7.5dBs, AUDIO IN
L and R jack of DVMC-DA1
Measurement Point
AUDIO L terminal and AUDIO R
terminal of IR receiver jig
(Terminated at 47k
terminal of IR receiver jig
(Terminated at 47k
Ω
)
Measuring Instrument
Audio level meter
Adjustment Page
F
Adjustment Address
7F
Specified Value
Signal level: –7.5 ± 1.0 dBs
Level difference of L and R: Below
2dB
Level difference of L and R: Below
2dB
Connection of Equipment:
Connect the measuring device as shown in the following figure,
and adjust.
Connect the measuring device as shown in the following figure,
and adjust.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
Connect the audio level meter to
the AUDIO L terminal of the IR
receiver jig.
the AUDIO L terminal of the IR
receiver jig.
3
F
7F
Change the data and set the
400Hz audio signal level to the
specified value.
400Hz audio signal level to the
specified value.
4
F
7F
Press PAUSE button.
5
Connect the audio level meter to
the AUDIO R terminal of the IR
receiver jig.
the AUDIO R terminal of the IR
receiver jig.
6
F
7F
Check that the 400Hz audio
signal level is within the
specified value. If outside, repeat
from step 2.
signal level is within the
specified value. If outside, repeat
from step 2.
7
0
01
00
Set the data.
Main unit
Audio oscillator
Audio Left
(White)
(White)
DV
IN/OUT
IN/OUT
DV
IN/OUT
IN/OUT
R
L
VIDEO IN
VIDEO OUT
(75
(75
Ω
)
AUDIO IN
Audio Right
(Red)
(Red)
Attenuator
Media converter
DVMC-DA1
DVMC-DA1
Pattern generator
IR receiver jig
AUDIO OUT
L
R
Audio level meter
47k
Ω
600
Ω
600
Ω
: 270
Ω
(1-249-410-11) + 330
Ω
(1-249-411-11)
47k
Ω
(1-249-437-11)
Fig. 5-3-14.
