Sony DCR-TRV103 Service Manual page 156

3. IR Audio Deviation Adjustment (VC-213 board)
Mode VTR stop
Signal Audio signal :
Video signal :
Measurement Point AUDIO L terminal and AUDIO R
terminal of IR receiver jig
(Terminated at 47kΩ)
Measuring Instrument Audio level meter
Adjustment Page F
Adjustment Address 67
Specified Value Signal level: –7.5 ± 1.0 dBs
Level difference of L and R: Below 2dB
Note: TR model: DCR-TR7000/TR7000E/TR7100E
Connection of Equipment
Connect the measuring device as shown in the following figure,
and adjust.
Pattern generator
VIDEO OUT
Ω
(75 )
Audio oscillator
Attenuator
400Hz, –7.5dBs : L and R of
AUDIO terminal
Color bar signal : VIDEO terminal
Ω
600
Ω Ω
600 (270 (1-249-410-11) + 330
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Only for the TR model (Note), Select page: D, address: 1B, set
data: 01, and press the PAUSE button of the adjustment remote
commander.
3) Connect the audio level meter to the AUDIO L terminal of the
IR receiver jig.
4) Select page: F, address: 67, change the data and set the 400Hz
audio signal level to the specified value.
5) Press the PAUSE button.
6) Connect the audio level meter to the AUDIO R terminal of the
IR receiver jig.
7) Check that the 400Hz audio signal level is within the specified
value. If outside, repeat from step 3).
8) Only for the TR model (Note), Select page: D, address: 1B, set
data: 00, and press the PAUSE button.
9) Select page: 0, address: 01, and set data: 00.
Main unit
Video
L
Audio
R
Ω
(1-249-411-11))
Fig. 5-3-21.
5-67
IR receiver jig
AUDIO OUT
L
R
Audio level meter
Ω
47k
Ω
47k (1-249-437-11)