Sony DCR-TRV7 / DCR-TRV7E Service Manual ▷ View online
5–53
Fig. 5-3-14.
Adjusting method:
1) Set data: 01 to page: 0, address: 01.
2) Change the data of page: D, address: 91, and set the video signal
1) Set data: 01 to page: 0, address: 01.
2) Change the data of page: D, address: 91, and set the video signal
amplitude (A) to the specified value.
3) Press the PAUSE button of the adjusting remote commander.
4) Set data: 00 to page: 0, address: 01.
4) Set data: 00 to page: 0, address: 01.
Connection of Equipment
Connect the measuring devices as shown in the following figure,
and adjust.
Connect the measuring devices as shown in the following figure,
and adjust.
Frequency counter
Fig. 5-3-13.
Adjusting method:
1) Set data: 01 to page: 0, address: 01.
2) Set data: 10 to page: 2, address: 12, and press the PAUSE button
1) Set data: 01 to page: 0, address: 01.
2) Set data: 10 to page: 2, address: 12, and press the PAUSE button
of the adjusting remote commander.
3) Change the data of page: D, address: 90, and set the video carrier
frequency (f) to the specified value.
4) Press the PAUSE button of the adjusting remote commander.
5) Set data: 00 to page: 2, address: 12, and press the PAUSE button
5) Set data: 00 to page: 2, address: 12, and press the PAUSE button
of the adjusting remote commander.
6) Set data: 00 to page: 0, address: 01.
3-5. IR TRANSMITTER ADJUSTMENTS
Adjust using a IR receiver jig (J-6082-383-A).
Switch setting:
LASER LINK ................................................. ON (Red LED is lit)
LASER LINK ................................................. ON (Red LED is lit)
1.
IR Video Carrier Frequency Adjustment
(CB-58 board)
(CB-58 board)
2.
IR Video Deviation Adjustment (CB-58 Board)
75
Ω
VIDEO
OUT
OUT
75
Ω
(1-247-804-11)
Main unit
Oscilloscope
IR receiver jig
For NTSC model
A
H
White (100%)
For PAL model
H
White (100%)
A
Mode
Subject
Measuring point
Measuring instrument
Adjusting page
Adjusting address
Specified value
VTR stop
Arbitrary
TP607 of IR receiver jig (RF)
(Or Pin
!§ of IC8401)
Frequency counter
D
90
f = 11.85 ± 0.05 MHz
Connection of Equipment
Connect the measuring devices as shown in the following figure,
and adjust.
Connect the measuring devices as shown in the following figure,
and adjust.
TP607
Main unit
IR receiver jig
VTR playback
Audio operation check tape,
color bar portion
VIDEO OUT terminal of IR receiver
jig (Terminated at 75 )
Oscilloscope
D
91
A = 1.00 ± 0.05V
Mode
Signal
Measuring point
Measuring instrument
Adjusting page
Adjusting address
Specified value
Fig. 5-3-15.
5–54
3.
IR Audio Deviation Adjustment (CB-58 Board)
Connection of Equipment
Connect the measuring devices as shown in the following figure,
and adjust.
Connect the measuring devices as shown in the following figure,
and adjust.
VTR playback
Audi operation check tape
44.1 kHz EMP ON portion
(7.35 kHz audio signal portion)
AUDIO OUT L terminal and AUDIO
OUT R terminal of IR receiver jig
(Terminated at 47 k )
Audio level meter
D
92
Signal level: –4.0 ± 1.0 dBs
Level difference of L and R:
Below 2 dB
Mode
Signal
Measuring point
Measuring instrument
Adjusting page
Adjusting address
Specified value
Fig. 5-3-16.
Adjusting method:
1) Set data: 01 to page: 0, address: 01.
2) Connect the audio level meter to the AUDIO OUT L terminal of
1) Set data: 01 to page: 0, address: 01.
2) Connect the audio level meter to the AUDIO OUT L terminal of
the IR receiver jig.
3) Change the data of page: D, address: 92, and set the audio signal
level of 44.1 kHz EMP ON portion to the specified value.
4) Press the PAUSE button of the adjusting remote commander.
5) Connect the audio level meter to the AUDIO OUT R terminal of
5) Connect the audio level meter to the AUDIO OUT R terminal of
the IR receiver jig.
6) Check that the audio level of 44.1 kHz EMP ON portion is within
the specified value. If outside, repeat from step 2.
7) Set data: 00 to page: 0, address: 01.
Main unit
IR receiver jig
AUDIO OUT
L R
L R
Audio level meter
47k
47k (1-249-437-11)
5–55
3-6. AUDIO SYSTEM ADJUSTMENTS
[Connection of Audio System Measuring Devices]
Connect the audio system measuring devices as shown in Fig. 5-3-17.
Fig. 5-3-17.
Recording (Camera mode)
Unit
Audio
oscillator
oscillator
Attenuator
600
Ω
Left
Right
MIC
600
Ω
: 270
Ω
(1-249-410-11) + 330
Ω
(1-249-411-11)
TV Monitor
Audio Level Meter or
Distortion Meter
Distortion Meter
Video
(YELLOW)
(YELLOW)
47 k
Ω
47 k
Ω
47 k
Ω
: 1-249-437-11
Left (White)
Right
(Red)
Playback (VTR mode)
Unit
AUDIO/
VIDEO
OUT
5–56
Camera recording and playback
No signal: Insert a shorting plug in the
MIC jack
Audio left or right terminal of AUDIO
VIDEO OUT jack
Audio level meter
Below –45 dBs
(IHF-A filter ON, 20kHz LPF ON)
Mode
Signal
Measurement Point
Measuring Instrument
Specified Value
Camera recording and playback
1kHz, –66dBs signal: MIC jack left
(Connect the MIC jack right to GND)
Audio right terminal of AUDIO VIDEO
OUT jack
Audio level meter
Below –45 dBs
(IHF-A filter ON, 20kHz LPF ON)
Mode
Signal
Measurement Point
Measuring Instrument
Specified Value
4. Overall Noise Level Check
Checking method:
1) Input the 400Hz, –66 dBs signal in the MIC jack.
2) Record in the camera mode.
3) Playback the recorded section.
4) Check that the noise level is the specified value.
1) Input the 400Hz, –66 dBs signal in the MIC jack.
2) Record in the camera mode.
3) Playback the recorded section.
4) Check that the noise level is the specified value.
5. Overall Separation Check
Checking method:
1) Input the 400Hz, –66 dBs signal in the left terminal of the MIC
1) Input the 400Hz, –66 dBs signal in the left terminal of the MIC
jack only.
2) Record in the camera mode.
3) Playback the recorded section.
4) Check that the signal level of the audio right terminal is the
3) Playback the recorded section.
4) Check that the signal level of the audio right terminal is the
specified value.
Checking method:
1) Check that the playback signal level is the specified value.
1) Check that the playback signal level is the specified value.
2. Overall Level Characteristics Check
VTR playback
Audio operation check tape
Audio left or right terminal of AUDIO
VIDEO OUT jack
Audio level meter and frequency counter
32kHz mode : 1kHz, 3.0 ± 2 dBs
48kHz mode : 1kHz, 3.0 ± 2 dBs
44.1kHz mode :
The 7.35kHz signal level during EMP ON
is –6 ± 2 dB against the signal level during
EMP OFF
Mode
Signal
Measurement Point
Measuring Instrument
Specified Value
Checking method:
1) Input the 400Hz, –66 dBs signal in the MIC jack.
2) Record in the camera mode.
3) Playback the recorded section.
4) Check that the 400Hz, signal level is the specified value.
1) Input the 400Hz, –66 dBs signal in the MIC jack.
2) Record in the camera mode.
3) Playback the recorded section.
4) Check that the 400Hz, signal level is the specified value.
3. Overall Distortion Check
Camera recording and playback
400Hz, –66 dBs signal: MIC jack left and
right
Audio left or right terminal of AUDIO
VIDEO OUT jack
Audio level meter
–7.5 ± 3 dBs
Checking method:
1) Input the 400Hz, –66 dBs signal in the MIC jack.
2) Record in the camera mode.
3) Playback the recorded section.
4) Check that the distortion is the specified value.
1) Input the 400Hz, –66 dBs signal in the MIC jack.
2) Record in the camera mode.
3) Playback the recorded section.
4) Check that the distortion is the specified value.
Mode
Signal
Measurement Point
Measuring Instrument
Specified Value
Camera recording and playback
400Hz, –66 dBs signal: MIC jack left and
right
Audio left or right terminal of AUDIO
VIDEO OUT jack
Audio distortion meter
Below 0.4% (200Hz to 6kHz BPF ON)
Mode
Signal
Measurement Point
Measuring Instrument
Specified Value
1. Playback Level Check
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