Sony GV-D1000 (serv.man2) Service Manual ▷ View online
5-23
GV-D1000/D1000E
5. VIDEO OUT Y, Chroma Level Check (VC-275 board)
Mode
VTR stop
Signal
No signal
Measurement Point
VIDEO OUT jack (75
Ω terminated)
Measuring Instrument
Oscilloscope
Specified Value
Sync level: A = 286 ± 18mV(NTSC)
A = 300 ± 18mV(PAL)
Burst level: B = 286 ± 18mV(NTSC)
B = 300 ± 18mV(PAL)
Switch setting:
DEMO MODE (Menu setting) ........................................ OFF
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
8
10
06
Set the data, and press PAUSE
button.
button.
3
D
11
10
Set the data, and press PAUSE
button.
button.
4
3
0C
02
Set the data, and press PAUSE
button.
button.
5
Check that the sync signal level
(A) satisfies the specified value.
(A) satisfies the specified value.
6
Check that the burst signal level
(B) satisfies the specified value.
(B) satisfies the specified value.
7
3
0C
00
Set the data, and press PAUSE
button.
button.
8
8
10
00
Set the data, and press PAUSE
button.
button.
9
D
11
00
Set the data, and press PAUSE
button.
button.
10
0
01
00
Set the data.
Fig. 5-3-10.
H
B
A
5-24
GV-D1000/D1000E
3-6.
AUDIO SYSTEM ADJUSTMENTS
[Connecting the measuring instruments for the audio]
Connect the audio system measuring instruments in addition to the
video system measuring instruments as shown in Fig. 5-3-11.
Connect the audio system measuring instruments in addition to the
video system measuring instruments as shown in Fig. 5-3-11.
[Adjustment Procedure]
1)
1)
Playback level check
2)
Overall level characteristics check
3)
Overall distortion check
4)
Overall noise level check
5)
Overall separation check
1. Playback Level Check
Mode
Playback
Signal
Alignment tape:
For audio operation check
(XH5-3 (NTSC))
(XH5-3P (PAL))
For audio operation check
(XH5-3 (NTSC))
(XH5-3P (PAL))
Measurement Point
AUDIO OUT jack LEFT or RIGHT
Measuring Instrument
Audio level meter and frequency
counter
counter
Specified Value
32 kHz mode: 1 kHz, +3.0 ± 2.0dBs
48 kHz mode: 1 kHz, +3.0 ± 2.0dBs
44.1 kHz mode:
The 7.35kHz signal level during EMP
OFF is +2.0 ± 2.0dBs.
The 7.35kHz signal level during EMP
ON is –6 ± 2 dB from the signal level
during EMP OFF.
48 kHz mode: 1 kHz, +3.0 ± 2.0dBs
44.1 kHz mode:
The 7.35kHz signal level during EMP
OFF is +2.0 ± 2.0dBs.
The 7.35kHz signal level during 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
Recording and playback
Signal
400Hz, –7.5dBs signal: Audio
terminal left and right of AUDIO/
VIDEO INPUT jack
terminal left and right of AUDIO/
VIDEO INPUT jack
Measurement Point
AUDIO OUT jack LEFT or RIGHT
Measuring Instrument
Audio level meter
Specified Value
–7.5 ± 3.0dBs
Checking Method:
1)
1)
Input the 400Hz, –7.5dBs signal in the audio terminal left and
right of AUDIO/VIDEO INPUT jack.
right of AUDIO/VIDEO INPUT jack.
2)
Record the signal.
3)
Playback the recorded section.
4)
Check that the 400Hz signal level is the specified value.
3. Overall Distortion Check
Mode
Recording and playback
Signal
400Hz, –7.5dBs signal: Audio
terminal left and right of AUDIO/
VIDEO INPUT jack
terminal left and right of AUDIO/
VIDEO INPUT jack
Measurement Point
AUDIO OUT jack LEFT or RIGHT
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 terminal left and
right of AUDIO/VIDEO INPUT jack.
right of AUDIO/VIDEO INPUT jack.
2)
Record the signal.
3)
Playback the recorded section.
4)
Check that the distortion is the specified value.
Fig. 5-3-11.
VIDEO OUT
(75
Ω)
Pattern generator
AUDIO/VIDEO
INPUT
Main Unit
Audio generator
Attenuator
600
Ω
600
Ω: 270 Ω (1-249-410-11) + 330 Ω (1-249-411-11)
AUDIO
LEFT
(White)
LEFT
(White)
AUDIO
RIGHT
(RED)
RIGHT
(RED)
VIDEO
(Yellow)
(Yellow)
Recording
L
R
AUDIO OUT
VIDEO OUT
Main unit
Monitor TV
47k
Ω
47k
Ω
47k
Ω(1-249-437-11)
Audio level meter
or distortion meter
Playback
5-25
GV-D1000/D1000E
4. Overall Noise Level Check
Mode
Recording and playback
Signal
No signal: Audio terminal left and
right of AUDIO/VIDEO INPUT jack
right of AUDIO/VIDEO INPUT jack
Measurement Point
AUDIO OUT jack LEFT or RIGHT
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)
Connect the audio terminal left of AUDIO/VIDEO INPUT jack
and its ground terminal with a jumper wire.
and its ground terminal with a jumper wire.
2)
Connect the audio terminal right of AUDIO/VIDEO INPUT
jack and its ground terminal with a jumper wire.
jack and its ground terminal with a jumper wire.
3)
Record the signal.
4)
Playback the recorded section.
5)
Check that the noise level is the specified value.
6)
Remove the jumper wires.
5. Overall Separation Check
Mode
Recording and playback
Signal
No signal: Audio terminal <left> [right]
of AUDIO/VIDEO INPUT jack
400Hz, –7.5dBs signal: Audio terminal
<right> [left] of AUDIO/VIDEO
INPUT jack
of AUDIO/VIDEO INPUT jack
400Hz, –7.5dBs signal: Audio terminal
<right> [left] of AUDIO/VIDEO
INPUT jack
Measurement Point
AUDIO OUT jack <LEFT> [RIGHT]
Measuring Instrument
Audio level meter
Specified Value
Below –40dBs
< >: Left channel check
[ ]: Right channel check
[ ]: Right channel check
Checking Method:
1)
1)
Connect the audio terminal <left> [right] of AUDIO/VIDEO
INPUT jack and its ground terminal with a jumper wire.
INPUT jack and its ground terminal with a jumper wire.
2)
Input the 400Hz, –7.5dBs signal in the audio terminal <right>
[left] of AUDIO/VIDEO INPUT jack.
[left] of AUDIO/VIDEO INPUT jack.
3)
Record the signal.
4)
Playback the recorded section.
5)
Check that the signal level of the AUDIO OUT <LEFT>
[RIGHT] jack is the specified value.
[RIGHT] jack is the specified value.
6)
Remove the jumper wires.
5-26
GV-D1000/D1000E
3-7.
LCD SYSTEM ADJUSTMENT
Note 1:
The back light (fluorescent tube) is driven by a high voltage AC
power supply. Therefore, do not touch the back light holder to
avoid electrical shock.
power supply. Therefore, do not touch the back light holder to
avoid electrical shock.
Note 2:
When replacing the LCD unit, be careful to prevent damages
caused by static electricity.
caused by static electricity.
Note 3:
Set the LCD BRIGHT to the center.
Set the LCD COLOR (Menu display) to the center.
Set the LCD COLOR (Menu display) to the center.
[Adjusting connector]
Most of the measuring points for adjusting the LCD system are
concentrated in CN5502 of the PD-130 board. Connect the
measuring instruments via the multi CPC jig (J-6082-311-A). The
following table shows the Pin No. and signal name of CN5502.
Most of the measuring points for adjusting the LCD system are
concentrated in CN5502 of the PD-130 board. Connect the
measuring instruments via the multi CPC jig (J-6082-311-A). The
following table shows the Pin No. and signal name of CN5502.
1. LCD Initial Data Input (1)
Mode
VTR stop
Signal
No signal
Adjustment Page
C
Adjustment Address
AB to BA
Pin No.
1
3
5
7
9
Signal Name
VB
VG
VR
C SYNC/HD
GND
Pin No.
2
4
6
8
10
Signal Name
XVD OUT
PANEL COM
SH/CA
XHD OUT
GND
Table. 5-3-12.
Address
AB
AC
AD
AE
AF
B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
BA
Data
53/58
00
90
CB
6C
2C
00
00
20
0A
24
1A
0F
17
21
23
Remark
Fixed data (Note 2)
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fig. 5-3-12.
PD-130 board
CN5502
1
9
2 10
Adjusting method:
1)
1)
Select page: 0, address: 01, and set data: 01.
2)
Select page: C, and input the data in the following table.
Note 1:
To write in the non-volatile memory (EEPROM), press the
PAUSE button of the adjustment remote commander each
time to set the data.
PAUSE button of the adjustment remote commander each
time to set the data.
3)
Select page: 0, address: 01, and set data: 00.
Note 2:
NTSC/PAL
NTSC: GV-D1000, PAL: GV-D1000E
NTSC: GV-D1000, PAL: GV-D1000E
Table. 5-3-13.
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