Sony GV-D300 Operating Instructions (primary manual), Service Manual

Page: 81 / 148

5-17
3-5-3. Base Band Block Adjustments
Note:
In some adjustments, the color bar signal generated by DCR-
VX1000(NTSC) or DCR-VX1000E(PAL) is used for the video input
signal.
[How to generate the color bar signal]
1) Connect the adjustment remote commander to DCR-
VX1000(NTSC) or DCR-VX1000E(PAL).
2) Set the power switch to CAMERA.
3) Select page: 5, address: 02, and set data: 09.
By carrying out the above procedure, DCR-VX1000(NTSC)
or DCR-VX1000E(PAL) generates the color bar signal. After
completing adjustments, set data: 00 to the address.
1. NPS PLL Adjustment (CB-61 Board)
Set the NPS PLL free-run frequency.
Mode VTR stop
Signal Color bar signal generated by DCR-
VX1000(NTSC) or DCR-
VX1000E(PAL) (DV jack input)
Measurement Point Pin
!¶
of CN9932 (NPS PLL)
Measuring Instrument Frequency counter
Adjustment Element CT1200
Specified Value f = 14318180 ± 100Hz (NTSC)
f = 17734480 ± 100Hz (PAL)
Adjusting method:
1)
Set the frequency (f) to the specified value using CT1200.
2. NPS Y Level Adjustment (CB-61 Board)
Set the IC1103 PB Y input signal level.
Mode VTR stop
Signal Color bar signal generated by DCR-
VX1000(NTSC) or DCR-
VX1000E(PAL) (DV jack input)
Measurement Point Pin
!•
of CN9932 (NPS Y)
Measuring Instrument Oscilloscope
Adjustment Page D
Adjustment Address 59
Specified Value A = 125 ± 3mV (NTSC)
A = 140 ± 3mV (PAL)
Connection: Connect Pin
!•
of CN9932 and Pin
!ª
(GND) of
CN9932 with a 470
Ω
resistor (Parts code: 1-249-413-11)
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 59, change the data and set the sync
signal level (A) to the specified value.
3) Press the PAUSE button of the adjustment remote commander.
4) Select page: 0, address: 01, and set data: 00.
5) Perform “Video Output Y Level Adjustment”.
Fig. 5-3-8
H
A