9-1
HDW-750/750CE V1
Section 9
Electrical Alignment of Camera System
9-1. General Information on Electrical
Alignment
This section describes all of the electrical adjustment
procedures that are required upon completion of repair and
circuit board replacement.
9-1-1. Notes on Electrical Alignment
Allow the unit to warm-up for about 10 minutes before
starting adjustment by turning on the main power and by
setting the VTR to the “SAVE” position.
When you want to extend a circuit board, first turn off the
main power of the unit.
Bar Indication in the Top Right of the Setup Menu Display
A bar appears in the top right of the setup menu display on
VF in some adjustment procedures that use the setup
menu. This bar indicates the adjustable range and the set
value of the currently-selected menu item.
9-1-2. Required Equipment, Fixtures and Tools
.
Oscilloscope
Sony Tektronix 2465 or equivalent
.
HD analog waveform monitor
Sony Tektronix 1735HD or equivalent
.
HD digital waveform monitor
Sony Tektronix WFM1125 or equivalent
.
Frequency counter
Advantest TR5821AK or equivalent
.
Digital voltmeter
Advantest TR6845 or equivalent
.
B/W monitor (with horizontal resolution of 900 lines or
more, supporting HD SDI)
Sony BVM-D20F1J or equivalent
.
HD D/A Converter Board
Sony HKPF-102
.
HD Digital Video Interface Unit
Sony PFM-HD300/HD50A
.
Pattern box (PTB-500 90-240 Vac)
J-6029-140-B
.
Gray-scale chart (16 : 9)
Transparent-type : J-6394-080-A
.
DR extension assembly
A-8327-707-A
.
Blank tape (Recordable tape on which all of the previous
recordings are erased)
.
HD color monitor
HDM-20E1U/14E1U/14E5U
9-1-3. Initial Position of Switches during
Adjustment
Some adjustments require the unit to be put into the service
mode of the setup menu. Enter the service mode when
required as follows. For the details of the setup menu, refer
to Section 4, “Setup Menu”.
1.
Turn off the main power.
2.
Set the switch S1-1/AT-143 board to the ON position.
3.
Turn on the main power.
4.
Set the MENU ON/OFF switch on the inside panel to
the ON position.
n
When any adjustment is performed using the service mode,
the value of the adjusted item in the User Mode returns to 0.
Initial Position of Switches
The following switches need to be returned their initial
positions as shown below before starting the electrical
adjustments. In the same manner, when the various GAIN
switches are set in any position other than the default
position when shipped from the factory, return these
switches to their default positions referring to the Opera-
tion Manual before starting the electrical adjustments.
Inside pane :
VTR SAVE/STBY switch
→
STBY
GAIN switch
→
L (0 dB)
OUTPUT/DCC switch
→
CAM/OFF
MENU ON/OFF switch
→
OFF
WHITE BAL switch
→
PRST
Front panel :
SHUTTER switch
→
OFF
Filter knob
→
1B (When 2 filters are used)
1 (When a single filter is used)
Lens :
LENS
→
MANU
IRIS
→
C (CLOSE)
Setup menu (OPERATION menu) :
.
01
*
OUTPUT SEL
HD SDI OUT
→
ON
TEST OUT SELECT
→
SD
.
09
*
GAIN SW
GAIN LOW
→
0 dB
GAIN MID
→
6 dB
GAIN HIGH
→
12 dB