Sony HDVF-C30W Maintenance Manual page 25

1-10-2. Voltage Check of the RE-208 Board
Equipment required
. Camera
HDC-950 or HDW-750/750P/730 or HDW-F900
. DC Voltmeter
Fixtures
. Connecting cable
Sony part number : 1-827-086-21
. RE-208 EX unit
Sony part number : A-8346-443-A
Constituent parts
EX-907 board : 1 piece
EX-908 board : 1 piece
Connecting harness : 1 piece
Connecting diagram
PR-267
CN2
Camera
CN1
Connecting cable
Preparation
Perform steps 1 to 7 of "1-9-2. How to Extend the RE-208
Board".
Voltage check points
Check the voltage at the following TP terminal on the EX-
908 board.
TP No. TP name
TP3 UNREG
TP5 CONT_MAX
TP6 CONT_GND
TP8 +3.3 V
TP10 POWER_OFF
TP11 _6.6 V
TP13 +19.5 V
TP14 NC
+10.5 V
TP15
TP16 CONTRAST
HDVF-C30W
Connecting harness
CN2
CN2
CN1 EX-908
EX-907
CN1
CN1
DC
RE-208
Voltmeter
Voltage check
DC 10.5 to 17 V
DC 0.28 V or less
0 V
DC 3.1 ± 0.1 V
OPEN or DC 5 V
+1.0
DC _7.2 V
_0.4
DC +20 ± 1 V
_
DC +10.5 ± 0.4 V
DC 0 to 2.0 V
1-11. How to Measure Luminance
Equipment required
. Camera
HDC-950 or HDW-750/750P/730 or HDW-F900
Fixtures
. Pattern box PTB-500
Sony part No. : J-6029-140-B
. Luminance Meter
Minolta Model LS-100 or equivalent (that must have
already been calibrated before)
Procedure
1. Remove the viewfinder barrel by pushing the RE-
LEASE knob. (Refer to Section 1-7-2, step 2.)
2. Install the front chassis of the HDVF-C30W in the
camera.
3. Rotate the BRIGHT control and CONTR control fully
clockwise (MAX) beforehand.
4. Light on the pattern box and warm it up for about 30
minutes.
5. Shoot the pattern box with the camera.
(Be sure that the screen is entirely white.)
6. Open the iris and confirm that all of the output signals
from the camera are entirely white and their levels are
100% or more.
n
Be sure that the luminance meter is fixed and the
pattern box is shot from the front.
7. Measure luminance from the front of the LCD panel of
the HDVF-C30W.
LCD panel
1 m
Luminance meter
1-19 (E)