Sony Electronic Viewfinder HDVF-C30W, Руководство по обслуживанию

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1-19 (E)
HDVF-C30W
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
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 Voltage check
TP3 UNREG DC 10.5 to 17 V
TP5 CONT_MAX DC 0.28 V or less
TP6 CONT_GND 0 V
TP8 + 3.3 V DC 3.1
±
0.1 V
TP10 POWER_OFF OPEN or DC 5 V
TP11 _ 6.6 V DC _ 7.2 V
TP13
+
19.5 V DC
+
20
±
1 V
TP14 NC _
TP15 + 10.5 V DC + 10.5
±
0.4 V
TP16 CONTRAST DC 0 to 2.0 V
CN1
CN1
CN2
EX-908
EX-907
PR-267
RE-208
CN1
CN1
CN2
CN2
Connecting harness
Camera
DC
Voltmeter
Connecting cable
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
Luminance meter
1m
+ 1.0
_ 0.4