Sony Electronic Viewfinder HDVF-C30W, Руководство по обслуживанию

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1-14 (E)
HDVF-C30W
Preparations
1. Remove the viewfinder barrel by pushing the RE-
LEASE knob. (Refer to Section 1-7-2, step 1.)
2. Perform steps 1 to 3 and 5 of “1-7-1. Replacing the
LCD Panel.”
3. Remove the RE-208 board.
(Refer to Section 1-7-1, step 6.)
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Do not disconnect the harness from the connector CN2
on the RE-208 board.
4. Remove the PR-267 board.
(Refer to Section 1-7-1, step 7.)
5. Install the RE-208 board to the PR-267 board with
three screws (M2
x
5).
6. Connect the EX-909 board to the PR-267 board as
shown in the figure below.
7. Connect the connecting cable to the connector (CN1)
on the PR-267 board and the camera.
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Attach the insulating tape to the GND terminal of the
connecting cable.
8. Turn on the power of the camera and select the color
bar signal as the output signal from the camera (Set the
OUTPUT/DCC switch on the camera side panel to the
BARS position).
9. Set the switch S2-4 of the PR-267 board to ON.
Diagnostics points
(1) Video signal system check
Connect an oscilloscope to TP101, TP102, and TP103 of
the EX-909 board and confirm that the sawtooth wave-
forms of the R, G, and B signal are normal.
When the EX-909 board is connected to the CN5 connector :
TP101 : Bch, TP102 : Gch, TP103 : Rch
When the EX-909 board is connected to the CN6 connector :
TP101 : Rch, TP102 : Gch, TP103 : Bch
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Check the 8-bit output signal of R, G, and B by connecting
an oscilloscope to TP2 to TP25 on the EX-909 board.
(Refer to table 1.)
Normal sawtooth waveform
(Common to R, G, and B signals)
1H period
EX-909
PR-267 board