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1-18 (E)
HDVF-C30W
(2) Diagnostics of A side of the PR-267 board
Diagnostics of the A side of PR-267 board is performed by
connecting the RE-208 EX unit.
Fixtures
.
Connecting cable
.
RE-208 EX unit
Connecting diagram
Preparation
Perform steps 3 to 7 of “1-9-2. How To Extend the RE-208
Board”.
Diagnostics points
Check the following points with an oscilloscope and con-
firm that the waveforms, signals and voltages are normal.
(1) Pin-6/IC1 (B-1)
(2) Pin-1 and 2/CN1 (A-2)
.
Confirm that the signal is output.
(Amplitude of 3 to 5 V)
(3) Pin-15/IC11, IC12 (C-3), IC13 (B-3)
.
Clock pulse for video signal : 37 MHz
(4) Voltage
.
Collector/Q3 (B-1) : DC 3.0
±
0.1 V
.
Collector/Q16 (A-1) : DC 2.5
±
0.1 V
2.5 V
1.9 V
0.4 V
Y VIDEO
CN2
CN1
CN7
Q16
Q3
X1
IC13
IC12
IC11
IC1
PR-267 (A side)
CN1
CN1
CN2
EX-908
EX-907
PR-267
RE-208
CN1
CN1
CN2
CN2
Oscilloscope
Camera
Connecting
cable
Connecting
harness
.
Pin-8/X1 (A-2) :
DC 1.0 to 2.0 V
.
Pin-7/CN7 (C-1) :
Voltage changes from 0 to 2.0 V
when RV6/VR-280 board is rotated.
.
Pin-8/CN7 (C-1) :
Voltage changes from 0 to 2.0 V
when the CONTR control is rotated.
.
Pin-9/CN7 (C-1) :
Voltage changes from 0 to 2.0 V
when RV4/VR-280 board is rotated.
.
Pin-10/CN7 (C-1) :
Voltage changes from 0 to 2.0 V
when the BRIGHT control is
rotated.
.
Pin-11/CN7 (C-1) :
Voltage changes from 0 to 2.0 V
when RV2/VR-280 board is rotated.
.
Pin-12/CN7 (C-1) :
Voltage changes from 0 to 2.0 V
when the PEAKING control is
rotated.
Содержание Electronic Viewfinder HDVF-C30W
Страница 1: ...ELECTRONIC VIEWFINDER HDVF C30W MAINTENANCE MANUAL 1st Edition Serial No 10001 and Higher ...
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Страница 60: ...Printed in Japan Sony Corporation 2003 4 16 B P Company 2003 HDVF C30W SY J E 9 968 009 01 ...