Checking Component Video Output R-Y; Checking Component Video Output Y; Checking Rgb Output R; Checking Rgb Output G - Sony DVP-S7700 Service Manual

4. Checking Component Video Output R-Y

(MB-84 board)
<Purpose>
This checks component video output R-Y. If it is incorrect, cor-
rect colors will not be displayed when connected to, for instance,
projector.
Video Encoder (IC252) check in test
Mode
mode menu "0" Syscon Diagnosis
Signal Color bars
COMPONENT VIDEO OUT (R-Y)
Test point
connector (75 Ω terminated)
Instrument Oscilloscope
Specification 700 ± 30 mVp-p
Checking method:
1) Confirm that the R-Y level is 700 ± 30 mVp-p.
Figure 7-5

5. Checking Component Video Output Y

(MB-84 board)
<Purpose>
This checks component video output Y. If it is incorrect, correct
brightness will not be attained when connected to, for instance,
projector.
Video Encoder (IC252) check in test
Mode
mode menu "0" Syscon Diagnosis
Signal Color bars
COMPONENT VIDEO OUT (Y)
Test point
connector (75 Ω terminated)
Instrument Oscilloscope
Specification 1 ± 0.05 Vp-p
Checking method:
1) Confirm that the Y level is 1 ± 0.05 Vp-p.
Figure 7-6

6. Checking RGB Output R

(MB-84 board) (AEP, UK model)
<Purpose>
This checks RGB output R. If it is incorrect, pictures will not be
displayed correctly in spite of connection to the TV with an EURO
AV connecting cord.
Mode
Signal
Test point
Instrument
Specification
Checking method:
1) Confirm that the R level is 700 ± 30 mVp-p.
700 ± 30 mVp-p

7. Checking RGB Output G

(MB-84 board) (AEP, UK model)
<Purpose>
This checks RGB output G. If it is incorrect, pictures will not be
displayed correctly in spite of connection to the TV with an EURO
AV connecting cord.
Mode
Signal
Test point
Instrument
Specification
Checking method:
1) Confirm that the G level is 700 ± 30 mVp-p.
1 ± 0.05 Vp-p
7-3
Video Encoder (IC252) check in test
mode menu "0" Syscon Diagnosis
Color bars
EURO AV 1 (RGB)-TV connector
!∞ pin (75 Ω terminated)
Oscilloscope
700 ± 30 mVp-p
700 ± 30 mVp-p
Figure 7-7
Video Encoder (IC252) check in test
mode menu "0" Syscon Diagnosis
Color bars
EURO AV 1 (RGB)-TV connector
!¡ pin (75 Ω terminated)
Oscilloscope
700 ± 30 mVp-p
700 ± 30 mVp-p
Figure 7-8