DOWNLOAD Sony DVP-S325 / DVP-S525D / DVP-S725D Service Manual ↓ Size: 55.77 MB | Pages: 127 in PDF or view online for FREE

Model
DVP-S325 DVP-S525D DVP-S725D
Pages
127
Size
55.77 MB
Type
PDF
Document
Service Manual
Brand
Device
DVD
File
dvp-s325-dvp-s525d-dvp-s725d.pdf
Date

Sony DVP-S325 / DVP-S525D / DVP-S725D Service Manual ▷ View online

7-1
7-1. POWER  SUPPLY  ADJUSTMENT
1.   HS-030SH Board
Mode
E-E
Instrument
Digital voltmeter
+5 V Check
Test point
CN202 pin 5
Specification
5.0 ± 0.2 Vdc
+3.3 V Check
Test point
CN202 pin 7
Specification
3.3 ± 0.2 Vdc
EVER+5 V Check
Test point
CN203 pin 2
Specification
5.0 ± 0.2 Vdc
P_CONT Check
Test point
CN203 pin 1
Specification
4V – 5 Vdc
A +12 V Check
Test point
CN202 pin 1
Specification
9.5       Vdc
–12 V Check
Test point
CN203 pin 5
Specification
–12.0 ± 1.0 Vdc
M +12 V Check
Test point
CN202 pin 2
Specification
12.0 ± 1.0 Vdc
Checking method:
1) Confirm that each voltage satisfies the specification.
SECTION  7
ELECTRICAL ADJUSTMENT
DVP-S325/S525D/S725D
+1.5
–0.5
In making adjustment, refer to 7-3. Adjustment
Related Parts Arrangement.
Note:
During diagnostic check, the characters and color bars can
be seen only with the NTSC monitor. Therefore, for diag-
nostic check, use the monitor that supports both NTSC and
PAL modes.
Use the reference disc for PAL for check, and use the refer-
ence disc for NTSC for adjustment.
This section describes procedures and instructions necessary for
adjusting electrical circuits in this set.
Instruments required:
1) Color monitor TV
2) Oscilloscope 1 or 2 phenomena, band width over 100 MHz,
with delay mode
3) Frequency counter (over 8 digits)
4) Digital voltmeter
5) Standard commander (RMT-D108O/D108P/D109P/D111O/
D111P)
6) DVD reference disc
HLX-501 (J-6090-071-A) (dual layer) (NTSC)
HLX-503 (J-6090-069-A) (single layer) (NTSC)
HLX-504 (J-6090-088-A) (single layer) (NTSC)
HLX-505 (J-6090-089-A) (dual layer) (NTSC)
HLX-506 (J-6090-077-A) (single layer) (PAL)
HLX-507 (J-6090-078-A)(dual layer) (PAL)
7) SACD reference disc
HLXA-509 (J-6090-090-A)
7-2
7-2. ADJUSTMENT  OF  VIDEO  SYSTEM
1. Video Level Adjustment (MB-82/85 BOARD)
<Purpose>
This adjustment is made to satisfy the NTSC standard, and if not
adjusted correctly, the brightness will be too large or small.
Mode
Video level adjustment in test mode
Signal
Color bars
Test point
LINE OUT (VIDEO) connector
(75 
Ω 
terminated)
Instrument
Oscilloscope
Adjusting element
RV401
Specification
1.0 ± 0.02 Vp-p
Adjusting method:
1) In the test mode initial menu “6” Video Level Adjustment, set
so that color bars are generated.
2) Adjust the RV401 to attain 1.0 ± 0.02 Vp-p.
Figure 7-1
2. S-terminal Output Check (MB-82/85 BOARD)
<Purpose>
Check S-terminal video output.  If it is incorrect, pictures will not
be displayed correctly in spite of connection to the TV with a S-
terminal cable.
Mode
Video level adjustment in test mode
Signal
Color bars
Test point
S VIDEO OUT (S-Y) connector
(75 
Ω 
terminated)
Instrument
Oscilloscope
Specification
1.0 ± 0.1 Vp-p
Checking method:
1) In the test mode initial menu “6” Video Level Adjustment, set
so that color bars are generated.
2) Confirm that the S-Y level is 1.0 ± 0.1 Vp-p.
Figure 7-2
3. Checking Component Video Output B-Y
(MB-82/85 BOARD) (DVP-S525D: Australian/S725D)
<Purpose>
This checks component video output B-Y.  If it is incorrect, cor-
rect colors will not be displayed when connected to, for instance,
projector.
Mode
Video level adjustment in test mode
Signal
Color bars
Test point
COMPONENT VIDEO OUT (B-Y)
connector (75 
Ω 
terminated)
Instrument
Oscilloscope
Specification
700 ± 70 mVp-p
Checking method:
1) Confirm that the B-Y level is 700 ± 70 mVp-p.
Figure 7-3
4. Checking Component Video Output R-Y
(MB-82/85 BOARD) (DVP-S525D: Australian/S725D)
<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.
Mode
Video level adjustment in test mode
Signal
Color bars
Test point
COMPONENT VIDEO OUT (R-Y)
connector (75 
Ω 
terminated)
Instrument
Oscilloscope
Specification
700 ± 70 mVp-p
Checking method:
1) Confirm that the R-Y level is 700 ± 70 mVp-p.
Figure 7-4
700 ± 70 mVp-p
1.0 ± 0.02 Vp-p
1.0 ± 0.1 Vp-p
700 ± 70 mVp-p
7-3
700 ± 70 mVp-p
700 ± 70 mVp-p
5. Checking Component Video Output Y
(MB-82/85 BOARD) (DVP-S525D:  Australian/S725D)
<Purpose>
This checks component video output Y.  If it is incorrect, correct
brightness will not be attained when connected to, for instance,
projector.
Mode
Video level adjustment in test mode
Signal
Color bars
Test point
COMPONENT VIDEO OUT (Y)
connector (75 
Ω 
terminated)
Instrument
Oscilloscope
Specification
1.0 ± 0.1 Vp-p
Checking method:
1) Confirm that the Y level is 1.0 ± 0.1 Vp-p.
Figure 7-5
6. Checking RGB Output R
(MB-85 BOARD) (AEP, UK, Russian 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
In test mode,
Push 
[0]
 for Syscon Diagnosis and
push 
[7]
 for Video and push 
[5]
 for
RGB out
Signal
Color bars
Test point
EURO AV 1 (RGB)-TV connector
pin !∞ (75 
Ω 
terminated)
Instrument
Oscilloscope
Specification
700 ± 70 mVp-p
Checking method:
1) Confirm that the R level is 700 ± 70 mVp-p.
Figure 7-6
1.0 ± 0.1 Vp-p
7. Checking RGB Output G
(MB-85 BOARD) (AEP, UK, Russian 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
In test mode,
Push 
[0]
 for Syscon Diagnosis and
push 
[7]
 for Video and push 
[5]
 for
RGB out
Signal
Color bars
Test point
EURO AV 1 (RGB)-TV connector
pin !¡ (75 
Ω 
terminated)
Instrument
Oscilloscope
Specification
700 ± 70 mVp-p
Checking method:
1) Confirm that the G level is 700 ± 70 mVp-p.
Figure 7-7
8. Checking RGB Output B
(MB-85 BOARD) (AEP, UK, Russian model)
<Purpose>
This checks RGB output B.  If it is incorrect, pictures will not be
displayed correctly in spite of connection to the TV with an EURO
AV connecting cord.
Mode
In test mode,
Push 
[0]
 for Syscon Diagnosis and
push 
[7]
 for Video and push 
[5]
 for
RGB out
Signal
Color bars
Test point
EURO AV 1 (RGB)-TV connector
pin 7 (75 
Ω 
terminated)
Instrument
Oscilloscope
Specification
700 ± 70 mVp-p
Checking method:
1) Confirm that the B level is 700 ± 70 mVp-p.
Figure 7-8
700 ± 70 mVp-p
7-4
9. Checking S Video Output S-C (MB-82/85 BOARD)
<Purpose>
This checks whether the S-C satisfies the NTSC Standard.  If it is
not correct, the colors will be too dark or light.
Mode
Video level adjustment in test mode
Signal
Color bars
Test point
S VIDEO OUT (S-C) connector
(75 
 terminated)
Instrument
Oscilloscope
Specification
286 ± 50 mVp-p (NTSC)
300 ± 100 mVp-p (PAL)
Checking method:
1) In the test mode initial menu “6” Video Level Adjustment, set
so that color bars are generated.
2) Confirm that the S-C burst is 300 ± 100 mVp-p.
Figure 7-9
300 ± 100 mVp-p
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