Sony DVP-S715 Service Manual ▷ View online
7-1
7-1. Power Supply Check
1. HS-930SH Board
Mode
E-E
Instrument
Digital voltmeter
+5.2V Check
Test point
CN201 1 pin
Specification
5.2 V ± 0.2 V
+3.3V Check
Test point
CN201 4 pin
Specification
3.3 V ± 0.2 V
EVER+5V Check
Test point
CN201 6 pin
Specification
5.4 V ± 0.2 V
P_CONT Check
Test point
CN201 8 pin
Specification
4 V – 5 V
AU +12V Check
Test point
CN201 9 pin
Specification
12 V V
AU –12V Check
Test point
CN201 !¡ pin
Specification
–12 V V
–12V Check
Test point
CN201 !™ pin
Specification
–12 V V
MTR +12V Check
Test point
CN201 !¢ pin
Specification
12 V V
Checking method:
1) Confirm that each voltage satisfies the specification.
SECTION 7
ELECTRICAL ADJUSTMENT
DVP-S715
In making adjustment, refer to 7-4. Adjustment
Related Parts Arrangement.
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.
be seen only with the NTSC monitor. Therefore, for diag-
nostic check, use the monitor that supports both NTSC
and PAL modes.
This section describes procedures and instructions necessary for
adjusting electrical circuits in this set.
adjusting electrical circuits in this set.
Instruments required:
1) Color monitor TV
2) Oscilloscope 1 or 2 phenomena, band width over 100 MHz,
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
6) DVD reference disc
4) Digital voltmeter
5) Standard commander
6) DVD reference disc
HLX-502 (J-6090-068-A) (dual layer)
HLX-503 (J-6090-069-A) (single layer)
HLX-503 (J-6090-069-A) (single layer)
+1.0
–2.0
–2.0
+2.0
–1.0
–1.0
+2.0
–1.0
–1.0
+1.0
–2.0
–2.0
7-2
7-2. Adjustment of System Control
1. 27MHz Free Run (MB-78 board)
<Purpose>
27 MHz is the reference clock for the MPEG system, and if it is
not adjusted correctly, checking of 22 MHz and 33 MHz lock in
the following steps will result in NG.
27 MHz is the reference clock for the MPEG system, and if it is
not adjusted correctly, checking of 22 MHz and 33 MHz lock in
the following steps will result in NG.
Mode
E-E
Test point
IC206 8 pin
Instrument
Oscilloscope, Frequency counter
Adjusting element
CT201
Specification
27000000 ± 100 Hz
Adjusting method:
1) Confirm that the waveform at TP018 is normal.
2) Adjust CT201 to attain 27000000 ± 100 Hz.
1) Confirm that the waveform at TP018 is normal.
2) Adjust CT201 to attain 27000000 ± 100 Hz.
Figure 7-1
7-3. Adjustment of Video System
1. Video Level Adjustment (MB-78 board)
<Purpose>
This adjustment is made to satisfy the NTSC Standard, and if not
adjusted correctly, the brightness will be too large or small.
This adjustment is made to satisfy the NTSC Standard, and if not
adjusted correctly, the brightness will be too large or small.
Mode
CXD1914 (ENC) check in test mode
menu “0” Syscon Diagnosis
menu “0” Syscon Diagnosis
Signal
Color bars
Test point
CN252 !¢ pin (terminating 75
Ω
)
Instrument
Oscilloscope
Adjusting element
RV251
Specification
1 ± 0.02 Vp-p
Adjusting method:
1) In the test mode initial menu “0” Syscon Diagnosis, set so that
1) In the test mode initial menu “0” Syscon Diagnosis, set so that
CXD1914 color bars are generated.
2) Adjust the RV251 to attain 1 ± 0.02 Vp-p.
Figure 7-2
2. S-terminal Output Check (MB-78 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 an S-
terminal cable.
Check S-terminal video output. If it is incorrect, pictures will not
be displayed correctly in spite of connection to the TV with an S-
terminal cable.
Mode
CXD1914 (ENC) check in test mode
menu “0” Syscon Diagnosis
menu “0” Syscon Diagnosis
Signal
Color bars
Test point
CN252 0 pin (terminating 75
Ω
)
Instrument
Oscilloscope
Specification
1 ± 0.05 Vp-p
Checking method:
1) In the test mode initial menu “0” Syscon Diagnosis, set so that
1) In the test mode initial menu “0” Syscon Diagnosis, set so that
CXD1914 color bars are generated.
2) Confirm that the S-Y level is 1 ± 0.05 Vp-p.
Figure 7-3
3. Checking Component Video Output B-Y
(MB-78 board)
<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.
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
CXD1914 (ENC) check in test mode
menu “0” Syscon Diagnosis
menu “0” Syscon Diagnosis
Signal
Color bars
Test point
CN251 4 pin (terminating 75
Ω
)
Instrument
Oscilloscope
Specification
700 ± 30 mVp-p
Checking method:
1) Confirm that the B-Y level is 700 ± 30 mVp-p.
1) Confirm that the B-Y level is 700 ± 30 mVp-p.
Figure 7-4
1 ± 0.02 Vp-p
1 ± 0.05 Vp-p
7-3
+0
–1.5
–1.5
6. Checking S Video Output S-C (MB-78 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.
This checks whether the S-C satisfies the NTSC Standard. If it is
not correct, the colors will be too dark or light.
Mode
CXD1914 (ENC) check in test mode
menu “0” Syscon Diagnosis
menu “0” Syscon Diagnosis
Signal
Color bars
Test point
CN252 !™ pin
Instrument
Oscilloscope
Specification
286 ± 20 mVp-p
Connection:
Checking method:
1) Confirm that the S-C burst is 286 ±20 mVp-p.
1) Confirm that the S-C burst is 286 ±20 mVp-p.
Figure 7-7
7. Checking S Video Output DC Level (MB-78 board)
<Purpose>
This checks signals for S1 and S2 compatible TV. If they are not
correct, the TV will not switch automatically to letter box, etc.
This checks signals for S1 and S2 compatible TV. If they are not
correct, the TV will not switch automatically to letter box, etc.
Mode
CXD1914 (ENC) check in test mode
menu “0” Syscon Diagnosis
menu “0” Syscon Diagnosis
Signal
Color bars
Test point
CN252 !™ pin
Instrument
Digital voltmeter
Specification
S-terminal 0 V: 0 V
S-terminal 5 V: 5.0 V
S-terminal 5 V: 5.0 V
Connection:
Checking method:
1) In the test mode initial menu “0” Syscon Diagnosis, select S-
1) In the test mode initial menu “0” Syscon Diagnosis, select S-
terminal 0 V.
Confirm that the voltage at CN252 !™ pin is 0 V.
Confirm that the voltage at CN252 !™ pin is 0 V.
2) Press any key to select S-terminal 5 V.
Confirm that the voltage at CN252 !™ pin is 5.0 V.
4. Checking Component Video Output R-Y
(MB-78 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.
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
CXD1914 (ENC) check in test mode
menu “0” Syscon Diagnosis
menu “0” Syscon Diagnosis
Signal
Color bars
Test point
CN251 8 pin (terminating 75
Ω
)
Instrument
Oscilloscope
Specification
700 ± 30 mVp-p
Checking method:
1) Confirm that the R-Y level is 700 ± 30 mVp-p.
1) Confirm that the R-Y level is 700 ± 30 mVp-p.
Figure 7-5
5. Checking Component Video Output Y
(MB-78 board)
<Purpose>
This checks component video output Y. If it is incorrect, correct
brightness will not be attained when connected to, for instance,
projector.
This checks component video output Y. If it is incorrect, correct
brightness will not be attained when connected to, for instance,
projector.
Mode
CXD1914 (ENC) check in test mode
menu “0” Syscon Diagnosis
menu “0” Syscon Diagnosis
Signal
Color bars
Test point
CN251 6 pin (terminating 75
Ω
)
Instrument
Oscilloscope
Specification
1 ± 0.05 Vp-p
Checking method:
1) Confirm that the Y level is 1 ± 0.05 Vp-p.
1) Confirm that the Y level is 1 ± 0.05 Vp-p.
Figure 7-6
+0
–1.5
–1.5
+0
–1.5
–1.5
286 ± 20 mVp-p
11
12
100
µ
F
75
Ω
±
1%
100k
±
1%
CN252
+
Digital voltmeter
11
12
100
µ
F
75
Ω
±
1%
100k
±
1%
CN252
+
Oscilloscope
7-4
7-4. Adjustment Related Parts Arrangement
MB-78 BOARD (Side A)
1
9
CN251
CT201
27MHz FREERUN
1
7
8
14
IC206
RV251
VIDEO
LEVEL
LEVEL
CN201
1
4
6
8
8
9
11
12
14
HS-930SH BOARD (Side A)
Click on the first or last page to see other DVP-S715 service manuals if exist.