Sony DVP-S7700 Service Manual ▷ View online
7-1
7-1. Power Supply Check
1. HS-930SU Board
Mode
E-E
Instrument
Digital voltmeter
+5.2 V Check
Test point
CN201 1 pin
Specification
5.2 ± 0.2 Vdc
+3.3 V Check
Test point
CN201 4 pin
Specification
3.3 ± 0.2 Vdc
EVER+5 V Check
Test point
CN201 6 pin
Specification
5.4 ± 0.2 Vdc
P_CONT Check
Test point
CN201 8 pin
Specification
4V – 5 Vdc
AU +12 V Check
Test point
CN201 9 pin
Specification
12 Vdc
AU –12 V Check
Test point
CN201 !¡ pin
Specification
–12 Vdc
–12 V Check
Test point
CN201 !™pin
Specification
–12 Vdc
MTR +12 V Check
Test point
CN201 !¢pin
Specification
12 Vdc
Checking method:
1) Confirm that each voltage satisfies the specification.
SECTION 7
ELECTRICAL ADJUSTMENT
DVP-S7700
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
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) Rremote commander (RTM-D107A)
6) DVD reference disc
4) Digital voltmeter
5) Rremote commander (RTM-D107A)
6) DVD reference disc
HLX-501 (J-6090-071-A) (dual layer)
HLX-503 (J-6090-069-A) (single layer)
HLX-503 (J-6090-069-A) (single layer)
7) Extension cable (J-6090-079-A)
MB-84 (CN601)
↔
FL-107 (CN153)
+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. System Clock 27 MHz Adjustment (MB-84 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-84 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
Video Encoder (IC252) check in test
mode menu “0” Syscon Diagnosis
mode menu “0” Syscon Diagnosis
Signal
Color bars
Test point
LINE OUT (VIDEO) connector
(75
(75
Ω
terminated)
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
Video Encoder (IC252) color bars are generated.
2) Adjust the RV251 to attain 1 ± 0.02 Vp-p.
Figure 7-2
2. S-terminal Output Check (MB-84 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.
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 Encoder (IC252) check in test
mode menu “0” Syscon Diagnosis
mode menu “0” Syscon Diagnosis
Signal
Color bars
Test point
S VIDEO OUT (S-Y) connector
(75
(75
Ω
terminated)
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
Video Encoder (IC252) 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-84 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
Video Encoder (IC252) check in test
mode menu “0” Syscon Diagnosis
mode menu “0” Syscon Diagnosis
Signal
Color bars
Test point
COMPONENT VIDEO OUT (B-Y)
connector (75
connector (75
Ω
terminated)
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 ± 0.05 Vp-p
700 ± 30 mVp-p
1 ± 0.02 Vp-p
7-3
7-4 E
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.
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 Encoder (IC252) check in test
mode menu “0” Syscon Diagnosis
mode menu “0” Syscon Diagnosis
Signal
Color bars
Test point
COMPONENT VIDEO OUT (R-Y)
connector (75
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.
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.
This checks component video output Y. If it is incorrect, correct
brightness will not be attained when connected to, for instance,
projector.
Mode
Video Encoder (IC252) check in test
mode menu “0” Syscon Diagnosis
mode menu “0” Syscon Diagnosis
Signal
Color bars
Test point
COMPONENT VIDEO OUT (Y)
connector (75
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.
1) Confirm that the Y level is 1 ± 0.05 Vp-p.
Figure 7-6
6. Checking S Video Output S-C (MB-84 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
Video Encoder (IC252) check in test
mode menu “0” Syscon Diagnosis
mode 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-84 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
Video Encoder (IC252) check in test
mode menu “0” Syscon Diagnosis
mode menu “0” Syscon Diagnosis
Signal
Color bars
Test point
CN252 !™ pin
Instrument
Digital voltmeter
Specification
S-terminal 0 V: 0 Vdc
S-terminal 5 V: 5.0 Vdc
S-terminal 5 V: 5.0 Vdc
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 Vdc.
Confirm that the voltage at CN252 !™ pin is 0 Vdc.
2) Press any key to select S-terminal 5 V.
Confirm that the voltage at CN252 !™ pin is 5.0 Vdc.
7-4. Adjustment Related Parts Arrangement
MB-84 BOARD (Side A)
+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
MB-84 BOARD (Side B)
HS-930SU BOARD (Side A)
700 ± 30 mVp-p
1 ± 0.05 Vp-p
RV251
CN251
9
1
VIDEO
LEVEL
LEVEL
ADJ
CT201
IC206
SYS CLK
(27 MHz) ADJ
(27 MHz) ADJ
8
14
7
1
25
1
2
24
CN252
CN201
1
4
6
8
8
9
11
12
14
8-1
NOTE:
• -XX and -X mean standardized parts, so they may
have some difference from the original one.
• Items marked “*” are not stocked since they are
seldom required for routine service. Some delay
should be anticipated when ordering these items.
should be anticipated when ordering these items.
• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color
Cabinet's Color
• The mechanical parts with no reference number in
the exploded views are not supplied.
• Hardware (# mark) list and accessories and pack-
ing materials are given in the last of the electrical
parts list.
parts list.
SECTION 8
REPAIR PARTS LIST
8-1.
EXPLODED VIEWS
DVP-S7700
Les composants identifiés par une
marque
marque
! sont critiquens pour la
sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.
Ne les remplacer que par une pièce
portant le numéro spécifié.
The components identified by
mark
mark
! or dotted line with mark
! are critical for safety.
Replace only with part number
specified.
specified.
8-1-1. CASE ASSEMBLY
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
5
4-970-487-01 FOOT (F50180S)
6
1-418-075-21 COMMANDER, STANDARD (RMT-D107A/B)
7
3-709-044-01 LID, BATTERY CASE (for RMT-D107A/B)
1
3-052-655-01 COVER, TRAY
2
3-970-608-11 SUMITITE (B3), +BV
3
3-710-901-41 SCREW, TAPPING
4
3-052-658-01 CASE, UPPER
1
2
7
6
3
3
3
4
not
supplied
supplied
not
supplied
supplied
#2
#1
5
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