Sony DVP-CX875P Service Manual ▷ View online
7-1
7-1. POWER SUPPLY CHECK
1. ZSSR113M Board
Mode
E-E
Instrument
Digital voltmeter
EVER +5 V Check
Test point
CN201 pin 5
Specification
5.0
± 0.3 Vdc
SW +3.3 V Check
Test point
CN201 pin qs
Specification
3.5
± 0.2 Vdc
SW +5 V Check
Test point
CN201 pin qa
Specification
5.0
± 0.3 Vdc
SW +11 V (M) Check
Test point
CN201 pin 7, 8
Specification
11.0
± 1.0 Vdc
EVER +11 V Check
Test point
CN201 pin 4
Specification
11.0
± 1.0 Vdc
EVER –11 V Check
Test point
CN201 pin 1
Specification
–11.0
± 1.0 Vdc
Checking method:
1) Confirm that each voltage satisfies the specification.
1) Confirm that each voltage satisfies the specification.
! Caution
Never touch the heat sink that is the primary part. It is feared that
you may get an electric shock.
you may get an electric shock.
SECTION 7
ELECTRICAL ADJUSTMENT
DVP-CX875P
In making adjustment, refer to 7-6. 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.
Use the reference disc for PAL for check, and use the refer-
ence disc for NTSC for adjustment.
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.
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 (RMT-D149A)
6) DVD reference disc
4) Digital voltmeter
5) Standard commander (RMT-D149A)
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)
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)
8) Extention Cable (J-6090-107-A)
7-2
3. Checking S Video Output S-Y
<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 level adjustment in test mode
Signal
Color bars
Test point
S VIDEO OUT (S-Y) connector
(75
(75
Ω terminated)
Instrument
Oscilloscope
Specification
1.00
± 0.05 Vp-p
Checking method:
1) In the test mode initial menu “6” Video Level Adjustment, set
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 1.00
± 0.05 Vp-p.
Figure 7-3
4. Checking S Video Output S-C
<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 level adjustment in test mode
Signal
Color bars
Test point
S VIDEO OUT (S-C) connector
(75
(75
Ω terminated)
Instrument
Oscilloscope
Specification
A = 286
± 30 mVp-p (NTSC)
Checking method:
1) In the test mode initial menu “6” Video Level Adjustment, set
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 “A”.
Figure 7-4
7-2. ADJUSTMENT OF VIDEO SYSTEM
1. Video Level Adjustment (MB-107 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 level adjustment in test mode
Signal
Color bars
Test point
VIDEO OUTPUT connector
(75
(75
Ω terminated)
Instrument
Oscilloscope
Adjusting element
RV601
Specification
1.00 Vp-p
Adjusting method:
1) In the test mode initial menu “6” Video Level Adjustment, set
1) In the test mode initial menu “6” Video Level Adjustment, set
so that color bars are generated.
2) Adjust the RV601 to attain 1.00 Vp-p.
Figure 7-1
2. Component Video Output Level Adjustment
(MB-107 BOARD)
<Purpose>
This adjustments component video output. If it is incorrect, cor-
rect brightness will not be attained when connected to, for instance,
projector.
This adjustments component video output. If it is incorrect, cor-
rect 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
connector (75
Ω terminated)
Instrument
Oscilloscope
Adjusting element
RV602
Specification
1.00
Vp-p
Adjusting method:
1) In the test mode initial menu “6” Video Level Adjustment, set
1) In the test mode initial menu “6” Video Level Adjustment, set
so that color bars are generated.
2) Adjust the RV602 to attain 1.00
Vp-p
Figure 7-2
+0.04
–0.02
–0.02
A
+ 0.04
– 0.02
– 0.02
1.00 Vp-p
+0.04
–0.02
–0.02
1.00
±
0.05 Vp-p
+ 0.04
– 0.02
– 0.02
+ 0.04
– 0.02
– 0.02
1.00
Vp-p
+ 0.04
– 0.02
– 0.02
7-3
5. Checking Component Video Output Y
<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 level adjustment in test mode
Signal
Color bars
Test point
COMPONENT VIDEO OUT (Y)
connector (75
connector (75
Ω terminated)
Instrument
Oscilloscope
Specification
1.00
± 0.05 Vp-p
Checking method:
1) In the test mode initial menu “6” Video Level Adjustment, set
1) In the test mode initial menu “6” Video Level Adjustment, set
so that color bars are generated.
2) Confirm that the Y level is 1.00
± 0.05 Vp-p.
Figure 7-5
6. Checking Component Video Output B-Y
<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 level adjustment in test mode
Signal
Color bars
Test point
COMPONENT VIDEO OUT (P
B
)
connector (75
Ω terminated)
Instrument
Oscilloscope
Specification
646
± 50 mVp-p
Checking method:
1) In the test mode initial menu “6” Video Level Adjustment, set
1) In the test mode initial menu “6” Video Level Adjustment, set
so that color bars are generated.
2) Confirm that the B-Y level is 646
± 50 mVp-p .
Figure 7-6
7. Checking Component Video Output R-Y
<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 level adjustment in test mode
Signal
Color bars
Test point
COMPONENT VIDEO OUT (P
R
)
connector (75
Ω terminated)
Instrument
Oscilloscope
Specification
646
± 50 mVp-p
Checking method:
1) In the test mode initial menu “6” Video Level Adjustment, set
1) In the test mode initial menu “6” Video Level Adjustment, set
so that color bars are generated.
2) Confirm that the R-Y level is 646
± 50 mVp-p.
Figure 7-7
1.00
±
0.05 Vp-p
646
±
50 mVp-p
646
±
50 mVp-p
12
1
CN201
RV601
CN601
RV602
RV602
COMP OUT
RV601
VIDEO LEVEL ADJ
1
2
23
22
IC403
IC604
7-6 E
7-3. ADJUSTMENT RELATED PARTS ARRANGEMENT
MB-107 BOARD (SIDE A)
ZSSR113M BOARD (SIDE B)
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