Sony DVP-NS638P Service Manual ▷ View online
6-8
DVP-NS638P
8G
7G
6G
5G
4G
3G
2G
1G
-
-
col
-
col
-
-
Dp
Dp
Dp
Dp
Dp
Dp
-
a
a
a
a
a
a
a
k
k
k
k
k
k
k
j
j
j
j
j
j
j
-
h
h
h
h
h
h
h
-
b
b
b
b
b
b
b
-
ff
ff
ff
f
-
m
m
m
m
m
m
m
-
s
s
s
s
s
s
s
-
g
g
g
g
g
g
g
-
c
c
c
c
c
c
c
-
e
e
e
e
e
e
e
-
n
n
n
n
n
n
n
-
p
p
p
p
p
p
p
-
r
r
r
r
r
r
r
-
d
d
d
d
d
d
d
ANODE CONNECTION
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
P15
P16
P17
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
P15
P16
P17
8G
7G
6G
5G
4G
3G
2G
1G
Dp
(5G, 3G)
(7G~2G)
col
(7G~1G)
a
f
h
g
e
r
p
n
s
c
m
d
j
k
b
6-8E
7-1
DVP-NS638P
This section describes procedures and instructions necessary for
adjusting electrical circuits in this unit.
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 multimeter
(5) Standard commander (RMT-D187A/D187P/D189P)
(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)
7-1. SWITCHING REGULATOR OUTPUT
VOLTAGE CHECK
SRV2184WW
Mode
Except standby
Instrument
Digital multimeter
EVER+5V Check
Test point
Test point
CN201 pin 4
Specification
5.0 ± 0.3 Vdc
SW+3.3V Check
Test point
Test point
CN201 pin 5
Specification
3.4 ± 0.2 Vdc
SW+5V Check
Test point
Test point
CN201 pin 6
Specification
5.0 ± 0.3 Vdc
SW+8V Check
Test point
Test point
CN201 pin 1
Specification
8.2 ± 0.3 Vdc
EVER+11V Check
Test point
Test point
CN201 pin 3
Specification
11.0 Vdc
EVER–10V Check
Test point
Test point
CN201 pin q;
Specification
–10.2 Vdc
Checking method:
(1) Confirm that each voltage satisfies the specification.
Caution!
Please do not touch any electrical parts at primary circuit to avoid
electrical shock.
SECTION 7
ELECTRICAL ADJUSTMENT
+2.5
–0.5
+0.5
–14.0
7-2
DVP-NS638P
7-2. ADJUSTMENT OF VIDEO SYSTEM
1.
Checking Video Level
<Purpose>
Checking Video Level the NTSC/PAL standard, and if not correct,
the brightness will be too large or small.
Mode
HLX-504 play back
Signal
Color bars 100%
Test point
LINE OUT (VIDEO) connector
(75 Ω terminated)
Instrument
Oscilloscope
Specification
1.0 ± 0.08 Vp-p/ 75 Ω termination
Adjusting method:
(1) In the Video Signal menu “1” Color Bar 100% play back.
(2) Confirm that the Video Level is 1.0 ± 0.08 Vp-p.
Fig. 7-1.
2.
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.
Mode
HLX-504 play back
Signal
Color bars
Test point
COMPONENT VIDEO OUT (Y)
connector, (75 Ω terminated)
Instrument
Oscilloscope
Specification
1.0 ± 0.08 Vp-p/ 75 Ω termination
Checking method:
(1) In the Video Signal menu “1” Color Bar 100% play back.
(2) Confirm that the Y level is 1.0 ± 0.08 Vp-p.
Fig. 7-2.
1.0 ± 0.08 Vp-p/
75 termination
1.0 ± 0.08 Vp-p/
75 termination
7-4
DVP-NS638P
7-3E
3.
Checking Component Video Output B-Y
<Purpose>
This checks component video output B-Y. If it is incorrect, correct
colors will not be displayed when connected to, for instance, projector.
Mode
HLX-504 play back
Signal
Color bars
Test point
COMPONENT VIDEO OUT (P
B
)
connector (75 Ω terminated)
Instrument
Oscilloscope
Specification
B = 700 ± 70mVp-p/ 75 Ω termination
Checking method:
(1) In the Video Signal menu “1” Color Bar 100% play back.
(2) Confirm that the B-Y level is B.
Fig. 7-3.
4.
Checking Component Video Output R-Y
<Purpose>
This checks component video output R-Y. If it is incorrect, correct
colors will not be displayed when connected to, for instance, projector.
Mode
HLX-504 play back
Signal
Color bars
Test point
COMPONENT VIDEO OUT (P
R
)
connector (75 Ω terminated)
Instrument
Oscilloscope
Specification
B = 700 ± 70 mVp-p/ 75 Ω termination
Checking method:
(1) In the Video Signal menu “1” Color Bar 100% play back.
(2) Confirm that the R-Y level is B.
Fig. 7-4.
B
B
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