Sony DVP-CX995V Service Manual ▷ View online
33
DVP-CX995V
SECTION 6
ELECTRICAL ADJUSTMENTS
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) Remote commander (RM-ASP001)
6) CD reference disc
4) Digital voltmeter
5) Remote commander (RM-ASP001)
6) CD reference disc
LUV-P01 (4-999-032-01)
YEDS-18 (3-702-101-01)
PATD-012 (4-225-203-01)
YEDS-18 (3-702-101-01)
PATD-012 (4-225-203-01)
7) DVD reference disc
TDV-520CS0 (J-2501-236-A) (single layer) (NTSC)
HLX-503 (J-6090-069-A) (single layer) (NTSC)
HLX-504 (J-6090-088-A) (single layer) (NTSC)
TDV-540C (J-2501-235-A) (dual layer) (NTSC, Opposite)
HLX-501 (J-6090-071-A) (dual layer) (NTSC)
HLX-505 (J-6090-089-A) (dual layer) (NTSC)
HLX-503 (J-6090-069-A) (single layer) (NTSC)
HLX-504 (J-6090-088-A) (single layer) (NTSC)
TDV-540C (J-2501-235-A) (dual layer) (NTSC, Opposite)
HLX-501 (J-6090-071-A) (dual layer) (NTSC)
HLX-505 (J-6090-089-A) (dual layer) (NTSC)
8) SA-CD reference disc
HLXA-509 (J-6090-090-A)
9) Extension Cable (J-2501-199-A)
6-1. OPTICAL TRAVERSE UNIT CHECK
In the case of quality judgement when the defect of the optical
traverse unit like the skip etc. is thought, and in case of operation
confirming when replacing optical traverse unit, select “ALL” of
“1. DRIVE AUTO ADJUSTMENT” in the test mode (refer to page
23, 25), adjust DVD-SL (single layer), CD and DVD-DL (dual layer),
and confirm whether the result of each setting value is the range of
the following specification.
traverse unit like the skip etc. is thought, and in case of operation
confirming when replacing optical traverse unit, select “ALL” of
“1. DRIVE AUTO ADJUSTMENT” in the test mode (refer to page
23, 25), adjust DVD-SL (single layer), CD and DVD-DL (dual layer),
and confirm whether the result of each setting value is the range of
the following specification.
DVD-SL
CD
DVD-DL
L0
L1
An.Off.A
20 to E0
20 to E0
20 to E0
–
An.Off.B
20 to E0
20 to E0
20 to E0
–
An.Off.C
20 to E0
20 to E0
20 to E0
–
An.Off.D
20 to E0
20 to E0
20 to E0
–
An.Off.E
–
20 to E0
–
–
An.Off.F
–
20 to E0
–
–
An.G.Main
0E to 1C
0E to 1A
1D to 28
1D to 28
An.G.Side
–
0C to 1C
–
–
RF level
70 to F0
70 to F0
60 to F0
60 to F0
FE S L0
74 to FF
74 to FF
54 to FF
–
FE S L1
–
–
–
54 to FF
VTS2
00 to 10
–
–
–
TE levDVD
28 to 48
–
28 to 48
28 to 48
TE levCD
–
34 to 60
–
–
TE Offset
D0 to FF
A0
to
CC
20 to E0
20 to E0
00 to 30
00 to 30
00 to 30
FCS Gain
20 to 3F
18 to 38
20 to 48
20 to 48
TRK Gain
30 to 50
30 to 50
30 to 50
30 to 50
FCS Bal.1
–
–
–
–
FCS Bal.2
36 to 4F
36 to 4F
36 to 4F
36 to 4F
REFQ1
–
–
–
–
REFQ2
0C to 30
14 to 24
0C to 30
0C to 30
Jitter
07 to 14
07 to 0F
07 to 14
–
6-2. POWER SUPPLY CHECK
Mode: E-E
Instrument: Digital voltmeter
Instrument: Digital voltmeter
EVER +3.3 V Check
Check point
JL381 on the AV board
Specification
3.3
± 0.2 V
SW +4.5 V Check
Check point
JL378 on the AV board
Specification
4.5
± 0.2 V
SW +5 V Check
Check point
JL382 on the AV board
Specification
5.0
± 0.3 V
SW +12 V Check
Check point
JL376 on the AV board
Specification
12.0
± 1.0 V
EVER +12 V Check
Check point
JL383 on the AV board
Specification
12.0
± 1.0 V
SW –12 V Check
Check point
JL373 on the AV board
Specification
–12.0
± 1.0 V
EVER –12 V Check
Check point
JL372 on the AV board
Specification
–12.0
± 1.0 V
Checking method:
1) Confirm that each voltage satisfies the specification.
1.0
+0.04
Vp-p
–0.02
6-3. ADJUSTMENT OF VIDEO SYSTEM
6-3-1. Video Level Adjustment
<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
Check point
VIDEO LINE OUT connector (J103)
(75
Ω terminated)
Instrument
Oscilloscope
Adjusting element
RV501
Specification
1.0
+
–
–
0
0
0
.
.
.
0
0
0
4
2
2
Vp-p
Adjusting method:
1) In the Test Mode Menu, select the “6. Video Level Adjustment”
so that color bars are generated.
2) Adjust the RV501 to attain 1.0
+
–
–
0
0
0
.
.
.
0
0
0
4
2
2
Vp-p.
Fig. 6-1
34
DVP-CX995V
1.0
±
0.05 Vp-p
6-3-5.
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
Check point
COMPONENT VIDEO OUT (Y)
connector (J102) (75
Ω terminated)
Instrument
Oscilloscope
Specification
1.0
± 0.05 Vp-p
Checking method:
1) In the Test Mode Menu, select the “6. Video Level Adjustment”
so that color bars are generated.
2) Confirm that the Y level is 1.0
± 0.05 Vp-p.
Fig. 6-5
1.0
±
0.05 Vp-p
6-3-3.
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
Check point
S VIDEO OUT (S-Y) connector (J101)
(75
Ω terminated)
Instrument
Oscilloscope
Specification
1.0
± 0.05 Vp-p
Checking method:
1) In the Test Mode Menu, select the “6. Video Level Adjustment”
so that color bars are generated.
2) Confirm that the S-Y level is 1.0
± 0.05 Vp-p.
Fig. 6-3
6-3-2.
Progressive Video Output Level Adjustment
<Purpose>
This adjusts progressive video output level. If it is incorrect, correct
brightness will not be attained when connected to, for instance,
projector.
This adjusts progressive video output level. 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
Check point
COMPONENT VIDEO OUT (Y)
connector (J102) (75
Ω terminated)
Instrument
Oscilloscope
Adjusting element
RV500
Specification
1.0
+
–
–
0
0
0
.
.
.
0
0
0
4
2
2
Vp-p
Adjusting method:
1) In the Test Mode Menu, select the “6. Video Level Adjustment”
so that color bars are generated.
2) Adjust the RV500 to attain 1.0
+
–
0
0
0
.
.
.
0
0
0
4
2
2
Vp-p.
Fig. 6-2
1.0
+0.04
Vp-p
–0.02
A
6-3-4.
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 to dark or light.
This checks whether the S-C satisfies the NTSC standard. If it is
not correct, the colors will be to dark or light.
Mode
Video level adjustment in test mode
Signal
Color bars
Check point
S VIDEO OUT (S-C) connector (J101)
(75
Ω terminated)
Instrument
Oscilloscope
Specification
A = 286
± 30 mVp-p (NTSC)
Checking method:
1) In the Test Mode Menu, select the “6. Video Level Adjustment”
so that color bars are generated.
2) Confirm that the S-C burst is “A”.
Fig. 6-4
35
DVP-CX995V
700
±
50 mVp-p
CN301
1
14
JL373
JL372
JL372
JL378
JL376
JL381
JL382
RV501
Video Level Adjustment
RV500
Progressive Video
Output Level Adjustment
JL383
– AV Board (Conductor Side) –
Adjustment Location:
6-3-6.
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.
This checks component video output B-Y. If it is incorrect, correct
colors will not be displayed when connected to, for instance,
projector.
Mode
Video level adjustment in test mode
Signal
Color bars
Check point
COMPONENT VIDEO OUT (P
B
/C
B
)
connector (J102) (75
Ω terminated)
Instrument
Oscilloscope
Specification
700
± 50 mVp-p
Checking method:
1) In the Test Mode Menu, select the “6. Video Level Adjustment”
so that color bars are generated.
2) Confirm that the B-Y level is 700
± 50 mVp-p.
Fig. 6-6
6-3-7.
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.
This checks component video output R-Y. If it is incorrect, correct
colors will not be displayed when connected to, for instance,
projector.
Mode
Video level adjustment in test mode
Signal
Color bars
Check point
COMPONENT VIDEO OUT (P
R
/C
R
)
connector (J102) (75
Ω terminated)
Instrument
Oscilloscope
Specification
700
± 50 mVp-p
Checking method:
1) In the Test Mode Menu, select the “6. Video Level Adjustment”
so that color bars are generated.
2) Confirm that the R-Y level is 700
± 50 mVp-p.
Fig. 6-7
700
±
50 mVp-p
36
DVP-CX995V
6-4. DISC DETECT SENSOR ADJUSTMENT
Be sure to perform this adjustment after sensor adjustment in
MECHANICAL ADJUSTMENT. (See page 32)
MECHANICAL ADJUSTMENT. (See page 32)
Connection:
Waveform:
1. Connect the oscilloscope to pins 1, 2 and 3 of CN301 on
the MB board.
2. Check that no discs are loaded in the unit.
3. Perform from step 1 to step 5 in Pop Up Mechanism
3. Perform from step 1 to step 5 in Pop Up Mechanism
Adjustment. (See page 32)
4. Press the [PAUSE] key, then the table starts to rotate in the
clockwise direction.
5. Turn the RV301 on MB board and adjust so that the H portion
A of DSENS_OUT waveform is twice the width of the H
portion B of HH_OUT waveform.
portion B of HH_OUT waveform.
Adjustment Location: MB board
6. Loosen the fixing screw, move the mounting board (SENSOR),
and secure the mounting board (SENSOR) at the point the H
portion of the HH_OUT waveform comes the center of the H
portion of the DSENS_OUT waveform.
portion of the HH_OUT waveform comes the center of the H
portion of the DSENS_OUT waveform.
DSENS_OUT
HH_OUT
CH1
CH2
DSENS_OUT
HH_OUT
CH1
CH2
A
A = 2
×
B
B
S tight, screw
(PTTWH3
(PTTWH3
×
6)
D. SENS OUT board
DSENS_OUT
HH_OUT
CH1
CH2
Should be at the center
DSENS_OUT: Pin
3
GND: Pin
2
HH_OUT: Pin
1
oscilloscope
CH1 CH2
DSENS_OUT
GND
HH_OUT
GND
HH_OUT
MB board
CN301
Click on the first or last page to see other DVP-CX995V service manuals if exist.