Sony DVP-S350 Service Manual ▷ View online
6-18
6-18 E
3. TROUBLESHOOTING
3-1. Test Mode is not activated
With the set assembled in the front panel, the Test mode does not
become active if any button was pressed by any reason.Under this
condition, the power is not turned on even in the normal status.
(The set is kept in Standby status = Red LED is kept on) Not only
the buttons are inactive, but also a signal from remote commander
is not accepted. To check this condition, with the self check port
(pin 8 of IF CON) kept in “Low” status, supply the AC power, so
that the Test mode is forcibly activated. On the board, short the
lands where SELF is printed. The IF CON checks the self check
port only after the power on reset (only when AC is supplied; not
in Standby status). If any button was pressed, the button name
should be displayed on the FL display tube. Though no button is
pressed this time, display of other than NOTHING implies that
the button was pressed.
become active if any button was pressed by any reason.Under this
condition, the power is not turned on even in the normal status.
(The set is kept in Standby status = Red LED is kept on) Not only
the buttons are inactive, but also a signal from remote commander
is not accepted. To check this condition, with the self check port
(pin 8 of IF CON) kept in “Low” status, supply the AC power, so
that the Test mode is forcibly activated. On the board, short the
lands where SELF is printed. The IF CON checks the self check
port only after the power on reset (only when AC is supplied; not
in Standby status). If any button was pressed, the button name
should be displayed on the FL display tube. Though no button is
pressed this time, display of other than NOTHING implies that
the button was pressed.
3-2. Power is not turned on
1 Red (STANDBY) LED does not light up when AC was sup-
plied. The power (EVER 3.3 V) is not supplied.
X401 is oscillating.
X401 is oscillating.
2 Red (STANDBY) LED is kept on though POWER button was
pressed. Any button is kept pressed.
PONCHK (IF CON pin 6) is over 0.1 V.
PONCHK (IF CON pin 6) is over 0.1 V.
3 Green LED lights up when POWER button was pressed, but
red LED lights up again after several seconds. PONCHK (IF
CON pin 6) is abnormal. (Slow rise time from 0.1 V to 1.5 V.
Voltage must be less than 1.5 V)
SYSTEM CONTROL does not operate normally.
CON pin 6) is abnormal. (Slow rise time from 0.1 V to 1.5 V.
Voltage must be less than 1.5 V)
SYSTEM CONTROL does not operate normally.
3-3. Power is turned on and off repeatedly
EVER 3.3 V may not be supplied normaly. Check that D430 is not
broken.
broken.
7-1
7-1. POWER SUPPLY ADJUSTMENT
1. Power Supply Check (HS16S9U BOARD)
Mode
E-E
Instrument
Digital voltmeter
EVER +3 V Check
Test point
CN201 pin 1
Specification
3.6 ± 0.2 Vdc
SW +3 V Check
Test point
CN201 pin 2, 3
Specification
3.4 ± 0.2 Vdc
EVER+5 V Check
Test point
CN201 pin 4
Specification
5.3 ± 0.3 Vdc
SW +10 V Check
Test point
CN201 pin 7, 8
Specification
10.5 Vdc
SW –10 V Check
Test point
CN201 pin qa
Specification
–10.0 Vdc
Checking method:
1) Confirm that each voltage satisfies the specification.
1) Confirm that each voltage satisfies the specification.
SECTION 7
ELECTRICAL ADJUSTMENT
DVP-S350
In making adjustment, refer to 7-3. 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 (RMT-D116A)
6) DVD reference disc
4) Digital voltmeter
5) Standard commander (RMT-D116A)
6) DVD reference disc
HLX-501 (J-6090-071-A) (dual layer)
HLX-503 (J-6090-069-A) (single layer)
HLX-504 (J-6090-088-A) (single layer)
HLX-505 (J-6090-089-A) (dual layer)
HLX-503 (J-6090-069-A) (single layer)
HLX-504 (J-6090-088-A) (single layer)
HLX-505 (J-6090-089-A) (dual layer)
7) SACD reference disc
HLXA-509 (J-6090-090-A)
8) Extension cable (J-6090-100-A)
MB-86 BOARD (CN501) y AI-17 BOARD (CN101)
MB-86 BOARD (CN701) y AI-17 BOARD (CN201)
MB-86 BOARD (CN701) y AI-17 BOARD (CN201)
+1.0
–1.5
–1.5
+1.5
–1.0
–1.0
7-2
3. Checking Component Video Output B-Y
(MB-86 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 level adjustment in test mode
Signal
Color bars
Test point
COMPONENT VIDEO OUT (B-Y)
connector (75
connector (75
Ω
terminated)
Instrument
Oscilloscope
Specification
700 ± 70 mVp-p
Checking method:
1) Confirm that the B-Y level is 700 ± 70 mVp-p.
1) Confirm that the B-Y level is 700 ± 70 mVp-p.
Figure 7-3
4. Checking Component Video Output R-Y
(MB-86 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 level adjustment in test mode
Signal
Color bars
Test point
COMPONENT VIDEO OUT (R-Y)
connector (75
connector (75
Ω
terminated)
Instrument
Oscilloscope
Specification
700 ± 70 mVp-p
Checking method:
1) Confirm that the R-Y level is 700 ± 70 mVp-p.
1) Confirm that the R-Y level is 700 ± 70 mVp-p.
Figure 7-4
7-2. ADJUSTMENT OF VIDEO SYSTEM
1. Video Level Adjustment (MB-86 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
LINE OUT (VIDEO) connector
(75
(75
Ω
terminated)
Instrument
Oscilloscope
Adjusting element
RV501
Specification
1.0 ± 0.02 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 RV501 to attain 1.0 ± 0.02 Vp-p.
Figure 7-1
2. S-terminal Output Check (MB-86 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 level adjustment in test mode
Signal
Color bars
Test point
S VIDEO OUT (S-Y) connector
(75
(75
Ω
terminated)
Instrument
Oscilloscope
Specification
1.0 ± 0.1 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 1.0 ± 0.1 Vp-p.
Figure 7-2
700 ± 70 mVp-p
700 ± 70 mVp-p
1.0 ± 0.02 Vp-p
1.0 ± 0.1 Vp-p
RV501
VIDEO LEVEL ADJ
33
1
34
2
13
1
CN201
CN501
7-3
7-4 E
5. Checking Component Video Output Y
(MB-86 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 level adjustment in test mode
Signal
Color bars
Test point
COMPONENT VIDEO OUT (Y)
connector (75
connector (75
Ω
terminated)
Instrument
Oscilloscope
Specification
1.0 ± 0.1 Vp-p
Checking method:
1) Confirm that the Y level is 1.0 ± 0.1 Vp-p.
1) Confirm that the Y level is 1.0 ± 0.1 Vp-p.
Figure 7-5
6. Checking S Video Output S-C (MB-86 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 level adjustment in test mode
Signal
Color bars
Test point
S VIDEO OUT (S-C) connector
(75
(75
Ω
terminated)
Instrument
Oscilloscope
Specification
286 ± 50 mVp-p (NTSC)
300 ± 100 mVp-p (PAL)
300 ± 100 mVp-p (PAL)
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 300 ± 100 mVp-p.
Figure 7-9
1.0 ± 0.1 Vp-p
7-3. ADJUSTMENT RELATED PARTS ARRANGEMENT
MB-86 BOARD (SIDE A)
HS16S9U BOARD (SIDE A)
MB-86 BOARD (SIDE B)
300 ± 100 mVp-p
Click on the first or last page to see other DVP-S350 service manuals if exist.