Sony DVP-K370 Service Manual ▷ View online
6-20E
6-11-4. The product itself is defective.
•
If MB-103 board does not have any problem,
The board other than MB-103 board is defective or connec-
tion is defective or optical pickup block is defective or mecha-
nism deck is defective
tion is defective or optical pickup block is defective or mecha-
nism deck is defective
1. Power LED does not light in Red when the AC power
is turned on.
Check the EVER –13V (pin-3), EVER+3.3V (pin-qa),
EVER+11V (pin-qd) voltage of the power supply block
CN201.
If voltage is abnormal.
EVER+11V (pin-qd) voltage of the power supply block
CN201.
If voltage is abnormal.
t The power supply block is defec-
tive.
2. Power LED does not light in green after transmitting
the POWER on command. It remains lighting in red (in
the STANDBY mode).
the STANDBY mode).
2-1. Check the EVER -13V (pin-3), EVER+3.3V (pin-qa),
EVER+11V (pin-qd) voltage at CN201 of the power
supply block/
supply block/
If voltage is abnormal.
t The power supply block is defec-
tive.
2-2. Check if the fuse on the IF board has blown of not.
If the fuse has blown
t Replace the fuse.
2-3. Check the P-CONT (pin-2) at CN401 of the IF-92
board when the POWER button is pressed.
If it remains at “L”,
t The signal line has the defective soldering or it is short-
circuited with other signal lines or capacitor or resistor is de-
fective or IFCON is defective or connection between the power
supply block and the IF-92 board is defective, or connector
installation is defective, or the power supply block is defec-
tive.
t The signal line has the defective soldering or it is short-
circuited with other signal lines or capacitor or resistor is de-
fective or IFCON is defective or connection between the power
supply block and the IF-92 board is defective, or connector
installation is defective, or the power supply block is defec-
tive.
2-4. Check if the button is kept depressed in the IFCON
self mode.
If the button is kept depressed.
t The front panel is defec-
tive, or IF-92 board is defective.
2-5. Check PONCHK (pin-e;) of IFCON (IC404) on the IF-
92 board.
If it is 0.5 V or more.
t The power supply is defective, or IF-
92 board is defective.
3. Power LED becomes red (STANDBY mode) in at once
through Power LED lights in Green once when the
POWER button is pressed.
POWER button is pressed.
3-1. Check CN201 voltage of the power supply block
when the LED lights in green.
If voltage is abnormal.
t The power supply block is defec-
tive, or the IF-92 board is defective, or MB-103 board is de-
fective
fective
3-2. Check XFRRST (pin-8) at CN101 on the MB-103
board.
If it is fixed to “L”.
t The signal line has defective solder-
ing, or is short-circuited with other signal lines, or parts are
defective.
defective.
3-3. Check IFBSY (pin-5), XIFCS (pin-6), SI0 (pin-4),
SO0 (pin-1) and SC0 (pin-3) at CN101
If they are fixed to “H” or “L”.
t The signal line has defective soldering, or is short-cir-
cuited with other signal line, or parts are defective, or
SYSCON (IC104) is defective
If they change between “L/H”.
Connector installation is defective, or the IF-92 board is de-
fective, or SYSCON (IC104) is defective.
If they stay in the center voltage.
Poor connection of flexible wiring board such as it is inserted
in an angle diagonally, or defective soldering, or is short-cir-
cuited with other signal line.
t The signal line has defective soldering, or is short-cir-
cuited with other signal line, or parts are defective, or
SYSCON (IC104) is defective
If they change between “L/H”.
Connector installation is defective, or the IF-92 board is de-
fective, or SYSCON (IC104) is defective.
If they stay in the center voltage.
Poor connection of flexible wiring board such as it is inserted
in an angle diagonally, or defective soldering, or is short-cir-
cuited with other signal line.
3-4. Check PONCHK (pin-e;) of IFCON (IC404) on the
IF-92 board.
If rise-up time from 0.5 V to 1.5 V or more takes longer time,
or it does not exceed 1.5 V or more.
or it does not exceed 1.5 V or more.
t The IF board is defec-
tive.
4. The LED lights in green but the FL display does not
light when the POWER button is pressed.
Connection between the power supply block and the IF-92
board is defective, or connector installation is defective, or
the IF-92 board is defective.
board is defective, or connector installation is defective, or
the IF-92 board is defective.
5. Both picture and audio are not output.
Connection between the power supply block and the IF-92
board is defective, or connection between the IF-92 board and
the AV-63 board is defective, or connection between the AV-
63 board and the MB-103 board is defective, or connector
installation is defective, or AV-63 board is defective.
board is defective, or connection between the IF-92 board and
the AV-63 board is defective, or connection between the AV-
63 board and the MB-103 board is defective, or connector
installation is defective, or AV-63 board is defective.
6. Picture is not normal. (Block noise or others appear.)
The MB-103 board AVD (IC403) or SDRAM (IC404, IC405)
is defective, or ARP & SERVO (IC301) is defective.
is defective, or ARP & SERVO (IC301) is defective.
7-1
DVP-K370
SECTION 7
ELECTRICAL ADJUSTMENT
7-1. POWER SUPPLY CHECK
1.
HS11S1U/HS11S1F/ETXNY381N2F Boards
Mode
E-E
Instrument
Digital voltmeter
EVER +3.3 V Check
Test point
CN201 pin qa
Specification
3.5 ± 0.2 Vdc
SW +3.3 V Check
Test point
CN201 pin 8
Specification
3.3 ± 0.2 Vdc
+5 V Check
Test point
CN201 pin qs
Specification
5.0 ± 0.3 Vdc
SW +11 V Check
Test point
CN201 pin 6, 7
Specification
11.0 ± 1.0 Vdc
EVER +11 V Check
Test point
CN201 pin qd
Specification
11.0 ± 1.0 Vdc
EVER –13 V Check
Test point
CN201 pin 3
Specification
–13.0 ± 1.0 Vdc
Checking method:
1)
1)
Confirm that each voltage satisfies the specification.
Note
Because the heatsink installed on the power supply board is a part of the
primary side, never touch it to avoid electrical shock.
Because the heatsink installed on the power supply board is a part of the
primary side, never touch it to avoid electrical shock.
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 diagnostic check, use
the monitor that supports both NTSC and PAL modes.
Use the reference disc for PAL for check, and use the reference disc
for NTSC for adjustment.
the monitor that supports both NTSC and PAL modes.
Use the reference disc for PAL for check, and use the reference 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)
1)
Color monitor TV
2)
Oscilloscope 1 or 2 phenomena, band width over 100 MHz,
with delay mode
with delay mode
3)
Frequency counter (over 8 digits)
4)
Digital voltmeter
5)
Standard commander (RMT-127E)
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-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)
7)
SACD reference disc
HLXA-509 (J-6090-090-A)
HLXA-509 (J-6090-090-A)
8)
Extention Cable (J-6090-107-A)
7-2
3.
Checking S Video Output S-C
<Purpose>
This checks whether the S-C satisfies the NTSC/PAL Standard. If
it is not correct, the colors will be too dark or light.
This checks whether the S-C satisfies the NTSC/PAL 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)
A = 300 ± 100 mVp-p (PAL)
A = 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 “A”.
Fig.7-3.
4. 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.
<Purpose>
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 ± 0.05 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 1.0 ± 0.05 Vp-p.
Fig.7-4.
7-2. ADJUSTMENT OF VIDEO SYSTEM
1.
Video Level Adjustment (MB-103 BOARD)
<Purpose>
This adjustment is made to satisfy the NTSC/PAL standard, and if
not adjusted correctly, the brightness will be too large or small.
This adjustment is made to satisfy the NTSC/PAL 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
RV401
Specification
1.0 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 Vp-p.
Fig.7-1.
2.
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
1.0 ± 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 1.0 ± 0.05 Vp-p.
Fig.7-2.
+0.04
–0.02
–0.02
+0.04
–0.02
–0.02
1.0 Vp-p
+0.04
–
0.02
A
1.0 ± 0.05 Vp-p
1.0 ± 0.05 Vp-p
7-3
5.
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
Test point
COMPONENT VIDEO OUT (P
B
)
connector (75
Ω terminated)
Instrument
Oscilloscope
Specification
700 ± 50 mVp-p
Checking method:
1)
1)
In the test mode initial menu “6” Video Level Adjustment, set
so that color bars are generated.
so that color bars are generated.
2)
Confirm that the B-Y level is 700 ± 50 mVp-p.
Fig.7-5.
700 ± 50 mVp-p
700 ± 50 mVp-p
6.
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
Test point
COMPONENT VIDEO OUT (P
R
)
connector (75
Ω terminated)
Instrument
Oscilloscope
Specification
700 ± 50 mVp-p
Checking method:
1)
1)
In the test mode initial menu “6” Video Level Adjustment, set
so that color bars are generated.
so that color bars are generated.
2)
Confirm that the R-Y level is 700 ± 50 mVp-p.
Fig.7-6.
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