Sony DVP-NC675P Service Manual page 79

6-7-4. The product itself is defective.
• If MV044 does not have any problem,
The board other than MV-044 board is defective or connection
is defective or optical pickup block is defective or mechanism
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. t The power supply block is defective.
2. Power LED does not light in green after transmitting
the POWER on command. It remains lighting in red (in
the STANDBY mode).
2-1. Check the EVER -13V (pin-3
EVER+11V (pin-qd qd) voltage at CN201 of the power
qd qd
qd
supply block/
If voltage is abnormal. t The power supply block is defective.
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
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
defective or IFCON is defective or connection between the
power supply block and the IF-114 board is defective, or
connector installation is defective, or the power supply block is
defective.
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 defective,
or IF-114 board is defective.
2-5. Check PONCHK (pin-e;
114 board.
If it is 0.5 V or more. t The power supply is defective, or
IF-114 board is defective.
3 3 ), EVER+3.3V (pin-qa
3 3
2 2 ) at CN401 of the IF-114
2 2
e;) of IFCON (IC404) on the IF-
e; e; e;
3. Power LED becomes red (STANDBY mode) in at once
through Power LED lights in Green once when the
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 defective,
or the IF-114 board is defective, or MV044 is defective
3-2. Check XFRRST (pin-8
board.
If it is fixed to "L". t The signal line has defective soldering,
or is short-circuited with other signal lines, or parts are defective.
3-3. Check IFBSY (pin-5
SO0 (pin-1 1 1 ) and SC0 (pin-3
1 1
If they are fixed to "H" or "L".
t The signal line has defective soldering, or is short-circuited
qa), qa qa
qa
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-114 board is
defective, 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-
circuited with other signal line.
3-4. Check PONCHK (pin-e;
114 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. t The IF board is defective.
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-114
board is defective, or connector installation is defective, or the
IF-114 board is defective.
5. Both picture and audio are not output.
Connection between the power supply block and the IF-114
board is defective, or connection between the IF-114 board is
defective, or connection between the MV-044 board is defective,
or connector installation is defective.
6. Picture is not normal. (Block noise or others appear.)
The MV-044 board AVD (IC403) or SDRAM (IC404, IC405)
is defective, or ARP & SERVO (IC301) is defective.
6-12
8 8 ) at CN101 on the MV-044
8 8
5 5 ), XIFCS (pin-6 6 6 ), SI0 (pin-4
5 5 6 6
3 3 ) at CN101
3 3
e;) of IFCON (IC404) on the IF-
e; e; e;
4 4 ),
4 4