Sony DVP-NS999ES Service Manual page 108

The ARP & SERVO (IC301) analog circuit of MB-107 board is
defective or RF-Amp (IC201) or M-Driver (IC202) peripheral cir-
cuit is defective or optical pickup block is defective or flat cable
connection is defective
6-11-4. The product itself is defective.
• If MB-107 does not have any problem,
The board other than MB-107 board is defective or connec-
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 SW-8V (pin-3), EVER+3.3V (pin-4), EVER+5
(pin-8) 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).
2-1. Check the SW-8V (pin-3 ), EVER+3.3V (pin-4 ),
EVER+5 (pin-8) voltage at CN201 of the power sup-
ply block/
If voltage is abnormal. t The power supply block is defec-
tive.
2-2. Check if the fuse on the power block has blown
of not.
If the fuse has blown t Replace the fuse.
2-3. Check the P-CONT (pin-9) at CN201 of the FL-129
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-98 board is defective, or connection
between the IF-98 and the FL-129 board is defective, or con-
nector 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 defec-
tive, or FL-129 board is defective.
2-5. Check PONCHK (pin-e;) of IFCON (IC203) on the FL-
129 board.
If it is 0.5 V or more. t The power supply is defective, or
FL-129 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.
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 FL-129 board is defective, or MB-107 is defec-
tive.
3-2. Check XFRRST (pin-2) at CN103 on the MB-107
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.
3-3. Check IFBSY (pin-3), XIFCS (pin-4), SI0 (pin-5),
SO0 (pin-6) and SC0 (pin-7) at CN103
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 FL-129 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-cir-
cuited with other signal line.
3-4. Check PONCHK (pin-e;) of IFCON (IC203) on the
FL-129 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 FL board is de-
fective.
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-98
board is defective, or connector installation is defective, or
the FL-129 board is defective.
5. Both picture and audio are not output.
Connection between the power supply block and the IF-98
board is defective, or connection between the IF-98 board and
the AU-232/VP-58/EV-15 board is defective, or connection
between the AU-232/VP-58/EV-15 board and the MB-107
board is defective, or connector installation is defective, or
AU-232/VP-58/EV-15 board is defective.
6. Picture is not normal. (Block noise or others appear.)
The MB-107 board AVD (IC403) or SDRAM (IC406) is de-
fective, or ARP & SERVO (IC301) is defective.
6-22 E
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