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 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+3.3V (pin-
qa
),
EVER+11V (pin-
qd
) voltage at CN201 of the power
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
) 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
defective 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 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-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.
3-1. Check CN201 voltage of the power supply block when
The power supply block is defective,
or the IF-92 board is defective, or MB-103 board is defective
The signal line has defective soldering,
or is short-circuited with other signal lines, or parts are 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-circuited
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
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;
) 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.
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-92
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.
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.
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TEL 13942296513 QQ 376315150 892498299
