6-21
6-21 E
6-11-3. Drive Auto Adjustment stops due to error.
The ARP & SERVO (IC301) analog circuit of MB-108 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-108 does not have any problem,
The board other than MB-108 board is defective or connec-
tion is defective or optical pickup block is defective or mecha-
nism deck is defective
1. FL display does not light when the POWER button is
pressed.
1-1. Check the EVER -15.5V (pin-
2
), EVER+5.0V (pin-
qa
), EVER+11V (pin-
qd
) voltage at CN201 of the
power supply block
If voltage is abnormal.
t
The power supply block is defec-
tive.
1-2. Check if the fuse on the AF-98 board has blown of
not.
If the fuse has blown
t
Replace the fuse.
1-3. Check the P.CONT (pin-
9
) at CN471 of the AF-98
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 AF-98 board is defective, or connector
installation is defective, or the power supply block is defec-
tive.
1-4. 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 AF-98 board is defective.
1-5. Check PONCHK (pin-
e;
) of IFCON (IC404) on the AF-
98 board.
If it is 0.5 V or more.
t
The power supply is defective, or
AF-98 board is defective.
1-6. Check ND401 (pin-
1
& pin-
ek
) on the AF-98 board.
If no voltage supply
t
Voltage driver (IC407) defective, or
the AF-98 board is defective.
2. FL display light once and becomes not light when
POWER button is pressed.
2-1. Check CN201 voltage of the power supply block
when the FL display light on.
If voltage is abnormal.
t
The power supply block is defec-
tive, or the AF-98 board is defective, or MB-108 board is de-
fective
2-2. Check XFRRST (pin-
8
) at CN101 on the MB-108
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.
2-3. Check XIFBSY (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 AF-98 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.
2-4. Check PONCHK (pin-
e;
) of IFCON (IC404) on the
AF-98 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 AF-98 board is
defective.
3. Both picture and audio are not output.
Connection between the power supply block and the AF-98
board is defective, or connection between the AF-98 board
and the MB-108 board is defective, or connector installation
is defective, or AF-98 board is defective.
4. Picture is not normal. (Block noise or others appear.)
The MB-108 board AVD (IC403) or SDRAM (IC404, IC405)
is defective, or ARP & SERVO (IC301) is defective.
