60
DV-444, DV-440
7.1.4 TROUBLE SHOOTING
• No Power ON
• FL is not turned ON
• FL indication is unusual
START
Is FL turn on ?
Is tray open ?
Is the indication
of FL normal ?
Do the video and
sound come on ?
Power ON
Yes
Yes
Yes
Yes
No
No
No
Turn on the power again
after 2 - 3 minutes.
• Blow out fuse of the primary side
• Blow out micro-fuse on the POWER SUPPLY Unit. (Check the each voltage.)
(P101 and P102)
• FL controller IC (IC101) on the FLKB Assy is damaged.
• Blow out micro-fuse on the POWER SUPPLY Unit.
(P101 and P102)
FL indication is dark or flickers.
No
Indicates the error message
Refer to the section "7.1.5 ERROR CODE".
Refer to the section "7.1.5 ERROR CODE".
Check the connection between JACB Assy and DVDM Assy.
Indicate the error message.
• Check the following connections :
POWER SUPPLY Unit - DVDM Assy
DVDM Assy - JACB Assy
JACB Assy - FLKB Assy
• Check each voltage (EV+5V, SW+5V, SW+3.3V, +6V and +12V)
(If above voltage are not supplied, check the micro-fuse P101 and P102.)
• Check the following connections :
DVDM Assy - LOAB Assy (5P connector assy)
DVDM Assy - SSIB Assy (INSIDE SW signal)
• Check the +6V and +12V power supply voltage
(If above voltage is not supplied, check the micro-fuse P101 and P102.)
Spindle
does not turn.
Carriage does
not move.
Yes
Laser diode
does not light.
Focus does
not in.
Yes
No
• Check the following connections :
DVDM Assy - SSIB Assy (17P flexible cable)
SSIB Assy - Spindle motor (12P flexible cable)
SSIB Assy - Stepping motor (4P flexible cable)
• Check the +6V and +12V power supply voltage
(If above voltage is not supplied, check the micro-fuse P101 and P102.)
No
• Check the following connection :
DVDM Assy - Pickup Assy (26P flexible cable)
• Check the +6V and +12V power supply voltage and SW+5V
(If +6V voltage is not supplied, check the micro-fuse P101 and P102.)
• Check it whether the pickup is defectiveness.
Perform the section "7.1.1 Self-Diagnostic Function of Pickup Defective"
and check the LD current value.
• Short or open the zenner diode
on the POWER SUPPLY Unit.
(D304)
• Check the values of R153 - R155
on the FLKB Assy.
OK