Kenwood DVF-3400-B, Руководство по обслуживанию

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9
D
VF-3400
TR
OUBLESHOO
TING
NO NO
YES
Check the connection line
of DRVSB signal.
NO
YES
Check the related
circuit of Sled_s.
NO
YES
Check the amp circuit on
motor driver.
Check the cable connection
with MECHA.
Do not put in disc and
tray close.
YES
YES
Check cable connect on
with pick-up head.
YES
YES
Motor
Driver DRVSB Pin
is high?
Is sled_s
DC Level higher than
1.4V?
SL+ and
SL- output properly?
Does
the SLED move
to inner side when it is
at outter position?
NO NO Check focus_s connection
on ZR966 and motor dirver.
Proper
focus_s outputs to motor
driver?
NO
Check the amp circuit on
motor dirver.
Proper F+ &
F- outputs?
Optical Lens has
movements for searching
focus?
B
C
NO NO
YES
YES
Check the laser power circuit
on ZR966 and connecting to
power transistor.
Check cable connection
between transistor ouput
and pick-up head.
NO
Laser off
NO
NO
YES
Check the related circuit
on RF signal.
Check DVD_LD &
CD_LD signal
YES
YES
NO NO
YES
Check spindle_s related
circuit on ZR966.
SP+ & SP- output properly?
NO
YES
Check the spindle control
amp circuit of motor driver.
Check the cable connection
between spindle and main
PCBA.
YES
YES
Laser
turns on when reading
disc?
DVD_LD,
CD_LD output properly?
NO
Check the related circuit on
laser power transistor
Collector
voltage of power transistor
is OK?
Put disc in?
Disc ID is correct?
Does spindle rotate? Does spindle rotate?
Proper spindle_s
signal on ZR966
Proper RF signal
on OPU
C
D