JVC XV-N350B Service Manual page 17

ELECTRICAL TROUBLESHOOTING GUIDE
B
Does
the SLED move
to inner side when it is
at outter position?
YES
Do not put in disc and
tray close.
Optical Lens has
movements for searching
focus?
YES
C
Motor
NO
Driver DRVSB Pin
is high?
Is sled_s
DC Level higher than
1.4V?
SL+ and
SL- output properly?
Check the cable connection
with MECHA.
Proper
NO
focus_s outputs to motor
driver?
Proper F+ &
F- outputs?
Check cable connect on
with pick-up head.
3-6
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
Check the connection line
of DRVSB signal.
Check the related
circuit of Sled_s.
Check the amp circuit on
motor driver.
Check focus_s connection
on ZR966 and motor dirver.
Check the amp circuit on
motor dirver.