Technics SL-EH760 - Page 34

FL
error
code /
display
Symptom Probable cause Signal to check Normal voltage
waveform
values
Signal
name
Location PLAY
STOP
E01 Focus and
tracking
offset
adjustments
not
completed in
the specified
time period.
Clocks X1 IN and X2 OUT,
power supply V
DD
and reset/
RST, all on IC702.
MDATA, MCLK, MLD and SENSE
signals to/from mechanism
controller.
MDATA IC702-8 pin 0V
MCLK IC702-7 pin
3.4
MLD IC702-9 pin
3.4
SENSE IC702-10
pin
-
/RST IC702-18
pin
3.4 V
3.4
X1 IN IC702-58
pin
X2 OUT IC702-59
pin
E03,
E05,
E07,
E09,
E0B,
E0D,
E0F
Disc play
unstable.
Scratches or contaminants on
disc surface.
Focus and Tracking servo
circuit (check waveforms,
voltages and part values.)
Spindle driver circuit.
Optical pickup.
FE IC702-32
pin
1.7
TE IC702-33
pin
1.7
FOD IC702-28
pin
1.7 V
1.7
TRD IC702-27
pin
1.7 V
1.7
KICK IC702-26
pin
-
/FLOCK IC702-11
pin
-
/RFDET IC702-38
pin
0 V
3.3
RF TJ701
1.0
STAT IC702-17
pin
3.3 V
34