Technics SL-EH60 - Troubleshooting Guide

SL-EH60 |
M@ Troubleshooting Guide
No CD playback
Does
the test disc
rotate?
NO
Remove the test disc
Check
if TOC reading is
performed
Turn
on
OPEN/CLOSE
switch (S615)
Does
Do , : NO
playing time No access optical pickup
appear on the move?
display?
Playing
time
appear
Below
ips
es
Check
Optical
pickup
moves
or no outpu ;
on
the
display
oe
output
at
TU701
toward
inner
track
once,
(RF) and then toward outer
At about 1.0 Vp-p
Are there
outputs at pins @,
@ and ® of
(C702?
NG
raat Does
Berk
ae
eee
lens
make
vertical
ye
@
LRCK
OK
ave
movement?
@ SRDATA
Is pin
© of CN702 at
Are there
outputs at pins
@ and 69 of
CN702?
OK
Is there
an output at pin
@ of IC702?
(CLVS)
Does
laser diode
come on?
NO
No signal ay ne
1C702 failure Load the test disc
1C702 failure Check the unit 1C702 failure R726 failure
Turn on OPEN/CLOSE
switch (S615)
Remains
Changes from
“ H “ to " L a
No waveform or upper
es and lower amplitudes ce
are not equal. Remains
a pin @ of IC701 at"H" Check
pin 4 of IC702
(/FLOCK)
Upper and lower ws f
5
F
amplitudes
of
anges
from
deh
is
waveform
are
equal.
“H"to"h
C70 telre 1C702 failure 1C703 failure
~32-
track slightly (2 or 3 mm).