LG LH-CX640 Series Service Manual page 126

4-24
MECHANISM
TROUBLESHOOTING
GUIDE
Auto
Stop
operates.
(PLAY/CUE/REV)
Does the T/UP or the
supply
reel
pulse
occur?
Does
the
pinch
roller
attached
to
the
Capstan
shaft
turn
in
opera-
tion of
the
Play/Cue/Rev.
Replace
the
reel
sensor.
Is
output
of
the
DFG,
DPG
normal?
Check
the
assembly
mode.
Check
the
spring
pinch.
Replace
the
drum motor.
Check the
Servo, Syscon.
Check
the
Syscon,
\316\274-com.
No
cassette
loading
is
done.
Insert
the
cassette.
Check
the holder
assembly
CST.
Does
output
of
the
CST
IN
S/W
change?
(In
insertion
of the
REC
tape:
\"L\"_\"H\"_ \"L\
(In
insertion
of the
REC
preven-
tion
tape:
\"L\"_
\"H\"_
\"L\"_ \"H\
Is
the
CST
IN
S/W
normal?
Is
operation
of the
lever
assembly
S/W
normal?
Check
the
Syscon
circuit.
Check
the
Syscon
circuit.
Replace the
CST
IN
S/W.
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
YES
C.
D.