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mI TROUBLESHOOTING GUIDE
;
@). Microprocessor Circuit
IC-601
4N152611)
=
STOP
OPERATION
IC-401 OAN1SS4PEP)
[S DISC TRAY IN CLOSED
——>
| ©. Microprocessor C
ITION?
IC-601
O4N152611
IC-401
OMN15S4PEP)
. Loading Motor Drive
—-6FBRC8S)
ircuit
)
MODE
aa|
18
eVEBlclele
i
HIE
e
DISC TRAY OPEN/CLOSE OPERATION
0402 (2881240)
@).Close Switch (SSPDI7)
:
:
:
:
=
TION
DOES OPTICAL PICK-UP MOVE
PLAY
TORED THE INR: CIRCE
MODE
Q181 (2SD166
Q182 (2881240)
Traverse Coil (SORD38-)
Speed Position Sensor
(:WS7L0A00053)
Yes
|).
DSL DATA SLICD
—[
SPINDLE MOTOR ROTATION MODE
OPERATION » MODE
+
FOCUS LEAD-IN OPERATION
—[~
FO OCUS) LOOP SERVO OPERATION
PLL. (PHASE LOOP)
@
OPERATION
MODE
anes
CTRACKING)
SERVO OPERATION
.
era
a a
Gee
=
GLY CIT MOD
@] Toc READ OPERATION ~ PLAY OPERATION
OPERATION MODE
—[-
TRV CIRAVERSED SERVO OPERATION
OBSERVATION POINTS
CLV (FINE SERVO)
OPERATION - MODE
=
DSL (ATA SLICE) OPERATION
;
— | DATA DEMODULATION
STOP KEY OPERATION
oe
PLL (PHASE LOOP LOCK) OPERATION
. Tray Open Switch
|
CLY
(ilT
MODE) = OPERATION
i
——>
=HOW TO CHECK LASER DIODE=
Close the disc tray without
disc, Then laser diode will
illuminate
for 5 sec.
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