Technics SL-P202A - Page 45

SL-P202A
(Operation Sequence Just After Power On) (TOC Read Operation-PLAY Operation)
Power On Open/Close switch
(no disc loaded) pressed.
@ Microprocessor failure
(1C401, 601)
@ Power supply failure:
¢ Voltage regulator (1C11,
13, 104, Q11, 12, 13)
IC protector (ICP11)
@ Microprocessor failure:
© 10601, 401
Has the tray opened
and stopped?
@ Operation key switch failure
@ Tray switch failure
FL display came on?
Yes
Load a disc and press
the Open/Close switch.
@ Microprocessor failure
(1C401)
@ Operation key switch failure
@ Tray switch failure
Has the tray closed
and stopped?
Yes
@ Microprocessor failure:
© 1C401, 601
@ Loading motor driver failure:
* 0431 ,432.1C402,motor
@ Tray switch failure
Tray closed?
@ Pickup failure:
¢ Laser diode
No! @ Control system failure:
e 1C6501, Q6502
@) Microprocessor failure:
Laser diode came on?
°1C401
— Laser diode turn-on check method —
Remove the disc then close the tray,
and the laser diode will come on for
approx. 5 sec.
Yes
@ Radial control system
failure:
e1C6504, Radial motor
¢ 1C401,403, potentiometer
Does optical
pickup move toward
inner track?
(D) Microprocessor failure:
¢1C401
2 Control system failure:
¢1C6501
@) FO error amp. failure:
¢ 1C6501, 1IC6504
@ Pickup failure:
¢ Focus coil
Does focus lens
make vertical
movements?
Yes
Stops after making focus pull-
in operation for approx. 5 sec. @ Microprocessor failure:
© 1C401
@T.T. drive system failure:
10301, 402, Q351
¢ 0352,353
Spindle motor
Spindle motor
started rotation?
Yes (A)
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