31
CT-IS21
7. GENERAL INFORMATION
7.1 DIAGNOSIS
7.1.1 POWER ON SEQUENCE
• STANDBY/ON key is pressed.
• Receive the system power on
information with the sytem bus.
Go to Power ON
Note : Pin No. shows the Pin No. of
µ
-COM PDC059A.
Tray close
200mS WAIT
SOL 50mS ON
MOTOR ON
MOTOR ON
150mS WAIT
300mS WAIT
500mS WAIT
ERROR
MOTOR OFF
END
Is Tray open ?
Is MODE SW
OFF ?
Is it fifth
times ?
Is it second
times ?
Is MODE SW
OFF ?
Is MODE SW
OFF ?
Yes
Yes
Yes
Yes
Yes
:ERROR
(port Pin 3 )
(port Pin 3 )
(port Pin 2 )
Check the mecha. switch (port Pin 40 and Pin 41 )
CLOSE Pin 40
=
H , Pin 41
=
L
OPEN
Pin 40
=
L ,
Pin 41
=
H
Check that the mecha. is stop
condition (port Pin 17
=
L)
Initialize end
Deck motor off
(port Pin 3
=
L)
Close it if the tray is opened (port Pin 1 and Pin 47 )
CLOSE Pin 1
=
L ,
Pin 47
=
H
OPEN
Pin 1
=
H , Pin 47
=
L
Yes
:Give up
No
No
No
No
No
No
Perform the mechanism initializa-
tion every time it power on.
(When the AC outlet is pulled out
while raising up the Head Base or
the gear comes off, perform the
initialization every time because the
normal movement can't be done.)
