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. Note : Pin No. shows the Pin No. of µ-COM PDC059A.
Go to Power ON
No
Is Tray open ?
Check the mecha. switch (port Pin 40 and Pin 41 ) CLOSE Pin 40 = H , Pin 41 = L OPEN Pin 40 = L , Pin 41 = H
Yes Tray close Close it if the tray is opened (port Pin 1 and Pin 47 ) CLOSE Pin 1 = L , Pin 47 = H OPEN Perform the mechanism initialization 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.) Pin 1 = H , Pin 47 = L
200mS WAIT Check that the mecha. is stop condition (port Pin 17 = L)
Is MODE SW OFF ? No
Yes
MOTOR ON SOL 50mS ON (port Pin 2 ) 500mS WAIT MOTOR ON (port Pin 3 ) No 150mS WAIT Is MODE SW OFF ? Yes Is it fifth times ? No No Is MODE SW OFF ? Yes 300mS WAIT Yes :ERROR
