Samsung SC-148B Service Manual page 18

A
Check after SET assembly
Input Voltage of IC201 9pin, 21pin 3.6V ?
Y
Pick up moves in at power on after moving
out ?
Y
Tray in / out ?
Y
Laser diode on ?
Y
Laser diode on ?
Y
Disk insert
Focuse up / down ?
Y
Disc rotates ?
Y
Spindle lock ?
Y
Pause state
Pause state : LED off as disc rotation state and continue 1 track jump
N
Refer to Tray open / close
N
Refer to No laser diode on
N
Refer to No focus lock
N
N
Refer to No disc rotation
19
1TRACK JUMP TE