H3 (Erase Only): DIP SW 2 3 4 at ON position, DIP SW 1 at OFF position--
L3 (Erase Only): DIP SW 2 3 at ON position, DIP SW 1 4 at OFF position---
This function for RW Media with Data inside, operation steps same as H3, Erase speed drop to 4x only.
3-1. Turn Rock Switch to 
position (CD Duplicator). LED will show version number.
Power-On:display firmware version number. (Buzzer 0.5s X1) ex: 
3-2. Than LED display showing: from 00,11, 22, 33, ......88, 99
3-3. Duplicator will chk itself & get ready.
Self-Test:Only one segment is running and display "rd" (ready)
3-4. SmartDup ready, please insert your CD title into your CD-RW Media in CD-RW Writer.
Count Down: After drives & discs ready in current mode, wait for 5 seconds. (Buzzer 0.2s X1)
3-5. LED Display showing final counts down, than LED showing H3 or L3.
3-6. Start Erasing.
Erasing:
3-7. After Erased success, Buzzer will Beep & eject CD-RW media. LED showing 00.
OK: After Self-Test or Test or Erase or Copy. (Buzzer 1sX2)
3-7-1. If fail, LED will showing: Er & eject CD-R Media, Buzzer will Beep also.
FAIL: After Self-Test or Test or Erase or Copy or Upgrade. (Buzzer 0.2X3)
