LG BPM55 Service Manual page 72

LD CHECK GUIDE
...................................................................................................................................... 4-2
1. PURPOSE ................................................................................................................................................. 4-2
2. LD CHECK PROCEDURE ........................................................................................................................ 4-2
HOW TO USE THE SA RESET FUNCTION
1. PURPOSE ................................................................................................................................................. 4-3
2. REQUIRED SA RESET. ........................................................................................................................... 4-3
3. SA RESET PROCEDURE ........................................................................................................................ 4-3
MAJOR IC INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTION
1. MT8553/ MT8563 PIN DESCRIPTION ..................................................................................................... 4-5
2. IC701 (TPIC2050): 9CH MOTOR DRIVE WITH 3 BEAM LASER DIODE DRIVER ................................ 4-8
3. PICK-UP CONNECTOR TERMINAL PIN ASSIGNMENTS .................................................................... 4-10
BLOCK DIAGRAM
.................................................................................................................................... 4-11
SECTION 4
MT8553/ MT8563
FRONT-END LOADER PART
CONTENTS
....................................................................................... 4-3
4-1
...................................... 4-5