LG BH4120SN Service Manual page 90

ONE POINT REPAIR GUIDE
1. "ALL BD DISC" READING ERROR .......................................................................................................... 4-2
2. "ALL DVD DISC" READING ERROR........................................................................................................ 4-3
3. "ALL CD DISC" READING ERROR .......................................................................................................... 4-4
HOW TO USE THE SA RESET FUNCTION
1. PURPOSE ................................................................................................................................................. 4-5
2. REQUIRED SA RESET. ........................................................................................................................... 4-5
3. SA RESET PROCEDURE ........................................................................................................................ 4-5
MAJOR IC INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTION
1. IC501 (MT8560) ........................................................................................................................................ 4-7
2. IC701 (TPIC2050): 9CH MOTOR DRIVE WITH 3 BEAM LASER DIODE DRIVER .............................. 4-10
3. PICK-UP CONNECTOR TERMINAL PIN ASSIGNMENTS .................................................................... 4-12
BLOCK DIAGRAM
.................................................................................................................................... 4-13
SECTION 4
MT8560 F/E LOADER PART
CONTENTS
................................................................................................................... 4-2
....................................................................................... 4-5
4-1
...................................... 4-7