LG BD550 Service Manual page 126

COMPONENT REPAIR GUIDE
1. ABNORMAL MD OPERATION ................................................................................................................. 4-2
2. "ALL BD DISC" READING ERROR .......................................................................................................... 4-3
3. "ALL DVD DISC" READING ERROR ....................................................................................................... 4-4
4. "ALL CD DISC" READING ERROR .......................................................................................................... 4-5
5. ABNORMAL SERVO OPERATION .......................................................................................................... 4-6
HOW TO USE THE SA RESET FUNCTION
1. PURPOSE ................................................................................................................................................. 4-7
2. REQUIRED SA RESET. ........................................................................................................................... 4-7
3. SA RESET PROCEDURE ........................................................................................................................ 4-7
MAJOR IC INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTION
1. BCM7630 .................................................................................................................................................. 4-9
2. IC704 (R2A30209SP-W02Z) : SPINDLE MOTOR AND 6CH ACTUATOR DRIVER ............................. 4-12
3. PICK-UP CONNECTOR TERMINAL PIN ASSIGNMENTS (SF-BD412) ............................................... 4-14
BLOCK DIAGRAM
.................................................................................................................................... 4-15
2010
SECTION 4
BCM7630 F/E LOADER PART
CONTENTS
............................................................................................................... 4-2
....................................................................................... 4-7
4-1
...................................... 4-9