LG XA64 Service Manual page 13

Owner's manual (14 pages)

Manual (12 pages)

Owner's manual (12 pages)

Table of Contents

1. SMPS PART ........................................................................................................................................... 3-2

2. MUTE ...................................................................................................................................................... 3-3

3. AUDIO ABNORMAL ............................................................................................................................... 3-4

4. AUDIO FUNCTION MODE ..................................................................................................................... 3-5

5. IC301 TROUBLESHOOTING ................................................................................................................. 3-6

6. IC600 TROUBLESHOOTING ................................................................................................................. 3-7

7. IC601 TROUBLESHOOTING ................................................................................................................. 3-8

8. IC603 TROUBLESHOOTING ................................................................................................................. 3-8

9. U503 TROUBLESHOOTING .................................................................................................................. 3-9

10. TU501 FM TUNER MODULE ................................................................................................................. 3-9

11. CD PART .............................................................................................................................................. 3-10

12. CD READING CHECK .......................................................................................................................... 3-11

13. USB PART ............................................................................................................................................ 3-12

WAVEFORMS

............................................................................................................................................. 3-13

1. CD SEARCHING WAVEFORM ............................................................................................................ 3-13

2. SPINDLE DRIVE & MOTOR WAVEFORM .......................................................................................... 3-13

3. CD PLAYING WAVEFORM .................................................................................................................. 3-14

4. CD STOP ACTION WAVEFORM ......................................................................................................... 3-15

5. CD READING WAVEFORM ................................................................................................................. 3-15

6. CD PLAYING RF WAVEFORM ............................................................................................................ 3-16

7. USB OPERATING WAVEFORM .......................................................................................................... 3-17

8. RADIO OPERATING WAVEFORM ...................................................................................................... 3-17

WIRING DIAGRAM

................................................................................................................................... 3-19

BLOCK DIAGRAMS

CIRCUIT DIAGRAMS

1. SMPS CIRCUIT DIAGRAM .................................................................................................................. 3-23

2. MAIN CIRCUIT DIAGRAM ................................................................................................................... 3-25

3. MAIN - CD CIRCUIT DIAGRAM ........................................................................................................... 3-27

4. MCU CIRCUIT DIAGRAM .................................................................................................................... 3-29

5. FRONT, USB & HEADPHONE CIRCUIT DIAGRAM ........................................................................... 3-31

CIRCUIT VOLTAGE CHART

PRINTED CIRCUIT BOARD DIAGRAMS

1. MAIN P.C.BOARD ................................................................................................................................ 3-35

2. SMPS P.C.BOARD ............................................................................................................................... 3-37

3. MCU P.C.BOARD ................................................................................................................................. 3-37

4. KEY P.C.BOARD .................................................................................................................................. 3-39

5. FRONT P.C.BOARD ............................................................................................................................. 3-39

SECTION 3

ELECTRICAL

CONTENTS

................................................................................................................................. 3-21

............................................................................................................................... 3-23

................................................................................................................. 3-33

.................................................................................... 3-2

......................................................................................... 3-35

3-1

Table of Contents