Lg tch 500 service manual

Page 1

LG

STEREO CAR CD
RECEIVER
w .................. g SERVICE MANUAL

MODEL : TCH-5OO

FEBRUARY, 2001
P/NO : 3828REF007F Printed in Korea

Page 2

CONTENTS

SECTION 1 SUMMARY

SERVICING PRECAUTIONS ............................................. 3
ESD PRECAUTIONS ................................................... 4
SPECIFICATIONS ..................................................... 5
LOCATION OF CUSTOMER CONTROLS .................................... 6

SECTION 2 ELECTRICAL

ADJUSTMENTS ....................................................... 7
1. TEST & ADJUSTMENT POINT ......................................... 7
2. FM ADJUSTMENT POINT ............................................. 8
3. AM(MW) ADJUSTMENT .............................................. 9
4. LW ADJUSTMENT(OPT|ONAL) ........................................ 1O

ERROR INDICATION .................................................. 11

ELECTRICAL TROUBLESHOOTING GUIDE ................................ 12

INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTION OF ICs ................. 18

BLOCK DIAGRAM .................................................... 34

CIRCUIT DIAGRAMS .................................................. 35

1. MAIN CIRCUIT DIAGRAM ............................................ 35

2. AM(MW)/TUNER/FRONT CIRCUIT DIAGRAM ............................. 36

PRINTED CIRCUIT DIAGRAMS .......................................... 37

1. MAIN P.C.BOARD ................................................... 37

2. TUNER P.C.BOARD ................................................. 39

3. FRONT P.C.BOARD ................................................. 39

SECTION 3 CABINET MAIN CHASSIS & MACHANISM
° EXPLODED VIEWS ................................................... 40
SECTION 4 REPLACEMENT PART LIST

CABINET MAIN CHASSIS & MECHANISM .................................. 41
ELECTRICAL ........................................................ 42