Zenith XBV243 series Service Manual - Table of Contents

TABLE OF CONTENTS

VR168 - 923-03485

D35E COMBO - TOC

SECTION 1 SUMMARY

1-1

SPECIFICATIONS .......................................... 1-1

KEY TO ABBREVIATIONS ................................ 1-2

SERVICING PRECAUTIONS .............................. 1-3

PACKAGE CONTENTS ..................................... 1-4

SECTION 2 CHASSIS

2-1

CABINET .................................................... 2-1

EXPLODED DIAGRAM ..................................... 2-1

SELF DIAGNOSTICS ....................................... 2-2

CABINET DISASSEMBLY ................................. 2-3

CIRCUIT BOARD DISASSEMBLY ........................ 2-4

SECTION 3 ELECTRICAL

3-1

DVD TROUBLESHOOTING ................................ 3-1

VCR TROUBLESHOOTING .............................. 3-17

SECTION 4 MECHANICAL

4-1

VCR DECK MECHANISM .................................. 4-1

VCR ALIGNMENT ........................................ 4-13

MAINTENANCE/INSPECTION PROCEDURE ......... 4-19

VCR MECHANISM TROUBLESHOOTING ............. 4-23

DVD DECK MECHANISM ............................... 4-29

MECHANISM DISASSEMBLY ........................... 4-30

DECK MECHANISM ADJUSTMENT ................... 4-32

SECTION 5 PARTS

5-1

COMPONENT PARTS .......................................... 5-2

TOC-1

SECTION 6 DIAGRAMS

6-1

EXPLODED VIEW ........................................... 6-1

VCR EXPLODED VIEW ..................................... 6-2

DVD EXPLODED VIEW ..................................... 6-3

MAIN BLOCK DIAGRAM .................................. 6-4

POWER BLOCK DIAGRAM ................................ 6-5

TUNER-IF BLOCK DIAGRAM ............................. 6-6

Y/C BLOCK DIAGRAM ..................................... 6-7

AUDIO BLOCK DIAGRAM ................................. 6-8

HIFI BLOCK DIAGRAM ................................... 6-9

SYSTEM BLOCK DIAGRAM ............................. 6-10

SECTION 7 SCHEMATICS

7-1

POWER SUPPLY CIRCUIT ................................ 7-1

TUNER/IF CIRCUIT ....................................... 7-2

AV CIRCUIT ................................................. 7-3

HIFI CIRCUIT .............................................. 7-4

SYSTEM CIRCUIT .......................................... 7-5

DVD CIRCUIT ............................................... 7-6

DRIVE RF CIRCUIT ........................................ 7-7

MPEG CIRCUIT ............................................. 7-8

AUDIO CIRCUIT ............................................ 7-9

MICRO CIRCUIT .......................................... 7-10

JACKPACK CIRCUIT ..................................... 7-11

VCR PCB LAYOUT ........................................ 7-12

DVD PCB LAYOUT TOP .................................. 7-13

DVD PCB LAYOUT BOTTOM ............................ 7-14

OTHER PCB LAYOUTS ................................... 7-15

WAVEFORMS .............................................. 7-16