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TABLE OF CONTENTS Page

1 Safety Precaution ------------------------------------------------------------------------------------------------ 3

1.1. General Guidelines ---------------------------------------------------------------------------------------- 3

2 Warning ------------------------------------------------------------------------------------------------------------- 4

2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive(ES) Devices 4

2.2. About lead free solder (PbF) ---------------------------------------------------------------------------- 5

3 Service Navigation ----------------------------------------------------------------------------------------------- 6

3.1. Service Hint -------------------------------------------------------------------------------------------------- 6

3.2. Applicable signals ------------------------------------------------------------------------------------------ 7

4 Specifications ----------------------------------------------------------------------------------------------------- 8

5 Troubleshooting Guide ----------------------------------------------------------------------------------------- 9

5.1 No Power ----------------------------------------------------------------------------------------------------- 9

5.2 Abnormal Display ------------------------------------------------------------------------------------------ 10

5.3 No Display --------------------------------------------------------------------------------------------------- 11

5.4 Sound Problem --------------------------------------------------------------------------------------------- 12

5.5 Remote Control Malfunction ---------------------------------------------------------------------------- 13

6 Disassembly and Assembly Instructions --------------------------------------------------------------- 14

7 Block Diagram ---------------------------------------------------------------------------------------------------- 18

8 Schematic Diagram --------------------------------------------------------------------------------------------- 19

8.1 Main Board -------------------------------------------------------------------------------------------------- 19

8.2 Power Board ------------------------------------------------------------------------------------------------ 29

8.3 Key Board ---------------------------------------------------------------------------------------------------- 32

8.4 IR Board ------------------------------------------------------------------------------------------------------ 33

9 Wiring Connection Diagram --------------------------------------------------------------------------------- 34

9.1. Caution Statement -------------------------------------------------------------------------------------- 34

9.2. Wiring -------------------------------------------------------------------------------------------------------- 34

10 Exploded View and Replacement Parts List ---------------------------------------------------------- 35

10.1. Exploded View ------------------------------------------------------------------------------------------ 35

10.2. Replacement Parts List -------------------------------------------------------------------------------- 36

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Sanyo FVM4612 Service Manual

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