Sharp Aquos LC 20B2UB, Руководство по обслуживанию

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LC-20B2UA
LC-20B2UB
SERVICE MANUAL
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored
to its original condition and only parts identical to those specified should be used.
MODELS
LC-20B2UA
LC-20B2UB
CONTENTS
»
IMPORTANT SERVICE SAFETY
PRECAUTION .................................................... 2
»
SPECIFICATIONS ............................................. 5
»
OPERATION MANUAL ...................................... 6
»
DIMENSIONS .................................................... 8
»
REMOVING OF MAJOR PARTS ....................... 9
»
ADJUSTING PROCEDURE OF
EACH SECTION .............................................. 12
»
TROUBLE SHOOTING TABLE ........................ 22
»
CHASSIS LAYOUT .......................................... 26
»
BLOCK DIAGRAM ........................................... 28
»
DESCRIPTION OF SCHEMATIC DIAGRAM .. 30
»
SCHEMATIC DIAGRAM
Ë
CONTROL and RC/LED UNIT .................. 31
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DIGITAL UNIT ............................................ 32
Ë
ANALOG UNIT .......................................... 42
Page Page
Ë
INVERTER-A UNIT .................................... 46
Ë
INVERTER-B UNIT .................................... 47
»
PRINTED WIRING BOARD ASSEMBLIES ..... 48
»
PARTS LIST
Ë
ELECTRICAL PARTS ................................ 62
Ë
DIGITAL UNIT ............................................ 62
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ANALOG UNIT .......................................... 67
Ë
CONTROL UNIT ........................................ 70
Ë
RC/LED UNIT ............................................ 70
Ë
INVERTER-A UNIT .................................... 70
Ë
INVERTER-B UNIT .................................... 71
Ë
CABINET AND MECHANICAL PARTS ..... 72
Ë
ACCESSORIES PARTS ............................ 74
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PACKING PARTS ....................................... 74
»
PACKING OF THE SET ................................... 75
SHARP CORPORATION
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
LCD COLOR TELEVISION
OUTLINE
The 20" LCD panel used in the LC-20B2UA has been redesigned as from the April production. Accordingly, the
circuitry and the adjustment procedures have been partially changed.
This Service Manual covers all the changes.
The LC-20B2UB is a sister model with a different cabinet color.
S42I5LC20B2UB