ROADSTAR LCD7114KL
Service Manual

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Contains Circuit Diagrams
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PDF Format
Complete manual
Language: English

Price: $4.99

Description of ROADSTAR LCD7114KL Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 18 (click to view)

LCD-71114KL Service inspection Manual

Page 2 of 5

(2) Faulted FunctionÂ£Âº Audio Sound (Screen Picture is normal) Not Checking Volume Level in Muting (Silent) Mode as below inspected process:

Start

YES Check if the main unit is in MUTE Mode NO
Check IC U13 (Pin-9 & Pin-16) which have audio output or not

Press the MUTE button of remote control YES

NO

Check Speaker, Soldering or J111 Cable may be damaged

Check IC U13 (Pin-5)

NO

+12V power supply or not

YES
Check power Check IC U13 (Pin-4 & Pin-6) audio signal input or not Check IC U12 near the NO components of circuitry supply circuitry

YES

Check IC U15(3\13) pin has audio signal output or not YES

NO

Check R132 and R136 and so on

Check IC U14 (Pin-50 & Pin-54) near the components of circuitry

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