Service manual

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Chapter 3 Power Supply Trouble Shooting Guide
Chapter 3 Power Supply Trouble Shooting GuideChapter 3 Power Supply Trouble Shooting Guide
Chapter 3 Power Supply Trouble Shooting Guide
1. Introduction
1. Introduction1. Introduction
1. Introduction
This document is prepared to be a guide to repair trouble sets, some problems happen more
frequently are taken as example in it.
2. Pr
2. Pr2. Pr
2. Problems
oblemsoblems
oblems
(a)
(a) (a)
(a) no power
Yes
YesYes
Yes
No
NoNo
No
Yes
YesYes
Yes
No
NoNo
No
No power
Is CN701 pin7 =3
v?
Check power BD
Change main BD
Is door SW press
down?
Check lamp door
Check lamp doorCheck lamp door
Check lamp door
Change power BD