Power Supply Trouble Shooting Guide - Hitachi CP-DX250 Service Manual

5.5 Power Supply Trouble Shooting Guide

This document is prepared to be a guide to repair trouble sets, some problems happen more
frequently are taken as examples.
5.5.1 Problems
(1) No power
No Power
Check power BD
Is CN701 pin 9
=3.3v?
No
Is door SW pressed
down?
No
Check lamp door
Yes
Pin9
Yes
Change main
BD
Change power
BD
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