Planar LT1201 user manual Power Flow

Page 17

POWER FLOW

J9,12V

INPUT

abnormal

REPLACE U7

abnormal

REPLACE U9

abnormal

REPLACE U4

CHK FUSE F1

CHK

U7 input +12V

U7 output +5V

normal

CHK

U9 input +5V

U9 output +3.3V

normal

CHK

U4 Pin 21 +1.8V

U4 Pin 126 +1.8V

normal

Return

LT1201 User Manual (020-1080-00 Rev. A)

17

Image 17

Contents LT1201 Table of Contents Specification Page Important Servicing Safety Precautions Location of Controls Power Indicator greenHot‐key define ＋ RightInterface Board Block DiagramPin No Symbol Function Internal connector pin definitionPin No Cable Color Pin NoDDC SCL RXC+ Symbol FunctionInt. C/B cable for 3M touch Cable pin definitionConnection relationship 27、33、38、39 YES Trouble ShootingYES Normal Power Flow Upgrade software method Page Page Page January