Motorola SSETM 5000 9.9 Top/Side Button Test

November 11, 2004 6881094C12-A
9-14 Troubleshooting Charts: Top/Side Button Test
9.9 Top/Side Button Test
UseRSS
toenable
button
Replace
U501
Replace
Housing
Assembly
Verifyconnections
andcontroltop/PTT
flexcircuitand
repairasnecessary
UsingRSS,
verifyproblem
buttonisenabled
forfunction
Levels
correct?
Verifyphysical
operationof
buttons
Buttons
OK?
Button
checkOK?
Buttons
Enabled?
Usingavoltmeter,measurethevoltageat
U504pin3whiledepressingthefollowing
buttons:
-Display
-TopSideButton
-One-DotSideButton
-Two-DotSideButton
Thevoltageforeachdepressed
buttonshouldbe0V.Thevoltagefor
eachbuttonwhennotdepressedshould
be2.9V.
Top/Side
ButtonTest
Synopsis
Thischartrelatestoafailurein
readingthebuttons:Display,
Top SideButton,One-DotSide
Button,orTwo-DotSideButton.
Basicfailuremodesareasfollows:
1)Failureincontrolsflexcircuit
2)Badconnection
3)DefectiveSwitch
4)DefectiveA/DportinGCAPII
Verifyoperation
ofchannelknob
usingButtonTest
flowchart
No
No
Yes
Yes
No
No
Yes
Yes