ViewSonic PJ870 Service Manual - Page 57

Power, Troubleshooting, Start

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11.1870 6-2.1 A. Power Troubleshooting Start Is LED indicator OK? Yes Is Lamp OK ? Yes Change Ballast Yes Check power cord Yes Lamp & input power assembly voltage OK? Yes No Supply AC power Change DC-DC No Change Lamp Change MB N Change Main Board Change Ballast End Reassembly lamp ViewSonic Corporation [ 6-4 ] Confidential - Do Not Copy

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1
1
.1870
6-2.1
A.
Power
Troubleshooting
Start
Check
Reassembly
Is
LED
indicator
OK?
power
cord
Yes
Lamp
assembly
OK?
&
input
power
voltage
lamp
Yes
No
Yes
Change
Supply
AC
power
DC
-DC
No
Is
Lamp
OK
?
Change
Change
MB
Lamp
Yes
Change
Ballast
Yes
Change
Main
Board
End
N
Change
Ballast
[
6-4
]
ViewSonic
Corporation
Confidential
-
Do
Not
Copy