89
ViewSonic Corporation
Confidential - Do Not Copy
PJ503D-1
3. Power Trouble Shooting Guide
Power BD Check.
Check output 12V
Prepare Meter.
Disconnect the wire
form DC-DC bd. to
PFC bd.
Fuse Broken ?
Proceed to "Primary
Circuit Check".
No 12V or 5V or
2.5V Output.
TOPSwitch
Broken ?
B+=380VDC ?
Replace new
TOPSwitch
Yes
No
Yes
Yes
No
No
Proceed to " Primary
Circuit Check"
Lacks of some componets
around TOPSitch ?
Check Trace.
solder them.
Yes
No
Summary of Contents for PJ503D-1
Page 26: ...23 ViewSonic Corporation Confidential Do Not Copy PJ503D 1 Figure2 ...
Page 35: ...32 ViewSonic Corporation Confidential Do Not Copy PJ503D 1 Figure1 15 ...
Page 37: ...34 ViewSonic Corporation Confidential Do Not Copy PJ503D 1 Fig3 2 ...
Page 44: ...41 ViewSonic Corporation Confidential Do Not Copy PJ503D 1 Fig 5 5 ...
Page 50: ...47 ViewSonic Corporation Confidential Do Not Copy PJ503D 1 Figure9 5 Figure9 6 Lamp Module ...
Page 55: ...52 ViewSonic Corporation Confidential Do Not Copy PJ503D 1 ...
Page 112: ...109 ViewSonic Corporation Confidential Do Not Copy PJ503D 1 8 PCB Layout Diagrams ...
Page 113: ...110 ViewSonic Corporation Confidential Do Not Copy PJ503D 1 ...
Page 114: ...111 ViewSonic Corporation Confidential Do Not Copy PJ503D 1 ...
Page 115: ...112 ViewSonic Corporation Confidential Do Not Copy PJ503D 1 ...
Page 116: ...113 ViewSonic Corporation Confidential Do Not Copy PJ503D 1 ...
Page 117: ...114 ViewSonic Corporation Confidential Do Not Copy PJ503D 1 ...
Page 118: ...115 ViewSonic Corporation Confidential Do Not Copy PJ503D 1 ...
Page 119: ...116 ViewSonic Corporation Confidential Do Not Copy PJ503D 1 ...
Page 120: ...117 ViewSonic Corporation Confidential Do Not Copy PJ503D 1 ...
Page 121: ...118 ViewSonic Corporation Confidential Do Not Copy PJ503D 1 ...
Page 122: ...119 ViewSonic Corporation Confidential Do Not Copy PJ503D 1 ...
Page 123: ...120 ViewSonic Corporation Confidential Do Not Copy PJ503D 1 ...
Page 124: ...121 ViewSonic Corporation Confidential Do Not Copy PJ503D 1 ...
Page 127: ...124 ViewSonic Corporation Confidential Do Not Copy PJ503D 1 Packing ...