Power can not be turned on
Are
voltage
supplied at pins
(9),(12) and (14) of E800 on
the PWB assembly MAIN in
standby mode?
Are
voltage supplied
at pins (2) and (7) of E800
on the PWB assembly
MAIN in standby
mode?
NO
YES
(9): +6.0V
(12): +4.0V
(14): GND
Does
LAMP (DK03) or
TEMP (DK02) indicator light
or blink?
YES
(2): +15V
(4): GND(for +15V)
(7): +17V
(11): GND(for +17V)
NO
*: Be sure to unplug the power cord before measuring resistance.
Measure
resistance* between
pins (9) and (14), and
between pins (12) and
(14) of E800.
Disconnect TSW
from power unit circuit, and
measure resistance of
TSW.
Open
0
Ω
PWB assembly MAIN
Power unit (circuit)
Thermal switch (TSW)
Open
Power unit (circuit)
Fuse on the power unit
(circuit)
NO
Measure
resistance* between
pins (2) and (4), and between
pins (7) and (11) of
E800.
0
Ω
PWB assembly MAIN
Power unit (circuit)
Power unit (circuit)
Short
Open
Go to the next page
YES
Measure
resistance*
between pins (1) and
(2) of E808 when the
S941 is pushed.
PWB assembly SW
E808, E941
PWB assembly MAIN
Open
0
Ω
Lamp door
Re-attach lamp
door
ViewSonic
Corporation
Co
nfidential
-
Do
Not
Copy
PJ1158-1
14
Summary of Contents for PJ1158-1
Page 41: ...7 Wiring diagram Wiring diagram 1 ViewSonic Corporation Confidential Do Not Copy PJ1158 1 38 ...
Page 42: ...Wiring diagram 2 ViewSonic Corporation Confidential Do Not Copy PJ1158 1 39 ...
Page 43: ...Wiring diagram 3 ViewSonic Corporation Confidential Do Not Copy PJ1158 1 40 ...
Page 44: ...Wiring diagram 4 ViewSonic Corporation Confidential Do Not Copy PJ1158 1 41 ...
Page 45: ...Wiring diagram 5 ViewSonic Corporation Confidential Do Not Copy PJ1158 1 42 ...
Page 46: ...Wiring diagram 6 ViewSonic Corporation Confidential Do Not Copy PJ1158 1 43 ...
Page 47: ...Wiring diagram 7 ViewSonic Corporation Confidential Do Not Copy PJ1158 1 44 ...
Page 48: ...Wiring diagram 8 ViewSonic Corporation Confidential Do Not Copy PJ1158 1 45 ...
Page 49: ...Wiring diagram 9 ViewSonic Corporation Confidential Do Not Copy PJ1158 1 46 ...
Page 50: ...Wiring diagram 10 ViewSonic Corporation Confidential Do Not Copy PJ1158 1 47 ...
Page 51: ...Wiring diagram 11 ViewSonic Corporation Confidential Do Not Copy PJ1158 1 48 ...
Page 52: ...8 Disassembly diagram ViewSonic Corporation Confidential Do Not Copy PJ1158 1 49 1b 1b ...
Page 53: ...ViewSonic Corporation Confidential Do Not Copy PJ1158 1 50 ...
Page 56: ...ViewSonic Corporation Confidential Do Not Copy PJ1158 1 53 ...
Page 76: ...11 Block diagram ViewSonic Corporation Confidential Do Not Copy PJ1158 1 73 ...