Sharp XG-PH70X - Chapter 4. Troubleshooting Table; Troubleshooting Table

XG-PH70X/XG-PH70X-N (1st. Edition)
4 – 1
XG-PH70X
Service Manual
CHAPTER 4. TROUBLESHOOTING TABLE
[1] TROUBLESHOOTING TABLE
Checking the PWB Performance
DVI input in trouble Video & S-video input in
trouble
RGB input in trouble
Feed the test pattern sig-
nal from PC.
Page 4-2, 4-3 Go to
"checking the S-Video &
video circuit".
Feed the test pattern sig-
nal from PC.
Is specified cable Con-
nected between Source
and projector?
NO Use specified cable. Is specified cable con-
nected between PC and
projector?
NO Use specified cable.
YES YES
Is supply voltage as spec-
ified?
NO Power circuit in trouble. Is supply voltage as spec-
ified?
NO Power circuit in trouble.
YES YES
Does image appear? NO Check the connectors,
starting from the Source
input circuit.
Does image appear? NO Check the connectors, start-
ing from the Source input cir-
cuit.
YES YES
Check the PC I/F unit Check the PC I/F unit
Checking the PWB Performance
RGB through output in trou-
ble
Remote control in trouble Audio input in trouble
Through output circuit in
trouble.
Checking the IR Unit. Page 4-3, 4-4 Go to "Check-
ing the audio signal".
Is specified cable Con-
nected between Source and
projector?
NO Use specified cable.
YES
Is supply voltage as speci-
fied?
NO Power circuit in trouble.
YES
Does sound appear? NO Check the connectors, starting
from the Source input circuit.