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

CHAPTER 4.
XG-PH70X

TROUBLESHOOTING TABLE

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