Blank Screen, No Video Or Raster - DEC VR315 Service Manual

Table 2–1 Blank Screen, No Video or Raster
Symptom
Blank screen, no video
or raster. Power to
the monitor is on (the
power switch is in) but
the power indicator
light is off.
No video or raster, but
the power indicator is
on.
Possible Cause Suggested Solution
The power cord is Connect the power cord to the
not connected to power source or monitor.
the power source or
monitor.
Low or no power at Use another wall outlet. If
wall outlet. the problem continues, call the
facilities person.
Power supply Replace the power supply
module is faulty. module (Section 3.2.2).
Deflection module Replace the deflection module
is faulty. (Section 3.2.4).
Video module is Replace the video casting
faulty. assembly (Section 3.2.5).
Brightness or Adjust the brightness and
contrast is set contrast controls.
incorrectly.
Power to the host Turn power to the host system
system is not on. on.
Host signal cable is Connect the signal cable to the
disconnected. monitor and host.
Troubleshooting 2–3