Editing VAXstation 3100 Troubleshooting Guide (section)

== Monitor faults ==
{| class="wikitable styled-table" style="width:100%; text-align:left;"
|+ '''Monitor troubleshooting (DEC Table 2-17)'''
! Symptom !! Corrective action, in order
|-
| No LED, no raster || Check the power cord, the 120/240 V setting and the fuse; then the monitor's own service guide
|-
| Compressed raster, no video || Check the monitor cable and that it is the right type (BC18P-type without a graphics module; BC19S or BC23J-03 with one); adjust contrast and brightness; run TEST F (no graphics module) or TEST 4 (graphics module) and replace the failing module
|-
| Raster but no video || Adjust contrast and brightness; run TEST F or TEST 4 as above
|-
| No LED but good video || Replace the monitor's LED assembly
|}
<ref name="mg60" />
DEC's guides for the monitors are the VR150 and VR160 pocket service guides, the VR260 maintenance advisory and the VR290 service guide.<ref name="mg90" />