IBM 6151 Maintenance And Service Manual page 358

Step 6
Release the Brightness Override Button; then look at the display.
Power-on
Indicator
Brightness
Override Button
Power
Switch
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~Failur
Indlcal
Brightne
Control
AJZB211
IS ANYTHING DISPLAYED ON THE SCREEN (such as; text,
raster, lighted background)?
NO
Record SRN 26-4BO-4AO-61O; then go to "Step 9" on
page 3-6100-9.
YES
Continue on the next page.
3-6100-6 Service Manual