Alarm Does Not Sound - IBM 3151 Manual To Operations

Solving Problems
Alarm Does Not Sound
If the screen is blank, go to page 5-9.
1
Set the power switch to 0 (Off); wait ten seconds. then set the power switch
to
I
(On).
Does the alarm sound once?
Yes Go to step 2.
No Go to step 3.
2
Press and hold the
Ctrl
key, then press the
+
Alrm
key.
Does the alarm sound once?
Yes Adjust the sound of audible alarm for your comfort; then continue
work.
No The keyboard is failing. Replace the keyboard. See page 5-20 for
instructions.
3
Look at the back side of the video element.
Is a cartridge inserted? (See Figure 5-1 on page 5-1 for location.)
Yes Set the power switch to 0 (Off); remove the cartridge, then set the
power switch to
I
(On).
If the alarm sounds once, the cartridge is failing; order' a new
cartridge. If not, the video element is failing. Replace the video
element. See page 5-20 for instructions.
No The video element is failing. Replace the video element. See page
5-20 for instructions.
Chapter 5. Solving Problems
5-7