IBM System/36 Maintenance Information Manual page 82

3. Lamp Test
a. Set the Security switch to the Service position. Press the Select Function key and select function 8
(Lamp Test). Then, press the Start Function key.
If all of the control panel lights go on and an 8 appears in all of the displays, the control panel is
correct. Continue with step 3b. If the control panel is not correct, go to step 6.
If you cannot select and start function 8, suspect the following FRUs:
%
FRU
85 Control panel
10 Operator panel cable
5 AIF2
b. Press the Start Function key several times.
If only the 8 in the Function display blinks, the control panel is correct. Continue with step 4. If the
8s in the Input displays blink, the control panel is not correct. Suspect the following FRUs:
% FRU
85 Control panel
10 Operator panel cable
5 AIF2
4. Select Function Key/Input Key Test
a. Press
th~
Select Function key and select function 1 (IPL).
If a 1 appears in the Function display and O's appear in the Input displays, the control panel is
correct. Continue with step 4b.
If the control panel is not correct, go to step 4d.
b. Press and hold the Select Function key. Repeat several times.
If only the Function display loops characters 1 through E, the control panel is correct. Continue
with step 4c. If the control panel is not correct, go to step 4d.
c. Press the Select Function key and select function 1 (IPL). Press and hold, in sequence, each of the
four input keys. Repeat several times.
If only the Input display above the Input key you press loops characters 0 through F, the control
panel is correct. Go to step 5. If the control panel is not correct, continue with step 4d.
d. The control panel is not operating correctly. Suspect the following FRUs:
% FRU
70 Control panel
25 AIF2
5 Operator panel cable
5-6
5363 Maintenance Information