Operator Panel/Indicator Card, Removal And Replacement; Operator Panel/Indicator Card - IBM 3274 51C Maintenance Information

4.14 Operator Panel/Indicator Card, Removal and
Replacement (Figure 4-13)
1. Place the
Irl / 19J
(on/off) switch in the
19J
position.
2. Remove the power cord plug from the building power
rece ptacle.
3. Open the gate (paragraph 4.2).
4. Open the customer access panel door" .
5. Depress the four locking tabs
G
on the back of the
operator panel and remove the panel.
6. Disconnect the 11, J2, and J3 (2400-,4800-, and
9600-bps Integrated Modems) connectors
e
from the
indicator card.
Figure 4-13. Operator Panel/Indicator Card
4-14
7. Depress the two panel tabs
CD
to release the card.
8. To reinstall the panel, reverse these steps. Do the
following while reinstalling the card and panel:
a. Card - Align the card holes
a
with the panel
stems and insert the card edge
Q
into the panel
slot. Ensure that the power-on indicator is properly
aligned, then press down on the card to position it
under the two panel tabs.
b. Panel - Insert the panel into the gate at the bottom
edge at a slight angle, with the panel door in the open
position.