IBM 3270 Manual page 243

Instructions for Setting 3274 Model 51C Loop Data Speed
Switches
H-6
1. Open the customer access area door on the bottom left of the Model
51C. To unlatch the door, turn the slotted screw head counterclockwise
with a coin.
r~~ o~~
.0 0 0
Slotted Screw Head
(Turn counterclockwise to open)
2. Set the Loop Data Speed switches on or off as indicated in the boxes
below. Push the switch up for on and down for off.
Loop Data Speed
2 3
ODD
Line
Pri
fDlBeed
Sec
l_g_j
Comm
rD1
Local
l_g_j
This panel is located in the customer access area.
"
\_)