2
a.
You may need to remove a mount screw from the back of the unit that is
mounted to the back of the PEB.
7.
Insert the new 838-IO Plus card into slot #1 (far left) of the PEB
8.
If using the new 838-32K-SC expansion module plug the expansion module on top of
the 838-IO Plus side card
a.
Ensure that the power jumper/switch is set to the INT for internal power as it
will be powered by the 838-IO Plus PEB card.
b.
Ensure the 838-32K-SC ON/OFF switch is set to the ON position. (This switch
turns the 32K module on or off. When mounted in the 838-IO Plus Case move
the switch to the UP position to turn the card on.
Note: The system can only have one memory expansion enabled at any one
time. Do not try to have the 838-32K-SC, a PEB memory expansion card or an
internal memory expansion such as the 32k internal MOD being used at the
same time. This may result in damage to your system!
9.
Plug the new 838-IO Plus Side-card onto the TI-99/4 or TI-99/4A side-port bus
connector.
10.
Connect the 838-IOP DB37 cable between the two cards.
11.
Tighten the mount screws on the cable connectors on both ends to secure the cable.
12.
Double-check all connections
13.
Put top cover of PEB back on
14.
Plug power cable back into PEB
15.
Power up PEB
16.
Verify the IOP link/power led is on.
a.
This is the bottom LED on the 838-IO Plus Side-card. This LED should be
GREEN.
17.
If the 838-32k-SC module is installed then the top yellow LED will be lit before the
console is powered up. Once powered up the LED will turn off and only engage when
the 32k is being used.
Note: The 838-32k-SC module is powered by the 838-IO Plus and not the console. To use
this module inside the 838-IO Plus SC the PEB must be powered on.
