Second-Generation Channel Interface Processor (CIP2) Installation and Configuration 35
CIP2 Hardware Installation
Step 6 Using the thumb and forefinger of each hand to pinch each ejector lever, simultaneously
push both ejector levers inward (toward the interface ports) until they snap into place and
are parallel to the faceplate. (See Figure 18c on page 32.)
Step 7 Use a screwdriver to tighten the two captive screws on the interface processor faceplate,
before installing additional interface processors. This prevents the interface processor
from becoming partially dislodged from the backplane and ensures proper EMI shielding.
(These screws must be tightened to meet EMI specifications.)
Proceed to the next section to attach the bus and tag and/or ESCON cables between the CIP2
interface ports and your channel.
Attaching the CIP2 to the Channel
The CIP2 can be connected to the channel using the bus and tag cables (for the PCA) and/or using
a fiber-optic ESCON cable with duplex connectors (for the ECA). Bus and tag and ESCON
connections each have their own special requirements.
The following sections discuss bus and tag and ESCON connections:
• Attaching the Bus and Tag Cables
• Attaching the ESCON Cable, page 39
Attaching the Bus and Tag Cables
The PCA is connected using the bus and tag cable with 78-pin connectors (the Y cable) and the bus
and tag cables with 48-pin, type A connector blocks (the VA and VB cables). In general, a Y cable
attaches to the PCA on the CIP2, and the VA and VB cables attach to the remaining ends of the Y
cable.
Attaching the PCA to the Host Channel
Attach the PCA to the host as follows.
Caution To reduce the potential for problems, you should have an authorized service representative
or other qualified service person perform the following procedure. To prevent hardware problems
with your host processor, all the channel connections must be tight. A loose connection can cause
the host processor or its channel to halt. All connections must be screwed together.
Step 1 Vary offline the host channel to which the PCA will be attached.
For instructions on how to vary the host channel offline, refer to the documentation for
your mainframe operating system.
Caution Ensure the select/bypass switch is in the bypass position; otherwise, the mainframe
operating system can be negatively affected.
