IBM 4247 Maintenance Information page 58

Feature Module
Name U54 Label
Coax IPDS
KxCXCvvv
U54 CRC
Coax SCS
KxCXCvvv
U54 CRC
Twinax IPDS
KxTXCvvv
U54 CRC
Twinax SCS
KxTXCvvv
U54 CRC
Figure 11. Models 001 and 002, Microcode Module Locations on Logic Board
K2 (x=2) is the module designation for Model 001. K5 (x=5) is the module designation for Model 002. The vvv is a
3 digit number that indicates the module code version number.
Return to step 14 on page 48.
Module
U2 Label
KxCXGvvv
U02 CRC
KxCXGvvv
U02 CRC
KxTXGvvv
U02 CRC
KxTXGvvv
U02 CRC
Chapter 1. Diagnosing Problems
58