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2-3
Introduction to 4100U-S1 Cabinet, Continued
The 4100U CPU motherboard holds the CPU card, which is central to the 4100U-S1
system. It is mounted in the CPU bay, occupying two slots of space immediately beside
the power supply. These boards do not have a card address DIP switch (the CPU is
always address 0).
Figure 2-1. CPU Motherboard (566-227)
Continued on next page
CPU Motherboard
RUI TERMINAL BLOCK (TB2)
NETWORK WIRED MEDIA/ RS-232
TERMINAL BLOCK (TB3)
POWER/COMM TO
SYSTEM POWER
SUPPLY (P1)
RUI CLASS A
TROUBLE (LED1)
RUI PRIMARY SHORT
TROUBLE (LED2)
RUI SECONDARY
SHORT TROUBLE
(LED3)
BUS CONNECTOR
(J1) (Reserved for
future use)
POWER/COMMS TO
ADJACENT BAY (P4)
POWER/COMMS TO
ADJACENT BAY (P5)
POWER/COMMS TO
ADJACENT BAY (P6)
NETWORK WIRED MEDIA/ RS-232
TERMINAL BLOCK (TB1)
HEADER CONNECTOR TO
OPTION MOTHERBOARD
(P3)
CPU DAUGHTER CARD
CONNECTOR (J3)
POWER CONNECTOR TO
OPTION MOTHERBOARD
(P7)
COMMS CONNECTOR TO
OPTION MOTHERBOARD
(P8)
NETWORK DAUGHTER CARD
CONNECTOR
(J2)
RUI COMM
EARTH SHIELD
JUMPER (P9)
RS-232/NETWORK
CARD PORT 1
JUMPER (P10)
RS-232/NETWORK
CARD PORT 2
JUMPER (P11)
XMIT RTS RCV CTS GND
RUI RUI SHLD RUI RUI
B+ B- A+
A
-
1
1
5 5
XMIT RTS RCV CTS GND 24C RSRVD
PIEZO
1
8