Digital Equipment VAXstation 3100 Maintenance Manual page 178

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Expansion Boxes 157
2. Check all cables to make sure they connect properly. Remove the shield
to check the cables on the back of the drive. Note that two power cables
conn. e ct to the resistor load board.
3.
ff the TK50Z expansion box does not have the SCSI ID switch board
installed, check the jumpers on the TZK50 controller board for proper
installation. Refer to Figure 6--21 for jumper locations and SCSI port
address ID confirmation. Figure 6--21 shows the controller board set for ID
address 5, with parity checking enabled, and internal diagnostics disabled.
Make sure the three ID address jumpers (Pl, P2,
~d
P3) are set to an
address ID of 5. Jumper P4 is the parity checking jumper and must be
installed for normal operation. Jumper P5 is the diagnostic jwnper and
must be removed for normal operation. Note the position of the spare
jumper(s). Spare jumpers should be stored across P5 and one of the spare
posts.
Z7
ze
zg
MA-Xo1 • 1-11
Figure 6-21 TKSOZ·FA Expansion Box Controller Board Jumper Settings