Nvram Protection Jumper - UEi RACKtangle DNR-12-1G Series User Manual

STEP 3: To remove the lower PCB board from the carrier, do the following:
STEP 4: Locate J4 jumper block on board removed in the previous step. Refer to
NVRAM
Protection
Jumper
STEP 5: Insert jumper between pins 13 and 15 on J4 jumper block. Refer to Figure 4-18.
STEP 6: To install the lower PCB board into the carrier, do the following:
© Copyright 2018
United Electronic Industries, Inc.
DNR-X-1G Series RACKtangle and HalfRACK Systems
CAUTION! Care must be taken when removing PCB boards from carrier.
Over-tightening or forcing hardware can crack boards, damage
components and/or leave the DNR- NIC/CPU module inoperable.
a. Loosen 1 Phillips screw (4-40 x 1 inch) from the bottom of the carrier
using 1/4" locknut driver and Phillips screwdriver. Remove screw, 3
plastic spacers, and locknut. Retain hardware.
b. Gently slide lower PCB board from carrier.
Figure 4-18 for location.
Figure 4-18. NVRAM Protection Jumper
CAUTION! Care must be taken when replacing PCB boards into carrier.
Over-tightening or forcing hardware can crack boards, damage
components and/or leave the DNR- NIC/CPU module inoperable.
a. Gently slide lower PCB board into carrier. Care must be taken when
sliding the board in; electrolytic capacitors on board can get damaged if
they scrape against top board.
b. Align PCB board LEDs, RESET button, and sync port with openings on
carrier: Be sure the RESET button is free to move. (See Figure 4-17 for
location)
c. Slide and align retained small plastic spacer between carrier and lower
board.
October 2018
Chapter 4
Installation and Configuration
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