VR18-Chip Replacement DOC - Boot ROM-A.doc
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P.O. Box 1196 / Bridgeview, IL 60455
888.751.5444 / 888.307.8014 fax
Technical Support: 866.342.5332
http://www.futuredesigncontrls.com
Replacement of VR18 IC’s: Disk-on-Chip and Boot ROM
A. Procedure of removing the old ICs
1. Turn off the power, take off communication cords, and take out I/O cards in rear Slots and the
CF card.
2. If it is panel-mount style, remove the mounting clamp. If it is bench top/portable style,
remove the handle, two ears and two feet as described below; figure references may be found
in the VR18 Manual.
a. The handle: Remove it in a reverse way as Figure 2-11, 2-10 & 2-9.
b. Two ears: Remove them by pulling toward the backside.
c. Two feet: Remove them in a reverse way as Figure 2-14, 2-13 & 2-12.
3. Remove six screws in the back, take off the metal housing, and then turn the main part of
recorder upside down with the display against you
4. Carefully disconnect cables of CN2 (one red cable), CN4 (one blue cable), CN3 (one black
cable). Regarding CN1, pull two ends of cable socket toward the display, and carefully take
off the cable.
Cables CN2, CN3 & CN4
5. Remove four screws on the board and turn the main board upside down.
