Samsung DCS Compact, Installation Manual

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S A M S U N G D C S I N S T A L L A T I O N
T E C H N I C AL MANUAL A P R I L 1 9 9 6
PART 9. CHANGING SOFTWA R D
9.1 ACCESSING THE EPROMS
In order to easily replace the system software, it may be necessary to partially disassemble the
KSU. This procedure should be performed in the following sequence while referring to Figure 9–1.
1. Check the battery switch on the RAM pack and make sure it is on.
N O T E : If the documentation with the new software indicates that reprogramming will be necessary
you may wish to switch the battery off at this stage to ensure the system is properly
d e f a u l t e d .
2. Switch off the KSU. Do not unplug the KSU.
3. Remove the 25 pair cable(s).
4. Remove the 4 COP card and RAM pack and carefully set aside.
5. Remove the MISC card and 2 SLI card if equipped.
6. Remove the four holding screws as shown in Figure 9–1.
7. Remove the plastic card support frame.
9.2 REPLACING THE EPROMS
Gently remove the two or four EPROMS (the quantity is dependent on the software package) using
a chip extraction tool or by gently prying with a small flat bladed screwdriver. Set the removed
EPROMS aside carefully in case they need to be reinstalled. See Figure 9–2.
Remove the new EPROMS from their protective packaging and confirm that the legs on the
EPROMS are straight. If the legs are not straight, contact EURO Tech team. Carefully insert the new
EPROMS in their designated sockets, inserting the pair closest to the power supply first.
With the plastic support rack still removed install the RAM pack and plug in the 25 pair cable for the
4
° ø
8 motherboard.
Switch on the KSU and verify that it is operating. If the KSU does not operate, remove the new
EPROMS and reinstall the old EPROMS and test again. If the system still fails to operate, contact
Samsung Technical Support.
When the system is operating satisfactorily, switch it off and remove the RAM pack and 25 pair
cable. The KSU can now be reassembled in the reverse order in which it was disassembled.
9–1