ELCOM Euro-2000T Alpha Service Manual page 39

4.6. EPROM replacement.
1) Turn off the ECR and unplug the external adaptor.
2) Remove the top cabinet (see 4.1.).
3) Pull the EPROM out from the socket carefully. Do not short cut or damage the EPROM pins during the pulling out. It
may cause the sales data loss of.
4) Insert a new EPROM to the socket.
5) Replace the top cabinet (see 4.1.).
6) Execute all electronic tests.
Note: In the case of program version exchange it is necessary to clear SRAM by jumper JP1 (see 4.7.).
4.7. SRAM replacement.
1) Turn off the ECR and unplug the adaptor.
2) Remove the top cabinet (see 4.1.).
3) Disconnect power from SRAM by pulling jumper JP1 out. Insert jumper to the position farther from the NiCd
battery.
4) Pull out SRAM from the mainboard.
5) Solder a new SRAM to mainboard. Incorrect position may cause the SRAM damage.
6) Pull out jumper and insert it to the position closer to the NiCd battery.
7) In case that new memory is SRAM 512kB (only Euro - 2000 ALPHA), it is necessary to remove resistor R23 (10K)
and solder resistor 0R to position R19.
8) Replace the top cabinet (see 4.1.).
9) Turn on the ECR.
10)The ECR initialisation will be automatically performed.
11) Execute all the electronic tests.
No. Quantity
1 1
2 1
3 1
3 1
4 1/EX
Euro-2000T Alpha/1000T
EPROM 256kB
SRAM 128kB
Mainboard Euro-1000T
Mainboard Euro-2000T ALPHA
SRAM 512kB
Service manual
Part nam e
© Elcom s.r.o.
Code
ZD 196
ZD 198
SAD 54
SAD 52
ZD 197
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