Special Tool - Casio IT-2000 Service Manual

7.3 Special tool

Special tools are necessary for 8 pin Loop test and 14 pin Loop test.
7.3.1 8 pin loop back connector
Pin No Signal name
1 SD
2 RD
3 RS
4 CS
5 V
OUT
6 GND
7 ER
8 DR
8 pin loop back connector wiring is shown in the left.
2KΩ
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