09/03
2-690
DC 3535/2240/1632, WC M24
121-333, 121-334
Initial issue
Status Indicator RAPs
Figure 1 121-333 RAP Circuit Diagram
121-334 Foreign Interface Login Fail
The enquiry result of the login information was an error at WAKE UP ANSWER.
Procedure
CAUTION
Do not attempt to troubleshoot this circuit by jumpering the Transmit Data or Receive Data
lines (P343 pins 4 ~ 6 on the ESS PWB). This will destroy the serial port on the ESS PWB.
NOTE: Refer to Figure 1 (Circuit Diagram).
Switch the power off, then on. The problem continues.
YN
Check for loose connections or dirty contacts between the ESS PWB and the Foreign
Interface, and between the FI and the attached device.
Switch off the power. Disconnect the device from the FI. Connect a jumper from pin 1 to pin 3
on J940 on the Foreign Interface. Switch on the power. The fault code is still present.
YN
Repair or replace the Foreign Device.
Reinstall the ESS software.
If the problem continues, replace the Foreign Interface (PL 10.3)
If the problem continues, replace the ESS PWB (PL 13.1).
Figure 1 121-334 RAP Circuit Diagram
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