B
Verify that +40 volts is present on CN7 main control board (Refer to Appendix A of the Service
Handbook).
Has the problem been resolved?
Yes End of procedure.
No Replace the carriage cable.
Has the problem been resolved?
Yes End of procedure.
No Replace the ribbon feed mechanism
Has the problem been resolved?
Yes End of procedure.
No Replace the PROM (O5CA)
Has the problem been resolved?
Yes End of procedure.
No Contact Technical Support.
Microline 520/521 Service Handbook 4 - 27 Failure Analysis
P/N 59257803
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