Field Change Order: 2013 Date of Issue : 24/8/90 Applicable to : Master Compact (0358,000 or ADB10 / ADB20) and Olivetti PC1285 (0358,200 or AIB10) Reason for Issue: Some machines exhibit random changes E²PROM settings due to potential weakness in I²C control protocols. Types Affected: All units. Description of Change: Replace system ROM (IC49~0259,011 Issue 1 or 2) with new system ROM (0258,022 Issue 1). Observe all normal safety, dismantling and reassembly procedures defined in the Service Manual. Claim Procedure: Following completion of the field change order instructions, service engineers should fill out a service report clearly stating the serial no. of the host unit, the FCO no. (above), and claim the FCO credit rate (below) for labour charges. Any replaced components should be wrapped to ensure safe carriage and returned with the service report. Acorn will verify the information and, process the claim for labour charges and issue any replacement components as necessary. Rework Doc. Reference: 2013 FCO Credit Rate: Special Instructions: