_ DEC-O-LOG for H7862 _ DOL, H7862-00001, Power Supplies FEB 83 PROBLEM: Unable to adequately track the option revision history. CORRECTION: Add the revison matrix drawing to H7862 documentation. IN-PLANT EFFECTIVITY: Document change only. _ DOL, H7862-00002, Power Supplies OCT 83 PROBLEM: Power Supplies cannot be used in all applications. CORRECTION: Modify H7862 to permanently set Voltage Select Switch for the 120 Volt operation. Change the labeling accordingly and create a new Variation B. IN-PLANT EFFECTIVITY: Apr 83 FIELD EFFECTIVITY: Exchange all Revision "A" or "B" H7862 Power Supplies used in the PC300's in 220 Volt Applications with a H7862 Power Supply at Revision "C" or later at the next service call. The minimum acceptable Revision of the H7862 in spares stock is Revison "C". QUICK CHECK: Presence of a Power supply Voltage label that is marked Revision "C" or later. The DEC on-site labor charge will be the time required to install and test the FCO at the then current hourly rate. FCO KIT ORDERING: EQ-01230-01: FCO, PARTS FA-04498-01: FCO only