This creates a voltage much greater than the standard rails, but with low regulation and high ripple.Ī65, A75 & P75 Service Guide Fault diagnostics Fault No power Stuck in protection Intermittent audio on one channel Fails to respond to commands Volume control rubs on front panel Audio crackles on o/p Action Check mains fuse Check transformer connections Check power supply rails Check power supply rails Check protection circuit voltages Check for dry joints on o/p devices Check for dry joints around o/p devices Check supply to remote circuit Check IC Z900 Check remote flex foil cable Check for dry join In the other cycle the charge on C304,305 is pumped into C310,311 respectively.
Arcam a65 plus plus#
Contents List ! Contents list ! Circuit description ! Service guide ! Circuit diagrams ! Component overlays ! Circuit board parts list ! General assembly parts listĪ65/75/75P Plus Circuit Description PSU In order get the output devices to turn fully on and achieve the greatest efficiency, an auxiliary rail is formed from a charge pump driven by the main AC outputs from the transformer.
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