Table of Contents
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Table of Contents
Related Manuals for Arcam ALPHA
Summary of Contents for Arcam ALPHA
- Page 1 ARCAM ALPHA 5 CD PLAYER SERVICE MANUAL...
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Page 3: Table Of Contents
ALPHA 5 CD SERVICE MANUAL ALPHA 5 CD PLAYER SERVICE MANUAL Issue 1 Serial No. 30000 Paul Newton/Andy Howe August '93 Arcam Drawing No. H04/0022 CONTENTS CIRCUIT DESCRIPTION Audio Board ......................2 Mono Board ..................... 2 Photo diode signal & Radial Error Processors .................2 Microcontroller &... -
Page 5: Circuit Description
ALPHA 5 CD SERVICE MANUAL CIRCUIT DESCRIPTI ON Audio Board The audio board contains the digital filter, DAC, audio output stages and associated power supplies. The required signals from the main board are passed to the audio board via the 18 way connector. -
Page 7: Power Supply
ALPHA 5 CD SERVICE MANUAL Si/RD: On/off control for the focus servo system. This line is continuously made low by the SERVO-uP during the stop condition. At starting up, the SERVO-uP forces this line in a high-Z state. In this case the focus servo system is enabled. -
Page 8: Disassembly For Servicing
same winding are regulated by Z401, providing the - 20V rail required by the fluorescent display. There is an additional winding that powers the filament on the display via pass transistor Q403. Pressing the front panel 'Display' button toggles flip-flop Z405, switching Q403 (and therefore the display) on and off. -
Page 9: Change Of Mains Voltage
The Alpha 5 can be set for use on 230v or 115v mains supplies. There are 2 mains fuseholders in the unit - one marked 230v & the other 115v and the fuseholder with the fuse fitted to it determines the working voltage. -
Page 10: List Of Diagrams
DISPLAY BOARD...