Harman Kardon DVD 22, Руководство по обслуживанию, Страница: 59 / 61

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Code
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Rev Date
REV Revision History
June 18, 2003 1.00
Initial Release
1.10 July 10, 2003
separate ground again, modify some errors, move the 3370 so that short the video&audio path ,
1.20 July 20, 2003
connect the AGND&DGND of the dac with R7,
change the footprint of C44 C45 C46 C48 C50 C51,
add R407 R408 R409 R529 R530 for VIDEO,
swap the pin1&2 of U2,
add R505 R506 R508 R431,change the value of R504
upgrade page 1,
add front panel page,
12V&-12V from SMPS to MAIN BOARD,
4
delete NET-LED to front panel,
add R433(America) or R432(Europe) to set software
dynatron BC858 was changed by 8550 in mutelogic
add BLOCK DIAGRAM page
4 Aug 9, 2003 1.30 modify the schematic according to outstanding issues list Amlogic_03_08_06
debug the front panel and modify SCHEMATIC&PCB
remove the LM9022 from front panel to main board
change R431 from 10K to 2.7K,R46 from 33K to 82K,2R15 from 1K to 150
changed DAC PCM1742KE by WM8728
add +12V/-12V regulater (TO-92 type) on mainboard
change R728 R729 from 0603 type to 0805
1.40
5
Sep 1, 2003
change R829 from 22K to 3.9K,C831 from 22p to 183.it help to improve read CD ability.
2.0
DVD22 REVISION HISTORY
A4
13 14 Thursday, March 25, 2004
Title
Size Document Number Rev
Date: Sheet of
Harman Kardon, Northridge, California 91329, USA
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