Harman Kardon HS 200, Руководство по обслуживанию

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REVISION DATE REV REVISION HISTORY NO.
1 Aug 12, 2006
1. The controlling on -12V was changed to by USB5V
from by S-T, because the driving capability of S-T wasn't
enough, this made leds abnormal
2. Change R533 from 1K to 3.6K
3. Change C516 from 104 to 224/25V
4. Change R567 from 56K to 27K
5. Add R590 10K and C535 474/50V
6. Change FB501 to color coded inductance 4.7UH
7. Add R532 10K between GND and U511, preventing
unexpected actions on USB5V
8. Add C536 102/25V
9. Change the value of T501 to 400UH
1. Add a discharge circuit of +34V power
2. Connect USB5V to CN504.6 to r3.3V, connect
A+5V to CN504.10 to replace USB5V, because of the
change of power supply 3.3V on main board
3. Delete D518, and change U510 from BA033BCO
to AV1117-3.3
Sep 22, 2006
1. Change CY501, CY502 from 471/400V to 102/400V
2. Change CX501, CY502 from 334/250V to 224/400V
3. Change LF501 from LCL-203A to LCL-303A, change
LF502 from 20mH to LCL-303A and change L502, L507
from 47uH to L0620-050
4. Change C502 from 474/630VDC to 105/450VDC
6. ADD beads L509, L510 0.085K
5. Change CY505 from 222/250V to 471/250V
7. Delete R588, change R572 from to 0.5/3W
Nov 11, 2006
1. Add R518 620K-1%, change R515 R516 from 1M-1%
to 680K-1%
2. Add R573 3.3M-5%, change R564 R565 from 4.7M-5%
to 3M-5% 3. Add R574 3.3M-5%, change R562 R563 from 4.7M-5%
to 3M-5%
Dec 12, 2006
4. Reverse net lable of CN504 on PCB
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3521C 2.1
HS200 SMPS REV HISTORY 061227
A3
21 21 Thursday, January 04, 2007
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