Harman Kardon HS 650/230, Service Manual

Page: 61 / 89

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REVISION DATE REV REVISION HISTORY NO.
2
May 5, 2007
1. initial version.
1.1
1
Mar 20, 2007
1.0
1.2
June 5, 2007
3
1. change U204 from TPS78601DCQR to BA00HC5FP.
2. add pull-up R11 for TUNER_CE.
3. change I2C2 -> I2C1 on CN4, ASIC_TEST
-> SCL2 and EXTA16/ASIC -> SDA2 on CN3.
4. add MUTE_AMP circuit for amplifier board.
5. change ADC from PORTB to PORTA of AK3683.
6. pin2 of U18 change to float in order to improve the
playability.
7. update DSP page, add SN74LVC823APW,
change the Flash to top boot type.
1. change R240 R241 to N/A, install R655 CE621.
2. improve iPod noise issue, related components: Q310,
3R007, 3R008, 3R009, 3R010, 3R012, 3R013, FB314, C308,
C309, C339, C340, C341, C342, C359, C360, CE345, D308,
R307, R309, R311, R312, R318, R340, R348, R366, R368,
R370, R372, R374, R376, R386, R387, R388.
3. change R393 in order to fix analog input no sound issue.
4. change DSP Flash from top boot type to bottom boot type.
5. change MUTE_DSP to DSP_MUTE on mainboard,
change front panel MCU_MUTE to FPMCU_MUTE.
6. add FB10/FB15 on I2C which go to CPLD, add
FB17(0 ohm)/FB19(0 ohm) on I2C which go to CN8,
they are for avoiding misoperation.
7. change R385->0R, R205->0R, R206->150R,
R207->0R, in order to fix amp output noise.
9. the power supply for AV board was changed to
come from mainboard, that can canel one flat cable
which close to the high-voltage heatsink on SMPS
board, CN7/CN303(12pin-1.0mm -> 18pin-1.25mm),
CN6(12pin-1.25mm -> 16pin-1.25mm).
8. CN402/CN703/CN704/CN702/CN602 -> 180
pin X-turn.
10. change MUTE LOGIC CIRCUIT on mainboard,
change CN4(14pin-1.0mm -> 16pin-1.0mm).
11. add mute circuit on speaker board, change
CN901(5pin-1.0mm -> 8pin-1.0mm).
12. amplifier board: change subwoofer mute circuit, add discharge
circuit for fixing the noise cause by plug out AC cord, change
CN404(5pin-1.0mm -> 8pin-1.0mm), CN401(14pin-1.0mm ->
16pin-1.0mm).
13. add R626/CE614 to fix random DC supply when power on,
change R619 from 1.5k to 10R and R621 to N/A.
14. change MUTE_HP_SUB to MUTE_HP on AV board.
15. add mute circuit on speaker board.
4. Add C367, C644 to decrease the ripple voltage of +40V.
2. R99 68R -> 75R, CE33 10uF->330uF, CE37 -> C249,
to improve CVBS light noise and gain.
1. change R58 from 0R to 1K to improve EMI issue from pick up. 7. Change CE322 ->100UF, add CE343 470UF, to improve
the headphone THD.
6. Change the coxial 2 from C, D gate to E, F gate, add C324
to improve the crosstalk issue bettween coxial 1 and coxial 2. 3. Exchange the pin order of CN3
5. Add Relay K603 to replace FSA2257 to improve
Heaphone THD, but FSA2257 still left, need to
improve.
Jan 31, 2008 1.4 4
1 1.3
HS350 HS650 REVISION HISTORY 080131
A3
4 32 Wednesday, March 19, 2008
Title
Size Document Number Rev
Date: Sheet of
harman/kardon HS 350/650DL Service Manual
Page 61 of 89