Revision History; Rev 0, 10/2008 - Harman Kardon HS 650/230 Service Manual

5
harman/kardon
NO. REVISION DATE REV
Mar 20, 2007
1 1.0
D
May 5, 2007
2 1.1
June 5, 2007
1.2
3
C
Jan 31, 2008 1.4
4
B
A
5
4
1. initial version.
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.
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.
1. change R58 from 0R to 1K to improve EMI issue from pick up.
2. R99 68R -> 75R, CE33 10uF->330uF, CE37 -> C249,
to improve CVBS light noise and gain.
3. Exchange the pin order of CN3
4. Add C367, C644 to decrease the ripple voltage of +40V.
4
3

REVISION HISTORY

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. change R385->0R, R205->0R, R206->150R,
R207->0R, in order to fix amp output noise.
8. CN402/CN703/CN704/CN702/CN602 -> 180
degree + pin X-turn.
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).
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).
5. Add Relay K603 to replace FSA2257 to improve
Heaphone THD, but FSA2257 still left, need to
improve.
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
2
HS 350/650DL Service Manual
7. update DSP page, add SN74LVC823APW,
change the Flash to top boot type.
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.
7. Change CE322 ->100UF, add CE343 470UF, to improve
the headphone THD.
Title
HS350 HS650 REVISION HISTORY
Size Document Number
A3 1
Date: Wednesday, March 19, 2008
2
1
D
C
B
A
080131
Rev
1.3
Sheet 4 of 32
1
Page 61 of 89