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Quick site processing. A complete and very useful manual with all details. Thank you!
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Quick service response. A useful and very rare service manual with all details. I recomend this service.
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I ordered this manual sometime in the afternoon and I received it on my e-mail the same evening.
This is a fantastically good and properly scanned copy of the original manual. All pages are of the same scale and they overlap each other. It means that you can print the manual and easily make it as a convenient paper manual.
The content of the manual is fantastic. Alignment descriptions, PCB layouts and elementary diagrams are explicit and precise. I immediately found what I was looking for. Thanks to this manual and Owner-Manuals.com my amplifier is alive again. Many thanx indded!
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The manual was well-scanned and easy to read. As an added bonus, the Operator's Manual was bundled with the Service Manual!
I'd definitely use owner-manuals.com again.
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Finally, i found one website, where i can download this service manual , and fix my hifi. The service manual is very good, and easy to download and to print.
KAC-6403
BLOCK DIAGRAM
AUDIO UNIT (X09-8542-70)
J1 L LINE IN A IC2 R ISOLATION AMPLIFIER IC2 ISOLATION AMPLIFIER VR1 IC9 +1 Ach INPUT GAIN CONT. C151,153,R165,167 HPF 80Hz 12dB/OCT IC7 S2 Q101,102, 201,202 Q103-114, 119-126 POWER AMPLIFIER Q103-114, 119-126 POWER AMPLIFIER MUTE IC4 L LINE IN B IC4 R ISOLATION AMPLIFIER S1 ISOLATION AMPLIFIER S1 VR2 S3 Bch INPUT GAIN CONT. S3 IC5 LPF+10dB 80Hz 12dB/OCT S3 IC6 +1 -3dB ATT IC5 S3 -1 -3dB ATT A-AB J2 Q3,4 15V AVR L2 DC/DC CONVERTER Q605 P.CON CIRCUIT TH1 THERMAL PROTECTION +6dB 0dB IC13 OVER VOLTAGE PROTECTION +29.5dB BATTERY P.CON Q115-118,215-218 DC DETECT & OVER ROAD PROTECTION Q203-214, 219-226 POWER AMPLIFIER Q203-214, 219-226 POWER AMPLIFIER L SPEAKER OUT B R J9 L SPEAKER OUT A R
+1 -3dB ATT IC7
IC9 -1
C152,154,R166,168 HPF 80Hz 12dB/OCT
S2
+1 -3dB ATT
SPEAKER INPUT
COMPONENTS DESCRIPTION
� AUDIO UNIT (X09-8542-70)
Ref. No IC1 IC2 IC3 IC4 IC5 IC6 IC7 IC9 IC13 Q3,4 Q5,6 Q7~10 Application / Function Buffer AMP Isolation AMP Buffer AMP Isolation AMP LPF -3dB ATT Buffer AMP Phase inverter DC/DC converter Constant voltage power supply DC/DC converter DC/DC converter Operation / Condition / Compatibility Amplifies 6dB by decreasing impedance. Decreases common mode noise. Amplifies 6dB by decreasing impedance. Decreases common mode noise. B-Rch side is phase inverter. B-Lch side is buffer amplifier. Decreases impedance. A-Lch side is buffer amplifier. Oscillates and controls DC/DC converter. Controls ±15V constant voltage. Switching FET. Drives Q5�s and Q6�s gates.
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