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Even if the PDF is a scan, I can read the information I need.
The price is affordable and the service (mail sending) is very fast.
Thanks ! Regards. William (Fan of Kenwood)
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Very good quality original datasheet!I like this amazing website!!!!!!
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Excellent just what I needed to replace the electrolytic caps and make this old gem a beauty again. Was as scan of the original photocopied service manual.
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It was helpful to get schematic with waveforms in important points and lot of service information. Manual is good quality, fast delivered. Of course it is hardcopy of paper one with all its disadvantages.
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I want to give you a real heads-up for your desire to enable such people as I to acquire the information I need to maintain the older types of equipment such as this Akai HXA351W. You do a swell job with all the processes you have to perform so I can have a legible, thus usable
document which does not send me crazy trying to figure out the blurry text of a bad copy.
Very well done, Thomas.
Amplifier/Subwoofer
BU-80/BU-80EHTS-10
BU-80/HTS-10 INTEGRATED CIRCUIT/TRANSISTORS DIAGRAM
S53AM/S64AMI - Power Amp module SAFETY PART BU-80 and HTS-10 rev �A, B� ONL Y
+6V 15 16 V+ 17 18 O/P 19 20 V21 22 +15V SD FR I/P GND -15V 23 24 25 26 27 28 1 2 3 4 5 6 7 8 9 10 11 12 13 14 +15V SD FR I/P GND -15V
If the new Amp Module has larger mounting hole(s) in the case, and the stock screws no longer will fit, and screws of the proper type cannot be obtained locally order:
GND S/D
+6V
NOTE: THE FOLLOWING PROCEDURES MUST BE FOLLOWED WHEN INSTALLING NEW AMP MODULES: FAILURE TO FOLLOW ONE OR MORE OF THESE STEPS MAY RESULT IN THE INSTANT DESTRUCTION OF THE MODULE WHEN POWERED UP.
00228
LIMIT 6V
V+
O/P
1) Align white indent marker on Amp Module with indent marker on main PCB; alternately position of label on the top of the module; incorrectly replacing the Module 1800 in the PCB slot will result in its destruction. 2) All AC powered test instruments (meters, oscilloscopes, etc.) must have a floating ground, i.e. be connected to an isolation transformer. 3) Align and position the Amp Module before soldering. 4) Attach the amp Module with the mounting screws before soldering or powering up. 5) Use only rosin-core or non-acid core solder; thoroughly de-flux the surfaces after soldering.
+15V VV-
V-
(2) part# 60301S (screws) (2) part# 60301N (nuts) QUAD OP AMP, LM324, TL074 U1, IC101 BU-80E & HTS-10 rev �C� ONLY
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
TRANS, NPN MPS A13 (Darl) Q1
3 COLLECTOR 2 BASE 1 EMITTER
CN101
MOSFET TRANS IRF530 Q2, 3
TRANS, PNP, 2SA1015 Q101, 104, 105
TRANS, NPN, KSP113 2SC1815 Q102, 103
IC 74HC14N HEX SCHMITT TRIGGER INVERTER U2, 3
00370
V+
V+
V+
O/P
PWR MODULE
V-
IN
-15V
FB
JFET DUAL OPAMP LF353N U1
VCC 14
1. DRAIN 2. GATE 3. SOURCE
A6 13
Y6 12
A5 11
Y6 10
A4 9
Y4 8
OUT1
1 2 3 4
8 7 6 5
V
CC
IN1 (�)
OUT2
IN1 (+)
IN2 (�)
TRANS, PNP, 2N3906 MPS A56 Q2, 4, 5
TRANS, NPN, 2N5551 2N3904 Q1, 3
VEE
IN2 (+)
1 A1
1 2 3
2 3 Y1 A2
4 5 Y2 A3
6 7 Y3 GND
24
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