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Great Manual! It contains all the wiring schematics and mechanical exploded views that are essential for service and repair. I was surprised I even found this for such an old machine. Only wish I knew of this site many years ago.
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Great manual very clear copied. You are making an incredible job. I appreciate a lot the rapidity and your efficiency. Thanks a lot
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Good pdf of the service manual for this unit. Includes disassembly instructions, full schematics, board layouts, parts lists and diagnostic information. Some information is in the pdf twice (single pages, and split pages), but that could be how it was originally generated by panasonic, or perhaps the idea is to make it eaiser to put onto 8.5 x 11" pages.
Information was exactly what I needed. Delivery was overnight (less than 12 hours) and I was happy with the process.
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5 STARS for FAST DELIVERY, BEST PRICES and QUALITY PRODUCT. Item was exactly as described with superb resolution. Will definitely source all my future requirements from this website. Thanks a lot owner-manual.com!
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OEM manual provided all schematics, board layouts and component specs necessary to facilitate unit maintenance. All pages were clear and readable.
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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