HARMAN KARDON BU80
Manual de Servicio

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