Shure HTS5000 Operating and installation instructions

Issue No. 1 Price
$7.50
HOME THEATER SOUND
HTS5000
SURROUND AUDIO PROCESSOR
SERVICE INFORMATION
MODELS: HTS5000, HTS5000E, HTS5000J
Home Theater Sound Division
SHURE BROTHERS INCORPORATED
222 Hartrey Avenue
Evanston, Illinois
60202-3696
Copyright 1967, Shurm 6roth.m lnc.
27M136 (GO AMID
Prlnlbd In U.S.A.
Patent hndlng

DESCRIPTION
+
OUTPUTS TAPE
ear~mrn cry.I-
0
0 0 , =Go
-
The HTS5000 Surround Audio Processor provides a
theater-sound environment in the home. This Home
Theater Sound (HTS) system decodes Dolby1 stereo
sound encoded in video discs, video tape, and broad-
cast television. The HTS5000 provides up to six chan-
nels of audio output: left, center, right, two surround
channels, and a subwoofer. Acra-Vector' decoder cir-
cuitry replicates the directional accuracy of the finest
theater sound equipment. True digltal time delays pro-
'de the same performance,free of distortionandnoise,
s inthe theater. The Acoustic Space Generatorcreates
the same immerslon insound as in the theater, but us-
ing a minimum number of speakers. All these features
help to re-createthe sound field of an original theater
showing. The HTS5000can also produce simulatedsur-
round sound from ordinary stereo, and even from mono
sources.
Three models of the HTS5000 are presently
available: the HTS5000, for 120 Vac,
60 Hz operation;
the HTS5000E, for 220.240 Vac,
5016Q Hz operation; and
the
HTS5000J, for 100 Vac, 50160 Hz operation. All three
models are described inthis document.
A basic HTS Surround Sound installation employs
four loudspeakers and two stereo amplifiers; a com-
plete system uses six loudspeakers and three stereo
amplifiers to reproduce the theater experience. The
systemoperates as follows: ExclusiveAcra-Vector
clr-
cuits enhance the directional accuracy of the repro-
duced sound field. Inthe front, this creates
a spacious
stereo panorama with realistic "motion" effects from
moving sources. In the basic system, dialogue
originates from a phantomcenter channel. However, to
keep the acoustic image properly located regardless of
where the listener sits in the room, the addition of a
center front loudspeaker is recommended.
The surround channel signals are delayed according
toa user.selected digital display setting chosenfor the
particular room environment. Then an Acoustic Space
Generator processes the delayed signal to further
nhancethe perception of spaciousness.
The finishing touch tocompletethe system isanadd-
ed subwoofer. Becausethe film industry uses very low-
frequency audio as an Integral part of the creation of
mood and place. usina a subwoofer relnforces the
theater illusion and intensifies the versimilitude of the
performance. To conveniently add a subwoofer, the
HTS5000 has a subwoofer output containing only low-
frequencyinformation(below80 Hz). The subwooferwill
smoothly extend the response of typical bookshelf or
satellite speakers, or It can be used to augment the
bass output of larger speakers. (The left, center, and
'
right outputs are full-frequency-range and also contain
this low-frequencyinformation.)
The HTSWfront-panel controls and displays in-
clude push-button operating mode selectors: Dolby
Surround, synthesized-surroundstereo or mono, and, by
means of a defeat button, pure stereo or mono. There is
a
alsopush-buttonchoiceof the audio source from elther
Left and Right inputs or Tape Monitor Return inputs.
Rotary knobs on the front adjust the following: input
level, with a five-LED display; input balance, with an
LED for visual determination of correct balance; digital
delaytime tobest suit the particular listeningroom;and
volume andsurround levels.An overriding wired remote
control iets the listener adjust surround and overall
volume levels from the listening position. The remote
also permits muting of the audio outputs. A four-
channel graphic display provides visual demonstration
of the surround characteristics of the input signal.
The HTS5000 rear panel includes left and right audio
inputs; outputs for front left and right and surround left
and right channels;
a separately switched front-center
output jack; and a subwoofer output jack. Tape Monitor
Sendoutputs and Left and Right Return inputs are also
included. These audio input and output jacks are all
phono types. In addition, front- and rear-paneleighth-
inch-diameter phone jacks accommodate the wired
remote control.
The
HTS5000 InstallationlOperator's Manualcontains
specifications, troubleshooting and safetylmain-
, tenance information.
1 1. Uanvfacturedunder licensefrom DolbyLaboratoriesLlcenting Ca-
n poration. Additionally licensed under one or more of the following
' patents: U.S. numbers 3,632,886, 3,746,792, and 3,959,590; Canada
numbers
1,034,603 and 1,037,877. 'Dolby* and the doub1e-D symbol are
trademarks of Dolby bboratories Licensing Corporation
'Patent pending.

SERVICE
This section contains information on replacement
parts, service access, fuse replacement, and complete
equipment checkout. If difficulties in HTS5000 installa-
tion or operation are experienced,the Troubleshooting
Guide in the lnstallationlOperator's Manual should be
consulted.
If that information fails to correct the pro-
blem, the checkout procedure given here can
be per-
formed.
Notethat circuitry informationisonly givenwhere itcan
be of use in field service; most internal adjustments
cannot
be made and some circuit blocks cannot be ser-
viced without factory test equipment.
Voltages inthis equipment are hazardous to life.
No user-serviceableparts inside. Refer ail servic-
ing to qualified service personnel.
ReplacementParts
Parts that are readily available through local elec-
tronic padsdistributors are not shownon the accompa-
nying Parts List. Their values are shown on the Circuit
Diagram. Commercial parts not readily available and
unique parts are shown on the Parts List and may
be
pvdereddirectly from the factory.
'he commercial alternates shown on the Parts Llst
are not necessarily equivalents, but may be used inthe
event that direct factory replacements are not im-
mediately available. To maintain the highest possible
performance and reliability, Shure fgctory replacement
partsshould be used.Whenordering replacement parts,
specify the Shure replacement part number, descrip-
tion, product model number, and serial number.
External Parts
The following parts can be removed and replaced
without disassembling the HTS5000:
Remote Control (A13)
Rotary Knob (MPI-MP5)
Foot (MP6-MP9) .
All five front-panelknobs are either pull-offor setscrew-
retained types and are interchangeable. Setscrew-type
knobs must be unscrewed from
inside the front panel
before removingthe knobs.
ServiceAccess
Disconnect the HTS5000 from its ac power source.
Remove two cover-securing screws from each side
panel. Slide the cover back toward the rear of the unit
and upward to remove.
Fuse Replacement
To replace the fuse or fuses inthe HTS5000, discon-
nectthe linecordfromthe ac sourceandremovethe top
cover as described above. Locate the defective fuse on
3 printed circuit board adjacent to the power
..ansformer, and replace with a fuse of identical size
and value (see table). Note that all fuses are slow-blow
(time lag) types.
Oprmtlon at
3AG, AGC
0.764 250V Tlf50mAR50V
1 .04 mv
375 mA, 125V
5060 Hz 1 .Oq 250V
'Also conlnins non-replaceable thermal cutout Inside power
transformer.
-
- --
Test Conditions
The HTS5000 test procedures that follow are based
on the following test conditions:'
Ac power source:
120 Vac, &I Hz
Output Level Trimmers (bottom of chassis): full
clockwise
Switchlcontrol positions:
Center Inlout switch: In
Volume control (remotecontrol removed):
Maximum
clockw wise^
Surround ~eielcontrol:' Maximum (clockwise)
Digital Delay (rns) switch:
16 milliseconds
lnput Balance control: Set to null position (LED
above control lit)with input signal appliedto left
and right channels
Tape Monitor switch: Out (off)
SynthesizedSurround Defeat switch: Out (off)
'Mcde swltches are set as specified depending on measurement;
lnput
Level controlis set per the Preliminary Checkouf procedure.
Test signals are applied only to the channels
specified in each section of the test procedures. The
voltages listed in each section are ac mVrms unless
otherwise listed. No significant
dc potential (>50 mV)
should be present at any audio output jack.
When feeding audio test signals to the HTS5000, do
not useexcessivedrive levels. Withthe lnput Levelcon-
trol set to maximum (clockwise), distortion will appear
with approximately 0.3V at the input terminals.
Test Equipment
Use a high-quality audio generator to supply the
signals to the HTSWinput jacks. The distortion con-
tribution of the His5000is negligible; ifa low-distortion
audio signal is used for testing, little distortion will
be
found at the test point signals.
Ac signal voltages should
be measuredwith a high-
impedanceac voltmeter (r 100-kilohminput impedance).
Dc voltages can be measured with
a voltohmmeter
(2 100-kilohminput impedance).
Prellmlnary Checkout
To perform all testing, the unit must
be factory-
calibrated and warmed up (at least 5 minutes).
After warmup, apply a
100 mV, 1 kHz signal to both
channels. With the unit in Dolbymode, adjust the lnput
Levelcontrol for
500 mVat the center output. Adjust the
lnput Balance control for minimum output at the left
surround output. Under these conditions, the unit
shouldprovidethe voltages listedinthe following table
within
&2 dB.

lnput Block (A2)
Mode Switch: Dolby Surround
Mode Switch: Stereo
o*tDut
Lr I I
Center
Right
Left Surround
Right Surround
135 &lW mV Inputto:
270 rnV
-- Center <5 rn~
Right r5 rnV 27'0 rnV 270 rnv
Left Surround XY) mV 500 rnV <I0 rnV
Right Sunound 500 rnV 500 mV c10 rnV
Mode Switch: Mono
Before Preliminary Checkout inthe mono mode, adjust
the Mono Enhance Adjust control (located on the
chassis bottom). With the unit inthe mono mode and a
100 mV, 1 kHz signal applied to both channels, adjust
the Mono EnhanceAdjust control for
300 mV at the left
output.
1 kHq 100 rnV Input to:
Subwoofer Output
Properoperation of the subwooferoutput can
be veri-
fied by measuring the following voltages.
m ch
53 mV
500 rnV
50 rnV
<iO rnV
<lo rnv
~.n clr
380 rnV
<20 rnV
c5 mV
<20 rnV
<M mV
?
RW ch
<5 rnV
<20 rnV
380 rnV
<20 rnV
<20 rnV
Outplt
1-8 ft
Center
Right
I eft Surround
ht Surround
If the above vo1tage.s are measured, the HTS5000 Is
operating correctly. If any voltages are outside the
specified limits, the following procedure wlll aid In
isolating the major circuit block that is causing the pre
blem. Any circuit block(visible on the printed circuit as
anoutlinedblock of components),with the exception of
the Directional Enhancement
(A6), Direction Sensing
(A7) and Digital Delay (A12) Blocks, can be serviced
using conventional circuit troubleshooting techniques.
1 kHz, 100 rnV input to both chanrmls
300 rnV
390 rnV
225 rnV
280 rnV
280 rnV
Mode Switch
Mono
Dolby
Checkout Procedure(cover removad)
Power Supply Block (A I I)
1 kH& 100 rnV Input to both chanmls
180 rnV
270 rnV
Component mersursd(to ~tound) Merrunnunt
Cathode of dlods DllD5
+ 15 Vdc
Anode of diode Dl100
-15 Vdc
Cathode of diode Dl110
+ 5 Vdc
Use extreme care when measuringvoltages near
the 120 Vac power supply fuses (F1100, F1101,
F1102).
Mode switch:
Dolby. Proper operation of the lnput
Block is verified by the following test point TP2A and
TP2B voltages.
- --
Directional Enhancement (A6) and Direction Sensing
(A7) Blocks
Proper operation of the Directional Enhancement and
DirectionSensing-Blockswas verified inthe Preliminary
Checkout procedure In the Dolby mode.
IMPORTANT: If incorrect voltages were obtained in
the Preliminary Checkout, the unit must be returned to
Shure Brothers Service Department. The Directional
Enhancement (A6) and Direction Sensing (A7) Blocks
are not field-serviceable.
DigitalDelayBlock
(A72)
Proper operation of the Digital Delay Block was
verified inthe Preliminary Checkout procedure.IMPOR-
TANT: If incorrect voltages were obtained in the
Preliminary Checkout, the unit must be returned to
Shure Brothers Service Department. The Digital Delay
(A12) Block is notfield-serviceable.
Dolby Noise Reduction Block
(A3)
Proper operation of the Dolby Noise Reduction Block
Isverifiedby the followingvoltages at Test Point TP3A.
Mode switch: Dolby Surround
lnput to: LeftChannel
Tost Pdnt
TP2A
TP2 B
lnput Frequency lnput
bvml
700 rnV
Output LevelControl and RemoteBlock (A9, AID)
Proper operation of the Output Level Control and
RemoteBlocks was verified inthe Preliminary Checkout
procedureinall modes.
1 kHr. 100 mV input to:
RemoteControl Voltage
The Volume (R1016) and Surround Level (R1014)con-
trols can be checked by turning them both to their
minimum (counterclockwise) positions and measuring
the following voltages with the wired remote control
disconnected from the HTS5000.
Test Point TPlOA . .... . .. . . . .. ..... . ...... 4 Vdc
Potentiometer R1014(ungroundedside)
... . . . 4 Vdc
WiredRemote Control
Unit
Lett ChanmI
400 rnv
400 rnV
Resistance readings made at the miniature stereo
phone plug of the HTSWremote control unit will in-
dicate proper operation.
Both Cbnrwls
BC)O mV
<20 rnV
Measurernont
Sleew lo ring
Sleeve to tlp
(Muto on)
Sleeve to tlp
(Mule oft)
SwltcNContrd
Mute
Surround Level
Surround Lewl
Volume Level
Surround kei
Volume hl
Surround Lewl
Volume Lswl
Volume hl
!Setting
OnorOff
Minimum .
Maxlrnum
Max-Mln
Max-Min
Mu-Mln
Max-Mln
Minlrnum
Maxlrnum
Roedlng
800-120[X,
8M21XJOQ
>250
No chanw
No chn~
lKO100Q
No chmw
850.200
c250

PARTS LIST
layouts, including the basic HTS5000, HTS5000E, and
HTS5000J power supplies.
The following pages contain
a replacement parts list
tor the HTS5000. Part numbers not shown on the parts Note that circuit information on the non-field-
list(except for Directional Enhancement, DirectionSen- serviceable Directional Enhancement, Direction Sens-
sing, and Digital Delay Block parts which are also not Ing, and Digital Delay Blocks
(A6, A7 and A12) is not in-
listed) are readily available through local electronics cluded.
parts suppliers. Inthese instances, the circuit diagram
shows only the reference designation and value of the
standard parts.
SERVICE ILLUSTRATIONS
Following the parts list are an His5000 block
diagram, and circuit diagrams and printedcircuit board
Power Supply
(All) parts shown on the circuit
diagram with
a A are critical and must be re
placed only with identical parts as specified by
Shure Brothers.

REPLACEMENT PARTS LIST
Reference
Deslgnatlon
A13
C202,C205
C301,W05-C306
c303,d312
W09
C400-C407
C1100,C1106,
ClllO '
C1102,C1107,
Cllll
D416D42U
D500D503
M04
0800
W12,W14
D1100-Dl110
F1100
FllW
FllO1
FllOl
J200
J201
J202
JSOD,J1OOO
L1
MPI-MPS
MPG-MP9
QB00-(2801
R107, R309
R211
Description
Remote Control Assembly
Capacitor, Electrolytic, 22,rF, 6.3V
Capacitor, Electrolytic, 1rF, 50V
Capacltor, Electrolytic, 10pF, 16V
Capacitor, Electrolytic, 220 rF, 25V
Capacitor, Electrolytic, 22
rF, 25V
Capacitor, Electrolytic, 10rF, 35V
Capacitor, Electrolytic, 1033
pF, 35V
Light-Emltting Diode, Clear
Light-Emittlng Diode, Green
Light-Emitting Diode, Red
Llght-Emitting Diode, Yellow
Zener Diode, 5.6V
Diode, Sllicon Rectifier, lWV, l/2A
Fuse, SIo-Blo, 3AG, 0.34 250V
(HTS5000)
Fuse, Time Delay, 375 mA, 125V
(HTS5000J)
Fuse, Time Lag, 0.16A, 250V
(HTS5000E)
Fuse, Sl~Blo,Pigtail, 2AG, lA, 250V
(HTS5OOOE, HTSXWJ)
Phono Jack, Dual
Phono Jack, 4-Position
Phono Jack, &Position
PhoneJack, Miniature, Stereo
Ferrite BalunCore (HTSW,
HTssooar)
Knob, Front Panel
Feet
Transistor, NPN
Potentiometer,
Trim, 1%
Potentiometer, Dual, lOOk
Shure Part Number1
Cornrnerclal Alternate
Shure 90A8248
Shure 86V628; Mallory TAC226KOlOP05
Shure 86S628; Cornell-Dubiiier NLW1-50
Shure 86Y628; Cornell-Dubiiier
NLW10-16
Shure 86x629; Nichicon 1E220MAA
Shure 86AB628; Mallory
TAC225K025P02
Shure 86AA628; Mallory CTL-
106M050PlA
Shure W629; Sprague 503D108F050SJ
Shure 86A8411
Shure 86A8410
Shure 86B6410
Shure 86CBa10
Shure 86AB409; Motorola 1N5232A
Shure 86A404; Motorola IN4002
Shure 805159; Littelfuse Ser. 313000
Shure 86A8059; San-0SDLC
Shure 80D380; Schurter
034.3109
Shure 80AB052; Llttelfuse Ser. 230301
Shure HA8127
Shure HA8128
Shure HA8129
Shure 95A8130
Shure 80A8051
Shure 31A8010
Shure 66AB002
Shure 86A350; Motorola2N5210
Shure 46B084
Shure 46A8019

REPLACEMENT PARTS LIST
Reference
Designation
I
Shure Part Number1
Description Commercial Alternate
Potentiometer, 10k I Shure 4688019
Potentiometer,
I k ( Shure 4688013
Potentiometer, Trim, 50k
I Shure4688014
Switch, Sang,Push-Button I Shure 95A81X); Alps SUF-SO01
Switch, ZGang, PushButton
I
Shure 95A8121; Alps SPUF24
Transformer, Power (HTS5000)
I ShUre 51L8029
Transformer, Power (HTS5000E)
I Shure 51A8027
Transformer, Power (HTSW)
I Shure 51AB028
IntegratedCircult, JFET input Op Amp
I
Shure 86888Yli; TI TLO74AN
IntegratedCircuit, Dual Op Amp I Shure 86A8llA; Raytheon RC4559NB
integrated Circuit, Dolby Noise
ReductionCircuit
lnteprated Circuit, Quad
Op Amp I Shure 86A808A; Raytheon RU156DB
Shure 86A6856A; Signetics NEM5N,
NE650N
IntegratedCircuit, Dual Comparator
integrated Circuit,
Quad Comparator
Voltage ~e~ulator;
- 15V
Shure 86A8819A;TI LM393P
Shure 86AB06A; Raytheon LM339DB
Shure 86A810A; Motorola MC7Q15CT
U1102 I Voltage Regulator, +5V
I
Shure 86AWA; Motorola MC7B05CT
UllOl
Line Cord and Plug, 1.8m (6 ft)
(HTS-1
Line Cord (without plug, with Ll), l.9m
(6 ft 4 in.) (HTS5000E)
Voltage Regulator, + 15V
Shure BFQ4
Shure 90A8289
Shure 86AS09A; Motorola MC7815CT
I
Line Cord and Plug, 2m (6 ft 6 in.)
I
Shure 9588161
(HTS500RI)
W2 I Cable, Stereo Pair I Shure 95A8132

REPLACEMENT PARTS LIST
REMOTECONTROLASSEMBLY A13
Shure Part Number1
Commercial Alternate
Rohm SLR-34UR3
Shure =A8078
Shure 65A807Q
Shure 65BB076
Shure SA80n
RadioShack 274-284; Shure 95A1000
Shure 46A8020
Shure 46W
Shure 55AB041; Alps SSTOl2
Shure WAS251
Reference
Designation
Dl01
MP1
MP2-M P3
M P4
M P5
Pl
R101-RIM
R103
SlOl
W1
Description
Llght-Emitting Diode, Red
Button, Swltch (Mute)
Button, Variable Resistor(Volume,
Surround)
Case, Front
Case, Back
Connector, Miniature Stereo Phone
Plug
Resistor,
Variable, lk
Potenticmeter, Unear Taper, SOk
Switch, Slide, SPST
Cable and Plug Assembly, 6.lm
(M ft)

NOTES TO SERVICE ILLUSTRATIONS
The notes below apply to the partial circuit diagrams
and printed circuit board layouts shown on the follow-
ing pages. As previously stated, information Is not in-
cluded on the Directional Enhancement Block (A6),
Direction Sensing Block (AT), and Digital Delay Block
(A12). In addition, only partial information is given on
the Output LevelControl& Remote Block(A9, A10). This
is done because the equipment required for
troubleshooting, adjusting and repairing these circuits
is not available outside Shure's factory.
Remember that
all Internal adjustments are con-
sidered factory-serviceableonly. Field repair should
be
limited to replacing known defective parts, repairing
defective connections, etc. Attempting to calibrate the
HTS5000 in the field without proper equipment (in-
cluding computer setup) can result in serious perfor-
mance problems.
1. All resistors are 1/4W,
5% unless otherwise
specified.
2. All capacitors in microfarads and
50 volts or more
unless otherwise specified. Electrolytic capacitors
shown in microfarads
X volts.
3. The following symbols denote:
PC Board
I Chassis
Ground
1 Ground
4. The printed circuit boardissubdivided intosections
where the first two digits of the part number
describe its"block."
A1 - Mode Switching Block
A2 lnput Block
A3
- Dolby Noise Reduction Block
A4 Directional Display Block
A5 lnput Level Display Block
A6
- DirectionalEnhancement Block
(drawings not supplied)
A7 Direction SensingBlock (drawings not supplied)
A8
- lnput Balance Display Block
A9,10 - Output Level Control & Remote Block
(partialdrawings supplied)
All - Power Supply Block*
A12
- Digital Delay Block (drawings not supplied)
A13 - Remote Control Assembly
- -
'Separate drawings prwlded for the HTSS033. HTS5000E
HTS5000J.
5. To eliminate risk of fire or electrical shock, all com-
ponents in the power supply Indicated
withA are critical components and must be
replaced only with identical parts as specified by
Shure Brothers Inc.
and

MODE SWITCHING BLOCK A1

INPUT BLOCK A2

INPUT BLOCK A2

DOLBY NOISE REDUCTION BLOCK A3
TO SlOO
TO SlOl

DOLBY NOISE REDUCTION BLOCK A3

DIRECTIONAL DISPLAY BLOCK A4

INPUT LEVEL DISPLAY BLOCK A5

INPUT LEVEL DISPLAY.BLOCK A5