Clarion EQS755 Repair manual

2
EQS755

Contents
1.
FEATURES ...••.•••.•.•••.•.••••.•.••.•.•..•.•..•....•........•.....•..•.••.•••••.•••••••••••.••.•••••.•.•••••••.•••••••• 4
2. PRECAUTIONS ..•....••.•...••.••.•.....••.....•.••...•..•...•.•....•...•..................••....••.••.••••.•.•.•.•••• 4
Installation ................................................
·
................................................................. 4
3. CONTROLS.•••.•••.•..•.••.••..•...•.••..•.••..•.•....•..........•...........•...••••.••....•.....••........••....•.....• 5
4. OPERATIONS
····························~··············································································
6
Setting system volume .............................................................................................. 6
Adjusting the controls ·................................................................................................ 6
Setting the low-pass frequ-ency .......................................
:.........................
·...........
-
..... 6
Connecting an MP3 player
or
video unit ................................................................... 6
Using the front panel 3.5mm input ............................................................................. 7
Care and maintenance .................................................................................
~
............ 7
5. INSTALLATION
AND
WIRING ••••...•.•••.•..•..••••.....•..•••...•.••.••••••....•••.•..••.••.•.•.•...•....••• 7
What is included in the box ...................................................................
-
.................... 7
Before starting........................................................................................................... 8
Tools and additional components .............................................................
_
................ 8
Mounting diagram ..................................................................................................... 9
Wiring diagram ........................................................................................................
10
Hi-Level wiring diagram ............................................................................................10
6. TROUBLESHOOTING •••.••.•••.•.•.•••....•..•••••.....••••••......•.•.•..••.•••...•....••...•..•••...•...•.••.••
11
The unit does notwork;
no
lights ..............................................................................
11
Sound is distorted ....................................
~
......................................................·..........
11
No
sound coming from the unit .................................................................................
11
7.
GLOSSARY
...•.••.•......•.•••.•..••.•.••••.•••..•••..••.
~
••...••••.•.....•.•...••
~
•.•••.........•••.•..•.••.•••.•.•••••
11
8. SPECIFICATIONS ....•........•...•.•..•....••••..••••.•..•.•.•...........•.••..•..•...........•.•...•........•..•..•
12
Thank you
for
purchasing this
Clarion
product.
• Please read this owner's manual in its entirety before operating this equipment.
• After reading this manual, keep it handy, such as in your glove compartment.
• Save your sales receipt. The warranty and your sales receipt are essential for
warranty service.
FCC_
Approval
This equipment has been tested and found to comply with the limits fora Class B digital
device, pursuant to Part 15
of
the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipmentgenerates, uses, and can radiate radio frequency energy and,
if
not installed
and used in accordance with the instructions,
may
cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation.
If
this equipment does cause harmful interference to radio
or
television reception, which can be determined
by
turning the equipment
off
and on, the
userisencouragedtoconsultthe dealer
or
an experienced radiofTVtechnicianforhelp.
EQS755
3

1. FEATURES
The Clarion EQS755 is a 7-band stereo equalizer/crossover specifically created
for
the
mobileenvironment. TheEQS755providespowerfulfeatures in a compactsize:
• Seven equalization bands(50Hz, 125Hz,315Hz,
750Hz,
2.2KHz, 6kHz, and
16kHz),
eachfrequencyadjustablefrom -12
to+
12dB(- 15
to+
15dBforsubwooferfrequencies).
• Subwooferoutputusesa built-in 18dB
per
octaveelectroniccrossoverfixed at
60Hz
or
90Hz.
•Threestereo
RCA
outputstodrivefront, rear, and subwooferaudioamplifiers.
•An auxiliarystereo
RCA
input
for
usewith portabledevices, such asan MP3player
or
DVDplayer.
• Frontpanel auxiliarystereo3.5mm input
for
theconvenientuse
of
your
phone
or
favorite
media player.
• Separatecontrols
for
mastervolume, subwoofervolume (sub level), front/rearfader,
and selection
of
main
or
auxiliaryinputs.
• Extendedfrequencyresponsefrom
20Hz
to
30kHz
with exceptional100dBsignal-to-
noiseperformance. ·
•Gold-plated
RCA
connectorstoensurethe bestaudiosignal output.
• ISOmounting holesand removabletrim ring forcustom installation.
• High Level speakerinput
for
integrationwith factory radios.
2. PRECAUTIONS
• Donotoperatethis productin
ways
otherthanthosedescribed in this manual.
• Donotdisassemble
or
modifythis unit.
• Donotpourliquid
or
pokeforeign objects intothe unit. Waterand humidity
may
damage
internal circuitry.
•If
the unitbecomeswet, turn offall
power
and ask
your
authorizedClarion dealertoclean
or
servicethe unit.
Failure to observe these precautions
may
damage your car, the monitor,
or
the video
source,
and
may
voidthewarranty. ·
Installation
Installation
of
mobile audio and video components requires experience with a variety
of
mechanical and electrical procedures.Although this manual provides general installation
and operation instructions, it does not
show
the exact installation methods for
your
particularvehicle.
Ifyou do not have the required knowledge and experience to successfully complete the
installation, consultan authorized Clarion dealeraboutprofessional installation options.
4
EQS755

3.
CONTROLS
AUX (auxiliary)
switch:
Press to
select rear auxiliary
or
main inputs,
(see Notes (A): From page 7)
AUX (Plug & Play) : Inserting the
cable will select this
AUX
Input
Subwoofer
volume
Equalizer
gain
controls
l
SUB EVEL VOLUME
EQS755
To
adjust gain, rotate control to desired setting
Master
volume
Fader
control:
Use to balance sound
between front and rear speakers
Frontpanel controls
Front
out
Main
in
Aux
in
R L R L R L
Power
Low-pass
frequency
switch
(60/90Hz)
R L
Rear
out
Hi
Input
Rearpanel connections
R L
&mout
AUX gain
control:
Gain adjustment for left and
right auxiliary input
Top
panel
EQS755
5

4.
OPERATIONS
Setting system volume
1.
Turnthe mastervolumeand subwooferlevel controlstotheirminimumsettings.
2. Turnthesourceuniton and increasethevolume untilyou heardistortion.
3. Reducethevolumeto
just
belowthedistortion point(approximately
80o/o
of
full
volume).
This is the maximum usable musical signal for the source unit. Turning the volume
beyondthispointincreases noiseanddistortionwithoutincreasing the musical signal.
Note
Onceyou
set
the source unitvolume, do
not
change
it.
Alwaysuse the volume controlon
the EQS755
as
the
master
(main) volume control. The EQS755has betterelectronics,
a
highersoundto noise ratio,
and
ismorelinearthan the volume settingson
any
source unit
available.
Adjusting the controls
The EQS755 provides a graphic adjustment band for each
of
seven frequency ranges:
sub, low, mid, mid-high and high frequency. You can adjust the center
of
each frequency
band tofine tune
the_
acoustical responseto
your
vehicle's interior.
1.
Set all frequencies to the center position. The small
dot
on the control knob should be
set
at
12o'clock.
2. Playyourfavorite musictrackand adjustthe individual controls to suityourtaste.Avoid
extremesettings, which can distortmusical peaks.
3.
Increase
or
decreasethe equalizergain controlstosuit
your
taste.
4.
If
yoursystem includes a subwoofer, slowly increasethesubwooferlevel until you hear
asolid bass.
S.lfyoursystem
includesrearspeakers,
adjustthefadercontrol
toadd rearsound.
Setit so most
of
the musiccomesfrom thefrontand onlyfills the rear.
Setting the low-pass frequency
Set the low pass frequency switch on the top
of
the EQS755 to either
60Hz
or
90Hz
dependingon the subwooferand subwooferamplifierrequirements.
Connecting an MP3 player or video unit
1.
Plug the MP3player
or
video unitintotheauxiliary
RCA
inputon the back
of
the
EQS755unit.
2.
Makesuretheauxiliarybutton onthefront
of
theunitisout, readytoreceive input
from the main
RCA
input(nottheauxiliary
RCA
input).
3.
Turn the EQS755mastervolumetoa normal listening level.
4. Presstheplaybutton on theauxiliarysource.
5.
Push in the
AUX
button tochangetothe auxiliarysource.
6. Using a smallflathead screwdriver, adjustthe
AUX
gaincontrols located on thetop
of
the unitsothatthevolume
of
theauxiliarysource matchesthevolume
of
the main
source.
6
EQS755

Notes(A):
1.
With
AUX
SI Wbuttonin
out
position
you
can
select
either
Hi
Input
or
Mainin.
1.
1
Do
not
use
Hi
Input
and
Main
at
same
time;doingthat
it
willcausemixingsounds,
causingtoo
much
distortionin the audio.
2.
With
AUX
SI Wbuttoninposition
you
canselectthe
AUXIN
function.
Using the
front
panel 3.5mm
input
1. ReducetheEQS755'svolumeto minimumbeforeplugging the3.5mmcabletoavoid
anysudden, unwantedchangesin output.
2. Plugthe3.5mmcable intothe
EQS755AUX
input.TheEQS755will automatically
selectthis inputwtten thecable in inserted.
3. Turn theEQS755mastervolumetoa normal listening level.
4.
To
go
backtothe main input, simplyreduce the mastervolumeandgentlyunplugthe
3.5mmcablefrom the EQS755.
Note: Unpluggingthe sourcedevice will
not
changeinputs. You
must
removethe
cablefrom the
EQS755
Care and maintenance
Cleaningthe
cabinet
Usea soft,
dry
cloth to gentlywipe dustanddirtfrom the unit.
Do not use benzene, thinner,
car
cleaner,
or
other cleaners. These substances
may
damagethe unit
or
causethepaintto peel.
Servicing
theequalizer/crossover
unit
In the eventthattrouble arises, neveropen the case
or
disassemblethe unit. The internal
partsarenotserviceable
by
the user. Openinganycomponentswill void thewarranty.
A CAUTION
Changes
or
modifications
to
this
product
that
are
not
approved
by
the
manufacturer
will
void
the
warranty
and
will
violateFCCapproval.
5.
INSTALLATION AND WIRING
Read these instructionsandthefollowing precautionscarefully.
What is included in the
box
In additiontothismanual, the boxcontains:
• EQS7557-band graphicequalizer
• 2 mounting brackets
• 8 Phillips-headscrews
EQS755
7

Before
starting
Mounting
precautions
The EQS755can be mounted nextto the source unitorunderthe dash using the
mounting brackets. Thefront panel controls should
be
easilyaccessiblefrom the
driver'sseat.
In
addition:
• This unitrequires additional mobile audio componentsforproperoperation.
• Always usegreatcare when attaching anything to avehicle! Checkclearances
in
front
of, behind, and on both sidesofthe planned installation before drilling anyholesor
installing anyscrews.
Wiring
precautions
Disconnectthe ground (-)terminal
on
the vehicle'sbattery.
A
WARNING
To
prevent
short
circuits
during
installation,
always
disconnect
the vehicle's
negative(-)
battery
lead
before
making
any
connections.
• This unitis exclusivelyforvehicleswith a negativeground, 12Vbatterysystem.
• Agood chassisground connection
is
critical to minimizeresistance and avoid noise
problems. Use the shortestwire possible and securelyconnect itto the carchassis and
the source unitground. ·
• When routing RCAcables, keep the cables awayfrom the powercables and output
speakerwires.
• Ifyou are using a source unitwithout a remote turn-on lead, the EQS755 can
be
turned
on
with aswitched accessorylead. This accessorypowersource is located
in
the
factory harnessatthe back
of
the radio. This leadturns on and offwith the ignition
key.
•
Do
notopen the case. There are no user-serviceable parts inside. If
you require
assistance, consultyourClarion dealeror
an
authorized Clarion service center.
Tools and additional
components
You
will need:
• APhillips-head screwdriverwhen mounting the unit
in
the vehicle.
• Asmall flat-head screwdriverto adjusttheAUXgain controls ifyou connect
an
MP3
playerorvideo source.
• High-qualityRCAinputand outputcables.
Extra cable can cause signal loss and act as
an
antenna for noise. Use only highquality
RCAcablesthatare no longerthan necessaryto make adirectconnection with the source
unitand amplifiers.
8
EQS755

Mounting
diagram
EQS755
9

Wiring diagram
Source
unit
Auxiliary
source
Remote
tum-on
Chassis
ground
-==
(bare
metal)
-
Blue
R L
Rear
out
Front
amp/rear
amp
clarion
Hi-level wiring diagram
Front
out
R L
R L
Power Rear
out
10
EQS755
Main in
R L
I
Auxin
R L
HI
Input
HI
Input
-II
R L
&m<U
Sub
amp
clarion
An,
...
Factory
·
Source
uni
t
OEM speaker wires
L-~R-
L+~R+
HI-INPUT
Detail View