Panasonic CQ-DP738 User manual

Panasonic.
Removable
Face
High-Power
CD
Player/Receiver
CQ-DP738/728EU
Operating Instructions
Please read these instructions completely before operating this unit.

Panasonic welcomes you to our ever growing family of electronic product owners. We know that this
product will bring you many hours of enjoyment. Our reputation is built on precise electronic and mechan-
ical engineering , manufactured with carefully selected components and assembled by people who take
pride in their work. Once you discover the quality, reliability, and value we have built into this product, you
too will be proud to be a member of our family.
O Use This Equipment Safely
When Driving
Keep the volume level tow enough to be aware of road and traffic conditions.
When Car Washing
Do not expose the equipment, including the speakers and CDs, to water or excessive moisture. This
could cause electrical shorts, fire, or other damage.
When Parked
Parking in direct sunlight can produce very high temperatures inside your vehicle. Give the interior a `
chance to cool down before switching the unit on.
Use the Proper Power Supply
This equipment is designed to operate off a 12 volt, negative ground battery system (the normal system in
a North American car.)
Protect the Compact Disc Mechanism
Avoid insertion any foreign matters to the slot of the compact disc.
Failure to observe this may cause malfunction due to precise mechanism of this unit.
Use Authorized Servicenters
Do not attempt to disassemble or adjust this precision equipment. Please refer to the Servicenter list
included with this product for service assistance.
Note:
This operating instruction manual is for 2 models CQ-DP738EU and CQ-DP728EU. All illustrations
throughout this manual represent mode! CQ-DP738EU unless otherwise specified. The following table
describes the differences between 2 models.
Operating Controls
Telephone mute | Security Indicator ON/OFF
Find the modei number and serial number on either the back or bottom of the unit. Please record them in
the space below and retain this booklet as a permanent record of your purchase to aid in identification in
case of theft.
MODEL NUMBER CQ-DP738/728EU SERIAL NUMBER
DATE PURCHASED FROM
CQ-DP738/728EU

Contents
Use This Equipment Safely ais oiceieles uses oases U OU bed balad es T stm acewegtasees cess Page 2
Lasar PLOGUCIS------ceeecceceeee ert ertent enter ete ese Ara ese neee ene eeD eee FNS eEDENO FED OND ONO EN eb ae iautsi 4
o Power and Sound Controls -eess-ssse.sssssssssarsarsnnenstnnvusssnuvnseruavrnvenaveneee 5
How to adjust the volume, Tone Enhancement, Attenator, balance,
and tone for best listening
J Radio Basics -.-sseessesrsessaessersesresrravserreseresseesesvsesvserveesravsenvsenreresersenres 8
Manual and automatic tuning, band selection, preset stations
O Compact Disc Player Basics eererereerrerrerrserreresrerereserrerserrserreenses 10
Mode selection, play repeat, random and scan
O CD Changer Basics (Only for CQ-DP738EU) eeereerererereerreesene 12
Play, repeat, random and scan
Note:
CD changer controls are applicable to units with optional CD charger unit
(sold separately).
O Clock Basics. ------eeesseeseereeresorrerrsrrsrnsannansaansarnsnnnannannnrnnsenenrnturarnsrnnsnns 14
Initial time setting, resetting the time, selecting the clock display
g Remote Control Unit Basics. .-----.eessserserressessevenavssevssenseeasearesnecareaneens 15
Battery replacement, notes and Operating procedures.
O Installation Mle lle): Ree eee nr ere here tet erin rr rere rr et rrr cere rrer 18
Step-by-step procedures, anti-theft system, electrical connections
oO Troubteshooting.eee-seseetsterrretersreetrrenintnrestersntirerrerresirerresnrerresrrerrees 28
Error messages, troubleshooting tips,where to get service help
g Special Notes oeeeereereerrerresrrerrerrererrereerereereerenererrerrereenenernerenrennrrererrerens 30
Notes on compact discs, a caution on new discs
SPe@ifiCAtiONS --------+-::ceeececeeceeceeseeeeeeren eae entensensseeseenensenscensenseneaeesassaaeneeeseeseeeeee 31
OEO
DDD
CQ-DP738/728EU

g Laser Products (The standard described on this page is for U.S.A. only.)
Caution:
This product utilizes a laser.
Use of controls or adjustments or performance of procedures other than
those specified herein may result in hazardous radiation exposure.
Laser products:
Wave length 780 nm
Laser Power No hazardous radiation is emitted with safety protection.
+ Label indications and their locations
Certification label
Identification label
Certification Labe! Identification Label
Product complies with DHHS Rules 21 er
CFR, Subchapter J in effect as of date odano.
of manufacture. N? De Modèle CQ-DP738 EU
Matsushita Communication Industrial Co., Ltd.
Yokohama, Japan So
MANUFACTURED ae EI
see eee ee oe
Manufactured by Matsushita Communication
Industrial Co., Ltd. Yokohama Japan
Made in Japan
CQ-DP738/728EU

Power and Sound Controls
If the car is not already running, turn the key in the ignition until the
accessory indicator lights.
Press PWR to switch on the power.
Volume
Press “VOLA” or “VOLY’” to increase or decrease volume.
H g L 30+ Volume Level
0 to 40
Press “VOLA” or “VOLV” for more than a half second to change
numeric levets on the display rapidly.
Attenuator
* Press ATT. Volume will decrease to about 1/10 of its previous level.
¢ Press ATT again to deactivate when listening at normal volume.
Tone Enhancement
Press LOUD((=))to enhance bass and treble tones when listening at
low or medium volume. Press LOUD((=))again to deactivate.
Note: This unit is equipped with an anti-volume-biast circuit which serves as an automatic volume
level adjuster so that you will not be deafened sudden toud volume.
This system operates as follows. When PWR is switched on, the volume level is low. After that, the
volume level gradually returns to its previous level prior to switching off the unit.
CQ-DP738/728EU

Power and Sound Controls continued
Changing Audio Modes
Press SEL to switch the audio mode in the following order.
VOLUME æ» BASS » TREBLE
t §
FADER « BALANCE
Bass and Treble
* Press SEL to select the BASS (TREBLE) mode. press “VOLA” or
“VOLV” to increase or decrease the bass/treble response.
-12 to 12 -12 to 12
e Press “VOLA” or “VOLV” for more than a half second to change
numeric levels on the display rapidly.
Balance
e Press SEL to select the BALANCE mode. Press “VOLA” or
“VOL” to shift the sound volume to right or left speakers.
orL ito 15 Balance Center
e Press “VOLA” or “VOLV” for more than a half second to change
numeric levels on the display rapidly.
Fader
« Press SEL to select the FADER mode. Press “VOLA” or “VOLV”
to shift the sound volume to the front or rear speakers.
orR 1to15 Baiance Center
¢ Press “VOLA” or “VOLY” for more than a half second to change
numeric levels on the display rapidly.
Note: When a contro! mode (BAS/TRE/BAL/FAd) is selected but no operation is made within 5 sec-
onds, the display will return to the normal operation (volume adjustment) mode. In such a case,
press SEL again to select the next control mode.
CQ-DP738/728EU

Selecting Auxiliary Source
¢ Press AUX to select AUX Input mode.
. Connect the auxiliary equipment (an optional DCC player deck or
any other appropriate equipment) to the AUX Jack.
Press AUX or MODE again while the AUX mode is operated, the
mode will return to the previous mode. Or insert a CD and the mode
will change to CD mode.
Caution:
In order to insert the plug into the “AUX” Jack properly, make
sure to use the correct size of the stereo plug shown on the left.
A-MIN 1/2" LONG (12mm)
B-MAX 2/5" DIA. (10mm)
C-MIN 1/8" DIA. (3.5mm)
CQ-DP738/728EU

Radio Basics
Hold and Release
CQ-DP738/728EU
To change Tuner Mode
Tuner mode is selected if the MODE button is pressed in either CD
Player, CD Changer Control modes (only for CQ-DP738EV).
IOo.) eni
Selecting a Band
Press BAND to select the bands in the following order.
FM1 ——> FM2 —> FM3 —> AM
“ST”
indicator
lights
if
the
station
is
broadcasting
in
stereo.
Manual Tuning
Press
“A
TUNE”
or
““
TUNE”
to
move
to
a
higher
or
lower
frequency.
Seek Tuning
Press and hold “ATUNE” or ““ TUNE” for more than a half second,
then
release.
The
radio
automatically
stops
on
the
next
station.

Preset Station Setting
Up to 20 stations can be preset in the station memory as follows;
FM1 FM2 FM3
Sates | Sete [Settee [ites
Manual Station Preset
@) Press BAND to select a desired band.
@ Use manual or seek tuning to find a station that you want to pro-
gram into memory. l
@ Press and hold one of the station selector buttons 1 through 5 until
the display blinks.
Repeat the process to set other stations for the FM1 to AM bands.
IN.) ena-3--eutton NuMBER
Note; You can change the memory setting by repeating the
above procedure.
Tuning in a Preset Station
Press any of the buttons 1 through 5 to tune in the station preset by
the above steps @ to ©.
Auto Station Preset
Select a band and press and hold BAND (AUTO PRESET) for more
than 2 seconds.
¢ The five strongest available stations will be automatically set in
memory preset buttons 1 through 5.
¢ Once set, the preset stations are sequentially scanned for 5 sec-
onds.
e Press the appropriate preset button for the station you want to
hear.
Caution: For safety reasons, do not attempt to program while driving.
9
CQ-DP738/728EU

Compact Disc Player Basics
10
CQ-DP738/728EU
Mode Selection
While the disc is inserted, press MODE to switch the operation mode
in the following order.
<For CQ-DP738EU> <For CQ-DP728EU>
Tuner —> CD Player —» CO Changer Control Tuner «> CD Player
To start the CD Player
Insert the disc (label side up) and playback starts automatically.
LORd
“LOAd’” will be displayed unti! the disc is loaded. Play starts from first
track.
O 7
Note: While the disc is inserted, “© ” indicator will light. If you press
“MODE” after the disc is ejected, the disc will be re-inserted.
Stopping and Ejecting a Disc
Press “ á” to stop CD play, and the disc will quietly eject from the CD
slot. (During disc ejection, “EJ” will be displayed.)
Selecting a Track
Press “TRACK” once to go to the next track. Press repeatedly to
step forward through ali the tracks.
Press ““ TRACK” once to play from the beginning of the track you
are listening to. Press twice to play the previous track. Press repeat-
ediy to step backward through all the tracks.
Searching a Track
Press and hold “TRACKA%” or ““ TRACK” for more than a half second
to activate fast forward or reverse through a track.
Release “TRACK™~” or ““ TRACK” to resume the normal CD play
from that positon.

Repeating a Track
Press REP to repeat the current selection. “REPEAT” indicator will
light.
The current selection will continue to repeat until you press REP
again.
Random Selection
Press R». “RANDOM?” indicator will light. A random selection of
music is played from all available tracks.
To turn off the random play feature, press RP.
Notes:
¢ If REP is pressed during random play, the track now in play auto-
matically returns to its beginning upon coming to the end and plays
back again. (Random repeat)
REPEAT RANDOM
e When REP is pressed again, repeat play stops and returns to ran-
dom play.
» Press R® again, random play stops and repeat play starts.
Scanning a Disc
Press SCAN. The display will blink and the first 10 seconds of each
track on the disc play in order.
To stop scanning and continue with the current track, press SCAN
again.
Selecting by Track Number
(Direct access)
e Press a number from “1” to “5” then the corresponding track will
start.
+ Press and hold a number from “6” to “10” (“1” to “5”) for more than
one second and the corresponding track will start.
CQ-DP738/728EU
11

CD
Changer
Ba€SICS
coniy
tor
ca-0P738EU)
CQ-DP738/728EU
To start the CD Changer
With a disc magazine inserted in the CD Changer, press MODE. Play
starts from first track.
[Only for CX-DP600EUC, [Only for CX-DP15EU}
CX-DP2000EU]
Oaoa l
' Va Za Gpe
HHH: LUAd
Selecting a Disc
Press
“DiscV”
or
“Disc~”
to
select
discs
in
descending
or
ascending
order.
Display
shows
as
follows
until
the
selected
disc
is
loaded.
Play
starts
from
first track.
{Only for CX-DP600EUC, CX-DP2000EU]
oman i
mAN >s
UUU i
[Only for CX-DP15EU/EC]
ima —_|-—[ ib
Selecting a Track
Press
“TRACK”
once
to
go
to
the
next
track.
Press
repeatedly
to
step
forward
through
all
the
tracks.
Press ““TRACK” once to play from the beginning of the current
track.
Press
twice
to
play
the
previous
track.
Press
repeatedly
to
step backward through all the tracks.
Searching a Track
Press
and
hold
“TRACK”
or
““
TRACK”
for
more
than
a
half
second
to
activate
fast
forward
or
reverse
through
a
track.
Release
“TRACKA”
or
““
TRACK”
to
resume
the
normal
CD
play
from
that
position.

Repeating a Track
Press REP to repeat the current selection. “REPEAT” indicator
lights.
REPEAT
The current selection continues to repeat until you press REP again.
Random Selection
Press R > . “RANDON” indicator will light. A random selection of
music is played from all available tracks.
RANDOM
To turn off the random play feature, press R œ again.
Note:
¢ If REP is pressed during random play, the track now in play auto-
matically returns to beginning upon coming to the end plays back
again. (Random repeat)
REPEAT RANDOM
+ When REP is pressed again, repeat play stops and returns to ran-
dom play.
e Press R® again, random play stops.
Scanning Tracks
Press SCAN. The display blinks and the first 10 seconds of each
track on the discs play in sequence.
To stop scanning and continue with the current track, press SCAN
again.
Scanning Discs
Press and hold SCAN for more than 2 seconds. The 1st track of all
the discs in the magazine is played for 10 seconds each. Also, Disc
Number is displayed at the same time. To stop the current play of the
disc scanning, press and hold SCAN for more than 2 seconds again.
Changing the Display tony torcx.pp1seu)
Press CLOCK to switch the display in sequence as follows.
Disc / Track Number
Track Play Time
CQ-DP738/728EU

14
Cl ock Basics (The clock system is 12-hours.)
CQ-0P738/728EU
Initial Time Setting
@ Press CLOCK( œ). “AdJ” is displayed. — Ag J —
@ Press and hold CLOCK([=) )again for more; |
than 2 seconds, “12” blinks indicating the|— ć } 208
time setting mode is activated.
|
© To set hours, press “VTUNE” or “TUNE®”.
@
Press
CLOCK(G))again
for
minute
setting.
E
!
S
© To set minutes, press “YTUNE” or “TUNE”. 8:15
Hold “^” or “V” to change numbers rapidly.
© When you have set the time, press CLOCK
(Œ).
Resetting the Time
When you want to reset the time, press CLOCK( (=) )for more than 2
seconds to activate the time setting mode. Then, repeat step @ to ©
above.
Selecting the Clock Display
Press CLOCK((=] )for click display.
Press CLOCK((=))once again, the current audio display mode resumes.

Remote Control Unit Basics
Battery Replacement (Remote Control Unit)
1.Remove the battery holder.
Pull the holder by the Position B while pushing
Position A in the direction indicated by the arrow. Rear view of remote
control
Lithium battery
2.Replace the battery.
Set a new battery properly with the (+) side up as
itustrated. j
.
Position
B
3.Insert the battery holder.
Push in the holder to the full.
P
Battery holder Position A
Notes on Batteries
Old batteries must immediately be removed and disposed.
Battery Information:
¢ Designated Battery: Panasonic Lithium Battery (CR2025)
* Battery Life: 6 months with normal use (in normal room temperature)
Caution:
Improper use of batteries may cause overheating, explosion or ignition, resulting in injury or fire.
Battery leakage may cause damage to the unit.
* Do not disassemble or short the batteries. Do not throw the batteries into the fire.
¢ To avoid the risk of accident, keep the batteries out of reach of children.
CQ-DP738/728EU
15

16
Remote Control Unit Basics continues
O Power Button
@BAND/DISC UP Button
@ATT Button
@®TUNE/TRACK Button
®Volume.Contro! Button
© Mode Button
Please refer Battery Replacement before using
remote control.
O
pe
rati
n
g
P
ro
ced
u
re
S
a
ane
romong
controller
toward
the
sensor
of
Attenuator
@ATT (ATT Button)
* Press ATT to immediately decrease vol-
Power
@ Power (Power Button)
e Press POWER to switch on the power.
¢ Press POWER again to switch off the power.
ume to about 1/10 of its previous level.
e Press ATT again to resume the previous
volume.
Mode Selection
®MODE (Mode Button)
Press MODE to switch the operation Volume
mode in the following order. ®VVOLA (Volume Control Button)
(For CQ-DP738EU) Press “^” or “V” to increase or decrease
Radio —~ CD Player ——-> CD Changer volume level.
t
Control
AUX ——————__I
(For CQ-DP728EU)
Radio ———» CD Player ———> AUX
Radio
Selecting a Band Seek Tuning
@BAND (Band select Button) @VTUNEA (Seek Tuning Button)
Press BAND to select bands in sequence. Press and hold “Vv” or “A” for more than a
FM1 —> FM? —~» FM3 ——>AM1 half second, then release. The radio will
automatically stop on the next station.
Manual Tuning
@®VTUNEA (Manual Tuning Button)
Press “V” or “A” to tune the frequency
downward or upward.
CQ-DP738/728EU

Car Audic
® Power Button
@BAND/DISC UP Button
@ATT Button
@TUNE/TRACK Button
®Volume Control Button
© Mode Button
Operating Procedures
Compact Disc Player
(When a disc is inserted, playback starts.)
To starts CD Play
©MODE (MODE Button)
e Only when a disc is inserted, press to
select CD play mode, and playback starts
automatically.
¢ When connecting with the CD changer,
press repeatedly to select the mode as
follows.
Radio — CD Player —> CD Changer
(Only for CQ-DP738EU)
AUX <——_-__!
When a disc is inserted, the CD play starts
automatically regardless what mode you
are being listened.
CD Changer Control (Only for CQ-DP738EU)
(In connection with the CD changer.)
To Start the CD Changer
©MODE (Mode Button)
When connecting with CD Changer, press
MODE to select CD Changer Control
Mode, and playback starts automatically.
Radio —>CD Player CD Changer
[EEEE AU ol
Selecting a DISC
@DISC UP (Disc Select Button)
Press to sequentially advance to the next disc.
Selecting a Track
@VTRACKA (Track Select Button)
» Press “A” once to go to the next track.
e Press “V” once to play from the begin-
ning of the currently played track.
e Press repeatedly to skip forward or back-
ward through all the tracks.
Searching a Track
@-VTRACKA (Track Search Button)
Press and hold “Vv” or “A” for more than a
half second to activate fast forward or
reverse through a track.
Searching a Track
@VTRACKA (Track Search Button)
e Press and hold “v” or “A” for more than a
haif second to activate fast forward or
reverse through the disc.
Release to stop fast forward or reverse.
Selecting a Track
@VTRACKA (Track Select Button)
e Press “^” once to go to the next track.
e Press “V” once to play from the beginning
of the currently played track.
* Press repeatedly to skip forward or back-
ward through all the tracks.
CQ-DP738/728EU
17

18
Installation Guide
ÁN WARNING
The installation information is designed for experienced installers and is not
intended for non-technical individuals. it does not contain warnings or cautions of
potential dangers in attempting to install this product.
Any attempt to install this product in a motor vehicle by anyone other than quali-
fied installer could cause damage to the electrical system and could result in seri-
ous personal injury or death.
O Overview
This equipment should be installed by a profes-
sional. However, if you plan to install this unit
yourself, your first step is to decide where to
install it. The instructions in these pages will
guide you through the remaining steps: (Please —
refer to “WARNING” statement above).
e Identify and label the vehicle wires
e Connect the vehicle wires to the wires of the
power connector
e install the unit in the dash
+ Check the operation of the unit
If you do encounter problems, please consult
your nearest professional installer.
Caution: This unit will operate with a 12 volt DC
negative ground auto battery system only. Do not
attempt to use it in any other system. Doing so
could cause serious damage.
Before you begin installation, took for the follow-
ing items inctuded in the packing with your unit.
e Warranty Card .... Fill this out promptly
¢ MSC (in Canada: Panasonic) Servicenter
Directory ..... Keep for future reference in case
the unit needs servicing
e Installation Hardware ..... Needed for in-dash
installation
CQ-DP738/728EU
O Installation Hardware
No; item | Diagram |Qty
| Mounting Collar Sal
g Plain Washer (5 mmo) Kra
Spring Washer (5 mmo) EIH
peee o
© Rear Support Strap lA
©) | Hex. Boit
(5 mmo x 25 an
Toothed Lock Washer
(5 mmo)
Mounting Bolt (5 mmo) rag
c>
ao eT
Removabie Face Plate | 1
K Case
4) | Remote Contro! Unit 1
xy
@ | Lithium battery 1
- ©

O Required Tools
You'll
need
a
screwdriver,
a
1.5
volt
AA
battery,
and
the
following:
12 VDC
TEST BULB
ELECTRICAL SIDE-CUT
TAPE PLIERS
Les
O Dashboard Specifications
THICKNESS
MIN. 3/16” (4.75 mm)
—||—
MAX.
7/32”
(5.56
mm)
=e 9-3/32” (53 mm)
7-5/32" ee ae
O Identify All Leads
The first step in installation is to identify all the
vehicle wires you'll use when hooking up your
sound system.
As you identify each wire, we suggest that you
label it using masking tape and a permanent
marker.
This
will
help
avoid
confusion
when
mak-
ing connections later.
Note: Do not connect the power connector to the
stereo
unit
until
you
have
made
all
connections.
If there are no plastic caps on the stereo hooking
wires,
insulate
all
exposed
leads
with
electrical
tape until you are ready to use them. Identify the
leads in the following order.
Power Lead
A, If your vehicle has a radio or is pre-wired for one: `
Cut
the
connector
plug
off
(leaving
the
leads
as
long
as
possible)
so
that
you
can
work
with
indi-
vidual
leads.
§ ©
Turn
the
ignition
on
to
the
accessory
position,
and
ground
one
lead
of
the
test
bulb
to
the
chassis.
Touch
the
order
lead
of
the
test
bulb
to
each
of
the
exposed
wires
from
the
cut
radio
connector
plug.
Touch
one
wire
at
a
time
until
you
find
the
outlet
that
causes
the
test
bulb
to
light.
Now
turn
the
ignition
off
and
then
on.
1f
the
bulb
also
turns
off
and
on,
that
outlet
is
the
vehicle
power
lead.
If
your
vehicle
is
not
wired
for
an
audio
unit:
Go
to
the
fuse
block
and
find
the
fuse
port
for
radio
(RADIO),
accessory
(ACC),
or
ignition
(IGN).
Battery Lead
If
your
stereo
unit
has
a
yellow
lead,
you
will
need
to
locate
the
car’s
battery
lead.
Otherwise
you
may
ignore
this
procedure.
(The
yellow
battery
lead
provides
continuous
power
to
maintain
a
clock,
memory
storage,
or
other
function.)
If
your
vehicle
has
a
radio
or
is
pre-wired
for
one:
With
the
ignition
and
headlights
off,
identify
the
car
battery
lead
by
grounding
one
lead
of
the
test
bulb
to
the
chassis
and
checking
the
remaining
exposed
wires
from
the
cut
radio
connector
plug.
If
your
vehicle
is
not
wired
for
an
audio
unit:
Go
to
the
fuse
block
and
find
the
fuse
port
for
the
battery,
usually
marked
BAT.
Speakers
Identify
the
car
speaker
leads.
There
will
be
two
leads
for
each
speaker,
usually
color
coded.
CQ-DP738/728EU
19

20
Installation Guide continued
A handy way to identify the speaker leads and the
speaker they connect with is to test the leads
using a 1.5 volt AA battery as follows.
Hold one lead against one pole of the battery and
stroke the other lead across the other pole. You
will hear a scraping sound in a speaker if you are
holding a speaker lead.
If not, keep testing different lead combinations
until you have located all the speaker leads.
When you label them, include the speaker loca-
tion for each.
Antenna Motor
If your vehicle is equipped with an automatic
power antenna, identify the vehicle motor anten-
na lead by connecting one bulb tester lead to the
vehicle battery lead and touching the remaining
exposed wires from the cut radio connector plug
one at a time. You will hear the antenna motor
activate when you touch the correct wire.
Antenna
The antenna lead is a thick, black wire with a
metal plug at the end.
Telephone Mute (only for CQ-DP738EU)
If you have a cellular phone, refer to its operator
manual to identify the telephone mute lead con-
nection.
O Connect All Leads
Now that you have identified all the wires in the
vehicle, you're ready to begin connecting them to
the stereo unit wires. The connection diagram on
Page 27 show the proper connections and color
coding of the leads.
We strongly recommend that you test the unit
before making a final installation.
You can set the unit on the floor and make tem-
porary connections to test the unit. Use electrical
tape to cover all exposed wires.
Important: Connect the red power lead last, after
you have made and insulated all other connec-
tions.
Ground
Connect the black ground lead of the power con-
nector to the metal vehicle chassis.
CQ-DP738/728EU
Speakers
Connect the speaker wires. See the wiring dia-
gram below for the proper hookups. Follow the
diagram carefully to avoid damaging the speakers
and the stereo unit.
The speakers used must be able to handle more
than 35 watts (for CQ-DP728EU; 25watts) of
audio power. If using an optional audio amplifier,
the speakers should be able to handle the maxi-
mum amplifier output power. Speakers with low
input ratings can be damaged.
Speaker impedance should measure 4 - 8 ohms,
which is typically marked on most speakers.
Lower or higher impedance speakers will affect
output and can cause both speaker and stereo
unit damage.
Caution: Never ground the speaker cords. For
example, do not use a chassis ground system or
a three-wire speaker common system. Each
speaker must be connected separately using par-
allel insulated wires. If in doubt about how your
car’s speakers are wired, please consult with your
nearest professional instalter.