Sharp XL-3000 User manual

– 1 –
XL-3000/3000C
SERVICE MANUAL
SHARP CORPORATION
No. S4122XL3000U/
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
COMPACT AUDIO SYSTEM
• In the interests of user-safety the set should be restored to its original
condition and only parts identical to those specified should be used.
XL-3000 Compact Audio System consisting of XL-3000 (main
unit) and CP-XL3000U (speaker system).
MODEL XL-3000
XL-3000C Compact Audio System consisting of XL-3000C
(main unit) and CP-XL3000U (speaker system).
MODEL XL-3000C
CONTENTS
Page
IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY) ..................................................................................................... 2
SPECIFICATIONS ............................................................................................................................................................ 2
NAMES OF PARTS .......................................................................................................................................................... 3
OPERATION MANUAL..................................................................................................................................................... 5
DISASSEMBLY................................................................................................................................................................. 7
REMOVING AND REINSTALLING THE MAIN PARTS.................................................................................................... 9
ADJUSTMENT................................................................................................................................................................ 10
TEST MODE ................................................................................................................................................................... 11
NOTES ON SCHEMATIC DIAGRAM ............................................................................................................................. 20
TYPES OF TRANSISTOR AND LED.............................................................................................................................. 20
WAVEFORMS OF CD CIRCUIT..................................................................................................................................... 21
BLOCK DIAGRAM .......................................................................................................................................................... 22
SCHEMATIC DIAGRAM ................................................................................................................................................. 26
WIRING SIDE OF P.W.BOARD...................................................................................................................................... 34
TROUBLESHOOTING .................................................................................................................................................... 38
FUNCTION TABLE OF IC .............................................................................................................................................. 44
LCD SEGMENT .............................................................................................................................................................. 53
PARTS GUIDE/EXPLODED VIEW
PACKING OF THE SET (FOR U.S.A. ONLY)

XL-3000/3000C
– 2 –
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)
BEFORE RETURNING THE AUDIO PRODUCT
(Fire & Shock Hazard)
Before returning the audio product to the user, perform the following
safety checks.
1. Inspect all lead dress to make certain that leads are not pinched
orthathardwareisnotlodgedbetweenthechassisandothermetal
parts in the audio product.
2. Inspectallprotectivedevicessuchasinsulatingmaterials,cabinet,
terminal board, adjustment and compartment covers or shields,
mechanical insulators etc.
3. To be sure that no shock hazard exists, check for leakage current
in the following manner.
* Plug the AC line cord directly into a 120 volt AC outlet.
* Usingtwoclipleads,connecta1.5kohm,10wattresistorparalleled
by a 0.15µF capacitor in series with all exposed metal cabinet
parts and a known earth ground, such as conduit or electrical
ground connected to earth ground.
* Use a VTVM or VOM with 1000 ohm per volt, or higher, sensitivity
tomeasuretheACvoltagedropacross theresistor(Seediagram).
* Connect the resistor connection to all exposed metal parts having
areturnpathtothechassis(antenna, metal cabinet, screw heads,
knobs and control shafts, escutcheon, etc.) and measure the AC
voltage drop across the resistor.
All check must be repeated with the AC line cord plug connection
reversed.
Any reading of 0.3 volt RMS (this corresponds to 0.2 milliamp. AC.)
or more is excessive and indicates a potential shock hazard which
must be corrected before returning the audio product to the owner.
TO EXPOSED
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
TEST PROBE
0.15 µ F
1.5k ohms
10W
VTVM
AC SCALE
■General
■Amplifier
■CD player
■Tuner
■Speaker
Power source AC 120 V, 60 Hz
Power
consumption 45 W
Dimensions Width: 9-1/16" (230 mm)
Height: 5-1/16" (128 mm)
Depth: 11-9/16" (293 mm)
Weight 6.6 lbs. (3.0 kg)
Ou
(For U.S.A)
(For CANADA)
tput power
Output power
16 wat
RMS: 40W (20W + 20W) (10% T.H.D.)
ts minimum RMS per channel into 6
ohms from 100 Hz to 20 kHz, 10% total har-
monic distortion
Output terminals Speakers: 6 ohms
Headphones: 16 - 50 ohms (recommended:
32 ohms)
CD digital output (optical)
Subwoofer (Audio signal): 500 mV/47 ko-
hms
Input terminals Video/Auxiliary (audio signal): 500 mV/47
kohms
Type Compact disc player
Signal readout Non-contact, 3-beam semiconductor laser
pickup
D/A converter 1-bit D/A converter
Frequency
response 20 - 20,000 Hz
Dynamic range 90 dB (1 kHz)
Frequency range FM: 87.5 - 108 MHz
AM: 530 - 1,720 kHz
Type 2-way type speaker system
2" (5 cm) Tweeter
4" (10 cm) Woofer
Maximum input
power 40 W
Rated input power 20 W
Impedance 6 ohms
Dimensions Width: 5-9/16" (140 mm)
Height: 11-3/8" (288 mm)
Depth: 7-3/8" (187 mm)
Weight 4.9 lbs. (2.2 kg)/each
SPECIFICATIONS
Specifications for this model are subject to change without prior
notice

– 3 –
XL-3000/3000C
NAMES OF PARTS
■
Front panel
1.CD Compartment
2.Volume Up and Down Buttons
3.Power Button
4.Function Selector Button
5.Memory/Set Button
6.Bass/Treble Selector Button
7.CD Play or Pause, Tuning Up Button
8.CD Stop, Tuning Down Button
9.CD Track Down or Fast Reverse,
Tuner Preset Down Button
10.CD Open/Close Button
11.CD Track Up or Fast Forward,
Tuner Preset Up Button
■Display
1.Timer Play Indicator
2.Sleep Indicator
3.CD Random Play Indicator
4.Memory Indicator
5.FM Stereo Mode Indicator
6.CD Play Indicator
7.CD Repeat Play Indicator
8.FM Stereo Receiving Indicator
9.Surround Indicator
1
2
3
4
5
6
7
8
9
10
11
12345
79
6 8
■Rear panel
1.Headphone Jack
2.AM Antenna Terminal
3.Antenna Earth Terminal
4.FM 75 Ohms Antenna Jack
5.CD Digital Output Jack
6.Subwoofer Output Jack
7.Video/Auxiliary (Audio Signal) Input Jacks
8.Speaker Terminals
9.AC Power Input Jack
2
1
3
4
5
6
7
8
9

XL-3000/3000C
– 4 –
■Speaker system
1.Tweeter
2.Woofer
3.Bass Reflex Duct
4.Speaker Terminals
1
2
4
3
Speaker grilles are removable:
Make sure nothingcomes into contact with
thespeakerdiaphragms whenyouremove
the speaker grilles.
Placing the speaker system: Left speaker Right speaker
There is no distinction between
the right and the left speakers.
Notes:
●The speakers are magnetically shield.
Therefore,theydonotaffectthedisplayeven ifyouusethemnear
the TV. However, some color variation may occur, depending on
the type of TV used.
If color variation occurs...
Turn off the TV (from the power switch).
After 15 - 30 minutes, turn the TV on again.
If the color variation is still present...
Move the speakers further away from the TV.
●If any kind of magnet or an electromagnet is placed too close to
the TV and the system, irregular colors may appear on the TV
screen.
■Remote control
1.Remote Control Transmitter
2.Power Button
3.CD Button
4.Tuner Button
5.Timer Button
6.Clock Button
7.Memory Button
8.Dimmer Button
9.Surround Button
10.Volume Up and Down Buttons
11.Video/Auxiliary Button
12.Band Selector Button
13.Clear Button
14.Sleep Button
15.Random/Repeat Button
16.CD Open/Close Button
17.Tuner Preset Up Button
18.CD Track Down Button
19.CD Fast Reverse, Tuning Down Button
20.CD Play Button
21.CD Track Up Button
22.CD Fast Forward, Tuning Up Button
23.CD Pause Button
24.CD Stop Button
25.Tuner Preset Down Button
26.Bass Up and Down Buttons
27.Treble Up and Down Buttons
Buttons with " " mark in the illustration can be operated on the re-
mote control only.
Other buttons can be operated both on the main unit and the re-
mote control.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17 21
22
23
18
19
20
24 25
26 27

– 5 –
XL-3000/3000C
OPERATION MANUAL
Setting the Clock
This may be operated only with the remote control.
In this example, the clock is set for the 12-hour (AM 12:00) display.
To confirm the time display when the power is on:
Press the CLOCK button.
The time display will appear for about 5 seconds.
Note:
The time will flash at the push of the CLOCK button when the AC
power supply is restored after a power failure or unplugging the unit.
Readjust the clock as follows.
To readjust the clock:
Perform "Setting the Clock" from the beginning.
To change the 12-hour or 24-hour display:
1
Press the CLOCK button and within 3 seconds, press
the MEMORY button.
2
Within 1 minute, press the PRESET ( or ) button to
select 12-hour or 24-hour display and then press the
MEMORY button.
"AM 12:00" The 12-hour display will appear.
(AM 12:00 - PM 11:59)
"0:00" The 24-hour display will appear.
(0:00 - 23:59)
Note that this can only be set when the unit is first installed or it
has been reset.
3
Within 1 minute, press the PRESET ( or ) button to
adjust the hour and then press the MEMORY button.
●When the 12-hour display is selected, "AM" will change au-
tomatically to "PM".
4
Within 1 minute, press the PRESET ( or ) button to
adjust the minutes and then press the MEMORY button.
●The hour will notadvance even ifminutes advance from "59"
to "00".
●The clock starts from "0" second. (Seconds are not dis-
played.)
1 Clear all the programmed contents.
2 Perform "Setting the Clock" from the beginning.
Remote Control
■Test of the remote control
Check the remote control after checking all connections have been
correctly.
Face the remote control directly to the remote sensor on the unit.
The remote control can be used within the range shown below:
Press the POWER button. Does the power turn on? Now, you can
enjoy the music.
Remote sensor
8" - 20'
(0.2 m - 6 m )
Troubleshooting Chart
■If trouble occurs
When this product is subjected to strong external interference
(mechanical shock, excessive static electricity, abnormal supply
voltage due to lightning, etc.) or if it is operated incorrectly, it may
malfunction.
If such a problem occurs, do the following:
Caution:
This operation will erase all data stored in memory including clock,
timer settings, tuner preset, and CD program.
1 Set the unit to the stand-by mode and turn the power on
again.
2 If the unit is not restored in step 1, unplug and plug in the
unit, and then turn the power on.
3 If neither step 1 nor 2 restores the unit, do the following:
Press the POWER button to enter the power stand-by mode.
Unplug the AC power cord from the AC INPUT jack on the
unit.
While pressing down the MEMORY/SET button and the
button,plug the ACpowercordintotheACINPUTjackonthe
unit.
AC INPUT

XL-3000/3000C
– 6 –
Accessories
Accesorios
1
1
2
2
Speaker wire × 2
Cable del altavoz × 2
Remote control × 1
Controlador remoto × 1
AC power cord × 1
Cable de alimentación de CA × 1
AM loop antenna × 1
Antena de cuadro de AM × 1
FM antenna × 1
Antena de FM × 1
123
Battery installation of remote control
Instalacióndelas pilasdelcontroladorremoto
Use 2 “AAA” size batteries (UM-4, R03, HP-16 or similar).
Use dos pilas del tamaño “AAA” (UM-4, R03, HP-16 o
equivalentes).
Remove the battery
cover.
Extraigala cubierta de
las pilas.
Insert the batteries
as shown.
Inserte las pilas como
se muestra.
Replace the cover.
Vuelva a colocar la
cubierta.
Batteries are not included.
Las pilas no están incluidas.
AM loop antenna
Antena de cuadro
de AM
White line
Línea blanca
Black
Negro
Right speaker
Altavoz derecho
Left speaker
Altavoz izquierdo
AC outlet
(AC 120 V, 60 Hz)
A un tomacorriente de
CA (120 V de CA, 60 Hz)
Right speaker
Altavoz derecho
Left speaker
Altavoz izquierdo
RCA cord
(not supplied)
Cable RCA
(no suministrado)
To the line
output jack
A la toma de
salida de línea
VCR, DVD, etc.
Videograbadora,DVD,etc.
TV
TV
Connection cable
for digital recording
(not supplied)
Cable de conexión
para grabación digital
(no suministrado)
MD recorder
Grabadora de MD
To the optical line
input jack
Para la toma de
entrada de línea óptica
Headphones
Auriculares
System connections
Conexiones del sistema
3
3
FM antenna
Antena de FM
Speaker with a built-in
amplifier
Altavoz con amplificador
incorporado
Press the POWER button to turn the power on.
Pulse el botón POWER para conectar la alimentación.
Listening to a CD
Audición de un disco CD
5" (12 cm)
12 cm
3" (8 cm)
8 cm
Turn on your system
Conexión de la alimentación de su sistema
4
4
Total number of tracks
Número total de pistas
Total playing time
Tiempo total de
reproducción
1
Press the FUNCTION button
until“CDSTOP”or“NO DISC”
appears on the display.
Pulseelbotón FUNCTION hasta
que “CD STOP” o “NO DISC”
aparezca en el visualizador.
2
Press the 77
77
7 button to open
the CD compartment.
Pulse el botón
77
77
7
para abrir el
compartimiento del CD.
3
Place a CD on the spindle,
label side up.
Ponga un CD sobre el eje, con
la cara de la etiqueta arriba.
4
Press the 77
77
7 button to close
the CD compartment.
Pulse el botón
77
77
7
para cerrar
el compartimiento del CD.
5
Press the JJ
JJ
J button to start
playback from track 1.
Pulse el botón J para iniciar la
reproducción desde la pista 1.
FM stereo mode indicator
Indicador del modo de FM en estéreo
FM stereo receiving indicator
Indicador de recepción de FM en estéreo
1
Press the FUNCTION button
until “FM” or “AM” appears
on the display.
Pulse el botón FUNCTION
hasta que “FM” o “AM”
aparezca en el visualizador.
2
Press the TUNING (XX
XX
Xor WW
WW
W)
button to tune in to the de-
sired station.
When the TUNING button is
pressed for more than 0.5
seconds, scanning will start
automatically and the tuner
will stop at the first receiv-
able broadcast station.
Pulse el botón TUNING ( X o
W ) para sintonizar la emisora
deseada.
Cuando se pulse el botón
TUNING durante más de 0,5
segundos, la exploración se
iniciará automáticamente y el
sintonizador se parará en la
primera emisora difusora que
pueda recibirse.
To receive an FM stereo trans-
mission:
Press the FUNCTION button to
display the “ST” indicator.
●“jj
jj
j” will appear when an FM
broadcast is in stereo.
Para recibir una transmisión de
FM en estéreo:
Pulse el botón FUNCTION para
visualizar el indicador “ST”.
● “ j ” aparecerá cuando una
difusióndeFMseaen estéreo.
Listening to the radio
Audición de la radio

– 7 –
XL-3000/3000C
1 Rear Panel/Terminal PWB 1. Screw .................. (A1) x7 7-1
2. Socket ................. (A2) x3
3. Screw .................. (A3) x4 7-1,2
2 Top Cabinet 1. Screw .................. (B1) x2 7-2
2. Hook .................... (B2) x5
3. Flat Cable............ (B3) x1
4. Socket ................. (B4) x7
3 Tuner PWB 1. Screw .................. (C1) x2 8-1
2. Socket ................. (C2) x1
4 Power PWB 1. Socket ................. (D1) x1 8-1
2. Hook .................... (D2) x1
5 Main PWB 1. Socket ................. (E1) x1 8-1
2. Screw .................. (E2) x8
6 Display PWB 1. Screw .................. (F1) x4 8-2
2. Hook .................... (F2) x4
7 CD Mechanism 1. Screw .................. (G1) x4 8-2
8 Gear Box 1. Screw .................. (H1) x1 8-2
2. Holder.................. (H2) x1
3. Lever ................... (H3) x1
4. Screw .................. (H4) x2
5. Lever ................... (H5) x1
9 LED PWB 1. Screw .................. (J1) x1 8-2
DISASSEMBLY
STEP REMOVAL PROCEDURE FIGURE
Note:
After removing the connector for the optical pickup from the
connector, wrap the conductive aluminium foil around the
front end of connector remove to protect the optical pickup
from electrostatic damage.
Caution on Disassembly
Follow the below-mentioned notes when disassembling
the unit and reassembling it, to keep it safe and ensure
excellent performance:
1. Take compact disc out of the unit.
2. Be sure to remove the power supply plug from the wall
outlet before starting to disassemble the unit.
3.Take offnylon bandsor wireholders wherethey need to
beremovedwhendisassemblingtheunit.Afterservicing
theunit, besure torearrange theleads wherethey were
before disassembling.
4. Take sufficient care on static electricity of integrated
circuits and other circuits when servicing.
(A1) x2
ø3 x10mm
(A1) x3
ø3 x10mm
(A1) x2
ø3 x10mm
Rear Panel
Top Cabinet
(A2) x3
(A3) x3
ø3 x10mm
Rear Panel
Terminal PWB
Figure 7-1
Bottom Cabinet
(B1) x2
ø2.5 x8mm
(B4) x2
(B4) x4 (B3) x1
Main PWB
(A3) x1
ø3 x8mm
Lug
Hook
(B2) x3
HOOK
(B2) x2
(B4) x1
CD Mechanism
Hook
Up
Slide
Top Cabinet
Top Cabinet
Bottom Cabinet
Power PWB
Figure 7-2

XL-3000/3000C
– 8 –
(E2) x7
ø3 x8mm
(E2) x1
ø3 x14mm
(C1) x1
ø3 x6mm
(D1) x1
(E1) x1
Power PWB
Main PWB
(D2) x1
Hook
(C1) x1
ø3 x8mm
Holder PWB
Tuner PWB
Main PWB
(C2) x1
Tuner PWB
(C2) x1
Bottom Cabinet
Figure 8-1
Figure 8-2
(G1) x4
ø2.5 x10mm
(H1) x1
ø3 x8mm
(H2) x1
(H5) x1
(H4) x2
ø2.5 x10mm
(J1) x1
ø2.5 x10mm
(F1) x4
ø2.5 x10mm
Hook
(F2) x4
Display PWB
LED PWB
Switch PWB
Gear Box
CD Mechanism
Bracket
Top Cabinet
Holder PWB
(H3) x1
1 Speaker 1. Net Frame ........... (A1) x1 8-3
2. Front Panel ......... (A2) x1
3. Screw .................. (A3) x6
STEP REMOVAL PROCEDURE FIGURE
( A3 ) x2
ø4 x12mm
( A3 ) x4
ø4 x12mm
Tweeter
Woofer
Net Frame
( A1 ) x1
Front Panel
( A2 ) x1
Screwdriver
Figure 8-3

– 9 –
XL-3000/3000C
How to remove the CD lid (See Fig. 9-1.)
Performsteps1,2and8ofthedisassemblymethodtoremove
the gear box.(See page 7,8)
1. Remove the switch PWB.
2. Remove the screws (A1) x 4 pcs., to remove the gear box
lid.
3. Remove the gears (A2) x 1 pc. and (A3) x 1 pc.
4. Remove the screws (A4) x 2 pcs., to remove the motor.
Caution:
Be careful so that the gear is not damaged.
(The damage gear emits noise during searching.)
REMOVING AND REINSTALLING THE MAIN PARTS
Figure 9-1
Figure 9-2
(A1) x1
ø2.5 x10mm
(A1) x3
ø2.5 x12mm
(A2) x1
(A3) x1
(A4) x2
ø2 x5mm Switch PWB
CD Lid Motor
CD MECHANISM SECTION (See Fig. 9-2.)
Performsteps1,2and7ofthedisassemblymethodtoremove
the CD mechanism.
1. Remove the mechanism cover, paying attention to the
pawls (A1)x 4 pcs.
2. Remove the screws (A2) x 2 pcs., to remove the shaft (A3)
x 1 pc.
3. Remove the stop washer (A4) x 1 pc., to remove the gear
(A5) x 1 pc.
4. Remove the pickup.
Note:
After removing the connector for the optical pickup from the
connector, wrap the conductive aluminium foil around the
front end of connector remove to pretect the optical pickup
from electrostatic damage.
Pickup unit
(A2) x2
ø2.6 x6mm
(A1) x4
CD Mechanism
Shaft
(A3) x1
Gear
(A5) x1
Stop Washer
(A4) x1
Mechanism Cover

XL-3000/3000C
– 10 –
ADJUSTMENT
TUNER SECTION
AM
GND
FM
75
OHMS
ANTENNA
TERMINAL
SO301
T302
IC301
T306
T304
IC303
T351
L303
L302
VR351
TP301
FM Mute
Level
AM Band
Coverage fL
FM Band
Coverage fL AM
Tracking fL
AM IF
FM IF
FM OSC.
FM ANT.
FM RF
IC302
20
TUNER PWB-A2
1
Adjusting
Parts
Display
Frequency
• Setting the Test Mode
Keeping the FF/FWD button and MEMORY/SET button
pressed, turn on POWER. Then, the frequency is initially set
inthememoryasshowninTable.CallitwiththeVOLUMEUP/
DOWN button to use it for adjustment and check of tuner
circuit.
Preset No. FM Preset No. AM
1 87.5 MHz 6 530 kHz
2 108.0 MHz 7 1,720 kHz
3 98.0 MHz 8 990 kHz
4 90.0 MHz 9 600 kHz
5 106.0 MHz 10 1,400 kHz
• FM Mute Level
Signal generator: 1 kHz, 40 kHz dev., FM modulated
*1. Adjust so that an output signal appears.
• FM Detection
Signal generator: 10.7 MHz, FM sweep generator
98.00 MHz 98.00 MHz VR351*1 Input: SO301
(30 dBµV) Output: Speaker
Terminal
Instrument
Connection
*1. Input: Antenna, Output: Speaker Terminal
*2. Input: Input is not connected, Output: TP301
Frequency Frequency Display Setting/
Adjusting
Parts
Instrument
Connection
AM IF 450 kHz 1,620 kHz T351 *1
AM Band — 522 kHz (fL): T306 *2
Coverage 1.1 ±0.1 V
AM 990 kHz 990 kHz (fL): T302 *1
Tracking
fL: Low-range frequency
fH: High-range frequency
Signal generator: 400 Hz, 30%, AM modulated
• AM IF/RF
Figure 10-1 ADJUSTMENT POINTS
*1. Input: Antenna, Output: TP301
*2. Input: Antenna, Output: Speaker Terminal
Test Stage Frequency Display Setting/
Adjusting
Parts
Instrument
Connection
FM Band — 87.5 MHz (fL): L303 *1
Coverage 3.4 ±0.1 V
FM RF 98.00 MHz 98.0 MHz L302 *2
(10~30 db)
Signal generator: 1 kHz, 75 kHz dev., FM modulated
• FM RF
Frequency
FM IF 10.7 MHz 98.0 MHz T304(Turn Input: Pin 1 of
the core of IC301
T304 fully
counter-
clockwise.)
Test
Stage Frequency Frequency
Display Setting/
Adjusting
Parts
Instrument
Connection