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

– 11 –
XL-3000/3000C
TEST MODE
The test mode applied to this microcomputer has three modes, namely the ordinary test mode for adjustment or measurement,
the aging test mode, and the self-diagnosis test mode for self-judgment in case of final product inspection.
1. Turning on the test mode
Forobtainingeachtestmode,pressthePOWERbutton,whilekeepingpressingthefollowingtwobuttonsintheordinarystand-
by mode (power off ). In this case, the main unit buttons are valid. When turning the POWER on with remote control buttons,
test modes are not obtained.
[Ordinary test mode]
1. CD Test Mode (TEST 1).................................... REW/PRESET DOWN + VOLUME UP
2. Tuner Test Mode (TEST 2).................................REW/PRESET DOWN + CD PLAY
3. Electronic Volume Test Mode (TEST 3)............. REW/PRESET DOWN + FF/PRESET UP
4. Timer Test Mode (TEST 4)................................. FUNCTION + VOLUME UP
5. LCD Test Mode (TEST 5)................................... FUNCTION + FF/PRESET UP
6. Electric CD Lid Aging Test Mode (TEST 8)........ FUNCTION + CD PLAY
Processes are different depending on destinations at initial settings.
2. CD Test Mode (TEST 1)
In the CD test mode the operation of each step is possible even if the LID-SW is off. If focus cannot be taken in step 3 or any
error is processed, it is impossible to proceed to the next step. During error processing, end the test mode by pressing the
POWER button or return to the step 1 by pressing the CD STOP button. Any other operations are inhibited.
1. Step 1 Mode
When the CD test mode is obtained, the following display lights up. Then CD initialization operation flow proceeds up to CD
STB off to wait for the following buttons to be pressed.
One second after display lights up
Press the following buttons in this state to obtain the operations specified below.
"POWER".................Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD".................After the pickup returns to the innermost periphery, it slides toward the outer periphery while this button
is pressed.
"REW/REV"..............After the pickup returns to the innermost periphery, it slides toward the inner periphery while this button
is pressed. If PICKUP IN is on, input is invalid.
"PLAY" .....................Shift to step 2
"STOP".....................Invalid
"FUNCTION"............Shift to step 5
FUNCTION + VOLUME
[Self-diagnosis Test Mode]
1. Button input diagnosis test mode (TEST6)........

XL-3000/3000C
– 12 –
Press the following buttons in this state to obtain the operations specified below.
"POWER" ................Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD" ................The pickup slides toward the outer periphery while this button is pressed.
"REW/REV" .............The pickup slides toward the inner periphery while this button is pressed. If PICKUP IN is on, input is
invalid.
"PLAY".....................If focus has been taken, shift to step 4 is executed. If not, acceptance is inhibited.
"STOP" ....................Return to step 1
"FUNCTION" ...........Shift to step 5
*If the focus is not received after it has been taken, the process returns to step 1.
3. Step 3 Mode
While the laser keeps lighting, CD initialization operation flow proceeds up to 'CLV servo ON' to wait for the following buttons
to be pressed.(Focus servo turned on for focus search)
The focus search is repeated to take focus.
Press the following buttons in this state to obtain the operations specified below.
"POWER" ................Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD" ................The pickup slides toward the outer periphery while this button is pressed.
"REW/REV" .............The pickup slides toward the inner periphery while this button is pressed. If PICKUP IN is on, input is
invalid.
"PLAY".....................Shift to step 3
"STOP" ....................Return to step 1
"FUNCTION" ...........Shift to step 5
2. Step 2 Mode
Pressthe "CD PLAY"button inthis mode totransmit thelaser lighting command LDON (8400)and turnon the laser. Anyother
operations are not performed in this case.
* In case of initialization, the pickup is moved toward the inner periphery. Any buttons other than "POWER" button are not
accepted until the shift of pickup to the inner periphery is completed at this time. If PICKUP IN SW ON cannot be detected
within 10 seconds, the slide motor stops, and the following error display appears. Press the POWER button to end the test
mode, or press the CD STOP button to return to step 1. Any other operations are inhibited.

– 13 –
XL-3000/3000C
The time display always indicates "0:00".
Press the following buttons in this state to obtain the operations specified below.
"POWER" ................Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD" ................The pickup slides toward the outer periphery while this button is pressed.
"REW/REV" .............The pickup slides toward the inner periphery while this button is pressed. If PICKUP IN is on, input is
invalid.
"PLAY".....................Shift to step 5
"STOP" ....................Return to step 1
"FUNCTION" ...........Shift to step 5
*If the focus is not received, the process returns to step 1.
4. Step 4 Mode
The CLV servo ON command (8600) is transmitted to wait for the following buttons to be pressed. (The disc is rotated for CLV
lock.)
Press the following buttons in this state to obtain the operations specified below.
"POWER".................Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD".................The pickup slides toward the outer periphery while this button is pressed.
"REW/REV"..............The pickup slides toward the inner periphery while this button is pressed. If PICKUP IN is on, input is
invalid.
"PLAY" .....................Invalid
"STOP".....................Return to step 1
"FUNCTION" ...........Shift to step 6
"MEMORY"..............Shift to step 7
*If the is not received, the process returns to step 1.
Other cautions
• TOC IL is not available for this test mode.
5. Step 5 Mode
WhentheCDinitializationoperationflowiscompleted,themuteisturnedoff,andplaybackisstarted. Evenifplaybackreaches
the outermost periphery of disc, the operation does not stop. The LCD display indicates the playback passage time as in case
of ordinary CD playback.

XL-3000/3000C
– 14 –
Press the following buttons in this state to obtain the operations specified below.
"POWER".................Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD".................The pickup slides toward the outer periphery while this button is pressed.
"REW/REV"..............The pickup slides toward the inner periphery while this button is pressed. If PICKUP IN is on, input is
invalid.
"PLAY" .....................Invalid
"STOP".....................Return to step 1
"FUNCTION" ...........Shift to step 5
"MEMORY"..............Shift to step 7
Press FF/PRESET UP or REW/PRESET DOWN button to slide the pickup. The number of errors accumulated up to that time
is cleared and addition is restarted after shift.
*If the focus is not received, the process returns to step 1.
6. Step 6 Mode
Press the FUNCTION button during step 5 operation to set EC/FC bit to "H" by PROSET command (9188 transmission) and
to monitor BUS2 (QDRE) during idle mode. The number of errors for 1 frame (1 sub-code block in IC data) is read by read
command SRC6 during "H". The number of errors accumulated in 750 frames for 10 seconds is displayed on LCD. During the
display, music signal is played back.

– 15 –
XL-3000/3000C
Press the following buttons in this state to obtain the operations specified below.
"POWER".................Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD".................The pickup slides toward the outer periphery while this button is pressed.
"REW/REV"..............The pickup slides toward the inner periphery while this button is pressed. If PICKUP IN is on, input is
invalid.
"PLAY" .....................Invalid
"STOP".....................Return to step 1
"FUNCTION" ...........Shift to step 6
"MEMORY"..............Shift to step 5
*If the focus is not received, the process returns to step 1.
7. Step 7 Mode
Press "MEMORY" key during step 6 operation to display automatically adjusted values on LCD in the order as below. Item
namesaredisplayed byleftalignment, and adjustedvaluesby rightalignment inhexadecimalnumbers. Operations otherthan
display are as same as those for step 5.
a) "Fb" is displayed on the left of LCD. FTBAST command (D480) is transmitted to designate focus balance adjusting
register. Then data read by read command SRC2 (2) are displayed in hexadecimal numbers. After waiting 2 seconds,
operation is shifted to (b).
b) "FG" is displayed on the left of LCD. FTBAST command (D481) is transmitted to designate focus gain adjusting register.
ThendatareadbyreadcommandSRC2(2)aredisplayedinhexadecimalnumbers. Theuppertwobits,whichareinvalid,
are displayed as "00". After waiting two seconds, operation is shifted to (c).
c) "Tb" is displayed on the left of LCD. FTBAST command (D482) is transmitted to designate tracking balance adjusting
register. Then data read by read command SRC2 (2) are displayed in hexadecimal numbers. After waiting 2 seconds,
operation is shifted to (d).
d)"TG"isdisplayedontheleftofLCD. FTBASTcommand(D483)istransmittedtodesignatetrackinggainadjustingregister.
ThendatareadbyreadcommandSRC2(2)aredisplayedinhexadecimalnumbers. Theuppertwobits,whichareinvalid,
are displayed as "00". After waiting 2 seconds, operation is shifted to (e).
e)"FO"isdisplayedontheleftofLCD. FTBASTcommand(D484)istransmittedtodesignatefocusoffsetadjustingregister.
Then data read by read command SRC2 (2) are displayed in hexadecimal numbers. After waiting 2 seconds, operation
is shifted to (f).
f) "TO" is displayed on the left of LCD. FTBAST command (D485) is transmitted to designate tracking offset adjusting
register. Then data read by read command SRC2 (2) are displayed in hexadecimal numbers. After waiting 2 seconds,
operation is shifted to (g).
g)"FF"isdisplayedontheleftofLCD. FTBASTcommand(D486)istransmittedtodesignateRFamplitudeadjustingregister.
Then data read by read command SRC2 (2) are displayed in hexadecimal numbers. After waiting 2 seconds, operation
is shifted to (a).

XL-3000/3000C
– 16 –
3. Tuner Test Mode (TEST 2)
1. Outline of tuner (radio) test mode
The tuner test mode is intended to store the adjustment and measurement frequencies in the preset memory CH. When
adjusting the tuner section in the production line, adjusting personnel are not required to set frequency.
2. Details of tuner test mode
Press the "REW/PRESET DOWN" and "CD PLAY" buttons in POWER OFF state and turn on the power by the use of
"POWER" button to preset and store frequency for adjustment and measurement of destination specified by the AREA
terminal in the preset memory CH. However, Ordinary 1 and Ordinary 2 are stored in the destinations (selected by SPAN
switching operation) when the test mode is obtained.
("FF " + "MEMORY/SET" KEY SPAN CHANGE)
(As for frequencies to be preset and stored for each destination, refer to item 3.)
The tuner test mode is started from preset No.1.
The operations of test mode are identical with the ordinary operations of TUNER function. FUNCTION switching is invalid.
It is necessary to discard the content of preset memory when the tuner test mode is ended; be sure to write "0000" or "1111"
bits in the memory to be checked for judging memory error at initial setting and to initialize memory.
When the tuner test mode is obtained, the following display lights for one second.
• The TUNER TEST2 mode is obtained with >> + MEMORY + POWER. ->Turn off AC in the TEST2 mode to restore the initial
state.
Turn off POWER to protect the memory of TEST2 mode.
Turn off POWER again to obtain the ordinary operation while the data is stored in the memory (besides TUNER).
If AC OFF state is maintained in this state for about 1/2 day, start is executed in the initial state.
• To clear the whole memory, insert the AC cord, pressing MEMORY + CD PLAY.
3. Preset frequencies for various destinations (random preset memory)
• The slant line sections of the table store no memory.
BAND
16-25
26 FM106.0 MHz
27 FM 90.0 MHz
28 FM FM 98.0 MHz
29 MONO FM108.0 MHz
30 FM 87.5 MHz
FM
CH
BAND
1 FM 87.5 MHz
2 FM108.0 MHz
3 FM FM 98.0 MHz
4 STEREO FM 90.0 MHz
5 FM106.0 MHz
FM
CH BAND
6 AM 530 kHz
7 AM1,720 kHz
8 AM AM 990 kHz
9 AM 600 kHz
10 AM1,400 kHz
AMCH

– 17 –
XL-3000/3000C
4. Electronic volume Test Mode (TEST 3)
When this test mode is obtained, the following display lights for one second.
Inthismode,volumeis-14dB(STEP28),BASS/TREBLEissetto0(0dB)andSURROUNDmodetoOFF,andstart-upfunction
to CD, respectively. The button operations in the test mode are the same as those of ordinary operation except volume UP/
DOWN.
(1) The display is the same as that of ordinary operation except test mode setting.
(2) Unlikethe ordinarystate,the volumeiscontrolled withthevolume UP/DOWNbuttonin accordancewiththe followingthree
steps.
Volume- ∞(STEP 0) <-> Volume-14 dB (STEP 23) <-> Volume-0 (STEP 30)
(3) BASS/TREBLE and SURROUND are switched when button is pressed..
Set the current time and timer time according to the following procedure to reproduce the timer.
1.Set the current time to 1:00, the timer to ON time 1:05, the function to CD, and volume to STEP 12, respectively. One minute
is counted as one second, and the timer is reproduced. The fade-in (when playback is started) is executed at a rate of one
step for 1 sec. After completion of fade-in, the fade-out is executed at a rate of one step for 1 sec (WAIT 1 sec inserted).
After completion of fade-out, the power is turned off (after WAIT 1 sec), and the mode is shifted to the standby.
The display during operation is the same as that of ordinary timer operation.
5. Timer test Mode (TEST 4)
When this test mode is obtained, the following display lights for one second.

XL-3000/3000C
– 18 –
6. LCD Test Mode (TEST 5)
When the LCD test mode is obtained, all the LCD segments are lighted. Then pressing the "PLAY" button switches display as
below.
Lighting of all segments Lighting of odd segments Lighting of even segments
Thistestmodeisintendedtocheckwhetherallthemainunitbuttonscanbedetected. Accordingly,inthistestmode,itischecked
whetherthe"POWER" buttonwaspressed afterallthe buttons shownbelowwere pressed. Iftheresult isOK, OKisdisplayed.
Ifanyoneofkeyswasnotpressed,anerrorisdisplayed. InbothcasesofOKterminationorerrortermination,themodeisshifted
to the standby mode if the "POWER" button is pressed subsequently.
Allmodelsusingthistypeofmicrocomputerarenotalwaysprovidedwiththesamebuttons. Sincethebuttonsusedaredifferent
depending on models, types of buttons to be used are determined by whether SURROUND, and an electric lid are available
at the initial setting by MODEL port.
The order of buttons to be pressed is not determined. Accordingly, it is checked whether all buttons have been pressed.
1. PU-IN buttons: REW/PRESET DOWN + CD STOP
Since this model is provided with SURROUND (HAVE OR NOT), and electric CD lid, the following 10 buttons are detected
as all buttons.
PLAY, BASS/TREBLE, FUNCTION, VOLUME UP/DOWN, MEMORY/SET, REW, FF, STOP, CD-OPEN/CLOSE
The OK/NG display of test result is as follows.
7. Key input diagnosis Test Mode (TEST 6)
When the test mode is obtained, the following is displayed.

– 19 –
XL-3000/3000C
a. POWER ON for function AUX
CD lid position is checked.
CLOSE position: Operation proceeds to the next process.
Position other than CLOSE: After the lid moves to CLOSE, operation proceeds to the next process.
b. CD lid operation started
OPEN operation
WAIT 1 second
CLOSE operation
WAIT 1 second
c. Operations above are repeated.
Specified monitoring time
OPEN operation: 5 seconds
CLOSE operation: 5 seconds
8. Electric CD lid Aging Test Mode (TEST 8) (Only for model with electric CD lid)
Outline
OPEN/CLOSE operations of electric CD lid are repeated. The number of repeated times and time period are monitored. If the
liddoesnotmovetotheregularpositionafterthespecifiedtime,operationisstopped.Whenanerrorisdetectedby[CLID_PRO]
during CLOSE, operation is also stopped.
d. Display
OPEN>CLOSE is counted as 1. I to 59999 are counted; if the count is over
59999, display is returned to 0 to repeat counting.
Displaywhen thelid doesnot moveto theregular positionafter thespecified
time
(Ex: Defective operation occurring in the middle of 1538.)
Highlight display of stop when an error is detected by [CLID-PRO]
(Ex: Defective operation occurring in the middle of 1538.)

XL-3000/3000C
– 20 –
NSW801 PICKUP IN ON—OFF
SW709 POWER ON—OFF
SW710 CD LID OPEN/CLOSE ON—OFF
SW711 FF/PRESET UP ON—OFF
SW712 CD PLAY/PAUSE/TUNING UP ON—OFF
SW713 VOLUME UP ON—OFF
SW718 VOLUME DOWN ON—OFF
•The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chas-
sis with no signal given.
1. In the tuner section,
( ) : AM mode
: FM stereo mode
2. In the CD section, the CD is stopped.
•Parts marked with “ ” ( ) are important for
maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and
performance of the set.
NOTES ON SCHEMATIC DIAGRAM
•Resistor:
To differentiate the units of resistors, such symbol as K and
M are used: the symbol K means 1000 ohm and the symbol
M means 1000 kohm and the resistor without any symbol is
ohm-type resistor. Besides, the one with “Fusible” is a fuse
type.
•Capacitor:
To indicate the unit of capacitor, a symbol P is used: this
symbol P means micro-micro-farad and the unit of the
capacitor without such a symbol is microfarad. As to
electrolyticcapacitor,theexpression“capacitance/withstand
voltage” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
•Schematic diagram and Wiring Side of P.W.Board for this
model are subject to change for improvement without prior
notice.
REF. NO DESCRIPTION POSITION POSITIONREF. NO DESCRIPTION
SW721 BASS/TREBLE ON—OFF
SW722 MEMORY SET ON—OFF
SW725 CD STOP/TUNING DOWN ON—OFF
SW726 REW/PRESET DOWN ON—OFF
SW727 FUNCTION ON—OFF
SW802 CD LID ON—OFF
ECB
(S)(G)(D)
FRONT
VIEW
FRONT
VIEW
BCE
FRONT
VIEW
2SB562 C
2SC535 C
2SK246 GR
KRA102 M
KRC102 M
KRC104 M
KRC107 M
KTA1266 GR
KTC3199 GR
KTC3200 GR 2SD2012 Y DB5306X SVC348S
KDV147B
1 2 3
(1) (2) (3)
Figure 20 TYPES OF TRANSISTOR AND LED