Sharp XL 1700 - Executive Microsystem User manual

– 1 –
XL-1700/1700C
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 ............................................................................................................................. 18
TYPES OF TRANSISTOR AND LED.............................................................................................................................. 18
BLOCK DIAGRAM .......................................................................................................................................................... 19
SCHEMATIC DIAGRAM ................................................................................................................................................. 22
WIRING SIDE OF P.W.BOARD...................................................................................................................................... 30
WAVEFORMS OF CD CIRCUIT..................................................................................................................................... 34
TROUBLESHOOTING.................................................................................................................................................... 35
FUNCTION TABLE OF IC .............................................................................................................................................. 41
LCD SEGMENT .............................................................................................................................................................. 43
PARTS GUIDE/EXPLODED VIEW
PACKING OF THE SET (FOR U.S.A. ONLY)
SERVICE MANUAL
SHARP CORPORATION
No. S4221XL1700//
• 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.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
XL-1700 Compact Audio System consisting of XL-1700
(main unit) and CP-XL1700U (speaker system).
COMPACT AUDIO SYSTEM
MODEL XL-1700
XL-1700CCompactAudioSystemconsistingofXL-1700C(main
unit) and CP-XL1700U (speaker system).
MODEL XL-1700C

XL-1700/1700C
– 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
SPECIFICATIONS
Specifications for this model are subject to change without
prior notice.
■General
■Amplifier
■CD player
■Tuner
■Speaker
Power source AC 120 V, 60 Hz
Power consump-
tion 35 W
Dimensions Width: 8-15/16" (226 mm)
Height: 5-3/4" (145 mm)
Depth: 11-1/2" (292 mm)
Weight 6.2 lbs. (2.8 kg)
Output power 8 watts minimum RMS per channel into 8
ohms from 100 Hz to 20 kHz, 10% total har-
monic distortion
Output terminals Speakers: 8 ohms
Headphones: 16 - 50 ohms (recommended:
32 ohms)
CD digital output (optical)
Subwoofer (Audio signal): 500 mV/47 k
ohms
Input terminals Video/Auxiliary (audio signal): 500 mV/47 k
ohms
Type Compact disc player
Signal readout Non-contact, 3-beam semiconductor laser
pickup
D/A converter 1-bit D/A converter
Frequency re-
sponse 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
Tweeter
4" (10 cm) Woofer
Maximum input
power 20 W
Rated input power 10 W
Impedance 8 ohms
Dimensions Width: 5-3/4" (146 mm)
Height: 10-9/16" (267 mm)
Depth: 7-3/8" (186 mm)
Weight 3.5 lbs. (1.6 kg)/each
■Amplifier
Output power RMS: 20 W (10 W + 10 W) (10 % T.H.D.)
Output terminals Speakers: 8 ohms
Headphones: 16 - 50 ohms (recommended:
32 ohms)
CD digital output (optical)
Subwoofer (Audio signal): 500 mV/47 k
ohms
Input terminals Video/Auxiliary (audio signal): 500 mV/47 k
ohms
XL-1700
XL-1700C

– 3 –
XL-1700/1700C
NAMES OF PARTS
■Front panel
1.CD Compartment
2.CD Open/Close Button
3.Power Button
4.Function Selector Button
5.Bass/Treble Selector Button
6.Memory/Set Button
7.Clear Button
8.CD Stop, Tuning Down Button
9.CD Track Up or Fast Forward,
Tuner Preset Up Button
10.CD Track Down or Fast Reverse,
Tuner Preset Down Button
11.Volume Up and Down Buttons
12.CD Play or Pause, Tuning 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
12345
79
68
1
2
3
4
5
6
7
8
9
10
11
12
■Rear panel
1.Subwoofer Output Jack
2.CD Digital Output Jack
3.Headphone Jack
4.AM Antenna Terminal
5.Antenna Earth Terminal
6.FM 75 Ohms Antenna Jack
7.Video/Auxiliary (Audio Signal) Input Jacks
8.Speaker Terminals
9.AC Power Input Jack
■Speaker system
1.Tweeter
2.Woofer
3.Bass Reflex Duct
4.Speaker Terminals
1
2
4
3
4
3
2
1
5
6
7
8
9
Speaker grilles are removable:
Make sure nothing comes into contact with the
speaker diaphragms when you remove 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 shielded.
Therefore, they do not affect the display even if you use them near
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.

XL-1700/1700C
– 4 –
■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.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
26 27
17 21
23
18
19
20
24 25
22

– 5 –
XL-1700/1700C
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 (AM12:00) 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. If the time display is
flashing, step 2 (for selecting the 12-hour or 24-hour display) will be
skipped.
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 auto-
matically to "PM".
4
Within 1 minute, press the PRESET ( or ) button to
adjust the minutes and then press the MEMORY button.
The clock starts from "0" second. (Seconds are not displayed.)
1 Clear all the programmed contents.
2 Perform "Setting the clock" from the beginning.
Remote control
■Test of the remote control
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 your music.
8" - 20'
(0.2 m - 6 m)
Remote sensor
■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.
Troubleshooting Chart
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 AC power cord into the AC INPUT jack on the
unit.
AC INPUT

XL-1700/1700C
– 6 –
Accessories
Accesorios
1
1
2
2
Speaker wire x2
Cable del altavoz x2
Remote control x1
Controlador remoto x1
AC power cord x1
Cable de alimentación de CA x1
AM loop antenna x1
Antena de cuadro de AM x1
FM antenna x1
Antena de FM x1
123
Battery installation of remote control
Instalaciónde laspilasdelcontroladorremoto
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.
Extraigalacubierta 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
Turn on your system
Conexión de la alimentación de su sistema
4
4
1
Press the FUNCTION button
until “CD STOP” appears on
the display.
If no disc is loaded, the
display will be “NO DISC”
instead of “CD STOP”.
PulseelbotónFUNCTION hasta
que aparezca “CD STOP” en el
visualizador.
Si no hay ningún disco insertado,
sevisualizará“NODISC”enlugar
de “CD STOP”.
2
Press the 77
77
7 OPEN/CLOSE
button to open the CD com-
partment.
Pulse el botón
77
77
7
OPEN/
CLOSE 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 OPEN/CLOSE
button to close the CD com-
partment.
TheCD playback willstart
automatically.
Pulse el botón
77
77
7
OPEN/
CLOSE para cerrar el
compartimiento del CD.
La reproducción del CD se
iniciará automáticamente.
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
difusión de FM sea en estéreo.
Listening to the radio
Audición de la radio

– 7 –
XL-1700/1700C
1 Top Cabinet 1. Screw .................. (A1) x4 7-1,2
2. Socket ................. (A2) x9 7-2
2 Cover,Rear panel 1. Screw .................. (B1) x3 7-1
3 Chassis 1. Screw .................. (C1) x5 7-3
2. Screw .................. (C2) x4 7-1
3. Hook .................... (C3) x4 7-3
4 Tuner PWB 1. Screw .................. (D1) x1 8-1
2. Socket ................. (D2) x1
5 Terminal PWB 1. Screw .................. (E1) x2 8-1
2. Socket ................. (E2) x2
6 Rear Panel 1. Screw .................. (F1) x1 8-1
7 Main PWB 1. Screw .................. (G1) x5 8-1
2. Screw .................. (G2) x2
3. Socket ................. (G3) x2
8 CD PWB 1. Flat Cable............ (H1) x1 8-2
2. Socket ................. (H2) x2
3. Screw .................. (H3) x4
9 CD Mechanism 1. Screw .................. (J1) x4 8-2
10 LED PWB 1. Screw .................. (K1) x2 8-2
11 Switch PWB 1. Hook .................... (L1) x2 8-3
2. Socket ................. (L2) x1
12 Display PWB 1. Screw .................. (M1) x6 8-3
2. Socket ................. (M2) x1
13 Gear Box 1. Hook .................... (N1) x3 8-3
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. Cover,
Rear Panel
Top Cabinet (B1) x1
ø3 x10mm
(A1) x2
ø3 x10mm
(B1) x1
ø3 x10mm
(B1) x1
ø3 x6mm (C2) x4
ø3 x10mm
Figure 7-1
Cover,
Rear Panel
Top Cabinet
(A2) x8
(A2) x1
Bottom Cabinet
(A1) x2
ø3 x10mm
Figure 7-2
,

Hook
(C3) x4
(C1) x5
ø3 x6mm
Bottom Cabinet
Chassis
Bottom
Cabinet
Chassis
1
2
Figure 7-3

XL-1700/1700C
– 8 –
Figure 8-1
Terminal PWB
Rear Panel
Main PWB Tuner PWB
(G1) x5
ø3 x8mm
(E1) x2
ø3 x10mm
(G2) x2
ø3 x10mm
(G3) x2
(E2) x1
(E2) x1
(D1) x1
ø3 x10mm
(D2) x1
(F1) x1
ø3 x6mm
Chassis
Figure 8-3
Display PWB
CD
Mechanism
Top Cabinet
Holder PWB
CD PWB
LED PWB
Holder,
Indicator Panel,CD
(J1) x4
ø2.5 x10mm
(H1) x1 (H2) x1
(H2) x1
(H3) x4
ø2.5 x10mm
(K1) x2
ø2.5 x10mm
Display PWB
Gear Box
Switch
PWB
Top Cabinet
(L2) x1
Hook
(L1) x2
Hook
(N1) x3
(M2) x1
(M1) x6
ø2.5 x10mm
Switch
PWB
Switch
Hook
(L1) x2
Pull Pull

Pull Pull


,

,

,

Gear Box
Hook
(N1) x3
( A3 ) x4
ø3.5 x12mm
Tweeter
Net Frame
( A1 ) x1
Front Panel
( A2 ) x1
Woofer
Screwdriver
Figure 8-2
1 Speaker 1. Net Frame ........... (A1) x1 8-4
2. Front Panel ......... (A2) x1
3. Screw .................. (A3) x4
STEP REMOVAL PROCEDURE FIGURE
Figure 8-4

– 9 –
XL-1700/1700C
How to remove the CD lid (See Fig. 9-1.)
Perform steps 1 to 13 of the disassembly method to remove
the gear box.(See page 7,8)
1. Remove the screws (A1) x 2 pcs., to remove the CD lid
motor.
2.Removethehooks(A2)x3pcs.,toremovethewormwheel.
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) x2
ø2 x3mm
Hook
(A2) x3
CD Lid Motor
Worm Wheel
CD MECHANISM SECTION (See Fig. 9-2.)
Performsteps1to 9ofthedisassemblymethodtoremovethe
CD mechanism.(See page 7,8)
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 unit.
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-1700/1700C
– 10 –
ADJUSTMENT
TUNER SECTION
AMGND
FM
75
OHMS
ANTENNA
TERMINAL
SO301
T302
FE301
T306
IC303
T351
VR351
TP301
FM Mute
Level AM Band
Coverage fL
AM
Tracking fL
AM IF
IC302
20
TUNER PWB-B1
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 87.50 MHz 6 522 kHz
2 108.00 MHz 7 1,620 kHz
3 98.00 MHz 8 990 kHz
4 90.00 MHz 9 603 kHz
5 106.00 MHz 10 1,404 kHz
• FM Mute Level
Signal generator: 1 kHz, 40 kHz dev., FM modulated
*1. Adjust so that an output signal appears.
Check Point Instrument
Connection
Display
Frequency
87.5 MHz 87.5 MHz 2.2 V ±0.7 V TP301
108 MHz 108 MHz 7.3 V ±1.0 V TP301
• Check FM VT
Signal generator: 1 kHz, 40 kHz dev., FM modulated
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 ADJUSTMENT POINTS