XL-T300 (serv.man20) - Sharp Audio Service Manual (repair manual)

xl-t300 (serv.man20) service manual
Model
XL-T300 (serv.man20)
Pages
60
Size
2.85 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / System
File
xl-t300-sm20.pdf
Date

Read Sharp XL-T300 (serv.man20) Service Manual online

– 1 –
XL-T300H
 CONTENTS
Page
SAFETY PRECAUTION FOR SERVICE MANUAL ..........................................................................................................  2
 IMPORTANT SERVICE NOTES (FOR U.K. ONLY) .........................................................................................................  2
SPECIFICATIONS ............................................................................................................................................................  3
NAMES OF PARTS ..........................................................................................................................................................  4
OPERATION MANUAL .....................................................................................................................................................  6
DISASSEMBLY .................................................................................................................................................................  8
REMOVING AND REINSTALLING THE MAIN PARTS ..................................................................................................  10
ADJUSTMENT ................................................................................................................................................................  12
TEST MODE ...................................................................................................................................................................  13
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................  20
 TYPES OF TRANSISTOR AND LED ..............................................................................................................................  20
BLOCK DIAGRAM ..........................................................................................................................................................  21
 SCHEMATIC DIAGRAM .................................................................................................................................................  24
 WIRING SIDE OF P.W.BOARD ......................................................................................................................................  34
 WAVEFORMS OF CD CIRCUIT .....................................................................................................................................  38
TROUBLESHOOTING ....................................................................................................................................................  39
FUNCTION TABLE OF IC ..............................................................................................................................................  45
 LCD SEGMENT ..............................................................................................................................................................  47
PARTS GUIDE/EXPLODED VIEW
 PACKING METHOD (FOR U.K. ONLY)
SERVICE MANUAL
SHARP  CORPORATION
No. S4225XLT300H/
 • 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-T300H Compact Audio System consisting of XL-T300H
(main unit) and CP-XLT300H (speaker system).
COMPACT AUDIO SYSTEM
MODEL
 XL-T300H
(Except for U.K.)
XL-T300H
– 2 –
Before returning the unit to the customer after completion of a
repair or adjustment it is necessary for the following withstand
voltage test to be applied to ensure the unit is safe for the
customer to use.
Setting of Withstanding Voltage Tester and set.
Set name
set value
Withstanding Voltage Tester
Test voltage
4,240 VPEAK
3,000 VRMS
Set time
6 secs
Set current(Cutoff current)
4 mA
Unit
Judgment
OK: The “GOOD” lamp lights.
NG: The “NG” lamp lights and the buzzor sounds.
This product is classified as a CLASS 1 LASER PRODUCT.
Precaution to be taken when replacing and servicing the
Laser Pickup.
The AEL (Accessible Emission Level) of Laser Power Output is
less than Class 1 but the laser component is capable of emitting
radiation exceeding the limit for Class1. Therefore it is important
that the following precautions must be observed during servicing
to protect your eyes against exposure to the Laser beam.
(1) When the cabinet has been removed, the power is turned
on without a compact disc, and the Pickup is on a position
outer than the lead-in position, the Laser will light for several
seconds to detect a disc. Do not look into the Pickup Lens.
(2) The Laser Power Output of the Pickup inside the unit and
replacement service parts have already been adjusted prior
to shipping.
(3) No adjustment to the Laser Power should be attempted
when replacing or servicing the Pickup.
(4) Under no circumstances look directly into the Pickup Lens
at any time.
(5) CAUTION - Use of controls or adjustments, or performance
of procedures other than those specified herein may result
in hazardous radiation exposure.
SAFETY PRECAUTION FOR SERVICE MANUAL
IMPORTANT SERVICE NOTES (FOR U.K. ONLY)
PROBE
AC
OUT
UNIT
SHORT-CIRCUT
AC POWER
SUPPLY CORD
WITHSTANDING
VOLTAGE TESTER
Screw
Laser Diode Properties
Material: GaAIAs
Wavelength: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW
VAROITUS! LAITTEEN KÄYTTÄMINEN MUULLA KUIN TÄSSÄ
KÄYTTÖOHJEESSA MAINITULLA TAVALLA SAATTAA
A L T I S T A A   K Ä Y T T Ä J Ä N   T U R V A L L I S U U S L U O K A N   1
YLITTÄVÄLLE NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE.
VARNING - OM APPARATEN ANVÄNDS PÅ ANNAT SÄTT ÄN
I   D E N N A   B R U K S A N V I S N I N G   S P E C I F I C E R A S .   K A N
A N V Ä N D A R E N   U T S Ä T T A S   F Ö R   O S Y N L I G   L A S E R -
S T R Å L N I N G ,   S O M   Ö V E R S K R I D E R   G R Ä N S E N   F Ö R
L A S E R K L A S S   1 .
ADVERSEL-SYNLIG OG USYNLIG LASERSTRÅLING VED ÅBNING. 
SE IKKE IND I STRÅLEN-HELLER IKKE MED OPTISKE INSTRUMENTER.
VARO! AVATTAESSA OLET ALTTIINA NÄKYVÄLLE JA NÄKYMÄTTÖMÄLLE 
LASERSÄTEILYLLE ÄLÄ TUIJOTA SÄTEESEEN ÄLÄKÄ KATSO SITÄ
OPTISEN LAITTE EN LÄPI.
VARNING-SYNLIG OCH OSYNLIG LASERSTRÅLNING NÄR DENNA
DEL ÄR ÖPPNAD. STIRRA EJ IN I STRÅLEN OCH BETRAKTA EJ
STRÅLEN GENOM OPTISKT INSTRUMENT.
– 3 –
XL-T300H
SPECIFICATIONS
Specifications for this model are subject to change without
prior notice.
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
General
 
Amplifier
Power source
AC 230 V, 50 Hz
Power consump-
tion
Power on: 46 W
Power stand-by: 0.6 W
Dimensions
Width: 290 mm (11-7/16") 
Height: 130 mm (5-1/8") 
Depth: 260 mm (10-1/4")
Weight
3.7 kg (8.2 lbs.)
Output power
PMPO: 120 W (total)
MPO: 60 W (30 W + 30 W) (DIN 45 324)
RMS: 40 W (20 W + 20 W) (DIN 45 324)
Output terminals
Speakers: 6 ohms
Headphones: 16 - 50 ohms (recommended: 
32 ohms)
CD digital output (optical)
Input terminals
Video/Auxiliary (audio signal): 500 mV/47 
kohms
Amplifier
Output power
RMS: 40 W (20 W + 20 W) (10 % T.H.D.)
Output terminals
Speakers: 6 ohms
Headphones: 16 - 50 ohms (recommended: 
32 ohms)
CD digital output (optical)
Input terminals
Video/Auxiliary (audio signal): 500 mV/47 
kohms
CD player
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)
Tuner
Cassette deck
Frequency range
FM: 87.5 - 108 MHz
AM: 522 - 1,620 kHz
Frequency re-
sponse
50-14,000 Hz (Normal tape)
Signal/noise ratio
50 dB (recording/playback)
Wow and flutter
0.3 % (DIN 45 511)
Speaker
Type
2-way type speaker system
5 cm (2") Tweeter
10 cm (4") Woofer
Maximum input 
power
40 W
Rated input power
20 W
Impedance
6 ohms
Dimensions
Width: 146 mm (5-3/4") 
Height: 267 mm (10-9/16") 
Depth: 203 mm (8")
Weight
2.0 kg (4.4 lbs.)/each
Cassette deck
Frequency re-
sponse
50-14,000 Hz (Normal tape)
Signal/noise ratio
50 dB (recording/playback)
Wow and flutter
0.25 % (WRMS)
Except for U.K.
For U.K.
Except for U.K.
For U.K.
XL-T300H
– 4 –
NAMES OF PARTS
Front panel
1. CD/Cassette Compartment 
2. Function Selector Button 
3. Bass/Treble Selector Button 
4. Memory/Set Button
5. Tape Record Pause Button
6. Volume Up and Down Buttons
7. CD or Tape Open/Close Button
8. CD Track Down or Fast Reverse, Tape Rewind,
Tuner Preset Down Button
9. CD Track Up or Fast Forward, Tape Fast Forward, 
Tuner Preset Up Button
10. CD or Tape Stop, Tuning Down Button
11. CD Play or Pause, Tape Play,
Tuning Up Button
12. On/Stand-by Button
Display
1. Timer Play Indicator
2. Tape Record Indicator
3. Sleep Indicator
4. CD Random Play Indicator
5. Memory Indicator
6. RDS Indicator
7. Traffic Programme Indicator
8. Traffic Announcement Indicator
9. FM Stereo Mode Indicator
10. CD Play Indicator
11. CD Repeat Play Indicator
12. FM Stereo Receiving Indicator
13. Surround Indicator
1
3
4
5
6 7 8 9
11
13
10
12
2
1
2
3
4
5
6
7
8
9
10
11
12
Rear panel
1. Cooling Fan
2. Speaker Terminals
3. Headphone Socket
4. AM Aerial Terminal
5. Aerial Earth Terminal 
6. FM 75 Ohms Aerial Socket
7. CD Digital Output Socket
8. Video/Auxiliary (Audio Signal) Input Sockets
9. AC Power Input Socket
Speaker system
1. Tweeter
2. Woofer
3. Bass Reflex Duct
4. Speaker Terminals
Speaker grilles are removable:
Placing the speaker system:
There is no distinction between the right and the left speakers.
4
3
2
5
6
7
8
9
1
4
1
2
3
Make sure nothing comes into contact with the 
speaker diaphragms when you remove the 
speaker grilles.
 
Left speaker
 
Right speaker
 
Page of 60

Download Sharp XL-T300 (serv.man20) Service Manual (Repair Manual)

Here you can read online and download Sharp XL-T300 (serv.man20) Service Manual in PDF. XL-T300 (serv.man20) service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sharp XL-T300 (serv.man20) System. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.