SD-AT100 (serv.man7) - Sharp Audio Service Manual (repair manual)

sd-at100 (serv.man7) service manual
Model
SD-AT100 (serv.man7)
Pages
127
Size
8.7 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / Home Theatre
File
sd-at100-sm7.pdf
Date

Read Sharp SD-AT100 (serv.man7) Service Manual online

SD-AT100H
No. SY184SDAT100H
 CONTENTS
Page
SAFETY PRECAUTION FOR SERVICE MANUAL ...........................................................................................................  2
IMPORTANT SERVICE NOTES (FOR U.K. ONLY) ..........................................................................................................  2
SPECIFICATIONS (FOR U.K.) ..........................................................................................................................................  3
SPECIFICATIONS (EXCEPT FOR U.K.) ...........................................................................................................................  4
NAMES OF PARTS ...........................................................................................................................................................  5
OPERATION MANUAL ......................................................................................................................................................  8
QUICK GUIDE (FOR U.K. ONLY) ..................................................................................................................................... 12
DISASSEMBLY ................................................................................................................................................................  15
REMOVING AND REINSTALLING THE MAIN PARTS ...................................................................................................  19
WIRING PROCESS DIARGRAM ...................................................................................................................................... 19
ADJUSTMENT .................................................................................................................................................................  20
DVD RECORDER DOWNLOLD PROCEDURES ............................................................................................................. 31
DESCRIPTION OF AND HOW TO AVOID ERROR AND ABNORMALITY INDICATIONS ............................................. 33
DESCRIPTION OF CIRCUIT FOR 1-BIT UNIT ................................................................................................................ 34
TO CHECK AND CANCEL PROTECT CIRCUIT DETECTION LINE ............................................................................... 35
WIRING  DIAGRAM .........................................................................................................................................................  36
BLOCK DIAGRAM ...........................................................................................................................................................  38
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD .............................................................................................. 55
VOLTAGE ........................................................................................................................................................................  95
NOTES ON SCHEMATIC DIAGRAM ..............................................................................................................................  96
TYPES OF TRANSISTOR AND LED ................................................................................................................................ 96
WAVEFORMS OF 1-BIT CIRCUIT ..................................................................................................................................  97
WAVEFORMS OF DVD CIRCUIT ...................................................................................................................................  98
TROUBLESHOOTING .....................................................................................................................................................  99
FUNCTION TABLE OF IC ..............................................................................................................................................  102
FL DISPLAY .................................................................................................................................................................... 112
REPLACEMENT PARTS LIST/EXPLODED VIEW
PACKING METHOD (FOR U.K. ONLY)
• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
SERVICE MANUAL
SHARP CORPORATION
1-BIT DIGITAL HOME CINEMA WITH DVD
MODEL 
SD-AT100H
SD-AT100H
– 2 –
Precaution to be taken when replacing and servicing the
Laser Pickup.
The AEL (Accessible Emission Level) of Laser Power Output
for this model is specified to be lower than Class 1
Requirements. However, 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.
IMPORTANT SERVICE NOTES
(FOR U.K. ONLY)
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 buzzer sounds.
PROBE
AC
OUT
UNIT
SHORT-CIRCUIT
AC POWER
SUPPLY CORD
CONNECT THE PROBE
TO GND OF CHASSIS
SCREW
WITHSTANDING
VOLTAGE TESTER
Laser Diode Properties
Material: AIGaAs/AIGaInP
Wavelength: 785 nm/650 nm
Emission Duration: continuous
Laser Output: max. 0.69 mW
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 
LAITTEEN LÄPI.
VARNING-SYNLIG OCH OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR 
ÖPPNAD. STIRRA EJ IN I STRÅLEN OCH BETRAKTA EJ STRÅLEN GENOM 
OPTISKT INSTRUMENT.
VAROITUS! LAITTEEN KÄYTTÄMINEN MUULLA KUIN TÄSSÄ
KÄYTTÖOHJEESSA MAINITULLA TAVALLA SAATTAA ALTISTAA
KÄYTTÄJÄN TURVALLISUUSLUOKAN 1 YLITTÄVÄLLE NÄKYVÄLLE JA
NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE.
VARNING - OM APPARATEN ANVÄNDS PÅ ANNAT SÄTT ÄN I DENNA
BRUKSANVISNING SPECIFICERAS. KAN ANVÄNDAREN UTSÄTTAS FÖR
SYNLIG OCH OSYNLIG LASERSTRÅLNING, SOM ÖVERSKRIDER GRÄNSEN
FÖR LASERKLASS 1.
SAFETY PRECAUTION FOR
SERVICE MANUAL
– 3 –
SD-AT100H
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
SPECIFICATIONS (FOR U.K. ONLY)
SD-AT100H
Specifications for this model are subject to change without
prior notice.
General
Amplifier
DVD/CD player
Tuner
Power source
AC 230 V, 50 Hz
Power consumption
75 W
Dimensions
Width: 450 mm (17-3/4")
Height: 152 mm (6")
Depth: 119 mm (4-11/16")
Weight
4.8 kg (10.6 lbs.)
Terminals
Front speakers, Centre speaker, Surround speakers and
Subwoofer: 4 ohms
Headphones: 16 - 50 ohms (recommended: 32 ohms)
Monitor output: S-video/video
Subwoofer Pre Out: 10 kohms
Digital output: Optical
Digital input (AV 3): Optical
AV Terminal [AV 1 (TV)]: SCART type
AV Terminal (AV 2): SCART type
S-video input (AV 3): S-terminal
Video input (AV 3): RCA type
Audio input (AV 3): RCA type (L/R)
Amplification system
64fs 1-bit switching (Remarks: fs = 44.1 kHz)
Output power
Front speakers:
RMS: 50 W (25 W + 25 W) (10 % T.H.D., 1 kHz)
Centre speaker:
RMS: 25 W (10 % T.H.D., 1 kHz)
Surround speakers:
RMS: 50 W (25 W + 25 W) (10 % T.H.D., 1 kHz)
Subwoofer:
RMS: 25 W (10 % T.H.D., 100 Hz)
A/D noise shaping
7th-order 
   (delta - sigma) modulation
Type
1-disc vertical 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)
Signal system
NTSC/PAL
Frequency range
FM: 87.5 - 108 MHz
AM: 522 - 1,620 kHz
Type
2-way type speaker system (Magnetic shield)
80 mm (3-1/8") Woofer
40 mm (1-5/8") Tweeter
Maximum input power 50 W
Rated input power
25 W
Impedance
4 ohms
Dimensions
Width: 110 mm (4-3/8")
Height: 195 mm (7-11/16") 
Depth: 134 mm (5-5/16")
Weight
1.0 kg (2.2 lbs.)/each
Front Speaker
Center Speaker
Surround Speaker
Subwoofer
Type
2-way type speaker system (Magnetic shield)
80 mm (3-1/8") Woofer
40 mm (1-5/8") Tweeter
Maximum input power 50 W
Rated input power
25 W
Impedance
4 ohms
Dimensions
Width: 185 mm (7-5/16")
Height: 125 mm (4-15/16")
Depth: 134 mm (5-5/16")
Weight
1.0 kg (2.2 lbs.)
Type
80 mm (3-1/8") full-range speaker
Maximum input power 50 W
Rated input power
25 W
Impedance
4 ohms
Dimensions
Width: 110 mm (4-3/8")
Height: 195 mm (7-11/16")
Depth: 134 mm (5-5/16")
Weight
0.8 kg (1.8 lbs.)/each
Type
160 mm (6-1/2") Woofer
Maximum input power 50 W
Rated input power
25 W
Impedance
4 ohms
Dimensions
Width: 164 mm (6-1/2")
Height: 360 mm (14-3/16")
Depth: 371 mm (14-5/8")
Weight
4.9 kg (10.8 lbs.)
SD-AT100H
– 4 –
SPECIFICATIONS (EXCEPT FOR U.K. )
General
 
Amplifier
DVD/CD player
 
Tuner
Power source
AC 230 V, 50 Hz
Power consumption
75 W
Dimensions
Width: 450 mm (17-3/4")
Height: 152 mm (6")
Depth: 119 mm (4-11/16")
Weight
4.8 kg (10.6 lbs.)
Terminals
Front speakers, Centre speaker, Surround speakers and
Subwoofer: 4 ohms
Headphones: 16 - 50 ohms (recommended: 32 ohms)
Monitor output: S-video/video
Subwoofer Pre Out: 10 kohms
Digital output: Optical
Digital input (AV 3): Optical
AV Terminal [AV 1 (TV)]: SCART type
AV Terminal (AV 2): SCART type
S-video input (AV 3): S-terminal
Video input (AV 3): RCA type
Audio input (AV 3): RCA type (L/R)
Amplification system
64fs 1-bit switching (Remarks: fs = 44.1 kHz)
Output power
Front speakers:
RMS: 50 W (25 W + 25 W) (10 % T.H.D., 1 kHz)
Centre speaker:
RMS: 25 W (10 % T.H.D., 1 kHz)
Surround speakers:
RMS: 50 W (25 W + 25 W) (10 % T.H.D., 1 kHz)
Subwoofer:
RMS: 25 W (10 % T.H.D., 100 Hz)
A/D noise shaping
7th-order 
   (delta - sigma) modulation
Type
1-disc vertical 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)
Signal system
NTSC/PAL
Frequency range
FM: 87.5 - 108 MHz
AM: 522 - 1,620 kHz
Type
2-way type speaker system (Magnetic shield)
80 mm (3-1/8") Woofer
40 mm (1-5/8") Tweeter
Maximum input power 50 W
Rated input power
25 W
Impedance
4 ohms
Dimensions
Width: 110 mm (4-3/8")
Height: 195 mm (7-11/16")
Depth: 134 mm (5-5/16")
Weight
1.0 kg (2.2 lbs.)/each
Fronte Speaker
Center Speaker
Surround Speaker
Subwoofer
Type
2-way type speaker system (Magnetic shield)
80 mm (3-1/8") Woofer
40 mm (1-5/8") Tweeter
Maximum input power 50 W
Rated input power
25 W
Impedance
4 ohms
Dimensions
Width: 185 mm (7-5/16") 
Height: 125 mm (4-15/16")
Depth: 134 mm (5-5/16")
Weight
1.0 kg (2.2 lbs.)
Type
80 mm (3-1/8") full-range speaker
Maximum input power 50 W
Rated input power
25 W
Impedance
4 ohms
Dimensions
Width: 110 mm (4-3/8") 
Height: 195 mm (7-11/16") 
Depth: 134 mm (5-5/16")
Weight
0.8 kg (1.8 lbs.)/each
Type
160 mm (6-1/2") Woofer
Maximum input power 50 W
Rated input power
25 W
Impedance
4 ohms
Dimensions
Width: 164 mm (6-1/2") 
Height: 360 mm (14-3/16") 
Depth: 371 mm (14-5/8")
Weight
4.9 kg (10.8 lbs.)
Specifications for this model are subject to change without
prior notice.
SD-AT100H
Page of 127
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Here you can read online and download Sharp SD-AT100 (serv.man7) Service Manual in PDF. SD-AT100 (serv.man7) service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sharp SD-AT100 (serv.man7) Home Theatre. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.