Sharp SD-AT1000 (serv.man17) Service Manual ▷ View online
SD-AT1000
No. S4336SDAT1000
CONTENTS
Page
IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY) ....................................................................................................... 2
SPECIFICATIONS ............................................................................................................................................................. 3
NAMES OF PARTS ........................................................................................................................................................... 4
DISASSEMBLY .................................................................................................................................................................. 6
ADJUSTMENT ................................................................................................................................................................... 9
DESCRIPTION OF CIRCUIT FOR 1-BIT UNIT ................................................................................................................. 9
TO CHECK AND CANCEL PROTECT CIRCUIT DETECTION LINE .............................................................................. 10
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 11
TYPES OF TRANSISTOR AND LED ............................................................................................................................... 11
BLOCK DIAGRAM ........................................................................................................................................................... 12
WIRING SIDE OF P.W.BOARD / SCHEMATIC DIAGRAM ............................................................................................. 22
VOLTAGE ........................................................................................................................................................................ 41
WAVEFORMS OF 1-BIT CIRCUIT .................................................................................................................................. 42
FUNCTION TABLE OF IC ................................................................................................................................................ 43
REPLACEMENT PARTS LIST/EXPLODED VIEW
PACKING OF THE SET (FOR U.S.A. ONLY)
SPECIFICATIONS ............................................................................................................................................................. 3
NAMES OF PARTS ........................................................................................................................................................... 4
DISASSEMBLY .................................................................................................................................................................. 6
ADJUSTMENT ................................................................................................................................................................... 9
DESCRIPTION OF CIRCUIT FOR 1-BIT UNIT ................................................................................................................. 9
TO CHECK AND CANCEL PROTECT CIRCUIT DETECTION LINE .............................................................................. 10
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 11
TYPES OF TRANSISTOR AND LED ............................................................................................................................... 11
BLOCK DIAGRAM ........................................................................................................................................................... 12
WIRING SIDE OF P.W.BOARD / SCHEMATIC DIAGRAM ............................................................................................. 22
VOLTAGE ........................................................................................................................................................................ 41
WAVEFORMS OF 1-BIT CIRCUIT .................................................................................................................................. 42
FUNCTION TABLE OF IC ................................................................................................................................................ 43
REPLACEMENT PARTS LIST/EXPLODED VIEW
PACKING OF THE SET (FOR U.S.A. ONLY)
SERVICE MANUAL
SHARP CORPORATION
• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
used.
1-BIT DIGITAL HOME THEATER
MODEL
SD-AT1000
SD-AT1000 1-Bit Digital Home Theater consisting of
SD-AT1000 (main unit), CP-AT1000F (front speakers),
CP-AT1000C (center speaker), CP-AT1000R (surround
speakers) and CP-AT1000SW (subwoofer).
SD-AT1000 (main unit), CP-AT1000F (front speakers),
CP-AT1000C (center speaker), CP-AT1000R (surround
speakers) and CP-AT1000SW (subwoofer).
SD-AT1000
– 2 –
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
(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 or that hardware is not lodged between the chassis
and other metal parts in the audio product.
and other metal parts in the audio product.
2. Inspect all protective devices such as insulating materials,
cabinet, terminal board, adjustment and compartment covers
or shields, mechanical insulators etc.
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.
* Using two clip leads, connect a 1.5 kohm, 10 watt resistor
* Using two clip leads, connect a 1.5 kohm, 10 watt resistor
paralleled by a 0.15
µ
F capacitor in series with all exposed
metal cabinet parts and a known earth ground, such as
conduit or electrical ground connected to earth ground.
conduit or electrical ground connected to earth ground.
* Use a VTVM or VOM with 1000 ohm per volt, or higher,
sensitivity to measure the AC voltage drop across the
resistor (See diagram).
resistor (See diagram).
* Connect the resistor connection to all exposed metal parts
having a return path to the chassis (antenna, metal cabinet,
screw heads, knobs and control shafts, escutcheon, etc.)
and measure the AC voltage drop across the resistor.
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.
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
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
KNOWN EARTH
GROUND
TEST PROBE
0.15
µ
F
1.5 kohms
10 W
VTVM
AC SCALE
Connecting speaker wires
Connect the speaker wires to the speakers first, then to the unit.
This prevents short circuit between and terminals.
This prevents short circuit between and terminals.
Caution:
The supplied speakers are exclusively for SD-AT1000. Do not connect them
to other equipment, and do not connect other speakers to SD-AT1000. It may
cause malfunction.
Do not mistake the and , and right and left terminals of the speaker cords. (The
right speaker is placed on the right when you face the unit.)
Do not let the bare speaker wires touch each other.
Do not stand or sit on the speakers. You may be injured.
Insert the speaker plug fully with the rising side facing up.
Hold the speaker plug when removing it from the main unit.
Pulling the cord may cause malfunction to the unit.
to other equipment, and do not connect other speakers to SD-AT1000. It may
cause malfunction.
Do not mistake the and , and right and left terminals of the speaker cords. (The
right speaker is placed on the right when you face the unit.)
Do not let the bare speaker wires touch each other.
Do not stand or sit on the speakers. You may be injured.
Insert the speaker plug fully with the rising side facing up.
Hold the speaker plug when removing it from the main unit.
Pulling the cord may cause malfunction to the unit.
Make sure to leave the AC power cord disconnected
when connecting the speakers.
when connecting the speakers.
Incorrect
1. Connect the wires to the speakers.
2. Connect the other end to the main unit.
Speaker terminals
Speaker Plug
Plug in with the rising
side facing up.
side facing up.
Label
Label
Tube
Red
Black
– 3 –
SD-AT1000
SPECIFICATIONS
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
TO THE OPERATION MANUAL.
SD-AT1000 (For U.S.A.)
SD-AT1000 (For Canada)
Main unit
Power source
AC 120 V, 60 Hz
Power consumption
100 W
Amplification system
2.8224 MHz (64fs) 1-bit switching (remarks: fs = 44.1 kHz)
Power output (FTC)
100 watts minimum RMS per channel into 4 ohms from
200 Hz to 20 kHz, 10 % total harmonic distortion
200 Hz to 20 kHz, 10 % total harmonic distortion
Rated power output
Front: 100 W + 100 W (4 ohms at 1 kHz)
Center: 100 W (4 ohms at 1 kHz)
Surround: 100 W + 100 W (4 ohms at 1 kHz)
Subwoofer: 100 W (4 ohms at 100 Hz)
A/D noise shaping
7th-order (delta - sigma) modulation
Frequency range
FM: 87.5 - 108 MHz
AM: 530 - 1,720 kHz
Audio input terminals
Coaxial digital input (DIGITAL 1): RCA type 1
Optical digital input (DIGITAL 2): Square type 1
Analog input (LINE 1): RCA type 1 pair (L/R)
Analog input (LINE 2): RCA type 1 pair (L/R)
Analog input (LINE 3): RCA type 1 pair (L/R)
Audio output terminal
Front speakers, Center speaker, Surround speakers and
Subwoofer: 4 ohms
Subwoofer: 4 ohms
Headphones: 16 - 50 ohms (recommended: 32 ohms)
Subwoofer Pre Out: 10 kohms
Analog output (LINE 1): RCA type 1 pair (L/R)
Dimensions
Width: 16-7/8" (430 mm)
Height: 2-9/16" (67 mm)
Depth: 12-3/4" (324 mm)
Height: 2-9/16" (67 mm)
Depth: 12-3/4" (324 mm)
Weight
8.8 lbs. (4 kg)
Type
Full range speaker system (magnetic shield)
3-1/8" (8 cm) speaker 2
Impedance
4 ohms
Dimensions
Width: 4-1/8" (105 mm)
Height: 9-7/8" (251 mm)
Depth: 4-7/8" (125 mm)
Height: 9-7/8" (251 mm)
Depth: 4-7/8" (125 mm)
Weight
3.3 lbs. (1.5 kg)/each
Type
Full range speaker system (magnetic shield)
3-1/8" (8 cm) speaker 2
Impedance
4 ohms
Dimensions
Width: 9-7/8" (251 mm)
Height: 4-1/8" (105 mm)
Depth: 4-7/8" (125 mm)
Height: 4-1/8" (105 mm)
Depth: 4-7/8" (125 mm)
Weight
3.3 lbs. (1.5 kg)/each
Type
Full range speaker system
3-1/8" (8 cm) speaker
Impedance
4 ohms
Dimensions
Width: 4-1/8" (105 mm)
Height: 9-7/8" (251 mm)
Depth: 4-7/8" (125 mm)
Height: 9-7/8" (251 mm)
Depth: 4-7/8" (125 mm)
Weight
2.0 lbs. (0.9 kg)/each
Type
6-1/4" (16 cm) woofer (magnetic shield)
Impedance
4 ohms
Dimensions
Width: 9-1/2" (240 mm)
Height: 16-1/16" (408 mm)
Depth: 12" (306 mm)
Height: 16-1/16" (408 mm)
Depth: 12" (306 mm)
Weight
13.9 lbs. (6.3 kg)
Main unit
Power source
AC 120 V, 60 Hz
Power consumption
100 W
Amplification system
2.8224 MHz (64fs) 1-bit switching (remarks: fs = 44.1 kHz)
Output power
Front speakers:
RMS: 200 W (100 W + 100 W) (10 % T.H.D., 1 kHz)
Centre speaker:
RMS: 100 W (10 % T.H.D., 1 kHz)
Surround speakers:
RMS: 200 W (100 W + 100 W) (10 % T.H.D., 1 kHz)
Subwoofer:
RMS: 100 W (10 % T.H.D., 100 Hz)
A/D noise shaping
7th-order (delta - sigma) modulation
Frequency range
FM: 87.5 - 108 MHz
AM: 530 - 1,720 kHz
Audio input terminals
Coaxial digital input (DIGITAL 1): RCA type 1
Optical digital input (DIGITAL 2): Square type 1
Analogue input (LINE 1): RCA type 1 pair (L/R)
Analogue input (LINE 2): RCA type 1 pair (L/R)
Analogue input (LINE 3): RCA type 1 pair (L/R)
Audio output
terminals
terminals
Front speakers, Centre speaker, Surround speakers and
Subwoofer: 4 ohms
Subwoofer: 4 ohms
Headphones: 16 - 50 ohms (recommended: 32 ohms)
Subwoofer Pre Out: 10 k ohms
Analogue output (LINE 1): RCA type 1 pair (L/R)
Dimensions
Width: 430 mm (16-7/8")
Height: 67 mm (2-9/16")
Depth: 324 mm (12-3/4")
Height: 67 mm (2-9/16")
Depth: 324 mm (12-3/4")
Weight
4 kg (8.8 lbs.)
Type
Full range speaker system (magnetic shield)
8 cm (3-1/8") speaker 2
Impedance
4 ohms
Dimensions
Width: 105 mm (4-1/8")
Height: 251 mm (9-7/8")
Depth: 125 mm (4-7/8")
Height: 251 mm (9-7/8")
Depth: 125 mm (4-7/8")
Weight
1.5 kg (3.3 lbs.)/each
Type
Full range speaker system (magnetic shield)
8 cm (3-1/8") speaker 2
Impedance
4 ohms
Dimensions
Width: 251 mm (9-7/8")
Height: 105 mm (4-1/8")
Depth: 125 mm (4-7/8")
Height: 105 mm (4-1/8")
Depth: 125 mm (4-7/8")
Weight
1.5 kg (3.3 lbs.)/each
Type
Full range speaker system
8 cm (3-1/8") Speaker
Impedance
4 ohms
Dimensions
Width: 105 mm (4-1/8")
Height: 251 mm (9-7/8")
Depth: 125 mm (4-7/8")
Height: 251 mm (9-7/8")
Depth: 125 mm (4-7/8")
Weight
0.9 kg (2.0 lbs.)/each
Type
16 cm (6-1/4") woofer (magnetic shield)
Impedance
4 ohms
Dimensions
Width: 240 mm (9-1/2")
Height: 408 mm (16-1/16")
Depth: 306 mm (12")
Height: 408 mm (16-1/16")
Depth: 306 mm (12")
Weight
6.3 kg (13.9 lbs.)
Specifications for this model are subject to change without
prior notice.
prior notice.
CP-AT1000F (For U.S.A.)
CP-AT1000F (For Canada)
CP-AT1000C (For U.S.A.)
CP-AT1000R (For U.S.A.)
CP-AT1000SW (For U.S.A.)
CP-AT1000C (For Canada)
CP-AT1000R (For Canada)
CP-AT1000SW (For Canada)
SD-AT1000
– 4 –
NAMES OF PARTS
SD-AT1000
Main unit (front panel)
1. Sleep Indicator
2. FM Stereo Receiving Indicator
3. Timer Play Indicator
4. FM Stereo Mode Indicator
5. Audio Signal Indicators/Speaker Indicators
2. FM Stereo Receiving Indicator
3. Timer Play Indicator
4. FM Stereo Mode Indicator
5. Audio Signal Indicators/Speaker Indicators
6. Power Button
7. Timer Set Indicator
8. Volume Control
9. Tuning Up and Down Buttons
7. Timer Set Indicator
8. Volume Control
9. Tuning Up and Down Buttons
10. Tuner (Band) Button
11. Line Input Select Button
12. Digital Input Select Button
13. Remote Sensor
14. Headphone Jack
15. Sound Mode Indicators
11. Line Input Select Button
12. Digital Input Select Button
13. Remote Sensor
14. Headphone Jack
15. Sound Mode Indicators
(1)
(2)
(5)
(3) (4)
(6) (7)
(9) (10)(11) (12)
(8)
8
6
10 11
13
14
5
2
3
3
4
1
12
7
(1)
(2)
(3)
(4)
(5)
(6)
15
9
(1)
Subwoofer Indicator
(2)
Left Front Speaker Indicator
(3)
Front Left Signal Indicator
(4)
Center Signal Indicator
(5)
Center Speaker Indicator
(6)
Front Right Signal Indicator
(7)
Right Front Speaker Indicator
(8)
Low Frequency Effect Indicator
(9)
Left Surround Speaker Indicator
(10) Surround Left Signal Indicator
(11) Surround Monaural Signal Indicator
(12) Surround Right Signal Indicator
(13) Right Surround Speaker Indicator
(11) Surround Monaural Signal Indicator
(12) Surround Right Signal Indicator
(13) Right Surround Speaker Indicator
(1)
DTS Signal Indicator
(2)
Dolby Digital Signal Indicator
(3)
Dolby Pro Logic Indicator
(4)
Surround Indicator
(5)
Standard Indicator
(6)
Stereo Indicator
Main unit (rear panel)
1. FM 75 Ohms Antenna Jack
2. Antenna Ground Terminal
3. AM Loop Antenna Terminal
4. Coaxial Digital Audio Input Jack
5. Cooling Fan
6. Speaker Terminals
7. AC Power Cord
8. Subwoofer Pre Output Jack
9. Audio Line Output Jacks
2. Antenna Ground Terminal
3. AM Loop Antenna Terminal
4. Coaxial Digital Audio Input Jack
5. Cooling Fan
6. Speaker Terminals
7. AC Power Cord
8. Subwoofer Pre Output Jack
9. Audio Line Output Jacks
10. Audio Line Input Jacks
11. Optical Digital Audio Input Jack
11. Optical Digital Audio Input Jack
2
3
1
4
5
6
7
9
8
10
11
(13)
