DOWNLOAD Sharp SD-EX220 (serv.man2) Service Manual ↓ Size: 3.81 MB | Pages: 64 in PDF or view online for FREE

Model
SD-EX220 (serv.man2)
Pages
64
Size
3.81 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / System
File
sd-ex220-sm2.pdf
Date

Sharp SD-EX220 (serv.man2) Service Manual ▷ View online

SD-EX220H
 
CHAPTER 1. GENERAL DESCRIPTION
[1] Specifications.................................................1-1
[2] Names of parts ..............................................1-2
CHAPTER 2. ADJUSTMENTS
[1] Adjustment.....................................................2-1
[2] To Check and Cancel Protect Circuit Detection 
Line ................................................................2-1
[3] Test mode ......................................................2-2
CHAPTER 3. MECHANISM BLOCKS
[1] Disassembly  .................................................3-1
[2] Removing and reinstalling the main parts .....3-3
CHAPTER 4. DIAGRAMS
[1] Block diagram ................................................4-1
CHAPTER 5. CIRCUIT DESCRIPTION
[1] Notes on schematic diagram .........................5-1
[2] Types of transistor and LED .......................... 5-1
[3] Description of circuit for 1-bit unit (See the wiring 
diagrams on pages 6-16 and 6-17) ............... 5-2
[4] Waveforms of 1-bit circuit.............................. 5-2
[5] Waveforms of CD circuit................................ 5-3
[6] Voltage .......................................................... 5-4
CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS
LAYOUT
[1] Wiring side of P.W.Board/schematic diagram 6-1
CHAPTER 7. OPERATION FLOWCHART
[1] Troubleshooting............................................. 7-1
CHAPTER 8. OTHER
[1] Function table of IC ....................................... 8-1
Parts Guide
SERVICE MANUAL
No. S7367SDEX220H
1-BIT DIGITAL AUDIO SYSTEM
SD-EX220H
MODEL
SHARP CORPORATION
CONTENTS
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.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
SD-EX220H 1-Bit Digital Audio System consisting of 
SD-EX220H (main unit) and CP-EX220H (speaker system).
In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
SD-EX220H
[1] Safety precaution for service manual
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 Require-
ments. 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 sev-
eral 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.
[2] 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 cus-
tomer to use.
Setting of Withstanding Voltage Tester and set.
Laser Diode Properties
Material: GaAIAs
Wavelength: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW
PROBE
AC
OUT
UNIT
SHORT-CIRCUIT
AC POWER
SUPPLY CORD
CONNECT THE PROBE
TO GND OF CHASSIS
SCREW
WITHSTANDING
VOLTAGE TESTER
Set name
set value
Withstanding Voltage Tester
Test voltage
4.7 kV DC
Set time
3 secs
Set current (Cutoff current)
3 mA
Unit
Judgment
OK: The ÒGOODÓ lamp lights.
NG: The ÒNGÓ lamp lights and the buzzer sounds.
SD-EX220H
1 – 1
Audio
SD-EX220H
Service Manual
Market
E
 
CHAPTER 1. 
GENERAL DESCRIPTION
[1] Specifications
General
Amplifier
CD player
Tuner
Power source
AC 230 V, 50 Hz
Power consumption
Power on: 62 W
Power stand-by: 0.9 W
Dimensions
Width: 380 mm (15")
Height: 200 mm (7-7/8")
Depth: 120 mm (4-3/4")
Weight
3.7 kg (8.2 lbs.)
Output terminals
Speakers: 4 ohms
Headphones: 16 - 50 ohms (recommended: 32 ohms)
Optical digital output
Subwoofer pre-out (audio signal): 200 mV/10 k ohms at
70 Hz
Input terminals
Auxiliary input: 500 mV/47 k ohms
Amplification system
64fs 1-bit switching (Remarks: fs = 44.1 kHz)
Rated output power
RMS: 160 W (80 W + 80 W) (DIN 45 500)
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
24-bit/96 k D/A converter
Frequency response
20 - 20,000 Hz
Dynamic range
101 dB (1 kHz)
Frequency range
FM: 87.5 - 108 MHz
AM: 522 - 1,620 kHz
Type
2-way type speaker system
2 cm (13/16") Tweeter
12 cm (4-3/4") Woofer
Maximum input power
160 W
Rated input power
80 W
Impedance
4 ohms
Dimensions
Width: 270 mm (10-11/16")
Height: 200 mm (7-7/8")
Depth: 124 mm (4-15/16")
Weight
2.3 kg (5.1 lbs.)/each
SD-EX220H (Except for U.K.)
CP-EX220H (Except for U.K.)
SD-EX220H (For U.K.)
CP-EX220H (For U.K.)
General
Amplifier
CD player
Tuner
Power source
AC 230 V, 50 Hz
Power consumption
Power on: 62 W
Power stand-by: 0.9 W
Dimensions
Width: 380 mm (15")
Height: 200 mm (7-7/8")
Depth: 120 mm (4-3/4")
Weight
3.7 kg (8.2 lbs.)
Output terminals
Speakers: 4 ohms
Headphones: 16 - 50 ohms (recommended: 32 ohms)
Optical digital output
Subwoofer pre-out (audio signal): 200 mV/10 k ohms at
70 Hz
Input terminals
Auxiliary input: 500 mV/47 k ohms
Amplification system
64fs 1-bit switching (Remarks: fs = 44.1 kHz)
Rated output power
RMS: 160 W (80 W + 80 W) (1 % T.H.D.)
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
24-bit/96 k D/A converter
Frequency response
20 - 20,000 Hz
Dynamic range
101 dB (1 kHz)
Frequency range
FM: 87.5 - 108 MHz
AM: 522 - 1,620 kHz
Type
2-way type speaker system
2 cm (13/16") Tweeter
12 cm (4-3/4") Woofer
Maximum input power
160 W
Rated input power
80 W
Impedance
4 ohms
Dimensions
Width: 270 mm (10-11/16")
Height: 200 mm (7-7/8")
Depth: 124 mm (4-15/16")
Weight
2.3 kg (5.1 lbs.)/each
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
Specifications for this model are subject to change without prior notice.
SD-EX220H
1 – 2
[2] Names of parts
Front panel
1. CD Cover
2. Remote Sensor
3. Timer Set Indicator
4. Headphone Socket
5. CD Stop Button
6. CD Play/Pause Button
7. Tuner (Band) Button
8. Auxiliary Button
9. Volume Up and Down Buttons
10. CD Cover Open/Close Button
11. CD Track Down or Fast Reverse/Tuning Down Button
12. CD Track Up or Fast Forward/Tuning Up Button
13. Bass/Treble Button
14. On/Stand-by Button
Display
1. Surround Indicator
2. RDS Indicator
3. Radio Text Indicator
4. Traffic Announcement Indicator
5. FM Stereo Mode Indicator
6. Timer Play Indicator
7. Sleep Indicator
8. Dynamic PTY Indicator
9. Traffic Programme Indicator
10. FM Stereo Receiving Indicator
11. CD Memory Indicator
12. Random Play Indicator
13. Function Indicators
14. CD Repeat Play Indicator
15. CD Play Indicator
16. CD Pause Indicator
3
4
5
2
11
12
13
5
8
9
7
10
11
13
14
12
3
1
6
7
8
9
10
4
14
15
16
1
2
6
SD-EX220H
Side panel
1. FM 75 Ohms Aerial Socket
2. Aerial Earth Terminal
3. AM Aerial Terminal
4. Auxiliary Input Sockets
5. Optical Digital Output Socket
6. AC Power Lead
7. Speaker Terminals
8. Subwoofer Pre-output Socket
9. Left Side Cover
10. Right Side Cover
1
2
3
4
5
6
7
8
Left side
Right side
9
10
Page of 64
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Sharp SD-EX220 (serv.man2) Service Manual ▷ Download

  • DOWNLOAD Sharp SD-EX220 (serv.man2) Service Manual ↓ Size: 3.81 MB | Pages: 64 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sharp SD-EX220 (serv.man2) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp SD-EX220 (serv.man2) System. Information contained in Sharp SD-EX220 (serv.man2) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.