DOWNLOAD Sharp SD-NX10 (serv.man4) Service Manual ↓ Size: 974.59 KB | Pages: 13 in PDF or view online for FREE

Model
SD-NX10 (serv.man4)
Pages
13
Size
974.59 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio / System / Part 1 - text (Page 1-13)
File
sd-nx10-sm4.pdf
Date

Sharp SD-NX10 (serv.man4) Service Manual ▷ View online

– 1 –
SD-NX10H
 CONTENTS
Page
SAFETY PRECAUTION FOR  SERVICE MANUAL ........................................................................................................... 2
IMPORTANT SERVICE NOTES (FOR U.K. ONLY) ..........................................................................................................  3
SPECIFICATIONS .............................................................................................................................................................  4
NAMES OF PARTS ...........................................................................................................................................................  5
OPERATION MANUAL ......................................................................................................................................................  8
DISASSEMBLY ................................................................................................................................................................  14
REMOVING AND REINSTALLING THE MAIN PARTS ...................................................................................................  18
WIRING PROCESS DIAGRAM .......................................................................................................................................  22
ADJUSTMENT .................................................................................................................................................................  22
ERROR MESSAGE LIST .................................................................................................................................................  32
EEPROM WRITING PROCEDURE .................................................................................................................................  33
DESCRIPTION OF CIRCUIT FOR 1-BIT UNIT ...............................................................................................................  35
TO CHECK AND CANCEL PROTECT CIRCUIT DETECTION LINE ..............................................................................   36
TEST MODE ....................................................................................................................................................................  37
BLOCK DIAGRAM ...........................................................................................................................................................  44
WIRING SIDE OF P.W.BOARD .......................................................................................................................................  51
SCHEMATIC DIAGRAM ..................................................................................................................................................  62
VOLTAGE ........................................................................................................................................................................  76
NOTES ON SCHEMATIC DIAGRAM ..............................................................................................................................  77
TYPES OF TRANSISTOR AND LED ...............................................................................................................................  77
WAVEFORMS OF 1-BIT CIRCUIT ..................................................................................................................................  78
WAVEFORMS OF MD CIRCUIT .....................................................................................................................................  79
TROUBLESHOOTING .....................................................................................................................................................  81
FUNCTION TABLE OF IC ................................................................................................................................................  86
FL DISPLAY ...................................................................................................................................................................  100
PARTS GUIDE/EXPLODED VIEW
PACKING METHOD (FOR U.K. ONLY)
SERVICE MANUAL
SHARP  CORPORATION
No. S2109SDNX10H/
 • 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.
SD-NX10H
MODEL
1-BIT DIGITAL AUDIO SYSTEM
The power of this unit is supplied from the amplifying unit via the
system connection cable. It does not operate by itself.
SD-NX10H
– 2 –
SAFETY PRECAUTION FOR
SERVICE MANUAL
The AEL (ACCESSIBLE EMISSION LEVEL) of the laser
power output is less than class 1 but the laser component is
capable of emitting radiation exceeding the limit for class 1.
Therefore it is important that the following precautions are
observer during servicing to protect your eyes against exposure
to the laser beam.
(1) When the unit case cover is removed and LOADING SW
(SW1932) is turned on and then PLAY SW (SW1934
mechanism PWB) is turned on in a few second.
The laser will light for several second to detect a disk.
(2) The laser power output of the pickup unit and replacement
service parts are all factory preset before shipment.
    Do not attempt to readjust the laser pickup unit during
replacement or servicing.
(3) Under no circumstances stare into the pickup lens at any
time.
(4) If laser optical unit becomes faulty, replace the complete
laser optical unit.
(5) CAUTION-USE of controls or adjustments, or performance
of procedures other than those specified herein may result
in hazardous radiation exposure.
VARO !
Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättömälle lasersäteilylle. Älä katso säteeseen.
VARNING!
Osynlig laserstralning när denna del är öppnad och spärren är urkopplad. Betrakta ej strälen.
(For U.K.)
LASER KLASSE 1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT
(Except for U.K.)
VAROITUS! LAITTEEN KÄYTTÄMINEN MUULLA KUIN TÄSSÄ 
K Ä Y T T Ö O H J E E S S A   M A I   N I T U L L A   T A V A L L A   S A A T T A A   A L T I S T A A  
KÄYTTÄJÄN TURVALLISUUSLUOKAN 1 YLITTÄVÄLLE NÄKYMÄTTÖMÄLLE 
LASERSÄTEILYLLE.
VARNING - OM APPARATEN ANVÄNDS PÅ ANNAT SÄTT ÄN I DENNA 
BRUKSANVISNING SPECIFICERAS. KAN ANVÄNDAREN UTSÄTTAS FÖR 
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  
LASERKLASS 1.
CAUTION - INVISIBLE  LASER  RADIATION  WHEN  OPEN  AND  INTERLOCKS  DEFEATED 
AVOID  EXPOSURE  TO  BEAM .
VARNING - OSYNLIG  LASERSTRÅLNING  NÄR  DENNA  DEL  ÄR  ÖPPNAD  OCH  SPÄRRAR
ÄR  URKOPPLADE.  STRÅLEN  ÄR  FARLIG.
ADVARSEL - USYNLIG  LASERSTRÅLING  NÅR  DEKSEL  ÅPNES  OG  SIKKERHEDSLÅS
BRYTES.  UNNGÅ  EKSPONERING  FOR  STRÅLEN.
VARO!  AVATTAESSA  JA  SUOJALUKITUS  OHITETTAESSA  OLET  ALTTIINA
NÄKYMÄTÖN  LASERSÄTEILYLLE.  ÄLÄ  KATSO  SÄTEESEN.
VARNING - OSYNLIG  LASERSTRÅLING  NÄR  DENNA  DEL  ÄR  ÖPPNAD  OCH  SPÄRREN
ÄR  URKOPPLAD.  BETRAKTA  EJ  STRÅLEN.
ADVARSEL - USYNLIG  LASERSTRÅLING  VED  ÅBNING  NÅR  SIKKERHEDSAFBRYDERE
ER  UDE  AF  FUNKTION.  UNDGÅ  UDSETTELSE  FOR  STRÅLING.
Laser Diode Properties
Material: GaAIAs
Wavelength: 785 nm
Pulse time:
Read mode: 0.8 mW Continuous
Write mode: max 10 mW 0.5S
min cycle 1.5S
Repetition
– 3 –
SD-NX10H
Precaution to be taken when replacing and servicing the laser pickup.
The following precautions must be observed during servicing to protect your eyesvagainst exposure to the laser.
Warning of possible eye damage when repairing:
If the AC power plug is connected when the inner cover of the unit is removed, the laser will light up during focus  access (about
1 second) (Fig. 3-1).
During this operation, the laser will leak from the opening between the magnetic head and cartridge holder (Fig. 3-2).
In order to protect your eyes, you must not look at the laser during repair.
Before repairing, be sure to disconnect the AC power plug.
Figure 3-1
Magnetic Head
Optical Pickup
,,
Magnetic Head
Optical Pickup
Spindle Motor
Laser Beam
Cartridge Holder
Mechanism
Chassis
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.
SHORT-CIRCUIT
AC POWER 
SUPPLY CORD
CONNECT THE PROBE
TO GND 
OF CHASSIS
SCREW
 PROBE
AC
UNIT
WITHSTANDING
VOLTAGE TESTER
+
-
OUT
Figure 3-2
SD-NX10H
– 4 –
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
SPECIFICATIONS
SD-NX10H
Specifications for this model are subject to change without
prior notice.
CP-NX10H
Amplifier
 
CD player
MiniDisc
Tuner
Amplification system
64fs 1-bit switching
(Remarks:fs = 44.1 kHz)
Rated output power
RMS: 50 W (25 W + 25 W) (DIN 45 324)
A/D noise shaping
7th-order       (delta - sigma) modulation
Type
1-disc slot-in 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)
Type
MiniDisc Recorder
Signal readout
Non-contact, 3-beam semiconductor laser pickup
Rotation speed
400 - 900 rpm CLV, Approx.
Error correction
ACIRC (Advanced Cross Interleave Reed-Solomon Code)
Quantization
20-bit linear (A/D converter)
Coding
ATRAC (Adaptive TRansform Acoustic Coding), 
ATRAC 3
Sampling frequency
44.1 kHz
Recording method
Magnetic modulation overwrite method
Frequency response
20 - 20,000 Hz
D/A converter
1-bit D/A converter
Wow and flutter
Unmeasurable (less than 0.001% W. peak)
Signal/noise ratio
95 dB (1 kHz)
Dynamic range
90 dB (1 kHz)
Audio channel
Stereo: 2 channels (SP, LP2, LP4)
Monaural: 1 channel (MONO)
Frequency range
FM: 87.5 - 108 MHz
AM: 522 - 1,620 kHz
Type
2-way type speaker system
 
3 cm (1-3/16") Tweeter
10 cm (4") Woofer
Maximum input power
50 W
Rated input power
25 W
Impedance
6 ohms
Dimensions
Width: 187 mm (7-3/8") 
Height: 423 mm (16-11/16") 
Depth: 200 mm (7-7/8")
Weight
3.7 kg (8.2 lbs.)/each
General
Power source
AC 230 V, 50 Hz
Power consumption
Power on: 54 W
Power stand-by: 0.6 W (*)
Dimensions
MD/CD/tuner unit
Width: 318 mm (12-9/16") 
Height: 210 mm (8-5/16") 
Depth: 93 mm (3-11/16")
Amplifier unit
Width: 160 mm (6-5/16") 
Height: 210 mm (8-5/16") 
Depth: 136 mm (5-3/8")
Weight
MD/CD/tuner unit
3.7 kg (8.2 lbs.)
Amplifier unit
3.5 kg (7.7 lbs.)
Input/output terminals
MD/CD/tuner unit
Auxiliary  input: 500 mV/47 kohms
Digital input (optical)
System output (RCA)
Line output: 500 mV/47 kohms
Headphones: 16 - 50 ohms (recommended: 32 ohms)
System control (SD-NX10H amplifier unit only)
Amplifier unit
System input (RCA)
Speakers; 6 ohms
System control (SD-NX10H MD/CD/tuner unit only)
( * )
This power consumption value is obtained when the demonstration mode is can-
celled in the power stand-by mode. Cancel the demonstration mode.
Page of 13
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Sharp SD-NX10 (serv.man4) Service Manual ▷ Download

  • DOWNLOAD Sharp SD-NX10 (serv.man4) Service Manual ↓ Size: 974.59 KB | Pages: 13 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sharp SD-NX10 (serv.man4) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp SD-NX10 (serv.man4) System. Information contained in Sharp SD-NX10 (serv.man4) 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.