Aiwa NSX-BL54 LH User manual

SERVICE MANUAL
DATA
NSX–BL54
SYSTEM CD
CASSEIVER REMOTE CONTROLLER
CX–NBL54
COMPACT DISC
STEREO SYSTEM
BASIC TAPE MECHANISM : 2ZM-3MK2 YPR4N(LH)
BASIC TAPE MECHANISM : ZZM-3 PR1NF(U)
BASIC CD MECHANISM : AZG-1 ZD8RDC(LH)
BASIC CD MECHANISM : AZG-1 YKZD8RDF(U)
NSX-BL54
NSX-AJ54
LH
U
S/M Code No. 09-002-429-5N3
• If requiring information about the CD mechanism, see Service Manual of
AZG-1 ZD8RDC (S/M Code No. 09-001-335-3NA)/
AZG-1 YKZD8RDF (S/M Code No. 09-001-335-3N6).
SPEAKER
SX–WNBL53
NSX–AJ54 CX–NAJ54 SX–WNAJ53
RC–ZAS01
RC–ZAS02
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2
Main unit CX-NBL54/CX-NAJ54
FM tuner section
Tuning range 87.5 MHz to 108 MHz
Usable sensitivity (IHF) 13.2 dBf
Antenna terminal 75 ohms (unbalanced)
AM tuner section
Tuning range 530 kHz to 1710 kHz (10 kHz step)
531 kHz to 1602 kHz (9 kHz step)
Usable sensitivity 350 µV/m
Antenna Loop antenna
Amplifier section
Mid-high frequency amplifier
Power output Rated: 20 W + 20 W (8 ohms,
T.H.D. 1 %, 1 kHz) <LH>
Reference : 25 W + 25 W (8 ohms,
T.H.D. 10 %, 1 kHz) <LH>
20 W + 20 W (200 Hz - 20kHz, THD
less than 1%, 8 ohms) <U>
Total harmonic distortion 0.1 % (10 W, 1 kHz, 8 ohms, DIN
AUDIO)
Low frequency amplifier
Power output Rated: 60 W + 60 W (6 ohms,
T.H.D. 1 %, 130 Hz) <LH>
Reference : 75 W + 75 W (6 ohms,
T.H.D. 10 %, 130 Hz) <LH>
60 W + 60 W (50 Hz - 200 Hz, THD
less than 1%, 6 ohms) <U>
Total harmonic distortion 0.1 % (30W, 130 Hz, 6 ohms, DIN
AUDIO)
Inputs VIDEO/AUX: 500 mV
MIC 1.0 mV (10 k ohms) <LH>
Outputs SPEAKERS HIGH FREQ:
accept speakers of 8 ohms or more
SPEAKERS LOW FREQ:
accept speakers of 6 ohms or more
SURROUND SPEAKERS:
accept speakers of 8 ohms to 16
ohms
PHONES (stereo jack): accepts
headphones of 32 ohms or more
Cassette deck section
Track format 4 tracks, 2 channels stereo
Frequency response 50 Hz – 15000 Hz
Recording system AC bias
Heads Deck 1: Playback head x 1
Deck 2: Recording/playback head
x 1, erase head x 1
SPECIFICATIONS
Compact disc player section
Laser Semiconductor laser (λ = 780 nm)
D-A converter 1 bit dual
Signal-to-noise ratio 85 dB (1 kHz, 0 dB)
Harmonic distortion 0.05 % (1 kHz, 0 dB)
Wow and flutter Unmeasurable
General
Power requirements 120 V/220 – 230 V/240 V AC,
switchable 50/60 Hz <LH>
120 V AC, 60 Hz <U>
Power consumption 130 W <LH>, 110 W <U>
Power consumption in standby mode
If the power-economizing mode is
ECO OFF: 20 W
If the power-economizing mode is
ECO ON or ECO AUTO: 0.9 W
Dimensions of main unit 260 x 326 x 346 mm
(W xH xD) (10 1/4x 127/8x 135/8in.)
Weight of main unit 9.0 kg <LH>
8.0 kg (17 lbs 10 oz.) <U>
Speaker system SX-WNBL53/SX-WNAJ53
Speaker system 3 way, Built-in subwoofer (magnetic
shielded type)
Speaker units Subwoofer: 160 mm (63/8in.)
cone type
Full range: 100 mm (4 in.)cone type
Super tweeter: 20 mm (13/16 in.)
ceramic type
Impedance 6 ohms/8 ohms
Sensitvity 87 dB/W/m
Dimensions (W xH xD) 230 x 324 x 282 mm
(91/8x 127/8x 111/8in.)
Weight 4.8 kg (10 lbs 9 oz)
REF. NO PART NO. KANRI DESCRIPTION
NO.
ACCESSORIES LIST
1 8A-NFJ-902-010 IB,LH(ESP)B<LH>
1 8A-NFJ-913-010 IB,U(ESF)M<U>
2 8Z-NF8-702-010 RC UNIT,RC-ZAS01<LH>
2 8Z-NF9-702-010 RC UNIT,ZAS02<U>
3 87-006-268-010 ANT,LOOP AM<U>
3 87-A90-030-010 ANT,LOOP AM-NC C<LH>
4 87-043-115-010 FEEDER-ANT,FM
!5 87-A91-017-010 PLUG,CONVERSION JT-0476<LH>
• Design and specifications are subject to change without notice.
• The word “BBE” and the “BBE symbol” are trademarks of BBE
Sound, Inc.
• Under license from BBE Sound, Inc.
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3
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING
VAROITUS!
Laiteen Käyttäminen muulla kuin tässä käyttöohjeessa mainit-
ulla tavalla saattaa altistaa käyt-täjän turvallisuusluokan 1 ylit-
tävälle näkymättömälle lasersäteilylle.
VARNING!
Om apparaten används på annat sätt än vad som specificeras i
denna bruksanvising, kan användaren utsättas för osynling
laserstrålning, som överskrider gränsen för laserklass 1.
Caution: Invisible laser radiation when
open and interlocks defeated avoid expo-
sure to beam.
Advarsel:Usynling laserståling ved åbning,
når sikkerhedsafbrydere er ude af funktion.
Undgå udsættelse for stråling.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
ATTENTION
L'utilisation de commandes, réglages ou procédures autres que
ceux spécifiés peut entraîner une dangereuse exposition aux
radiations.
ADVARSEL!
Usynlig laserståling ved åbning, når sikkerhedsafbrydereer ude
af funktion. Undgå udsættelse for stråling.
This Compact Disc player is classified as a CLASS 1 LASER
product.
The CLASS 1 LASER PRODUCT label is located on the rear
exterior.
This set employs laser. Therefore, be sure to follow carefully the
instructions below when servicing.
WARNING!
WHEN SERVICING, DO NOT APPROACH THE LASER EXIT
WITH THE EYE TOO CLOSELY. IN CASE IT IS NECESSARY TO
CONFIRM LASER BEAM EMISSION. BE SURE TO OBSERVE
FROM A DISTANCE OF MORE THAN 30cm FROM THE
SURFACE OF THE OBJECTIVE LENS ON THE OPTICAL
PICK-UP BLOCK.
CLASS 1
KLASSE 1
LUOKAN 1
KLASS 1
LASER PRODUCT
LASER PRODUKT
LASER LAITE
LASER APPARAT
Precaution to replace Optical block
1) After the connection, remove solder shown in
the figure below.
Body or clothes electrostatic potential could ruin
laser diode in the optical block. Be sure ground
body and workbench, and use care the clothes
do not touch the diode.
Solder
ZA8/ZD8 MODEL
ZA3/ZA4 (KSS-213F) MODEL
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4
NOTE ON BEFORE STARTING REPAIR
Charging voltage (V) Discharging Rated power (W) Parts number
(C101, 102) resistor (Ω)
25-48 100 3 87-A00-247-090
49-140 220 5 87-A00-232-090
Note: The reference numbers (C101, C102) of the electrolytic capacitors can change depending on the models. Be sure to check the
reference numbers of the charging capacitors on schematic diagram before starting the discharging work.
2. Check items before exchanging the MICROCOMPUTER
Be sure to check the following items before exchanging the MICROCOMPUTER. Exchange the MICROCOMPUTER after confirming
that the MICROCOMPUTER is surely defective.
2-1. Regarding the HOLD terminal of the MICROCOMPUTER
When the HOLD terminal (INPUT) of the MICROCOMPUTER is “H”, the MICROCOMPUTER is judged to be operating correctly.
When this terminal is “L”, the main power cannot be turned on. Therefore, be sure to check the terminal voltage of the HOLD
terminal before exchange.
When the MICROCOMPUTER is not defective, the HOLD terminal can also go “L” when the POWER AMPLIFIER has any
abnormalities that triggers the abnormality detection circuit on the MAIN C. B. that sets the HOLD terminal to “L”.
• Good or no good judgement of the MICROCOMPUTER
1 Turn on the AC main power.
2 Confirm that the main power is turned on and the HOLD terminal of the MICROCOMPUTER keeps the “H” level or not.
3 When the HOLD terminal is “L” level, the abnormality detection circuit is judged to be working correctly and the
MICROCOMPUTER is judged to be good.
1. Forced discharge of electrolytic capacitor of power supply block
When repair is going to be attempted in the set that uses relay circuit in the power supply block, electric potential is kept charged across
the electrolytic capacitors (C101, 102) even though AC power cord is removed. If repair is attempted in this condition, secondary defect
can occur.
In order to prevent the secondary trouble, perform the following measures before starting repair work.
Discharge procedure
1 Remove the AC power cord.
2 Connect a discharging resistor at an end of lead wire that
has clips at both ends. Connect the other end of the lead
wire to metal chassis.
3 Contact the other end of the discharging resistor to the
positive (+) side (+VH) of C101. (For two seconds)
4 Contact the same end of the discharging resistor as step 3
to the negative (-) side (-VH) of C102 in the same way.
(For two seconds)
5 Check that voltage across C101 and C102 has decreased
to 1 V or less using a multimeter or an oscilloscope.
Select a discharging resistor referring to the following table.
MAIN C.B
D101
C101 C102
34
22
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5
In such a case, check also if the POWER AMPLIFIER circuit or power supply circuit has any abnormalities or not.
2-2. Regarding reset
There are cases that the machine does not work correctly because the MICROCOMPUTER is not reset even though the AC power
cord is re-inserted, or the software reset (pressing the STOP key + POWER key) is performed.
When the above described phenomenon occurs, it can lead to wrong judgement as if the MICROCOMPUTER is defective and to
exchange the MICROCOMPUTER. In such a case, perform the forced-reset by the following procedure and check good or no
good of the MICROCOMPUTER.
1Remove the AC power cord.
2 Short both ends of the electrolytic capacitor C113 that is connected to VDD of the MICROCOMPUTER with tweezers.
3 Connect the AC power cord again. If the MICROCOMPUTER returns to the normal operation, the MICROCOMPUTER is
good.
Note: ThereferencenumberorMICROCOMPUTERpinnumberoftransistor(Q110)andelectrolyticcapacitor(C113)canchangedepending
on the models. Be sure to check the reference numbers on schematic diagram before starting the discharging work.
2-3. Confirmation of soldering state of MICROCOMPUTER
Check the soldering state of the MICROCOMPUTER in addition to the above described procedures. Be sure to exchange the
MICROCOMPUTER after surely confirming that the trouble is not caused by poor soldering but the MICROCOMPUTER itself.
Fig-2-2
MICRO-
COMPUTER
MICROCOMPUTER
FRONT C.B
FRONT C.B
VSS
VDD
C113 18
15
C113
18
15
Short with tweezers.
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