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U-B022/K
TECHNISCHE OATEN
[DIN 45 500] Spezifikationen konnen infolge von Verbesserungen oh ne Ankundigung geiindert werden.
VERSTARKERTEIL
Dauertonleistung bei 20 Hz -20 kHz beide Kaniile zusammen ausgesteuert
Dauertonleistung bei
40 Hz -16 kHz beide Kaniile zusammen ausgesteuert
Dauertonleistung bei 1
kHz beide Kaniile zusammen ausgesteuert
2x 35W (SO)
2x 40W (40) 2 x 35 W (So)
2 x 45 W (4D), 2 x 38 W (SO)
Leistungsbandbreite beide Kaniile zusammen ausgesteuert,
-3 dB
5 Hz -30 kHz (40) 5 Hz -30 kHz (SD)
Harmonische Verzerrungen
Nennausgangsleistung bei
20 Hz - 20 kHz 0,05% (4D) 0,03% (So) Nennausgangsleistung bei 40 Hz -16 kHz 0.05% (40),0,03% (So) Nennausgangsleistung bei 1 kHz 0,05% (4D), 0,03% (SO)
Halber Ausgangsleistung bei 20 Hz -20 kHz 0,02% (S D)- Halber Ausgangsleistung bei 1 kHz O,OOS% (S D) _ -26 dB Ausgangsleistung bei 1 kHz 0,15% (40) 50 mW Ausgangsleistung bei 1 kHz 0,2% (4D) Intermodulationsverzerrung
Nennausgangsleistung bei 250 Hz: 8 kHz = 4:1, 4D 0,05%
Nennausgangsleistung bei 60 Hz: 7 kHz = 4:1, SMPTE 8D
Brummen & Rauschen Diimpfungsfaktor Eingangsempfindlichkeit & Impedanz 0,03%
0,6
mV (0,6 mY, IHF) 16 (40), 32 (SO)
PHONO 2,5
mV /47 kD TUNER,AUX 150mV/27kD TAPE 1, PLAYBACK lS0 mV/33 kD PHONO Maximale Eingangsspannungen (1 kHz RMS) 150 mV
Fremdspannungsabstand
Nennausgangsleistung bei 4 D
PHONO
72 dB (lHF, A: SO dB) TUNER, AUX S6 dB (lHF, A: 97 dB) -26 dB Ausgangsleistung bei 4D PHONO 62 dB TUNER,AUX 63dB 50 mW Ausgangsleistung bei 4D PHONO 62 dB TUNER,AUX 62 dB
Frequenzgang PHONO RIAA Standardkurve 30 Hz-15 kHz,±O,S dB TUNER, AUX, TAPE 20 Hz-20 kHz,±0,5 dB 10 Hz -50 kHz, -1 dB BASSE 50Hz,+10dB--l0dB HOHEN 20kHz,+10dB--l0dB Unterschallfilter 30 Hz, -6 dB/oct.
Klengragler
Hochton filter 7 kHz, -6 dB/oct. Gehorgerechte Lautstiirkekonektur (Lautstiirke bei -30 dB)
AusgangtlPllnnungen & Impedanz REC OUT REC/PLAY Kanalabweichung (250 Hz -6300 Hz), AUX Kanaltrennung bei 1 kHz, AUX Kopfhorerpagel und Ausgangsimpedanz
Lautsprecher·Ausgangsimpedanz
MAIN oder REMOTE MAIN und REMOTE
ALLGEMEINE OATEN
50 Hz, +9 dB 150mV 30 mV/S2 kD ±l,OdB 55dB 330 mV/330D
Leistungsaufnahme 400 W
Netzspannung umschaltbar (50 Hz/60 Hz) 110V/120V/220V/240V Abmessungen (B x H x T) 430 x 97 x 240 mm Gewicht 5.4 kg
CARACTERISTIOUES TECHIOUES
[DIN 45 500] Sujet a changement sans prElaris.
PARTIE AMPLlFICATEUR
Puissance de sortie continue de 20 Hz -20 kHz les deux canaux en circuit avec distorsion
Puissance de sortie
continue de 40 Hz -16 kHz les deux canaux en circuit avec distorsion
Puissance de sortie
continue a 1 kHz les deux canaux en circuit avec distorsion
Largeur de bande de puissance 2 x
35 W (So)
2 x 40 W (4D) 2 x 35W (SD)
2 x 45 W (4D) 2 x 38 W
(SO)
pour I'ensemble des canaux excites, -3 dB 5 Hz - 30 kHz (4D) 5 Hz - 30 kHz (So) Distorsion harmonique totale pour la puissance mesuree a 20 Hz -20 kHz 0,05% (40) 0,03% (SO) pour la puissance mesuree a 40 Hz -16 kHz 0,05% (4D), 0,03% (Sm pour la puissance mesuree a 1 kHz 0,05% (40),0,03% (SD) pour la demi'puissance mesuree a 20 Hz -20 kHz 0,02% (SO)
pour la demi·puissance mesuree a 1 kHz O,OOS% (So) pour une puissance mesuree de -26 dB, 1 kHz 0,15% (4D) pour une puissance mesuree de 50 mW, 1 kHz 0,2% (4D) Distorsion d'intermodulation pour la puissance mesuree a 250 Hz: 8 kHz = 4: 1, 4D 0,05% pour la puissance mesuree a 60 Hz: 7 kHz = 4:1, 8D 0,03%
Tension residuelle de bruit 0.6 mV (0.6 mV, I H F) Facteur d'amortissement 16 (4D), 32 (SO)
Sensibilite & impedance d'entree
PHONO
TUNER,AUX TAPE 1, PLAYBACK
2,5 mV/47 kD 150mV/27kD lS0 mV/33 kD
Voltage d'entree maximum (PHONO, 1 kHz, RMS) Repport signal/bruit 150mV
pour la puissance nominale, 4D PHONO TUNER,AUX pour une sortie de -26 dB, 4D
72 dB (lHF, A: SO dB) S6 dB (iHF, A: 97 dB)
PHONO 62dB TUNER,AUX 63dB pour une sortie de 50 mW, 4D PHONO 62 dB
Reponse de frilquence
PHONO
TUNER,AUX
TUNER,AUX,TAPE 62dB
eou rbe standard R IAA 30 Hz - 15 kHz, ±O,S dB 20 Hz -20 kHz, ±0,5 dB 10 Hz -50 kHz, -1 dB Reglage de la tonalite BASS (graves) 50 Hz, +10 dB --10 dB TREBLE (aigus) 20kHz,+10dB--l0dB Filtre subsonique 30 Hz, -6 dB/oct. Filtre haut 7 kHz, -6 dB/oct. Correction physiologique (volume a 30 dB) 50 Hz, +9 dB
Tension de sortie & impedance REC OUT 150 mV REC/PLAY 30 mV/S2 kD Equilibrage de canaux (250 Hz - 6300 Hz), AUX ± 1 ,g ~~ separation des canaux A!-,X 1 kHz . 5 D
Niveau du casque et impedance de sortie 330 mV /33g D
Impedance de charge MAIN ou REMOTE -4s~ ~6D MAIN et REMOTE-
GENERALlTES
Consommation Alimentation (50 Hz/60 Hz)
Dimensions (L x H x Pr)
Poids
400W 110V /120V /220V /240V 430 x 97-x240:mm 5:~g
- CONTENTS
LOCATION OF CONTROLS, .................. 3-4 NOTE ................................... 4 HOW TO REMOVE THE CABINET, BOTTOM BOARD AND FRONT PANEL ..........-.......... 4-5 BEFORE STARTING THE REPAIRING ............... 5 HOW TO REMOVE THE POWER IC ....--............ 5 PRINTED CIRCUIT BOARD WIRING VIEW .........- 6 -8 SCHEMATIC DIAGRAM .-.......-.......... 9 -12 BLOCK DIAGRAM OF INTEGRATED CIRCUITS ........ 12
- LOCATION OF CONTROLS
Speakers S'·lItf'h . ....<
Power
Bass Selector
switch
(tuner -phono -
Ba I """"' __
Treble
REC/PLAY (DIN
Tape deck
1-EPLAYn"" .. ,,---,
REC
Grou
-E
HO
Input TUN
AUx-----'
TERMINAL GUIDE OF TRANSISTOR & IC ............ 12 REPLACEMENT PARTS LIST (Electric Parts) ........... 13 BLOCK DIAGRAM ........................... 14 REPLACEMENT PARTS LIST (Cabinet and Chassis Parts) .... 14 EXPLODED VIEWS ....................... 15 -16 REPLACEMENT PARTS LIST (Accessories and
Packing Parts) ............................ 17 PACKINGS ............................... 17 ACCESSORIES ............................. 17 CHANGE OF PARTS LIST ...................... 18
ubsonic filter (. off .-on)
Volume
Tape monitor switch
(tape 1 -source -tape 2)
Recording mode switch
(tape 1
~ 2 - source -tape 2 ~ 1)
udness switch
Voltage adjuster
AC outlets
circuit protection fuses
* This photo shows only the products for (X) and (XA).
* The products for other destinations except (X) and (XA) are not equipped with AC outlets.
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"022/K SU-S022/K
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· ... 13
· ... 14 · ... 14 .15~16
· ... 17 · ... 17 · ... 17 · ... 18
2 ~ 1)
Jtlets
Left ch. power amplifier I
- NOTE
main Ctmplifier ci
Right ch. power amplifier le
Equalizer
amplifier circuitry
The unit is provided with the speaker circuit protection fuses at the right and left channels respectively. The fuse is to
prevent the power IC from destruction, should the speaker terminals be short-circuited. Accordingly, if the unit fails to
function upon completion of the speaker connections, check the speaker circuit protection fuses first of all for possible
blowing.
- HOW TO REMOVE THE CABINET, BOTTOM BOARD AND FRONT PANEL
How to remove the cabinet
1. Remove the 4 setscrews (CD ~ @ in Fig. 1) on the side and 4 setscrews (@~ ® in Fig. 2) on the back of the cabinet.
2. Shift the cabinet backward and lift it upward. (Arrow G in Fig. 1)
Fig. 1
How to detach the bottom board
1. Remove the 4 setscrews (@ ~ @ in Fig. 3) used to
secure bottom board and 4 setscrews ( ® ~ @ in
Fig. 3)
for the legs. Then the bottom board can be
detached.
Fig. 2
How
10 detach the front panel
1. Remove the 4 setscrews ( @ - ® in Fig. 4) and then
carefully pull the
front panel toward you.
~
y-® T
~ ~ (9)@ r® ,9 T ~set Foot @ ~
Bottom Board
Fig. 3
- BEFORE STARTING THE REPAIRING
Before adjusting or repairing, be sure to short-circuit
opposite poles
of the 8200pF capacitors (C501, 502) with a
resistor
approximately of "50[2, 5W" for discharging the
charged voltage .
Short-circuiting with a screw driver and the like is not only
dangerous, but may destroy transistors and diodes, and
should therefore be avoided.
- HOW TO REMOVE THE POWER IC
1. Remove the solder of power IC for both Lch
and Rch.
2. Remove the 3 setscrews
(CD -® in Fig. 5) use
to fasten the heat sink from the center bracket.
3. Remove the heat sink along with power IC in
the
direction of arrow G (Fig. 6)
4. Remove the 2 setscrews (@, CID in Fig. 6) used
to secure the power IC on the heat sink, and
then pull the power IC in the direction of arrow
@.
5. When mounting the power IC, apply silicone
compound (or equivalent heat diffuser) to the
back
of power I C, and then follow the steps 1
- 4 reversely.
POWER IC IIC3031 CENTER BRACKET
Fig. 5
POWER IC IIC3041
SU-8022/K
~ 19
i
Fig. 4
Electrolytic Capacitor Resistor(500,50W) r=J
Lspeaker Tenniral J Speaker Circuit Rear Panel Protection Fuses
PRINTED CIRCUIT BOARD
Fig. 6
LEFT CH POWER le
