Technics SUV 500 Service Manual

Page 1

ORDER NO. AD940306608

Service Manual

Stereo integrated Amplifier

Specifications (DIN 45 500)

20 Hz - 20 kHz continuous power output

both channels driven 2 x 30 W (8 n)
' 40 Hz -- 20 kHz continuous power output
both channels driven
For (GO) area only 2 x 27 W (8 Q)
1 kHz continuous power output both ,
channels driven (THD: 1%) 2 x 38 W (8 $2)
2 x so w (4 o)
For (GO) area only 2 x 38 W (8 Q)
2 x 40 w (4 n)
63 Hz - 12.5 kHz continuous power output
both channels driven (THD: 1%) 2 x 35 W (8 fl)
2 x 45 w (4 9)
For (so) area only 2 x 30 W (8 Q)
2 x 35 w (4 $2)
Total harmonic distortion rated power at .
20 Hz-2o kHz 0.1% (s c)
lntermocluiation distortion (50 Hz: 7 kHz = 4:1, EMPTE)
rated power 0.1% (8 9)
Residual hum and noise 1 mV
Damping factor 60 (B (2)
3O (4 It)
Headphones output level/impedance 340 mV/47 52
Load impedance _
A or B 4 - 16 Q
A and B 8 - 16 52
input sensitivity/impedance
PHONO MM 2.5 mV/47 k9
TUNER, CD, AUX, TAPE 1, TAPE ZIDCC 150 mV/22 k9
Phono maximum input voltage (1 kHz, HMS)
MM 150 mV (lHF 66)
SIN (rated power, 49)
PHONO MM 76 dB (77 dB, IHF 66)
For (66) area only 76 dB (76 dB. lHF 66)

TUNER, CD, AUX, TAPE 1, TAPE ZIDCC
90 dB (95 dB. IHF 66)

For (GO) area only 90 dB (94 dB, lHF '66)
SIN at - 26 dB power (4 Q)

PHONO MM 67 dB

TUNER, CD, AUX, TAPE 1, TAPE ZIDCC 70 dB
SIN at 50 mW power (4 £2)

PHONO MM 63 dB

TUNER, CD, AUX, TAPE 1, TAPE 210cc 63 dB

Technics

Amplifier
SU-VSOO
Colour
(K) -
Areas
Suffix for Area Colour
Model No.
(E) Europe

(EB) Great Britain

(EG) Germany and Italy

(E0) Switzerland (K)

Asia, Latin America,
(GO) Middle Near East and
Africa

(GN) Oceania

Frequency response
PHONO MM RiAA standard curve at dB
(30 Hz e 15 kHz)

TUNER, CD, AUX, TAPE 1, TAPE mom
3 H2 - 80 kHz (+0, -3 dB)
+0 :18, - 0.3 cIB (20 Hz -20 kHz)

Tone controls

BASS 50 Hz, +10 to -10 dB

TREBLE 20 kHz. +10 to -1 0 dB
Output voltage

TAPE 1, TAPE ZIDCC REC OUT 150 mV
Channel balance (AUX 250 Hz - 6.3 kHz) 21 dB
Channel separation (AUX 1 kHz) 50 dB
GENERAL
Power consumption ' 130 W
Power supply

50 Hz/60 Hz AC, 230 V
50 Hfl60 Hz AC, 230 V - 240 V

For (E), (EG), and (E0) area
For (EB), (GN) areas

For (Gtc) area only 50 Hz/BO Hz AC, 110 V - 127 V l 220 V - 240V
Dimensions (W x H x D) 430 x 125 x 310 mm
Weight 6.0 kg

For (60) area only 5.4 kg
Notes: ~

1. Specifications are subject to change without notice.

Weight and dimensions are approximate
2. Total harmonic distortion is measured by the digital spectrum analyzer.
3. For areas except Europe

The specification values given have been measured while using a 240 V

power supply.

For (EB) area only
This apparatus was produced to BS 800.

Page 2

SU-V500

I Contents

0 Before Repair .....
0 Protection Circuitry
I Accessories ...............
0 Caution tor Mains Lead
0 Front Panel Controls .

0 Block Diagram ......
2 _' Schematic Diagram .
2 OWin'ng Connection Diagram
3 I Printed Circuit Board Diagram
. 4 0 Function of IC Terminals

6

8

9

0 Connections 0 Replacement Parts List
0 Listening to Soun 0 Packaging .

0 Recording ........... O Cabinet Parts Location
0 Operation Check and

Main Component Replacement Procedures .

I Before Repair

(1) Turn off the power supply. Using a 10 (Z, 10 W resistor, connect both ends of powersupply capacitors (C701, C702) in order to discharge the voltage.
(2) Before turning the power supply on, after completion of repair, slowly apply the primary voltage by using a power supply voltage controller to make
sure that the consumed current at 50/60 Hz in NO SIGNAL mode should be shown below with respect to supply voltage 110 V/127 V/220 V/240 V.

Power supply voltage AC 230 v AC 240 v AC 1 10~127 v AC 220~24o v

Consumed current 50Hz 47~157 mA 45~150 mA 80-300 mA 45-450 mA

I Protection circuitry

The protection circuitry may have operated it either of the following conditions is noticed:
* No sound is heard when the power is switched ON.
=1: Sound stops during a performance.
The functions of this circuitry is to prevent circuitry damage if, for example; the positive and negative speaker connection wires are "shorted", or if
speaker systems with an impedance less than the indicated rated impedance of this unit are used.
it this occurs. follow the procedure outlined below:
1. Switch OFF the power.
2. Determine the cause of the problem and correct it.
3. Switch ON the power once again.
Note:
When the protection circuitry functions, the unit will not operate unless the power is first switched OFF and then ON againt

For eras except (E) (EB) (EG) (E0) (GN)
CAUTION:
The AC voltage differs according to the area.

Be sure to set the proper voltage in your area befor use.
(For details, please refer to page 6.)

I Accessories

I AC power supply cord ................................................................. 1

for (E), (EG), (E0), (G0) areas : (RJA0019-2K) for (EB) area: (VJA0733) for (GN) area: (FlJAOOSG-K)
6 Remote control transmitter - Batteries 0 Powar plug adaptor
(RAK-SU129WH) ........................ 1 (UM-4, AAA", R03) .................................. 2 (SJP5213-2) ............................................. 1

Note: These are available on sales route. for (GO) area only

Q