Technics SUV 4 X Service Manual

Page 2

I GENERAL
Power consumption 390 W Note:
Power supply Total harmonic distortion is measured by the digital spectrum ana-
For United Kingdom lyzer (HP. 3045 system).
AC 50 Hz/60 Hz, 110 WI 20 V/220 V/240 V
For continental Europe AC 50 HUGO Hz, 220 V
For others AC so Hz/60 Hz. 110 W120 W220 W240 v _ _ _ , _ _
Dimensions (WXHXD) 430x97><290 mm fSpe;uf1c:tro_ns are subject to change Without notice
(16-15/16"x3~27/32"><11-7/16") °' " 8 'mpmwmem'
Weight 6.7 kg
(14.3 lb.)
Page
SAFETY PRECAUTION ....................... 2 BLOCK DIAGRAM ........................

LOCATION OF CONTROLS .
PROTECTION CIRCUITRY

. . 3 WIRING CONNECTION DIAGRAM (Top t . .
. 4 PRINTED CIRCUIT BOARDS ................
6

BEFORE REPAIR AND ADJUSTMENT . . . 1 . . . I : . . . 1a~ SCHEMATIC DIAGRAM .......
TERMINAL GUIDE 0F TRANSISTORS, EXPLODED VIEW ....... . .
DIODES AND IC'S ...................... 6 REPLACEMENT pARTs LIST _ _ , , , .
FUNCTION OF TERMINAL RESISTORSE: CAPACITORS .................... 24
IICO control ICZI: MN1404STE) ................ 7
FUNCTION OF TERMINAL (Analog function control
ICMM: SVIUP07506C043) . . . . 8

I SAFETY PRECAUTION

. Before servicing, unplug the power cord to prevent an electric shock.

When replacing parts, use only manufacturer's recommended components for safety.

Check the condition of the power cord. Replace if wear or damage is evident.

After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.

Before returning the serviced equipment to the customer, be sure to make the following insulation resistance test to
prevent the customer from being exposed to a shock hazard.

.UPPN

o INSULATION RESISTANCE TEST
.Unplug the power cord and short the two prongs of the plug with a jumper wire

2. Turn on the power switch.

3. Measure the resistance value with ohmmeter between the jumpered AC plug and each exposed metal cabinet part, such as
screwheads antenna, control shafts, handle brackets, etc. Equipment with antenna terminals should read between 3M9
and 5.2M!) to all exposed parts. (Fig. A) Equipment without antenna terminals should read approximately infinity to
all exposed parts. (Fig. Bl

Note: Some exposed parts may be isolated from the chassis by design. These will read infinity.

Antenna
terminal \.

Exposed Exposed
metal metal
part part
Ohrnmotor Ohmmeter
(FioAi (Fig. 5)
Resistance = 3 M9-5.2MQ Resistance = Approx 00

4. If the measurement is outside the specified limits, there is a possibility of a shock hazard. The equipment should be
repaired and rechecked before it is returned to the customer.