Technics SA 130 Service Manual

Page 2

I AM TUNER SECTION

Frequency range 527~1605 kHz
Sensltlvlty (SIN 20:18) 20W, 300pV/m
Selectivity 27 dB
Image rejection at 1,000kHz 40dB
IF rejection at 1,000kHz 55dB
I CONTENTS
Page
PROTECTION CIRCUITRY ...................... 2
BEFORE REPAIR AND ADJUSTMENT .............. 2
LOCATION OF CONTROLS ..................... 3
DISASSEMBLY INSTRUCTIONS ................ 4, 5
DIAL CORD INSTALLATION GUIDE ............... 5
MEASUREMENTS AND ADJUSTMENTS ........... 6, 7
RESISTORS & CAPACITORS .................... 8

I PROTECTION CIRCUITRY

The protection circuitry may have operated if either of
the following conditions is noticed:

-No sound is heard when the power is turned on.
OSound stops during a performance.

The function 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 the amplifier are used.

I BEFORE REPAIR AND ADJUSTMENT

I GENERAL

Power consumption 180W
Power supply AC 50 Hzl60 Hz. 220V
Dimensions (W x H x D) 430 x 97 x 249mm

(16-15116" x 3-13/16" x 9-13/16")
Weight 5.0 kg (1 1 .0 lb.)
Note:

Specifications are subject to change without notice.
Weight and dimensions are approximate.

Page
PRINTED CIRCUIT BOARDS AND
WIRING CONNECTION DIAGRAM 9, 10
BLOCK DIAGRAM ........................ 11, 12
TERMINAL GUIDE OF
TRANSISTORS, DIODES AND iCS .......... 11, 12
REPLACEMENT PARTS LIST ................... 13
SCHEMATIC DIAGRAM .................... 14~18
EXPLODED VIEWS ....................... 19, 20

If this occurs, follow the procedure outlined below.

1. Turn off the power.

2. Determine the cause of the problem and correct it.
3. Turn on the power once again.

Note:

When the protection circuitry functions, the unit will
not operate unless the power is first turned off and then
on again.

1. Turn off the power supply and short-circuit both ends of the power supply capacitors (C701, C702, 4700uF) with a

resistor (about 10!), SW) to discharge the charged voltage.
screwdriver. It may damage the component.

Do not short both ends of C701 and C702 with a

2. Before turning on the power supply after completion of repair, slowly apply the primary voltage by using a power
supply voltage controller to make sure that the consumed current is free of abnormality. The consumed current at
50 Hz in no signal mode is shown below with respect to supply voltage 220V.

Power supply voltage

AC 220V

Current consumed 50/60 Hz 50~15O mA