Technics SAGX 130 Service Manual

Page 2

SA-GX130

I AM TUNER SECTION

Frequency range

MW 522 kHz~1611 kHz (9~kHz steps)
530 kHz~1620 kHz (1 o-kHz steps)

LW 144 kHz~286 kHZ
Sensitivity (SIN 20 dB)

MW 20 uV. 330 uV/m

Lw 45 W
Selectivity (:9 kHz)

MW (at 999 kHz) 55 dB

LW (at 252 kHz) 55 dB
Image rejection

MW (at 999 kHz) 40 dB

LW (at 252 kHz) 40 dB
IF rejection

MW (at 999 kHz) 55 dB

LW (at 252 kHz) 55 dB

CO NT ENTS

I Page
ACCESSORIES ............................................................................... 2
BEFORE USE

CONNECTIONS TO EQUIPMENT ....................
FRONT PANEL CONTROLS AND FUNCTIONS
REMOTE CONTROL OPERATION
DISASSEMBLY INSTRUCTIONS...

MEASUREMENTS AND ADJUSTMENTS 13
TERMINAL FUNCTION OF IC....... 14
INTERNAL CONNECTION OF FL 15

I GENERAL

Power consumption I 200 W
Power supply AC 50 Hz/60 Hz, 230 VI24O V
Dimensions (w x H x D) 430 x 125 x 305 mm
Weight 6.5 kg

I REMOTE CONTROL TRANSMITTER

Control keys 32 keys
Dimensions (w x H x D) 70 x 175 x 27 mm
Weight (including batteries) 125 9
Power source TWO "AAA" (UM-4. R03)

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.

BLOCK DIAGRAM ..... .
SCHEMATIC DIAGRAM . 19~26
TERMINAL GUIDE OF ICS TRANSISTORS AND DIODES . 20
WIRING CONNECTION DIAGRAM...
PRINTED CIRCUIT BOARDS ..
EXPLODED VIEWS ...........
REPLACEMENT PARTS LIST.
RESISTORS & CAPACITORS .
PACKAGING ..

I ACCESSORIES
- AC power supply cord .......... 1 p0. - AM loop antenna 0 Flemoie control transmitter
(RJA0019-1K): (E) (SPB1163'I) ................... .1 pc. (RAK-SA302E) ................. 1 pc.
(SJA193): (EB) \
//
0 AM antenna holder
(SMA231M) _________________ 1 pc. -Batteries(UM-4, AAA' F103). 2 pcs.
0 FM indoor antenna
(RSAOOO7) .................... 1 pc. Willi] - (Q .
- Screws (XTN3+10AFZ) ....... 2 pcs. 0 Attachment plug ............... 1 pc.
(SJPQODQ): (EB)
9" a @

IBEFORE USE

Be sure to disconnect the mains cord before adjusting

the voltage selector.

Note that this unit will be seriously damaged it this

setting is not made correctly.

Use a flat-tip (-) screwdriver to set'the voltage selector
(on the rear panel) to the voltage setting for the area in

which the unit will be used.

(Ill

(I

1 i

Page 4

SA-GX13O SA-GX130

- FRONT PANEL CONTROLS AND FUNCTIONS

Tuner section

(D Power d) STANDBYION switch
(POWER, (I) STANDBY/ON)
This switch switches ON and OFF the secondary circuit
power only. The unit is in the standby" condition when this
switch is set to the (b STANDBY position. Regardless of the
switch setting, the primary circuit is always live as long as
the power cord is connected to an electrical outlet.

® Remote control signal receptor
(REMOTE SENSOR)

Receives the signals from the remote control.

(33 STANDBY indicator (STANDBY)
This indicator illuminates when the STANDBY mode is set
by the main unit or the remote control transmitter.

@ Channel display
This display shows the channel number selected by one at
the preset-tuning buttons.
Also this display shows the channel number for about 3
seconds during memory scan operation.

® Quartz-lock indicator (QUARTZ LOCK)
This indicator illuminates when the unit is tuned precisely to
a broadcast station.

© Memory indicator (MEMORY)
This indicator illuminates when the memory button is press-
ed.

® FM stereo indicator (FM ST)
This indicator automatically illuminates when an FM stereo
broadcast is being received.
Note:
It will not illuminate if the FM mode selector is set to the
monaurai mode.

Memory scan indicator (M. SCAN)

This indicator illuminates when the memory scan button is
pressed.

-5-

®

®

®

Band indicators (FM, LW, MW)

Indicates the selected band.

Input selectorltrequency display
(INPUT SELECTORIFREQUENCY)

Displays the selected source or broadcast frequency.

Memory scan button (MEMORY SCAN)
This button is-used to locate a desired broadcast station;
each broadcast station is selected for about 3 seconds.

Tuning buttons (TUNING)
These buttons are used for tuning to the desired broadcast
station,

Memory button (MEMORY)
This button is used when presetting broadcast station fre-
quencies into memory.

Preset-tuning buttons (1 -0)

(30 CHANNEL RANDOM PRESET TUNING)
These buttons are used to preset broadcast frequencies into
the memory of this unit and to recall the desired preset sta-
tions.

Band selectors (FM, LW, MW)

FM: Press this button to listen to an FM broadcast,

LW: Press this button to listen to an LW broadcast.

MW: Press this button to listen to an MW broadcast.
ALLOCATION: When the MW button is pressed for about 3
seconds, the MW frequency step will change to 10 kHz per
step. (This step is set to 9 kHz before shipment.) In order to
return to the original frequency indication, press this button
for about 3 seconds again.

FM mode selector (FM MODE)

This unit automatically switches to the stereo mode when an
FM stereo broadcast is received. This selector is used to
select the mode (stereo or monaural) of FM broadcast
signals.

Amplifier section

CD

<29®<>

e <9

Tschnlcs Air (2on stated mews 5M: tan

- Dan-m mm fibre? EH 105}?
-Ei """"""" .

mm:

- we own
"in!

<9 <9

iv: We... .. I .... 1 ..., II-
E I I- I MW Win-£5 Mum:
gm, I l $.40"
® ® (Ii)

Speaker selectors (SPEAKERS)

These selectors are used to select the speaker system(s) (A
and/or B).

Muting indicator (MUTING)
This indicator will illuminate when the muting button (on the
remote control transmitter) is pressed.

Loudness indicator (LOUDNESS)

This indicator will illuminate when the loudness button is
pressed.

Tape indicator ( TAPE )
This indicator will illuminate when the tape-monitorNCR 2
button is pressed.

Volume control (VOLUME)

Tone controls (BASS, TREBLE)

The bass control is used to adjust the low-frequency sound
range, and the treble control is used to adjust the high-fre-
quency sound range.

Headphones jack (PHONES)

Input selector buttons

These buttons are used to select the sound source to be
heard, such as a disc, radio broadcasts, etc. The selected
sound source is shown on the input selector/frequency
display,

The PHONO input selector has two functions: when press-
ed momentarily it selects PHONO". When pressed and held
for about 4 seconds, it de-activates the muting function,

(9 Tape-monitorIVCR 2 button

(TAPE MONITORIVCR 2)

Press this button to listen to a tape or second VCR con-
nected to the "TAPE/VCR 2 terminals.

To listen to some other source. press this button once again
(so that the Indicator is switched OFF),

Loudness button (LOUDNESS)

Set to the "ON position (the loudness indicator will il-
Iuminate); when listening to music at low volume. Auditory
perception of sound in the low frequency range falls off at
low volume, but when the switch is in this position, this defi-
ciency is compensated for, so that the full impact of the
musical performance can be enjoyed.

® Balance control (BALANCE)