Sansui SAX 200 Service Manual

Page 1

_
OPERATING INSTRUCTIONS

& SERVICE MANUAL
_

AM/ FM MULTIPLEX STEREO TUNER AMPLIFIER

SANSUI MODEL SAX-200

SANSUI ELECTRIC COMPANY LIMITED

Page 2

SAN SUI

AM / FM MULTIPLEX
STEREO TUNER
AMPLIFIER

is

MODEL

SAX-ZOO

Congratulations, you are now the owner of
a new SAX-200 FM multiplex stereo am-
plifier manufactured by SANSUI, the lead-
ing manufacturer of amplifiers, transformers
and other stereo audio sets.

SANSUIS technical staff has always en-
deavored to produce amplifiers that give
stereo fans every convenience and advan-
tage possible. This booklet explains the
steps necessary for operating and caring
for your new SAX-200. Read it carefully
and retain for future use.

Page 20

SERVICE NOTE

When the power switch is pushed,

electric supply will not be on.

Symptoms (l) - l

Symptoms ( 2 )

Likely defective places

Poor power switch.
Poor power cord.
Poor plug contact.

.0 .05?

Blown fuse.

(In case the fuse blows again upon fitting a
new one)

Replace it.

. Replace it.

Replace the plug or make the plug contact
better.

Replace it.

Short-circuit rearing in the power transformer
(T6) or short-circuit of path condenser (C39).

When the power switch is pushed,

electric supply will be on.

Symptoms ( l ) l

Symptoms ( 2 )

likely defective places

A. The amplifier does not work
at all.

1. Broken wires of vacuum tube heaters.

2. In case there is something wrong in the

vacuum tube and voltage in resp. places.

V,~V.. and silicon diodes.

Check the places where there is something
wrong in voltage.

Check the places where there is something

Insuflicient capacity of C9. Ct, poor IFT
(T.~T.) Short-circuit of C3. C21. C97, C44
Trouble in the local oscillating circuit of V1

If the FM tuner works normally. check VU~

Check the places where there is something

If the FM tuner works normally. it is caused
by insufficient capacity of C47. C._..C.~,1. Che,

Check the places where there is something

O.~\-91).

3. In case there is nothing wrong in the Check the input circuit after AUX.
vacuum tube and voltage in resp. places.
B. Only the FM tuner does not 1. Broken wires of vacuum tube heaters in Vl~V4
work at all. the FM system.
2. In case there is something wrong in the
. vacuum tube and voltage in resp. places wrong in voltage.
in the FM system.
. 3. In case there is nothing wrong in resp.
places in the FM system.
(5AQ8)
C. Only the FM-MPX system 1. Broken wires of vacuum tube heaters in i
does not work. the multiplex system. V;
2. In case there is something wrong in the
vacuum tube and voltage in resp. places wrong in voltage.
in the multiplex system. 1
3. In case there is nothing wrong in the
vacuum tube and voltage in the multiplex
system. C53, and poor L6, L5, L9
D Only the AM tuner does 1. Broken wires of vacuum tube heaters in V5, V2
not work the AM tuner system. .
2. In case there is something wrong in the wrong m voltage.
vacuum tube and voltage in resp. places
in the AM tuner system. Poor IET .(T5, T2) and poor diode
3. In case there is nothing wrong in the Short'crcmt 0f Cm afld Cu
vacuum tube and voltage in resp. places
in the AM tuner system.
E. The phono,ltape head sys- 1. In case of poor the TR head amplifier. Replace the TR head amplifier unit.
tems and mike do not work. 2. In case of the poor contact of the selector Replace it or repair the contact.

switch.

3. In case there IS something wrong in the
input circuit.
4. Poor condition of the attached appliances

connected.
Poor coupling condenser.

Poor contact and short-circuit of the input

terminal and pin jack.

C73! C23, C73: C19

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