Technics SA 160 Service Manual

Page 2

I SCH EMATIC DIAG RAM

(This schematic diagram may be modified at any time with
the development of new technology)

Note 1:

0 S1~S10 : Preset tuning switches.
[51:1.32:2,3323.54:4,S5,5, ]

SS: 6, S7: 7, SB: 8, $9: 9. $102 0

I511 : Memory-scanigroup-search switch.

I S12 : FM mode select switch. (AUTOHMONO)

- S13, $14 : Band selectors.
813: FM, S14: AM

. $18, 517 : Character-inputltuning switches.
S16: down, S17: up

- S18 : Change-mode selector.

- S19 : Assert-mode selector.

0 320 : Group select switch.

- S21 : Memory switch.

- $22 : Loudness switch,

- 523~521 : Input selector switches.

[523: phone, 325: tuner, $25: CD, ]
826: VCFH, $27: tape/VCRZ
- 8601-1, 5601-2 : Speaker selectors.

5601-1: main, $6014: remote

- S701 : Power switch in "on" position.

' Signal line
=9: B.P.F. signal d : FM signal
DEIEIEID 3 FM 086 fi : AM signal
.I...: AM 050 :AF slgnai (Lch)

m I Phono signal
--< >- : Positive voltage lines
__< >_. : Negative voltage lines
- Important safety notice:
Components identified by A mark have special
characteristics important for safety. When replacing any of
these components, use only manutacturer's speedier]
parts. Indicated voltage values are standard values for the
unit measured by the DC electronic circuit tester (high-
impedance) with the chassis taken as standard. Therefore.
there may exist some errors in the voltage values, depending
on internal impedance of the DO circuit tester.
. All voltage values shown in circuitry are DC voltage in FM
signal (Stereo signal) reception mode.
>i< Figures In ( )Stand tor Dc-voltage in AM signal reception
mode

Caution!
i0 and LSI are sensitive to static electricity.
Secondary trouble can be prevented by taking care during
repair.
* Cover the parts boxes made of plastics with alminum toil.
Ground the soldering iron.
Put a conductive mat on the work table.
Do not touch the legs of IC or LSI with the fingers directly.

/ Notez:

i 0 Use at ceramic litters in pairs

The ceramic tillers (CF201,CF202)torFM-1F circuit are

available in three ranks. For this circuit, be sure to use the
ceramics oi the same rank in a pair.
At repairing and replacement, pay close attention to the
diodes (0914, D915) tor use as dilierent diodes must be used
depending on each rank oi the ceramic lilters.

fnz'iaiiéllfi (:31: mm nm @332ch
Black 0 x 10.65MHz
Fied x x 10.7OM Hz
White 1 x 0 1075

Note: 0 mark: Diode is used.
x mark: Diode is not used,

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