Technics SH-8055 - Page 29

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li SCHEMATIC DIAGRAM
(This schematic diapram may be modified at any time with the devel-
opment of new technology.)
e Spectrum analyzer
© The part No. of transistros, IC and diodes mentioned in the schematic diagram
stand for production part No. Regarding the part No. whith @ mark, the
production part No. are different from the replacement part No. Therefore,
when placing an order for replacement parts, pleases use the part No. in the
replacemnt parts list.
Notes:
1. This is basic circuit diagram (For continental Europe) of this unit.
2. Regarding the circuits to be changed in the basic circuit diagram
(For continental Europe) and related areas ([PA] , [PE] and [XA])
refer to the booklet contains (Order No. SD83062526C9—A).
3. S1~S3 : Input selector in “source” position.
(S1-1 ~ 1-3 : source, 2-1 ~ S2-6 : Tape 1, S3-1 ~ S3-5: Tape 2)
S4—1 ~ S42 : Pink noise generator switch in “off” position.
S5—1 ~ S5—6:: Equalizer on/off selector in “on” position.
6. S6—1 ~ S6—2 : Recording mode selector in “EQ” position.
(straight =» EQ)
os
7. 87-1 ~$7-2 : Display mode (left channel) switch in “on” position.
8. S8—1 ~ S8-2 : Display mode (right channel) siwtch in “on” position.
9. $91 : Microphone attenuator switch in “OdB” position.
(0d8 ++ —20dB)
* $92 is muting switch incase attenuator selection.
10. $10 : Power source switch in “on” position.
11, S11 : Voltage selector in “220V" position.
(110V «+ 120V +»220V =» 240V)
12. The circuit is same for both L and R channels.
13. Indicated voltage values are the standard values for the DC electronic
circuit tester (high impedance) with the ground point taken as standard.
Therefore, there may exist some errors in the voltage volues, depending on
the internal impedance of the DC circuit tester.
14. Signal lines of left channel.
15, ss sos of Signal lines of band pass filter.
16, coor Signal lines of mic.
7. — Positive (+B) voltage lines.
18. Important safety notice:
Components identified by A\ mark have special characteristics important
for safety. When replacing any of these components, use only manufacture-
rs specified parts.
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