Technics SA-EX100 Service Manual page 11

SA-EX100
Ш Schematic Diagram
(All schematic diagrams may be modified at any time with the development of new technology)
Note :
« for Headphone Jack circuit and Operation circuit > (Page 11)
« for Tuner circiut > (Page 12 - 15)
« for Main circuit > (Page 16 - 17)
< for Power Supply circuit, Transformer circuit, Panel circuit and Volume circuit > (Page 18 - 20)
* S946 : Power switch * S962 Tape select switch
* S947 ES Phono select switch • 5964 i VCR select switch
* S948 : Muting switch «5970 : Search select switch
* $950 : FM Auto/ Mono switch * S971 2 Enhanced other network select switch
• S951 2 Band select switch * 5972 : Program type increase switch
s 5952 : Tuning decrease switch . * 5973 : Program type decrease switch
® $953 5 Tuning increase switch * 5974 : Display mode select switch
* 5954 : Memory manual/auto switch * S980 : Speakers on/off switch
* S956 2 Preset decrease switch * VR501-1- VR501-2 : Volume control
* 5957 Н Preset increase switch * VR502 Н Balance control
* S960 ў Tuner select switch e VR511-1- VR511-2 : Bass control
* 5961 : CD select switch УН512-1-УВ512-2 : Treble control
* Signal line
: +Bline ET. : AMsignalline
Main signal line ЕЕ» : AM OSC signal line‫‏‬ : ‫و‬
[У : ЕМ signal пе DO : FM OSC signal line‫‏‬
«Тһе voltage value and waveforms are the reference voltage of this unit measured by DC electronic voltmeter (high impedance) and oscilloscope on
the basis of chassis.
Accordingly, there may arise some error in voltage values and waveforms depending upon the intemal impedance of the tester or the measuring
unit.
elmportance safety notice:
Components identified by ÁN mark have special characteristics important for safety. Furthermore, special parts which have purposes of fire-
retardant (resistors), high-quality sound (capacitors), low-noise (resistors), etc. are used. When replacing any of components, be sure to use only
manufacturer's specified parts shown in the parts list.
Caution !
ІС, LSI and VLSI are sensitive to static electricity.
Secondary trouble can be prevented by taking care during repair.
«Соуегіһе parts boxes made of plastics with aluminium foil.
«Ground the soldering iron.
*Do not touch the pins of IC, LSI or VLSI with fingers directly.
«Рша conductive mat on the work table.
HEADPHONE
JACK CIRCUIT
TO ІН
PANEL CIRCUIT
(CP501)
(PAGE 20)