Technics SAEX310 - RECEIVER, Service Manual

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SA-EX310
MTZJ5R1BTA
MTZJ5R6BTA
MTZJ7R5CTA
MTZJ9R1CTA
MTZJ6R2BTA
MTZJ15CTA
MTZJ6R8BTA
MTZJ4R7BTA
MTZJ3R9ATA
MTZJ10CTA
MTZJ27DTA
MTZJ24DTA
RVD1SS133TA
1SR35200TB
1SS291TA
MA165TA
Ca
A
Cathode
Anode
Ca
Cathode
Anode
A
: +B line
: Main signal line
: –B line
: AM signal line
: AM OSC signal line
: FM/AM signal line
: FM signal line
: FM OSC signal line
• Signal line
Schematic Diagram
(All schematic diagrams may be modified at any time with the development of new technology)
Note :
• S946 : Power switch
• S947 : Phono select switch
• S948 : Muting switch
• S950 : FM Auto/ Mono switch
• S951 : Band select switch
• S952 : Tuning decrease switch
• S953 : Tuning increase switch
• S955 : Memory manual/auto switch
• S956 : Preset decrease switch
• S957 : Preset increase switch
• S960 : Tuner select switch
• S961 : CD select switch
• S962 : Tape select switch
• S963 : TV/DVD select switch
• S964 : VCR select switch
• S970 : Search switch
• S971 : EON switch
• S972 : PTY up switch
• S973 : PTY down switch
• S974 : Display mode switch
• S980 : Speaker switch
• S983 : Dolby Pro Logic/SFC off on switch
• S984 : Dolby Pro Logic mode select switch
• S985 : Center mode select switch
• VR501-1 ~ VR501-4 : Volume control
• VR502 : Balance control
• VR511-1 ~ VR511-2 : Bass control
• VR512-1 ~ VR512-2 : Treble control
•Importance safety notice:
Components identified by 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 !
IC, LSI and VLSI are sensitive to static electricity.
Secondary trouble can be prevented by taking care during repair.
•Cover the 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.
•Put a conductive mat on the work table.
•The voltage value and waveforms are the reference voltage of this unit measured by DC electronic voltmeter (high impedance) and oscillo-
scope on the basis of chassis.
Accordingly, there may arise some error in voltage values and waveforms depending upon the internal impedance of the tester or the
measuring unit.
( ) ..... AM < > ..... FM
1N5402BM21
SB360L6508
Ca
A
Cathode
Anode
Anode
Cathode
Ca
A
LN846RPH