Technics SA-CH750

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TRANSFORMER
POWER
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AC IN
230V--(E,EG)
230- 240V--- (EB,GN)
50 /60Hz
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SA-CH750
Notes:
S601 : Power “STANDBY (/ON” switch (POWER/STANDBY ()/ON)
eS602 : Timer recording switch (REC TIMER)
©S603 : Timer play switch (PLAY TIMER)
©S604 : Clock/timer switch (CLOCK/TIMER)
eS605 : Timer select switch (¥)
eS606 : Timer select switch (A)
©S607 : Setting switch (SET)
eS608 : Preset memory switch (MEMORY, -MANUAL, —AUTO)
eS609 : Preset tuning switch (¥)
eS610 : Preset tuning switch (A)
S611 : Band select/allocation charge switch (-BAND —ALLOCATION)
@S612 : Tuning switch (¥)
eS613 : Tuning switch (A)
eS614 : Input selector switch (TUNER)
eS615 : Input selector switch (CD)
eS616 : Input selector switch (TAPE)
eS617 : Input selector switch (PHONO)
eS618 : Input selector switch (DAT)
eS619 : Input selector switch (VDP)
eS620 : Input selector switch (VCR)
S701 ~ : VOLTAGE SELECTOR switch in “220 V” position (110 V/127 V/220 V/240 V) for (GC) area only
Indicated voltage values are the 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 the internal impedance of the DC circuit tester.
No mark: FM mode ( ): MW mode < >: LW mode
e|mportant safety notice:
Components identified by A 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 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 aluminum foil.
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.
The supply part number is described alone in the replacement parts list.
Production Parts No. Supply Parts No.
IC202 M5219FPTA M5219FP
1C203
16351 BA4558FT1 SVIBA4558F
1C301 M5218AL M5218L
IC602 RCDHC-278-E RCDHC-278
eThis schematic diagram may be modified at any time with the development of new technology.
AF signal line
Power Source For (GC) area.
POWER POWER AC IN
TRANSFORMER (eh TRANSFORMER TERMINAL
(B) CIRCUIT (A) CIRCUIT 31098 ; CIRCUIT
As7oi
(VOLTAGE ADy.)
A
AC IN
AF 702
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127/220/240V
50/60Hz
: Positive voltage line
=—=—=--= :; Negative voltage line
: Surround SP. drive signal
line