Panasonic SA-AK230GCP, Service Manual

Page: 59 / 105

(All schematic diagrams may be modified at any time with the
development of the new technology)
Note:
SW1 : Push switch
SW2 : Push switch
SW3 : Open switch
SW4 : CD switch
SW5 : Load switch
S951 : Mode switch
S952 : Half switch
S971 : Mode switch
S972 : Half switch
S975 : Recinh_F switch
S5950 : Voltage Selector switch
S6101 : Open/ Close switch
S6102 : CD 1 switch
S6103 : CD 2 switch
S6104 : CD 3 switch
S6105 : CD 4 switch
S6106 : CD 5 switch
S6201 : Rew/Down switch
S6202 : Tuner switch
S6203 : CD switch
S6204 : FF/Up switch
S6205 : Stop switch
S6206 : Deck 1/2 switch
S6207 : Deck 2 switch
S6208 : TAPE switch
S6209 : AUX switch
S6210 : Deck 1 switch
S6301 : Power switch
S6303 : SSEQ switch
S6304 : REC switch
S6305 : Demo/Displa y switch
S7201 : Rest switch
VR6491 : VR Volume Jog
· The 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 waveformsde pending upon the internal impedance of
the tester or the measuring unit.
· Importance safety notice :
Components identified by mark have special
characteristic s 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.
·
Put a conductive mat on the work table.
· Ground the soldering iron.
·
Do not touch the pins of IC, LSI or VLSI with fingers directly.
17 Schematic Diagram
59
SA-AK23 0GCP