Panasonic SA-VK825DEE, Service Manual

Page: 79 / 149

(All schematic diagrams may be modified at any time with the
development of the new technology)
Note:
S1 : Stock Switch
S2 : Play Switch
S3 : Bottom Switch
S4 : Open Switch
S5 : Change Switch
S951 : Mode Switch
S952 : Half Switch
S971 : Mode Switch
S972 : Half Switch
S974 : Recinh_R Switch
S975 : Recinh_F Switch
S6800 : DVD/CD Switch
S6801 : Tape Switch
S6802 : Tuner/Band Switch
S6803 : AUX Switch
S6804 : Deck 1 Switch
S6805 : Display/Demo Switch
S6806 : Deck 2 Switch
S6807 : Rew Switch
S6808 : FF Switch
S6809 : Stop Switch
S6810 : AC In Switch
S6811 : Disc Check Switch
S6812 : Multi Re-Master Switch
S6813 : Super Surround Switch
S6814 : Mic Up Switch
S6815 : Mic Down Switch
S6816 : Deck 1/2 Switch
S6817 : Rec Switch
S6818 : Sound EQ Switch
S6819 : Open/Close Switch
S6820 : Disc Change Switch
S6821 : Disc 5 Switch
S6822 : Disc 4 Switch
S6823 : Disc 3 Switch
S6824 : Disc 2 Switch
S6825 : Disc 1 Switch
S6826 : Super Sound EQ Switch
S6827 : Subwoofer Switch
VR6800 : 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 waveforms depending upon the internal impedance of
the tester or the measuring unit.
· 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.
· 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.
20 Schematic Diagram
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SA-VK825DEE