Schematic Diagram - Panasonic SA-HT743P Service Manual

18 Schematic Diagram

· This schematic diagram may be modified at any time with the development of new technology.
Notes:
S6801: Play and memory switch (
S6802: R. skip, search and Tuning switch (
S6803: F. skip, search and Tuning switch (
S6804: Stop and TUNE mode switch (
Pause and FM mode switch (
S6808: Tray open / close switch (
S6806: Disc skip switch (DISC SKIP).
S6805: Disc exchange switch (DISC EXCHANGE).
S6900: Standby / on switch (POWER
S6907: Source select switch (SELECTOR).
S6902-S6906: Disc switch (DISC1-DISC5).
S6901: CD mode switch [PARTY MODE].
VR6800: Volume control.
· 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.
· Important 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.
· The supply part number is described alone in the replacement parts list.
· Voltage and signal line
: +B Signal line
: CD-DA signal line
: Main signal line
: DVD (Video) signal line
: DVD (Audio) signal line
: FM/AM signal line
: -B Signal line
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.
Memory).
/ / TUNING ).
/ / TUNING ).
TUNE MODE). /
FM MODE).
Open / Close).
).
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SA-HT740P / SA-HT740PC