Yamaha A-S3000, Owner'S Manual

Page: 81 / 226

25
De
■
Blockdiagramm
BAL 2
CD
TUNER
LINE1 LINE2
LINE2 OUT
PHONO
INPUT SELECTOR
ATT.UINT1
PRE OUT
MAIN IN
MM//MC
FLOATING BALANCE
SPEAKER DRIVER
MOSFET
L CH
FLOATING POWER SUPPLY
FLOATING BALANCE
POWER AMPLIFIER
VOLUME
BALANCE GAIN SEL
TOROIDAL
TRANSFORMER
INDEPENDENT REGULATED POWER SUPPLY (for AUDIO)
FOR
MC AMP
FOR
MM EQ AMP
FOR
After Vol Amp
FOR
Input Amp
FOR
VOLUME1 (Lch)
SUB TRANSFORMER
(REC)
VOLUME
INPUT
BALANCE
BASS
CPU
CONTROL
PROTECTION
SPEAKER OUT
FRONT PANEL
SP A Lch SP B Lch
BAL 1
ATT.UINT2 ATT.UINT3 ATT.UINT1 ATT.UINT2 ATT.UINT3
LOW IMPEDANCE DRIVE
HEADPHONE AMP.
HEAD PHONE
TRIGGER IN
BUFFER AMP
FLOATING BALANCE
SPEAKER DRIVER
MOSFET
TONE CONTROL
REC OUT BUFFER
POWER RELAY
L CH
L CH R CH
R CH
RELAY
MOTOR VOL
FOR
VOLUME2 (Rch)
METER
IR IN
IR OUT
Standby power
CPU/LOGIC, etc.
METER
PHONES
TRIM
SPEAKERS
OFF/A/B/A+B
METER
OFF/PEAK/VU
IR
REMOTE
PHONO MM/MC
AUDIO MUTE
REAR PANEL
METER UNIT
HOT
(+
)
HOT
(+
)
COLD (-)
Phase change
(normal / inv.)
COLD (-)
UNBALANCE
BALANCE
CONVERTER
BUFFER AMP
MC HEAD AMP
MM EQ AMP
PRE OUT BUFFER
POWER AMP PRE STAGE
HOT
(+
)
COLD (-)
FLAT (DEFEAT)
FLAT (DEFEAT)
TONE CONTROL
METER CIRCUIT
To POWER AMP
R CH
Lo
g
am
p
lifie
r
Peak / VU
DRIVER
A
B
+ – + –
TREBLE
De
ut
s
c
h