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ECO DPL
L/R SELECT
C/S SELECT
Ri>=20K
Lt/Rt
22K
470R
FIXED DELAY
470n
Note : levels indicated
300mV
for ref. operating level
( Dolby )
+12A
+12M
-CMOS
200nWb/m
400Hz
24mV
Atten
ETF2
150mV
500mV
Atten
4K7
+CD
-6dB track
275mV
CDC3
1kHz
Atten
+9V
+12A
110mV
AM 80% mod,
SOURCE
TUNER
120mV
1kHz
SELECTOR
Atten
FM ∆f=67.5kHz,
1kHz
350mV
AUX
Atten
SOFAC (TEA6321T)
FRONT
+F
RDS
DECODER
-30V
IR EYE
TUNER
CONTROL
CDC
CONTROL
2
I C
DPL
MUTE
CONTROL
TMP87CS71F
2
I C
MUTE
AF2/AF3
HP_SENSE
CONTROL CD STBY
SA
NTC
POWER
PW_DN
AMP_ON
CONTROL
STBY
INC
CDC
CONTROL
SOUND
LED
TAPE
CONTROL
EXPANDER
2
I C1
300mV
2
I C1
C
DECODER
300mV
S
( 0 DEG. )
L/R
LEGEND :
20 msec
300mV
mV
AC SIGNAL LEVEL
SUPPLY VOLTAGES
: MUTE L/R CHANNELS
Vref
15K
22K
1K8
110mV
82K
110mV
1K2
FRONT LEFT
REAR LEFT
LOGIC CONTROL
Volume1
Treble
Volume2
REAR RIGHT
Volume1
Bass
Volume2
2
I C
INCREDIBLE SOUND
+F
2
2
I C DATA
I C CLK
FTD
uP
+F
VOLUME
CONTROL
KEY MATRIX
+F
EEPROM
CDC
DSC
LEDS
LEDS
+F
1u
470R
Ro<=1K
C/S SOFAC
22K
100p
( 180 DEG. )
1u
470R
22K
100p
SIGNAL FLOW (MAIN & CONTROL)
: MUTE CENTER & SURROUND WHEN
PLUG IN HEADPHONE
AF3
+9V
R-CHANNEL
1100mV
12K
+12A
HEADPHONE
AMPLIFIER
3200mV
10K
47R
47R
+
A=19dB
Zi=27K
+5.6V
+5.6V
BC848C
BC848C
+CD
CD
MUTE
MUTE
SUPPLY
CD STBY
-30V
CONTROL
POWER SUPPLY
+5.6V
+B1
+B2
F1
F2
+12A
+12M
+F
-32V
+A L/R
NTC
+12M
+B2
F1
+5V6
+C
F2
POWER AMPLIFIER
ML
MUTE
175mV
+A
CENTER &
SURROUND
ATTN
Ri=56K
MUTING
175mV
CIRCUIT
SURROUND
OUT
500mV
+A C/S
ATTN
Zi=56K
HEADPHONE
32 Ohm
+9V
15mW
+12A
REG.
+12A
SUBWOOFER
OUT
220K
ATTN
500mV
Ro<=2K
BUFFER AMP
HEADPHONE
L-CHANNEL
220K
2600mV
560R
ATTN
Ri=3K
+5.6V
HP SENSE
HP_SENSE
(+5V)
+A
+C
Voltage
Selector
ECO
STD-BY
+C
TRAFO
+C +B2
23W
AN7164
+
12 ohms
-
-
+
CENTER
+C +B2
23W
AN7164
+
2X6 ohms
-
-
+
SURROUND
+A
+C +B1
AN7164
+
-
L/R
-
45W
+
6 ohms
N
L
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