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SA-F21
2-2. AUDIO/CONTROL BLOCK DIAGRAM
MAIN BOARD
(SEE PAGE 3-7)
VOLUME,
IC107
LINE AMP
CONTROL
PJ101
L
3
1
31
IN2
INPUT
R
5
7
2
IN1
IC105 (1/2)
MIX AMP
IC103
+
2
MIX AMP
+
2
1
6
7
05
IC601
HEADPHONE AMP
3
5
Q602
Q601
MUTE
MUTE
IC101
IC102
IC109
TONE
HPF
AMP
OUT2
24
3
1
2
OUT1
9
5
7
6
Q605
MUTE
DRIVE
D809
Q806
POWER
POWER ON
(SEE PAGE 2-5)
MUTING
MUTE
14
CLK
20
DATA
19
LATCH
18
IC104
SOUND
CONTROL
SI
20
IC105 (2/2)
HPF
SCK
19
1
4
IN
OUT
21
5
7
2-3
JACK BOARD
(SEE PAGE 3-8)
CN101
HP L
1
1
1
GND
2
2
HP R
7
3
3
B+
MUTE
4
4
Q604
Q603
MUTE
5
5
MUTE
MUTE
POWER BOARD
(SEE PAGE 3-15)
CN103
L CH
1
1
1
R CH
7
3
3
SW
4
4
MUTE/STBY
5
5
CN808
2
2
Q805, 807
RELAY
CONTROL
1
1
Q101, 102
MUTE
DRIVE
CN102
VOL CLK
1
10
VOL DATA
2
9
VOL CE
3
8
SW DATA
4
7
SW CLK
8
3
IC106
AUTO POWER
LIMITER AMP,
DETECT
LPF
9
2
2
1
STANDBY
POWER
5
7
10
1
(SEE PAGE 2-5)
CN601
J601
HEADPHONES
IC301
CN301
POWER AMP
1
1
CN303
6
INL
OUTL
3
2
2
3
3
8
RIN
OUTR
1
4
4
5
5
4
M/S
IC401
POWER AMP
CN304
6
IN1
OUT1
3
1
2
8
RI2
OUT2
1
3
RY401
4
4
M/S
CN305
Q301, 303, 305
RELAY
CONTROL
IC504
IC501
RESET SIGNAL
SYSTEM CONTROL
GENERATOR
3
5
RESET
CN502
36
VOL_CLK
RIMOKON
25
34
VOL_DATA
35
VOL_CE
37
SW_DATA
38
SW_LATCH
39
SW_CLK
MAIN_SW
4
IC502
AUTO POWER DETECT
KEY1
13
OUTPUT 1
6
22
AUTO SW
KEY2
14
1
INPUT
OUTPUT 2
7
Q501
LED_MIN
47
RELAY
3
LED OPR
CONTROL
LED_LEVEL1
46
Q503
LED
LED_LEVEL2
45
DRIVE
Q504
LED_LEVEL3
44
LED
2
LED STBY
DRIVE
D502
LED_MAX
43
I/1
Q505
LED_TREBLE
33
LED
28
MOVIE
DRIVE
LED_BASS
32
Q506
LED
30
MUSIC
LED_VOL
31
DRIVE
D503
CF1
10
SW VOL
CF2
11
2-4
SPEAKER TERMINAL BOARD
(SEE PAGE 3-16)
TH305
SS-MS21
CN305
+
L
RY301
L-CH
–
SPEAKER
–
IMP 4Ω
R-CH
R
+
SP101
SUB WOOFER
CONTROL BOARD
(SEE PAGE 3-11)
IC503
REMOTE COMMANDER
RECEIVER
1
OUT
+5V
S501
I/1
S502
MODE
S503
+
+5V
D504
MIN
LEVEL
S504
D505
–
1
D506
2
D507
3
D508
MAX
D509
TREBLE
D510
BASS
D511
MASTER VOL
IC501 q;
X501
6MHz
4.24 Vp-p
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