DP
DG
DI
DK
DM
DO
DH
DJ
DL
DN
E5
E2
(1/4)
IC21
IC21
(2/4)
IC21
(3/4)
IC21
(4/4)
CN23
CN24
CN29
D39
Q453
INPUT ATT
DIRECT(R)
DIRECT(L)
5.6V AVR
-5.6V AVR
D91
D90
D77
Q454
D48 D49
Q451
D58
D75
D74
D59
D60
D88
D81
D82
D85
D83
D84
Q83
Q81
Q84
Q82
IC81
(1/2)
(2/2)
IC81
Q85
D87
D86
D89
Q86
E7
-10V
10V AVR
9V AVR
WH1
AVR
D999
16V AVR
O
P
B
M
N
BUFFER
POWER LIMITER
POWER LIMITER
P2
Q999
D998
D997
WH6
WH5
Q458
D5
D6
D4
D79
D3
Q464
Q465
Q463
Q466
Q461
D53
D54
D51
D50
D52
Q462
VDD
28
26
27
25
L
R
VSS
1
3
2
4
4
6
5
5.1K
R216
5.1K
R215
2
3
1
VST
CLK
F
AN-H/L
D
ATA
MUTE
F
AN-ON
SELST2
CLK
D
ATA
VST
D-GND
VOL
DA
T
A
SELST1
VOLST
VOL
CLK
T
ON ST
+5.6V
ROOM-B
FL-F2
FL-F1
V
-MUTE
GND
T
O
AD Lch
GND
T
O
AD Rch
TUNER Lch
GND
TUNER Rch
GND
-17V
+17V
+8V
AUX
D-GND
8
9
6
7
5
3
4
1
2
13
15
14
12
10
11
13
12
11
10
7
9
8
6
4
5
2
3
1
29
28
10
11
9
8
6
7
5
4
2
1
3
12
13
14
C201 330P
C202 330P
470K
470K
3.3K
R211
R212
3.3K
47u25
C209
C210
+
47u25
R202
R201
+
C206
0.01
C205
+
4.7u50
C213
C214 4.7u50
+
470K
470K
R206
R205
C21
1 47P
C212 47P
R213 3.3K
3.3K
R214
13
14
9
8
6
7
5
2
1
GND
IN
OUT
GND
IN
OUT
1
2
3
4
5
6
7
8
9
10
9
8
7
6
5
4
3
2
1
11 12 13 14 15 16
18
17
T
ON-ST
DRch
VOL-ST
VOL-CLK
VOL-DA
T
D
ATA
CLK
SEL-ST1
D-GND
MUTE
GND
DLch
GND
NC
NC
GND
Rch
GND
Lch
SRch
SLch
CEch
GND
+17V
NC
NC
-17V
B-MUTE
GND
Lch IN
GND
Rch IN
GND
Lch OUT
GND
Rch OUT
2
1
4
3
6
5
8
7
9
+10V
10V
+5V
5V
+17V
17V
+8V
9
14
13
6
5
7
8
R478
100
100
R475
R479
10K
22 1/4W
R480
47u25
C458
+
+17V
C815
0.047
0.047
C814
C813
0.01
C812
0.01
+
10u50
C817
+
C816 10u50
1000P
W146
W115
4.7K
R474
C452
4.7u100
+
3.3K
R473
390
47u100
+
+B
C463
470u6.3
+
R490 18K
R483 100K
100K
R486
100K
R485 100K
R484 100K
R487
GND
IN OUT
2
1
C803
1000u35
1000u35
C804
+
+
+
16
4700u
C826 0.01
C822 0.01
F3
C801 0.01
0.01
C802
CN84 CN83
CN86 CN85
0.01
C824
CN82 CN81
6
5
8
7
R824
10
R823
4.7K
R803 100
3.3K
R801
R808
1K
C81
1
10u35
+
3
2
4
1
C806
1000P
330P
C805
R812 10K
R813 10K
R810 15K
R81
1 6.8K
C819 0.01
R809 5.1K
R805
1.8 1/4W
2.7 1/4W
R806
R822
10
R804 100
4.7K
R825
3.3K
R802
C807 0.01
C808 0.01
C810
47u25
+
C809 47u25
+
C825 330u35
+
3.3K
R828
100u
C831
+
+
C823 1000u
+20V
+13V
+31V
+17V
+8V
+17V
+13V
C820 0.01
+
10u50
C818
+B
2.7K
R821
C827 47u16
0.01
C829
+
100u16
C828
+
1
2
3
5
4
7
6
8
9
CN87 CN88
F1
F4
F2
C821
1/4W
35
1/4W
1/4W
1/4W
16
1/4W
1/4W
+17V
+17V
+17V
+17V
+17V
+17V
+17V
+17V
10V
10V
+31V
+31V
+31V
+31V
+31V
+31V
+8V
+8V
+8V
+31V
+31V
+31V
10K
R998
+17V
+17V
+17V
+17V
+31V
5V
+5V
+17V
+17V
+17V
+B
+17V
-17V
+17V
1/4W
Q83
8
16
12
4
20
25
R471
1/4W
C457
IN
A
TT1
A
TT2
+10V
+10V
+10V
Q451,454
Q453,457
R999
10K
1/4W
1/4W
(-3dB)
(-6dB)
17V
17V
17V
17V
17V
17V
17V
17V
17V
17V
17V
10V
17V
10V
17V
17V
17V
17V
20V
20V
2
3
1
250V T1.6AL
250V T1.25AL
250V T1.25AL
250V T1.6AL
B
B
+B
+B
B
BB
B
B
+B
4.7K
R458
4.7K
R482
1/4W
4.7K
R496
22K
R495
100K
R470
27K
R491
47K
R489
4.7K
R476
R457
4.7K
100K
100K
100K
100K
100K
R469
R465
R466
R463
R464
470u6.3
C462
+
18K
R488
IC83
IC82
IC84
(X25-6202-71) (A/7)
16.3V
-16.5V
5.6V
-5.6V
-10.1V
10.2V
16.3V
-16.5V
-30.1V
0V
-53.0V
-53.7V
-54.4V
10.2V
10.9V
21.8V
-10.7V
-10.0V
7.9V
12.7V
16.3V
5.0V
16.9V
23.6V
17.5V
24.2V
2.8V
5.0V
-25.2V
-3.2V
-17.8V
-24.5V
-17.2V
-16.5V
30.1V
24.2V
-25.2V
16.3V
15.4V
0V
14.2V
14.6V
54.4V
0V
KRF-X9992D(K)
PCBSD2,2P(
99.11.1
6:34
PM
y [ W 6