CM
CN
CP
CR
CT
CV
CO
CQ
CS
CU
20
VDD
VSS
14
17
IN
OUT
19
LD1
18
A-GND
LD2
16
NC
15
NC
CS2
13
CS1
D
ATA
STB
12
CLK
GND
11
1
7
4
2
3
5
6
8
9
10
3
2
4
1
560P
C116
220K
R122
560P
C115
220K
R121
8.2K
R129
R127
R126 470K
470K
C119
6
5
8
7
R125
470K
C108 0.01
C107 150P
C106 0.1
C105 0.1
C127 0.1
C128 0.1
2.2u50
C131
+
R133 1M
R134 1M
+
2.2u50
C132
R123 100K
100K
R124
82P
82P
C133
C134
R182 120K
120K
R183
R184 120K
R
111
240
R1
12
240
R113
4.7K
4.7K
R114
5
8
7
2.7K
6
2.7K
3
2
1
4
47u35
C135
+
+
C136
47u35
2.2K
R109
2.2K
R110
C103
2.2u50
+
+
2.2u50
C104
C121 220P
C122 220P
R102 120K
R101 120K
+
4.7u100
C112
100P
C124
C123 100P
R105 13K
C125
100P
100P
C126
C109
22P
R131
100
22P
C110
100
R132
R106 13K
R107 220K
220K
R108
2.2K
R116
1K
R118
1K
R117
17V
+17V
17V
+17V
+
10u50
C117
+
C118
10u50
17V
+17V
R174 470K
R175
470K
C163 100P
9
D
ATA
10
STB
A-GND
12
CS2
11
14
NC
13
15
OUT
IN
VDD
16
8
CLK
7
GND
5
6
CS1
R173
470K
3
4
NC
2
1
VSS
+
C171
10u50
100K
R171
C137
+17V
+17V
82P
+
2.2u50
C138
R180
1M
C140
5
6
8
+
7
R186
82P
C156 0.01
C155 150P
R179
1M
C139
2.2u50
+
R185
3
2
4
+
1
47u35
2.2K
R160
C142
240
R162
2.2u50
+
C154
R188 120K
4.7K
R164
C166 220P
R152 120K
C168 100P
R178
C158
22P
100
R156 13K
2.7K
120K
R187
4.7K
R163
C165 220P
240
R161
47u35
C141
2.2K
R159
C153
2.2u50
+
C167 100P
R151 120K
2.7K
C157
22P
R177
100
R155 13K
+17V
R168
1K
+
4.7u50
C160
2.2K
R166
220K
R158
100P
C170
R167
1K
100P
C169
220K
R157
+
C159
4.7u50
2.2K
R165
17V
17V
17V
+
10u50
C172
R172 100K
+
470K
C213 100P
470K
R224
R225
100K
R222
10u50
C212
470K
10
7
98
14
12
11
13
15
16
3
4
6
5
1
2
R223
+
C211
10u50
100K
R221
R218
100
22P
R214
2.2u50
+17V
+
C144
+
2.2K
+17V
+
C148
47u35
240
R212
R210
R192 120K
C204
2.2u50
4.7K
C216 0.056
R202 120K
R206 18K
1K
+
+17V
4.7u50
C210
220K
R208
2.2K
R216
82P
82P
C206 0.01
R230
1M
C146
C205 150P
R229
1M
C145
R190 120K
R189 120K
17V
+
2.2u50
C143
+
4.7K
120K
R191
240
R21
1
C215 220P
R213
2.7K
100P
C217
C218 100P
2.2K
C208 R228
R201 120K
R227
C207
22P
100
R205 13K
17V
47u35
2.2K
C147
R209
2.2u50
+
C203
R217
1K
100P
C219
100P
C220
220K
R207
17V
C209
4.7u50
2.2K
R215
10
9
8
7
6
5
4
3
2
1
11
15
12 13 14
16 17
+17V
+17V
+17V
17V
17V
17V
17V
+17V
+17V
17V
17V
1
2
3
4
5
6
7
8
9
10
14
15
12
13
11
AUX Rch
AUX Lch
TAPE2 MONITOR Lch
TAPE2 MONITOR Rch
ROOM A SEL Lch
ROOM A SEL Rch
ROOM B SEL Rch
ROOM B SEL Lch
VIDEO1 REC Lch
VIDEO1 REC Rch
VIDEO2 REC Rch
VIDEO2 REC Lch
GND
-17V
+17V
4
17V
+17V
NC
NC
+17V
GND
VOL
OUT
C
VOL
OUT
SL
VOL
OUT
SR
VOL
OUT
L
GND
VOL
OUT
R
GND
NC
NC
GND
DIRECT
Lch
GND
DIRECT
Rch
5
6
7
3
2
8
1
7
4
6
5
C18 150P
R35 220K
R36 220K
C23 47P
C24 47P
100P
C27
C28 100P
+
C25
47u25
47u25
+
C26
R28
100
100
R27
+17V
17V
17V
2
1
3
4
4.7u50
C22
+
+
C21
4.7u50
13
15
14
+17V
0.01
C371
100P
8.2K
R128
C111
+
4.7u100
2.2K
R115
A-GND
IN
OUT
CS2
STB
D
ATA
VDD
NC
CS1
GND
CLK
VSS
NC
120K
120K
2
3
4
1
5
8
6
7
+
2
3
4
1
2
1
4
3
5
8
6
7
8
7
6
5
5
6
12
5
+17V
R402 100
R401 100
R181 120K
R405 100
R406 100
R412 10K
R409 100
R410 10K
C15 0.01
R138 2.2K
R137 2.2K
R139 2.2K
R135 2.2K
R136 2.2K
R104
R103
R154
R153
R203
R204
17V
+17V
+17V
ANALOG INPUT
2
SW1
2ch
LOW BOOST ON
STREO & Fch LARGE
DIGITAL
LOW BOOST ON
LOW BOOST OFF
TONE ON
STEREO EXCEPT
STEREO
TONE OFF
SPEAKER B ON
SPEAKER B OFF
6ch
TONE ON
TEST
NORMAL
BASS PEAK
BASS PEAK LEVEL SWch
, 27
3
26
,
SW2
4
25
,
SW3
6
23
,
SW4
8
21
,
SW6
10 19
,
SW7
11 18
,
SW8
ANALOG INPUT
LEVEL NON SWch
LOW BOOST OFF
IC42
( :SW ON)
IC21
IC23
IC25
(X11-3822-71) (A/7)
-16.4V
16.4V
OFF:-15.8V
ON:0.7V
OFF:-15.8V
ON:0.7V
OFF:-15.8V
ON:0.7V
ON:0.7V
OFF:-15.8V
OFF:-15.8V
ON:0.7V
ON:0.7V
OFF:-15.8V
16.4V
-16.4V
16.3V
16.3V
-16.4V
16.4V
OFF:-15.8V
ON:0.7V
OFF:-15.8V
ON:0.7V
OFF:-15.8V
ON:0.7V
OFF:-15.8V
ON:0.7V
POWER
ON:16.3V
BY:0V
STAND
STAND BY:0V
POWER ON:-16.5V
POWER ON:16.3V
STAND BY:0V
POWER ON:16.3V
STAND BY:0V
POWER ON:-16.5V
STAND BY:0V
POWER ON:-16.5V
STAND BY:0V
POWER ON:-16.5V
STAND BY:0V
POWER ON:16.3V
POWER ON:-16.5V
STAND BY:0V
STAND BY:0V
POWER ON:-16.5V
STAND BY:0V
POWER ON:16.3V
STAND BY:0V
POWER ON:16.3V
STAND BY:0V
POWER ON:16.3V
STAND BY:0V
POWER ON:16.3V
POWER ON:-16.5V
STAND BY:0V
STAND BY:0V
)
(
)
(
E-VOL.
Lch
Rch
D2
MUTE
-20dB
ATT
IC22
(2/2)
(1/2)
IC22
Q1
Q2
Q3
Q4
IC51
(2/2)
IC51
(1/2)
E-VOL.
IC24
(1/2)
(2/2)
IC52
Q6
-20dB
ATT
Q5
(2/2)
MUTE
IC24
Q8
Q7
(1/2)
SLch
IC52
E-VOL.
SWch
Cch
-20dB
ATT
MUTE
CN4
CN1
(1/2)
IC3
IC3
(2/2)
REC OUT
BUFF
SRch
AMP
AMP
(1/2)
IC53
(1/2)
IC26
Q9
Q11
AMP
Q10
Q12
IC53
(2/2)
IC26
(2/2)
LOUDNESS
D14
P
GND LINE
SIGNAL LINE
B LINE
B LINE
B
+B
The DC voltage is an actual reading measured with a high impedance type volt-
meter with no signal input. The measurement value may vary depending on the
measuring instruments used or on the product.
CAUTION: For continued safety, replace safety critical components only with manufacturer's rec-
ommended parts (refer to parts list).
indicates safety critical components. For continued protec-
tion against risk of fire, replace only with same type and rating fuse(s). To reduce the risk of electric
shock, leakage-current or resistance measurements shall be carried out (exposed parts are accept-
ably insulated from the supply circuit) before the appliance is returned to the customer.
KRF-X9992D(K)
PCBSD2,2P(
99.11.1
6:34
PM
y [ W 7
