Kenwood KRF-X9992D, Service Manual

Page: 18 / 35

CC CE CG CI CK CD CF CH CJ CL
2
1
3
5
7
4
6
220P 220K
R18
R17
R9
R14
R13
220P
C9
220P
1K
C10
220P
1K
1K
220P
1K
C8
C7
C5
C6
220P
220
220
220K
220K
R19
220K
R20
220K
R16
R15
R12
R1
1
220K
R10
R6
R5
R1
R2
220P
C3
1K
220P
1K
C4
220P
220P
220
220
C1
C2
R7
220K
R8
220K
220K
R3
R4
220K
IN
VSS
1
2
4
3
5
VDD
28
27
PLAY
MD/T2
SR
25
26
24
6
7
9
8
10
11
12
OUT
23
22
21
20
CD2/T2
REC
19
18
17
14
STB
13
GND
DATA
CLK
16
15
1 2 3 4 5 6 7 8 9
T
ONE-STB
VOL-STB T
ONE. VOL-SCLK
T
ONE. VOL-DA
T
A
SEL
DA
T
A
SEL
SCLK
SEL
STB
D-GND
+17V
B-MUTE
A-MUTE
20dB ATT
SW-MUTE
VOL IN L
GND
VOL IN R
GND
VOL IN C
S-MUTE
VOL IN SW
GND
VOL IN SL
GND
VOL IN SR
VDD VSS
1
2
3
4
7
5
6
8
9
27
28
25
26
22
23
24
20
21
DATA
GND
10
11
ST
13
12
14 15
18
19
16
17
CLK
28 27
VDD
26 25
R
L
22 24 23
21
20
CONF2
P
ASS
T
ONE
CLK
19 18 16 17 15
D
ATA
VSS
1 2 3 4 7 5 6 8 9 14 10 11
STB
12 13
GND
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
1K
R198 1K R196 1K R197 1K
+17V
17V
+17V
-17V
3
2
4
1
14
13
12
6
5
6
7
3
4
2
8
1
R537
100
100
R538
3.9K
R535 100P C533
R536 3.9K C534 100P
C531
47u16
+
+
C532
47u16
R533
3.9K
3.9K
R534
100K R531
R532 100K
C542 150P
C541 0.01
+17V
+17V
+17V
17V
17V
+17V
R199
5
4
6
8
7
1
3
2
+17V
C511 0.1
C513 0.1
C515 0.033
R509 7.5K
R511
10K
10K
R507
R503 R501
33K 18K
R505
33K
C505 0.1 C503 0.1 C501 0.1
C523
R510 7.5K
C516 0.033
C514 0.1
C512 0.1
R512
10K
C506 0.1 C502 0.1 C504 0.1
R506
33K
33K
R502
18K
R504
R508
10K
0.01
C521
150P
C522
0.01
R346
17V
1
2
4
3
7
6
5
9
9
7
3
5
4
8
1
6
2
14
6
12 13
10u50
C345
+
2.4K
R349
10u50
C349
+
R341
+
C347 10u50
R353 1.2K
3.3u50
C348
+
68K
R350 R342 10K R356 10K R354 68K
R357 4.7K
6.8K
R358
470K 100P
C17
C13 C14
150P 0.01
0.01
C16
150P
100P 470K
1 2 4 3
4
25
C1
1
R21
15
14
13
MD/T1
REC
IN
A ROOM B
OUT
CD2/T2
PLAY
AV AUX T2 PLAY
CD
OUT
OUT
PLAY
PLAY
MD/T1
SL
CD2/T2
CD1
T2 PLAY AV AUX
IN
REC
MD/T1
REC
CD2/T2
IN
DAC
+17V
17V
+17V
+17V
+17V
17V 17V
C510
0.033 0.033
C509
C524 150P
+17V
17V
+17V
17V 17V
+17V
17V
R24 C12
4
7
17V 17V
+17V
17V
17V
+17V
+17V
4
25
IC42
10K
R359
1.1K
R355
0.1u50
C350
+
R542 10
10
R541
+17V
S.D
6
5
8
7
5
12
2.4K
R340
2.4K
R339
2.4K
470K 470K
17V
15 14 13 12
11
10
9 8 7 6 5 4 3 2
1
T
ONE OUT
Rch
GND T
ONE IN Rch
GND T
ONE IN Lch
GND T
ONE OUT
Lch
+B -B B-MUTE DGND VOL-STB T
ONE-STB
CLK D
ATA
8
R SR
SL
L
17V
+17V
C326
C325 0.01
150P
100P
C339 470K
R26 R25
470K
R347
470K
R348
IC42
IC2 IC1
(X11-3822-71) (A/7)
H
A
CONTROL UNIT
16.3V
-16.5V
16.3V
-16.5V
2.5V
OFF:-15.9V
ON:15.4V
OFF:-15.9V
ON:15.4V
OFF:-15.9V
ON:15.4V
OFF:15.5V
ON:14.2V ON:14.2V OFF:15.5V ON:14.2V OFF:15.5V
ON:14.2V OFF:15.5V
OFF:4.9V
ON:1.8V ON:1.8V
OFF:4.9V
ON:1.8V
OFF:4.9V
ON:1.8V
OFF:4.9V
OFF:-15.9V
ON:15.4V
16.3V -16.5V
-16.5V 16.3V
REC OUT
PLAY IN
MD/TAPE1
Lch 6
Rch 5
Lch 4
Rch 3
Lch 2
J1
Rch 1
Lch 4
Rch 3
Lch 2
Rch 1
J2
E1
E2 CN3
REC OUT
CD2/TAPE2
CD1
Rch
IC48
(2/2)
IC48
(1/2)
IC47
(2/2)
IC47
(1/2)
LOW
Lch
DRIVE
A-MUTE
Q15 Q23
Q21
Q19
Q16 Q24 Q22 Q20
IC49
(2/2)
IC49
(1/2)
BUFFER
Rch Lch INPUT SEL. INPUT SEL.
S-MUTE
DRIVE SW-MUTE
DRIVE
DRIVE
-20dB ATT
PLAY IN
(DIRECT DAC
SELECTOR
LOW BOOST)
(BYPASS TONE)
BOOST(R)
LOW
BOOST(L)
O
-E3
X11-B/7
2/6
1/6
-CN5
X11-C/7
D13
WH1
WH2
KRF-X9992D(K) PCBSD2,2P( 99.11.1 6:35 PM y [ W 10