Roland KC-550 - Page 25

31
Aug.2005 KC-550 KC-350
30
KC-550 CIRCUIT DIAGRAM (3/4) fig.kc550sch3
JACK BOARD (OUTPUT)
"PS1 BOARD (LINK Sect.)"
-5.5dBu / 410mV
W4
PRE BOARD
STEREO LINK IN
STEREO LINK OUT
-9.0dBu / 275mV
@47kohms
MUTE TR
AUX IN R
MUTE TR
LOUT-R
AUX IN L
MUTE TR
MAIN L
MAIN R
MUTE TR MUTE TR MUTE TR
MUTE TR
LOUT-L
SUB_OUT
A A
A
A
-15
-15 -15
+
15
A
A
+
15
A
A
A A
A
+
15
-15
+
15
-15
-15
-15A
A
+
15
A
A
A
-15
A
A
+
15
+
15
+
15
+
15
-15
+
15
-15
A
A
A
A
A
A
AA AA
AAA
AA
A
A AAA
A A
A
A
A
A
A AA
A
A
A
A
-15
+
15
A
-15
+
15
A
-15 +
15
A
R179 1.5k R175 1.5k
JK10
YKB21-5012 JK11 YKB21-5012
R155
100
R162 100 R164 100
G
JK13
YKF52-5003
C122
C-0.1
C119
C-0.1
C100 E-47/50
C114 C-220P
R171 100
C105 E-47/50 C108 E-47/50 C113
E-47/50
C120 E-47/50
R177 22k
R161 22k
C121 C-220P
C106 C-220P
R154 22k
R173 22k
R181 22k
R166 22k
SSW1A
SSSU12584A
SSW1B
SSSU12584A
C281 NIU
C282 NIU
G
JK12
YKF52-5003
C288 C-0.1
Q23 2SC2878A
R183 220
R159 220 R152 220
D32
1SS133
Q39 2SC2878A
D56 NIU
+ -
IC8A
M5218AL
2 3
1
R186 10k
R187 8.2k
R196 6.8k
R168 10k
D41
1SS133
C116
C-0.1
D38 1SS133
+ -
IC9A
M5218AL
2 3
1
R182 8.2k
R160 6.8k
C111 C-47p
D36
1SS133
R189 10k
D33
1SS133
D44 NIU
R180 6.8k
R169
10k
R156 12k
Q22 2SC2878A
R157 10k
R172 6.8k
CN3
B7B-PH-K
1 2 3 4 5 6 7
C109 C-100p
D34 1SS133
R176
6.8k
+ -
IC7B
M5218AL
6 5
7
R165 6.8k
D57 NIU
R167 12k
D58 NIU
CN2
B7B-PH-K
1 2 3 4 5 6 7
+ -
IC8B
M5218AL
6 5
7
D42
1SS133
D47 NIU
D40
1SS133
D37
1SS133
C127 C-220p
C101 C-100p
Q25 2SC2878A
R178 220 R174 220
Q26
2SC2878A
Q24 2SC2878A
D43 1SS133
C123 C-220p
D39 1SS133
D35 1SS133
R170 220
D46 NIU
Q27 2SC2878A
D45
NIU
C99 C-0.1
+
-
IC9B M5218AL
6
5
7
C129 JW
R163 220 R153 6.8k
C102 C-47p
D55 NIU
+ -
IC7A
M5218AL
2 3
1
R158
10k
R192
22k
AB
JK14C
R194 22k
R191
100
R193
100
C134 E-10/16 C136
E-10/16
R188 100
C128 E-10/16
C131
C-0.1 C195 C-0.1
JK15 YKB21-5012
R190 22k
R356 100
C130
C-220P
C140 C-220P
JK14B YKC21-3503
C138 C-0.1
R357 22k
C135 C-220p
C137 C-220p
JK14A YKC21-3503
C236 C-0.1
JK17 YKB21-5012
JK16 YKB21-5012
R184 100
C124 E-10/16
C126 C-0.1
C125 C-220P
R185 22k
C139 E-47/50
WP24
1 2 3 4
5 6 7
C115 C-0.1
C117 E-47/50
C107 C-0.1
C110 C-220P
C118 C-220P
C103
C-220P
C259 C-0.1 C258 C-0.1
WP22
W2
1 2
3 4 5 6 7
+ -
IC7C M5218AL
84
+ -
IC8C M5218AL
84
+ -
IC9C M5218AL
84
C212 C-0.1
C213
C-0.1
C205
C-0.1 C211 C-0.1
C218
C-0.1
C219 C-0.1
-5.5dBu / 410mV
-9.0dBu / 275mV
SUBWOOFER OUT
+1.5dBu / 920mV
@47kohms
AUX IN R
-19.5dBu / 82.0mV
1kHz sine wave
AUX IN L
-19.5dBu / 82.0mV
1kHz sine wave
LINE OUT XLR L
-6.0dBu / 390mV
@680ohms
LINE OUT XLR R
-6.0dBu / 390mV
@680ohms
LINE OUT L(MONO)
-5.5dBu / 410mV
@47kohms
LINE OUT R
-5.5dBu / 410mV
@47kohms