Roland KC-600 Operating and maintenance manual

SERVICE NOTES
Issued by RJA
Copyright © 2018 Roland Corporation
All rights reserved. No part of this publication may be reproduced in any form without the written permission
of Roland Corporation.
CC-KWS17057150E0
Jan. 2018 KC-600
Table of Contents
Cautionary Notes ..............................................................2
Specifications .....................................................................3
Location of Controls .........................................................4
Location of Controls .........................................................5
Exploded View ..................................................................6
Exploded View Parts List.................................................7
Plain View ..........................................................................8
Plain View Parts List.........................................................9
Exploded View (Fig.A)...................................................10
Exploded View (Fig.A) Parts List .................................11
Plain View (Fig.A)...........................................................12
Plain View (Fig.A) Parts List .........................................13
Exploded View (Fig.B)....................................................14
Plain View (Fig.B)............................................................15
Disassembly Procedure..................................................15
Important Notes When Bundling the Wiring .............15
Wiring Diagram/Block Diagram..................................16
Wiring List........................................................................18
Parts List ...........................................................................20
Input Output Test............................................................22
Circuit Board (Jack, Pre, PS1, Rotary SW Board)........24
Circuit Diagram (Jack Board) ........................................26
Circuit Diagram (Pre Board: 1/4) .................................28
Circuit Diagram (Pre Board: 2/4) .................................30
Circuit Diagram (Pre Board: 3/4) .................................32
Circuit Diagram (Pre Board: 4/4) .................................34
Circuit Diagram (PS1 Board) .........................................36
Circuit Diagram (Rotary SW Board) ............................38
Circuit Board (IF Board).................................................39
Circuit Diagram (IF Board)............................................40

2
Jan. 2018 KC-600
Cautionary Notes
Before beginning the procedure, please read
through this document. The matters described may
differ according to the model.
No User Data
This product cannot save user data. Backing up user data during servicing is
not required.
Part Replacement
When replacing components near the power-supply circuit or a heat-
generating circuit (such as a circuit provided with a heat sink or including a
cement resistor), carry out the procedure according to the instructions with
respect to the part number, direction, and attachment position (mounting so as
to leave an air gap between the component and the circuit board, etc.).
Parts List
A component whose part code is ******** will not be supplied as a service part
because one of the following reasons applies.
• Because it is supplied as an assembled part (under a different part code).
• Because a number of circuit boards are grouped together and supplied as
a single circuit board (under a different part code).
• Because supply is prohibited due to copyright restrictions.
• Because reissuance is restricted.
• Because the part is made to order (at current market price).
• Because it is carried in electronic data on the Roland web site.
• Because it is a package or an accessory irrelevant to the function
maintenance of the main body.
• Because it can be replaced with an article on the market. (battery or etc.)
Circuit Diagram
In the circuit diagram, “NIU” is an abbreviation for “Not in Use,” and
“UnPop” is an abbreviation for “Unpopulated.” They both mean non-mounted
components. The circuit board and circuit board diagram show silk-screened
indications, but no components are mounted.
There are cases that the circuit diagrams are omitted. This omission will
happen to the highly integrated digital circuit boards (e.g. Main Board etc) that
are virtually impossible to repair nor analyze.
Roland Japan Warranty
Please send the problem report with followings when the defect occurred
within one year from production and within one month from the first
customer’s purchase.
• Model name:
• Serial number:
•Version:
• Purchase date by the first customer: yyyy/mm/dd
•Symptom:
• Frequency: always, sometimes or seldom
• Confirmed the symptom at your service dept: Yes/No
Please send the problem report to [email protected].

3
Jan. 2018 KC-600
Specifications
Roland KC-600: STEREO MIXING KEYBOARD AMPLIFIER
Rated Power Output
200 W
Nominal Input Level (1 kHz)
CH1 (BALANCED, L/MONO, R): -50-- -20 dBu
CH2 (L/MONO, R): -20 dBu
CH3 (L/MONO, R): -20 dBu
CH4/MONITOR IN (L/MONO, R): -20 dBu
AUX IN (L, R, STEREO): -10 dBu
STEREO LINK (IN): 0 dBu
Nominal Output Level (1 kHz)
LINE OUT (L/MONO, R): +4 dBu
LINE OUT (BALANCED L, R): +4 dBu
STEREO LINK (OUT): 0 dBu
SUB OUT: +4 dBu
Speakers
Full Range: 38 cm (15 inches) x 1
Horn Tweeter: x 1
Controls
SHAPE button
POWER switch
GND LIFT switch
[CH1]
MIC/LINE knob
[CH2]
LINE knob
[CH3]
LINE knob
[CH4]
LINE knob
OUTPUT SEL knob
[AUX IN]
LEVEL knob
[PHONES]
VOLUME knob
[EQUALIZER]
LOW knob
MIDDLE knob
HIGH knob
MASTER knob
Indicator
Power
Connectors
CH1 (BALANCED) jack: XLR type
CH1 (L/MONO, R) jacks: 1/4-inch phone type
CH2 (L/MONO, R) jacks: 1/4-inch phone type
CH3 (L/MONO, R) jacks: 1/4-inch phone type
CH4/MONITOR IN (L/MONO, R) jacks: 1/4-inch phone type
LINE OUT (L/MONO, R) jacks: 1/4-inch phone type
LINE OUT (BALANCED L, R) jacks: XLR type
AUX IN (L, R) jacks: RCA phono type
AUX IN (STEREO) jacks: Stereo miniature phone type
SUB OUT jack: 1/4-inch phone type
STEREO LINK (IN, OUT) jacks: 1/4-inch phone type
PHONES jack: Stereo 1/4-inch TRS phone type (mono signal output)
Power Consumption
50 W
Dimensions
590 (W) x 445 (D) x 590 (H) mm (including casters)
23-1/4 (W) x 17-9/16 (D) x 23-1/4 (H) inches (including casters)
590 (W) x 445 (D) x 536 (H) mm (excluding casters)
23-1/4 (W) x 17-9/16 (D) x 21-1/8 (H) inches (excluding casters)
Weight
29 kg
63 lbs 15 oz
Accessory
AC Cord (#00894378, #5100029165, #5100012292, #00894389, #00907001,
#5100013842, #03450323, #5100013648)
Owner’s Manual (#5100058175, #5100059204)
Caster (#5100046029) x 4
* 0 dBu = 0.775 Vrms
* Printed matters will not be supplied after the end of the production. Then,
download the electronic file from the Roland web site.
* In the interest of product improvement, the specifications and/or appearance of
this unit are subject to change without prior notice.

4
Jan. 2018 KC-600
Location of Controls
fig.panel.eps
1 2 6 75 8
131012 9
91116
43
14
1015

5
Jan. 2018 KC-600
Location of Controls
No. Part Code Part Name Description Q’ty
1 5100057924 R-KNOB BASE + PLATE 4
5100026268 ROTARY POTENTIOMETER RK14K1220A4P 4
******** NUT attached to VR 4
******** WASHER attached to VR 4
2 5100057924 R-KNOB BASE + PLATE 1
13119218 ROTARY SWITCH SRBM132400 1
******** NUT M7 attached to SW 1
******** WASHER M7 attached to SW 1
3 5100057924 R-KNOB BASE + PLATE 2
01120156 ROTARY POTENTIOMETER RK14K12B0A5B 10KBX2 2
******** NUT attached to VR 2
******** WASHER attached to VR 2
4 5100057924 R-KNOB BASE + PLATE 3
5100026264 ROTARY POTENTIOMETER RK11K1120091 3
******** NUT attached to VR 3
******** WASHER attached to VR 3
5 5100016833 BUTTON 710-11033-02-00 1
01782623 SWITCH SPUP128100 1
6 5100057924 R-KNOB BASE + PLATE 1
5100026263 ROTARY POTENTIOMETER RK11K1120AA4 1
******** NUT attached to VR 1
******** WASHER attached to VR 1
7 5100003360 LED L-934MBD-F01 (153-L-934MBDLF) 1
8 01786012 SEESAW SWITCH JW-M11RKK 1
01786045 SW HOLDER AT-217K 1
5100046598 POWER SW CUSHION 2
9 5100024419 6.5MM JACK PJ-644C-04-EP(610-11020-01-00) 11
5100046593 JACK SPACER 11
******** NUT attached to Jack 11
******** WASHER attached to Jack 11
10 5100031944 6.5MM JACK PJ-644C-EP 3
5100046593 JACK SPACER 3
******** NUT attached to Jack 3
******** WASHER attached to Jack 3
11 5100029984 XLR CONNECTOR CT3-12FB-EP 1
12 5100051443 M1909-C AC INLET 1
13 5100050453 3.5MM JACK HSJ2000-01-010 1
14 5100020312 RCA CONNECTOR HSP-252V3P-04(610-11032-04-00) 1
15 00122123 XLR CONNECTOR YKF52-5003N 2
16 5100026336 SLIDE SWITCH SSSU122500 1

6
Jan. 2018 KC-600
Exploded View
fig.bunkaizu-KC-600.eps
View 2
View 1
View 6
View 5
View 4 View 3
4
5
1
2
67
8
12
13
11
9
16
15
14
10
10 Refer to Fig. B
Refer to Fig. A
3
17

7
Jan. 2018 KC-600
Exploded View Parts List
No. Part Code Part Name Description Q’ty
5100057291 GRILLE ASSY 1
* This unit includes the following parts.
1 5100007646 ROLAND BADGE SLV H38 DHG 1
2 5100057946 FELT 148X30X0.5T 1
3 5100032020 ADHESIVE TAPE NITTO #5000NS W24MM 50M -
4******** GRILLE 1
5 40011689 SPEED NUT M3 F-TYPE 2
17 40122445 ADHESIVE CEMEDINE SUPER-X NO.8008 170G/135ML -
6 5100058064 SPEAKER W1208-093A 1
7 5100058059 SPEAKER TH08-094A 1
5100057293 CABINET ASSY W/O SPEAKER 1
* This unit includes the following parts.
8 40562234 UL LIGHTNING FLASH SEAL CAUTION 1
9******** CABINET 1
10 5100049816 CORNER COVER 8
14 5100041039 FOOT EK1206 4
15 5100046028 CASTER SOCKET 4
11 5100046027 HANDLE HOLDER 2
12 5100046026 HANDLE PLATE 1
13 5100046025 HANDLE 1
16 5100046029 CASTER 4

8
Jan. 2018 KC-600
Plain View
fig.heimenzu-KC-600.eps
f
d
c
a
b
e
ee
f
f
h
eee
he
a
g
e
f
h
h
View 1 View 2
View 3 View 4
View 5 View 6

9
Jan. 2018 KC-600
Plain View Parts List
View 1
View 2
View 3
View 4
View 5
View 6
No. Part Code Part Name Description Q’ty
a 40010667 SCREW 4X16 TRUSS TAPPING A FE BZC 8
b 40230789 SCREW M3X10 OVAL MACHINE BZC 2
No. Part Code Part Name Description Q’ty
c 40010689 SCREW 4X25 TRUSS TAPPING A FE BZC 4
d 40019023 SCREW 4X20 BINDING TAPPING A BZC 8
No. Part Code Part Name Description Q’ty
e 5100033933 SCREW 3.5X16 TRUSS TAPPING A BZC 4
f 5100049804 SCREW M5X35 (D13.5) TRUSS MACHINE BZC 3
No. Part Code Part Name Description Q’ty
e 5100033933 SCREW 3.5X16 TRUSS TAPPING A BZC 4
f 5100049804 SCREW M5X35 (D13.5) TRUSS MACHINE BZC 3
No. Part Code Part Name Description Q’ty
e 5100033933 SCREW 3.5X16 TRUSS TAPPING A BZC 4
f 5100049804 SCREW M5X35 (D13.5) TRUSS MACHINE BZC 3
g 40010489 SCREW M5X30 OVAL FE BZC 4
No. Part Code Part Name Description Q’ty
e 5100033933 SCREW 3.5X16 TRUSS TAPPING A BZC 4
f 5100049804 SCREW M5X35 (D13.5) TRUSS MACHINE BZC 6
h 40010678 SCREW 4X20 TRUSS TAPPING A FE BZC 20

10
Jan. 2018 KC-600
Exploded View (Fig.A)
fig.bunkaizu-A-KC-600.eps
13
10
14
8
12
8
7
1
2
4
3
11
9
6
5
a
b
e
f
e
f
o
d
c
View A2
View A1
View A3

11
Jan. 2018 KC-600
Exploded View (Fig.A) Parts List
No. Part Code Part Name Description Q’ty
1 5100057924 R-KNOB BASE + PLATE 11
2 5100016833 BUTTON 710-11033-02-00 1
3 01786012 SEESAW SWITCH JW-M11RKK 1
4 01786045 SW HOLDER AT-217K 1
5 5100046598 POWER SW CUSHION 2
6 5100051443 AC INLET M1909-C 1
7 5100057820 CHASSIS 1
8 5100046593 JACK SPACER 14
5100057296 MAIN SHEET ASSY 1
* This unit includes the following parts.
9******** JACK BOARD 1
10 ******** PS1 BOARD 1
12 ******** ROTARY SW BOARD 1
13 ******** PRE BOARD 1
11 5100057927 PWB SPACER RBS-12 3
14 40013812 CAUTION SEAL IEC #142 1
a******** NUT attached to VR 10
b******** WASHER attached to VR 10
c******** NUT M7 attached to SW 1
d******** WASHER M7 attached to SW 1
e******** NUT attached to Jack 14
f******** WASHER attached to Jack 14
o 5100050484 HEX NUT M4 W/SPW ZC 1
40011889 EXTERNAL TOOTH WASHER M4 FECM 1

12
Jan. 2018 KC-600
Plain View (Fig.A)
fig.heimenzu-A-KC-600.eps
i
i
kkk
m
o
n
14
View A1
View A2
View A3

13
Jan. 2018 KC-600
Plain View (Fig.A) Parts List
View A1
View A2
View A3
No. Part Code Part Name Description Q’ty
i 40237101 SCREW M3X8 PAN MACHINE W/SW+SMALL PW BZC 2
k 5100032950 SCREW 2.9X9 BINDING TAPTITE B BZC 6
No. Part Code Part Name Description Q’ty
i 40237101 SCREW M3X8 PAN MACHINE W/SW+SMALL PW BZC 2
m 40011156 SCREW 3X8 FLAT TAPTITE B BZC 2
n 40011101 SCREW 3X8 BINDING TAPTITE B BZC 1
No. Part Code Part Name Description Q’ty
14 40013812 CAUTION SEAL IEC #142 1
o 5100050484 HEX NUT M4 W/SPW ZC 1
40011889 EXTERNAL TOOTH WASHER M4 FECM 1

14
Jan. 2018 KC-600
Exploded View (Fig.B)
fig.bunkaizu-B-KC-400-600.eps
1
2
5
6
3
4
4
View B
No. Part Code Part Name Description Q’ty
1 5100057304 IF BOARD ASSY 1
2 5100056488 POWER SUPPLY UNIT 300ASC UNIVERSAL 1
3 12449438 FERRITE-CORE ESD-R-25DB 3
4 40345056 DOUBLE-FACED TAPE #500 W10MM 20M 20P(CM) -
5 5100057928 SUB CHASSIS 1
6 40122612 ACETATE TAPE NITTO #5 BLACK W10MM 30M 20P -

15
Jan. 2018 KC-600
Plain View (Fig.B)
fig.heimenzu-B-KC-400-600.eps
Disassembly Procedure
Detaching the Chassis Assy
1. Remove screws f(x 3) in View 5 at Plain View (p. 8).
2. Remove screws f(x 3) in View 3 and screws f(x 3) in View 4 at Plain View
(p. 8).
3. Slide the Chassis Assy a short distance toward the rear side and
disconnect wirings (x 3).
4. Pull out the Chassis Assy slowly.
Detaching the Speaker
1. Remove screws a(x 8) in View 1 at Plain View (p. 8) and detach the Grill
Assy.
2. Remove screws c(x 4) and d(x 8) in View 2 at Plain View (p. 8).
3. Detach the speakers slowly and disconnect wirings connected to the
speakers.
* When connecting the wirings, refer to the following figure.
fig.bunkai-tejun.eps
Important Notes When
Bundling the Wiring
* When bundling the wiring, give attention to the following points.
fig.wire-clamp-e.eps
p
p
q
q
View B
No. Part Code Part Name Description Q’ty
p 40017934 SCREW M3X6 PAN MACHINE W/SW+PW(L) FE ZC 11
q 40013001 SCREW M4X8 PAN MACHINE W/SW+PW BZC 3
Woofer
Orange
Black
Red
Brown
Tweeter
Cross the left and right
wirings and bundle them.
Do not bundle
this wiring.

16
Jan. 2018 KC-600
Wiring Diagram/Block Diagram
fig.wiring-KC-600.eps@L
CH1
MIC/LINE
BALANCE
HOT
CH1 VOL
CH2 VOL
CH3 VOL
LOW
TONE
CONTR
PHONES
CH4 VOL
COLD
WP2021
CN1
WP2022
WP511
CN13
WP10
CN3
JK2002
JK2001
VR1
VR5
VR2
VR3
VR4
JK2003
VR6
MID
VR7
JK2004
JK2005
JK2006
JK2007
JK2008
JK2009
JK2010
JK2011
JK2012
RSW501
JK2013
SSW2001
CH1
L (MONO)
R
CH2
L (MONO)
R
CH3
L (MONO)
R
CH4
L (MONO)
R
LINE OUT
L (MONO)
R
OUTPUT
SELECT
-15
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE_TR
PHONES L PHONES R MAIN L MAIN R LINE OUT L LINE OUT R
MUTE FET
MUTE TR
+15
+15
-15
L sel
R sel
-15
+15
LINE OUT
BALANCED
L
LINE OUT
BALANCED
R
GND LIFT
JACK BOARD PRE BOARD
ROTARY SW
BOARD
W1
W2
W3

17
Jan. 2018 KC-600
fig.wiring-KC-600.eps@R
AUX IN VOL
MASTER VOL
E
ROL
SHAPE
SHAPE
FILTER
S VOL
CN5CN2CN4CN17
CN13
CN312 CN309 CN306
CN311CN305CN304
P2
5
VR10
VR9
7
HIGH
VR8
PSW1
C1001WP2024WP1023
WP1012
WP1013
CN1004
CN1002
CN1019
PHONES
AUX IN R
AUX IN L
STEREO LINK OUT
STEREO LINK IN
TWEETER
WOOFER
SUB OUT
POWER
INLET
MUTE FET
MUTE TR
+15
-15
+15
-15
+15
-15
+15
-15
MUTE
MUTE
MUTE_TR
MUTE_FET
+15
-15
IF BOARD
PS-AMP Chassis
PS1 BOARD
POWER_AMP/
POWERSUPPLY
300ASC
W4
W21
W12
W17
W18
W15
Orange & Brown
Red & Black
P2
P1P6
W16
W14
W19
W20
JK1002
JK1014
JK1016
AUX IN STEREO
JK1001
JK1019
JK1015
CABINET
FILTER
VPP AC IN
(VOLTAGE FREE)
MUTE
HPF
AUX IN R
AUX IN L
MUTE
MUTE_TR
W10
W10
W8
W11
W9

18
Jan. 2018 KC-600
Wiring List
No. Part Code Part Name Description Q’ty
W1 5100057355 WIRING W1 (2547/1007#28) 1
W2 5100057357 WIRING W2 (1007#28 7X150-PHR-SAN-F) 1
W3 5100057308 WIRING W3 (1007#28 4X50-SAN-SAN-F) 2
W4 5100057309 WIRING W4 (1185/1007#28) 1
W8 5100057345 WIRING W8 (1672#18-WHT/BLK) 1
W9 5100048516 WIRING W17 (1015#18-GRN&YEL) 1
W10 5100057310 WIRING W10 (1672#18-BLK) 2
W11 5100057346 WIRING W11 (1015#22-OR/BN/BK/RD) 1
W12 5100057311 WIRING W12 (1185/1007#28) 1
W14 5100057348 WIRING W14 (1007#18 2X280-NVR-NVR-F) 1
W15 5100057349 WIRING W15 (1015#22 2X150-VHR-VHR-F) 1
W16 5100057350 WIRING W16 (1007#24/2547#28) 1
W17 5100058012 WIRING W17 (1015#18-GRN&YEL) 1
W18 5100058013 WIRING W18 (1185#28/1007#26) 1
W19 5100058014 WIRING W19 (1672#18-WHT/BLK) 1
W20 5100058016 WIRING W20 (1672#18-WHT/BLK) 1
W21 5100058018 WIRING W21 (1007#28 3X110-PHR-PHR-F) 1

19
Jan. 2018 KC-600

20
Jan. 2018 KC-600
Parts List
fig.-part1-e.eps
Note: The parts marked # are new. (initial parts) The description “Q’ty” means a necessary number of the parts per one product.
Due to one or more of the following reasons, parts with parts code ******** cannot be supplied
as service parts.
• Supply is prohibited due to copyright restrictions.
• It is carried in electronic data on the Roland website.
• The part is made to order (at current market price).
• It can be replaced with an article on the market. (battery or etc.)
• It is a package or an accessory irrelevant to the function maintenance of the main body.
• A number of circuit boards are grouped together and supplied as a single circuit board (under a different part code).
• Reissuance is restricted.
• It is supplied as an assembled part
(under a different part code).
Safety Precautions:
The parts marked have
safety-related characteristics. Use
only listed parts for replacement.
CASING
# 5100057293 CABINET ASSY W/O SPEAKER 1
# 5100057291 GRILLE ASSY 1
CHASSIS
# 5100057820 CHASSIS 1
# 5100057928 SUB CHASSIS 1
KNOB, BUTTON
5100057924 R-KNOB BASE + PLATE 11
5100016833 BUTTON 710-11033-02-00 1
SWITCH
13119218 ROTARY SWITCH SRBM132400 1
# 5100026336 SLIDE SWITCH SSSU122500 1
01786012 SEESAW SWITCH JW-M11RKK 1
01782623 SWITCH SPUP128100 1
JACK, EXT TERMINAL
5100050453 3.5MM JACK HSJ2000-01-010 1
5100024419 6.5MM JACK PJ-644C-04-EP(610-11020-01-00) 11
5100031944 6.5MM JACK PJ-644C-EP 3
5100029984 XLR CONNECTOR CT3-12FB-EP 1
00122123 XLR CONNECTOR YKF52-5003N 2
5100020312 RCA CONNECTOR HSP-252V3P-04(610-11032-04-00) 1
POWER SUPPLY UNIT
# 5100056488 POWER SUPPLY UNIT 300ASC UNIVERSAL 1
SPEAKER, BUZZER
# 5100058064 SPEAKER W1508-094A 1
# 5100058059 SPEAKER TH08-094A 1
PWB ASSY
# 5100057296 MAIN SHEET ASSY 1
* This unit includes the following parts.
******** JACK BOARD 1
******** PRE BOARD 1
******** ROTARY SW BOARD 1
******** PS1 BOARD 1
# 5100057304 IF BOARD ASSY 1
DIODE
5100003360 LED L-934MBD-F01 (153-L-934MBDLF) 1
POTENTIOMETER
5100026264 ROTARY POTENTIOMETER RK11K1120091 3
5100026263 ROTARY POTENTIOMETER RK11K1120AA4 1
# 5100026268 ROTARY POTENTIOMETER RK14K1220A4P 4
01120156 ROTARY POTENTIOMETER RK14K12B0A5B 10KBX2 2
FUSE, FUSE HOLDER
03670512 FUSE 5ST 5-R 5A/250V FUSE1 on PS1 Board 1