Kurzweil K2600 Series Service Manual
7-16
Power Supply Board
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
A
B
C
D
A
B
C
D
1
JP1
GND JOIN
1
2
J107
AUDIO POWER
2
+5V
5
--15V
3
AGND
1
DGND
4
+15V
J108
SCANNER POWER
2
+5V
5
--12V
3
AGND
1
DGND
4
+12V
J101
SYSTEM SECONDARY
4
5
6
3
2
1
J102
HDD SECONDARY
2
1
J104
BACKLIGHT SUPPLY
1
2
3
J106
HDD SUPPLY
1
2
3
4
J103
FAN SUPPLY
2
1
Q5
PN2222
B
C
E
Q3
PN2222
B
C
E
Q6
PN2222
B
C
E
VR4
LM7912
1
GND
2
IN
3
OUT
VR2
LM7915
1
GND
2
IN
3
OUT
VR5
LM7805
2
GND
1
IN
3
OUT
VR7
LM7805
2
GND
1
IN
3
OUT
VR3
LM7812
2
GND
1
IN
3
OUT
VR1
LM7815
2
GND
1
IN
3
OUT
VR6
KA78T12
2
GND
1
IN
3
OUT
D6
1N4002
1
2
D7
1N4002
1
2
D5
1N4002
1
2
D4
1N4002
1
2
-+
AC
AC
D1
KBU04
1
2
3
4
J105
CPU DC POWER
4
+3V
5
+3V+SNS
6
+5V
1
DGND1
2
DGND2
3
DGNDSNS
7
+5V+SNS
8
POWEROK
D2
1N4001
2
1
D11
1N4001
2
1
+
-
U1
TL074
10
9
41
1
8
+
-
U1
TL074
3
2
1
+
-
U1
TL074
12
13
14
+
-
U1
TL074
5
6
7
R42
2K
1
2
R10
2K
1
2
R22
10.0K
1
2
R23
4.7K
1
2
R14
4.7K
1
2
R7
1K
1
2
R25
165K 1%
1
2
R19
84.5K 1%
1
2
R9
100K
1
2
3
R37
200
1
2
R33
200
1
2
R26
357 1%
1
2
R41
3k
1
2
R27
150
1
2
R24
3k
1
2
R20
15k
1
2
R34
510
1
2
R3
10.0K 1%
1
2
R5
1K
1
2
R15
10.0K 1%
1
2
R32
330
1
2
R39
10
1
2
R38
10
1
2
D9
1N4001
12
D10
1N5231B
1
2
D8
1N5234B
1
2
R36
10
1
2
R40
10
1
2
R31
10
1
2
R29
499 1%
1
2
R21
15k
1
2
R35
1k
1
2
R30
15k
1
2
R2
10.0K 1%
1
2
R1
10.0K 1%
1
2
R4
10.0K 1%
1
2
R16
10.0K 1%
1
2
R12
10.0K 1%
1
2
R11
10.0K 1%
1
2
R28
100
1
2
R18
1K
1
2
R6
1K
1
2
R13
4.7K
1
2
R8
4.7K
1
2
R17
100
1
2
Q1
PN2907
B
E
C
Q4
IRFZ30
D
G
S
Q2
IRFZ30
D
G
S
C3
0.1uF
1
2
C2
0.1uF
1
2
C1
0.1uF
1
2
C7
0.1uF
1
2
C8
0.1uF
1
2
C19
0.1uF
1
2
C18
0.1uF
1
2
C15
0.1uF
1
2
C14
0.1uF
1
2
C5
0.1uF
1
2
C4
0.1uF
1
2
C25
470pF
1
2
C13
470pF
1
2
C28
0.1uF
1
2
C22
0.1uF
1
2
+
C23
220uF 16V
1
2
+
C26
100uF 16V
1
2
+
C30
100uF 16V
1
2
+
C6
220uF 16V 12
+
C10
33000uF 16V
1
2
+
C16
100uF 25V
1
2
+
C17
100uF 25V
1
2
+
C20
100uF 16V
1
2
+
C21
100uF 16V
1
2
+
C12
2200uF / 35V
1
2
+
C11
2200uF / 35V
1
2
+
C27
100uF 16V
1
2
+
C9
4700uF / 25V
1
2
+
C24
220uF,6.3V
1
2
+
C29
100uF,6.3V
1
2
D3
MBR1535CT
K
A1
A2
YOUNG CHANG CO., LTD.
of Young Chang Co., Ltd. is prohibited.
Reproduction without the express written consent
Filename:
Doc:
Mfg:
Eng:
Sht
By:
Date:
of
Rev:
K2600
Power Supply
Mike Richmond
021210
RCV0
021210C0
9/16/99
01
01
HD+12
HD+12
HD+12
+5V+SNS
DGNDSNS
HD+12
HD+12
+3V+SNS
DGNDSNS
RCV0: Added D11, 16-Sept-99, M Richmond
RBV0: Added R42, 8-July-99, M Richmond
16VAC
*
+5
DGND
HDGND
FANV+
UNREG
HDGND
BLV+
*
NOTE : Indicates components that are mounted to the heatsink.
All resistors are 5% 1/8W unless specified otherwise.
#
Indicates components needed for operating without an external load.
HD+12
HDGND
5.1V
3.30V
5.0V
*
*
*
*
*
(6.8V)
7VAC
17VAC
6.2V
#
#
#
#
#
*
Summary of Contents for K2600 Series
Page 4: ......
Page 12: ...Kurzweil K2600 Series Service Manual Contents viii...
Page 30: ...2 12 Diagnostics Description of Tests...
Page 50: ...3 20 K2600R Disassembly Assembly Front Panel Assembly...
Page 86: ...4 36 K2600 K2600X Disassembly Assembly K2600X Keyboard Assembly...
Page 102: ...5 16 Troubleshooting K2600R Interconnect Diagram...
Page 130: ......