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6
D
12V DC INPUT
J8
1
1
L1
D1
3
C74
MBRD835L
C3
2
P6
1000uF,25V
4
0.1uF
SQD105T-751
R78
R82
10.0k 1%
2.2k
C
2.5V_REF
U11
2.5V reference
TL431
R77
3.01k 1%
STANDBY 5V SUPPLY
U4
LM7805
3 IN
1
OUT
C46
C51
2
0.1uF
1uF
B
2.5V_REF
R86
10.0k 1%
R87
20k
OFF
from CPU
R85
10k
DNS
From front panel
A
POWER_SW
R72
10k
5
+VIN
2
C20
3
C13
0.1uF
330uF,25V
+3V3
R67
10k
4 -
2
U10-B
POWERFAIL
5
+
LM339
POWER DETECT
+5VPERM
U6
1
PIC12C508
VDD
7 GP0
GP5/OSC1/CLKIN
2
NC
6 GP1
GP4/OSC2
3
+5VPERM
5 GP2/T0CKI
GP3/MCLR/VPP
4
NC
NC
VSS
8
R71
10k
9
LM339
+
14
POWER CONTROL MICRO
U10-C
8
-
+3V3
R68
10k
11
LM339
2.5V_REF
+
13
U10-D
10
-
to CPU
4
3
capacitors on input and output of switching reg are Samxon GK series low ESR
+5V REGULATOR
2 VIN
FB
6
7 ON/OFF
BOOST
3
C44
C14
C15
C65
5 SYNC
SW_OUT
1
GND
330uF,25V
330uF,25V
0.1uF
4
U5
LM2670S-5.0
JK_2_61_2670
R74
10k
+VIN
6 -
C6
3
+v
U10-E
7
0.1uF
-v
LM339
12
POWER
2
+5V
0.01uF
SDRH12565-150M
L2
D2
MBRD835L
C71
C72
C55
R45
330uF,25V
330uF,25V
0.1uF
10 ohm
DNS
C21
0.01uF
DNS
Copyright (c) 2006 Akai Digital Ltd.
COMPANY:
1
NC
U10-A
TITLE:
NH00 IO PCB
+
LM339
POWER
PART NUMBER:
ASSY NUMBER:
DRAWN:
DATED:
P.Gaggs
12 Feb 07
FILENAME:
RELEASED:
DATED:
SCALE:
1
REVISION RECORD
LTR
ECO NO:
APPROVED:
DATE:
+3V3 REGULATOR
+3V3
U8
3 IN
OUT
2
1
LT1086CT-3.3
C52
C53
C73
0.1uF
0.1uF
100uF,16V
NUMARK
9-40-0421-C
REV:
9-79-0421-C-0
SIZE:
NH00IOC00C.sch
C
SHEET:
2
OF
3
D
C
B
A
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