NAD CI 940 Service Manual page 11
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Also See for CI 940:
- Owner's manual (13 pages) ,
- Quick setup manual (2 pages) ,
- Quick setup manual (2 pages)
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2.DISPLAY & POWERKEY BOARD
POWER
S901
2
1
PUSHBUTTON
Power key board
D902
JA21
4
1
2
2
3
3
4
1
5
5pin/2.54
BL-BUBJFB52C4V-1
+5VD
+
+
C905
C901
C902
R901
10uF
1000uF
/10V
100nF
10K
Q901
B
C1015
R902
10K
D409
4V7
P901A
SEN DEFEAT
1
TRIG
2
SIG
3
PROT
4
+5VD
5
BGND
6
STANDBY
7
SPA
8
SPB
9
Thermal Protect
10
In put M ute
11
11PIN2.54-A200B
R918
4.7K
+5 V D
B
Q903
C1815
DTA 114EK A
+5VD
Q905
I
JA20
DTA114EKA
1
Q906
I
2
DTA114EKA
R909
510
3
DTA114EKA
4
R910
510
5
R911
510
5pin/2.54
+
C906
R903
10uF
R905
R906
R907
10K
4.7K
4.7K
10K
Q902
B
C1015
C908
R904
10K
0.1uF
34
AD3/P0.3
35
AD2/P0.2
36
R913
1K
AD1/P0.1
37
AD0/AD0
38
VCC
L901
39
P4.2/CCP0/MISO
742792662
40
P1.0/CLKOUT2
C909
41
P1.1
42
P1.2/ECI
0.1uF
43
P1.3/CCP0
44
P1.4/CCP1/SS
R908 1K
Q904
B
+5VD
+
C907
C1815
10uF
+5 V D
Q909
I
DTA114EKA
Q908
I
D903
G
R
R914
R915
1K
1K
DUAL LED
Q907
I
13
IC901
STC12C5A 16S2-35C-LQ FP44
22
A12/P2.4
21
A11/P2.3
20
A10/P2.2
19
C903
22pF
A9/P2.1
18
A8/P2.0
17
S S/P4.0
16
X 901
GND
15
11.0592M HZ
XTAL1
14
XTAL2
13
C904
22pF
RD/P3.7
12
WR/P3.6
+5 V D
Q911
I
DTA114EKA
R
R916 1K
DUA L L ED
+5VD
J901
1
FI RM WARE UPDATE
TXD
2
RXD
3
DGND
4
CON4
I
Q910
DTA 114EK A
D904
G
R917
1K
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