Nokia NSB-9 Service Manual page 273

Customer Care Solutions
Audio
IHF(1:0)
AUDIO(6:0)
AUDIO(17:0)
GENIO(31:0)
Issue 1 03/03
Schematics / Layouts
0 "EARP"
1 "EARN"
3
"MIC1P" C150
1 /2 33n
R154
2
"MIC1N"
C150
2x2k2
2 /2 33n
R168
4 "MICB1"
220R
C154 C155
100n 4u7
GND GND
6 "HOOKINT"
R169
3 "MICB2"
220R
R157 C164
100n
C158 C166 C168
1k0
100n 4u7 100n
GND GND GND
R159
4 "MIC2P" C159 2 /2 33n
5 C159 1 /2 33n
"MIC2N"
2x2k2
C152
C151
R158
1n0 1n0
1k0
GND GND
0 "HEADINT"
"HF"
1
2 "HFCM"
"MIC3P"
8
"MIC3N"
9
C176 C177
XAUDIO(7)
Phone Audio 100n 100n
GND
10 FM-Radio L
11 FM-Radio R
J152
GENIO(14)
J153
GENIO(15)
J154
GENIO(16)
R170
1k0
C173
C169
100n
100n
GND
C179
C178
100n
100n
R163
3k3
GND
Copyright Nokia 2002. All rights reserved.
L150
EXC24CB102U
1 4
2 3
R153
R152
C180 C181
27p 27p
GND GND GND GND
C153
22p
GND
R156
10k
GND
R160
C163
C161 C162 C163
3n3 3n3 2 /2 27p
1 /2 27p
GND GND
C165
1 /2 27p
GND
N150
LM4855ITLX
E3 B2
ENB SPKRout-
E1 D2
CLK SPKROut+
E5
DATA
C171
B6
ROut+
100n
A5 A7
Rin ROut-
B4 D6
Lin LOut+
C170 C174 E7
LOut-
100n 1u0
A1
Bypass
GND
A3
VBAT
Phone_inHS
D4
Phone_inIHF
C175
C3,C5= VBATTRF =VBAT
1u0
C1,C7= GND
GND
0
"EARP"
1
"EARN"
"MICP" 1
"MICN" 0
GND
"XMICN" 1
0
"XMICP"
R161
GND GND
XEAR(0)
XEAR(1)
XEAR(2)
XEAR(3)
C165 C167 C167
2 /2 27p
2 /2 27p 1 /2 27p
GND GND GND
IHF speaker connection
L151
33nH
J150
J151
L152
33nH
R162 R162
Z150
C172 C172
1 /2 27p 2/2 27p
L=
W=0.40
Z151
GND GND GND GND
L=
W=0.40
NSB-9
EAR(1:0)
APE_GPIO(15:0)
SLOWAD(6:0)
AUDUEMCTRL(3:0)
UIDRV(5:0)
HOOKINT
PUSL(3:0)
MCBSP2(5:0)
APE_AUDIO(3:0)
G_AUDIO(11:0)
MIC(2:0)
XMIC(2:0)
0
HEADINT(1:0)
XEAR(3:0)
Gold plating test points
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