Nokia 2270, 2272, 2275, 2285 Service Manual
CCS Technical Documentation
Schematics / Layouts
RH-3
Issue 1 06/2003
Nokia Corporation Confidential
Page A-2
Audio
"MIC2P"
"MIC2N"
"HOOKINT"
"HFCM"
"HF"
"EARP"
"EARN"
"MIC1P"
"MIC1N"
"MICB1"
"MIC3N"
"MIC3P"
"MICB2"
R159
/2 1k0
3
4
4
GND
2
R166
10R
R179
/2 VWM16V
?
?
100n
C151
47p
5
6
2
C152
47k
AGND1
3
R155
C176
100n
GND
R150
2 /2 1k0
2x1k0
IN1
IN2
OUT1
OUT2
100n
C154
ESD_LEV=1
ESD_LEV=4
GND
V153
EMIF02-MIC02F1
AGND1
C162
47p
2x1k0
/2 1k0
2
AGND1
AGND1
AGND1
2x1k0
R172
0
1
2
3
4
/2 1k0
2
R170
C163
10U
0
1
GND
8
/2 VWM16V
?
?
AGND1
GND
R179
R161
47k
47p
R178
5R6
0
C174
4
C164
47p
/2 1k0
R160
1
3
C161
AGND1
AGND1
AGND1
100n
1k0
R162
/2 1k0
1
2
R173
47k
2
R160
4
AGND1
5R6
R177
/2 1k0
R151
2
3
/2 1k0
R152
1
1
2
R167
5R6
2x1k0
R170
9
47p
C158
/2 1k0
1
47p
C159
C156
47p
C171
47p
100n
C169
C175
47p
0
1
100n
C160
5R6
R168
100n
C157
AGND1
C153
0
1
1
0
0
GND
47p
R172
/2 1k0
1
100n
C172
2x1k0
47p
C167
47p
C165
/2 1k0
3
4
AGND1
AGND1
2
R152
C168
100n
1
R171
2x1k0
/2 1k0
2
R154
100R
100R
47p
C177
/2 1k0
1
2
1k5
R169
1
1
2
1
R151
C166
/2 1k0
R159
47p
47p
C170
47p
C173
AGND1
2x1k0
1 /2 1k0
R150
AGND1
AGND1
NOT_INSTALLED
X150
1
2
3
4
3
4
AGND1
AGND1
/2 1k0
1
100n
C150
AGND1
2x1k0
R171
MIC(2:0)
EAR(1:0)
XEAR(0)
XEAR(1)
XEAR(3:0)
UIDRV(5:0)
AUDUEMCTRL(3:0)
PUSL(3:0)
IHF(1:0)
SLOWAD(6:0)
HOOKINT
XAUDIO(17:0)
MIC(1)
MIC(0)
MIC(0)
HEADINT
GENIO(31:0)
AUDIO(6:0)
GENIO(28)
XMIC(2:0)