User Guide

Nokia Customer Care Schematics RH-19/RH-50
Issue 3 05/2004  2004 Nokia Corporation Page 6
Title: RH-19/RH-50 Audio
"MIC1N"
"XMICN"
"MICB2"
"MIC2N"
IHF
NF
IHF speaker connection
"EARP"
"XEARP"
"MICB1"
"HFCM"
"MICP"
"MIC1P"
"EARP"
AUDIO AMPLIFIER
"EARN"
"MICN"
"HF"
1
Varistor arrays have reliability issues
"HOOKINT"
"EARN"
514B011
"MIC2P"
"HEADINT"
"XEAR"
"XMICP"
"XEARN"
GND
R176
1k0
MIC1_P
GND
GND
R151
/2 VWM16V2
1n0
C173
GND
2x2k2
R162
1n0
C174
R159
1k0
1
R164
/2 2k2
J305
47p
C177
C162
100n
3
GND
2
R164
/2 2k2
1k0
R175
GND
0
GND
1
R171
1k0
C172
C185
1n0
1n0
1u0
C175
1u0
C176
GND
240R/100MHz
L151
22p
C180
GND
47p
C178
0
22p
C156
C161
1n0
MCZ1210AD102T
L150
1
23
4
22p
C154
22p
GND
600R/100MHz
L153
C164
22p
GND
MIDI_P
4
C157
2 /2 VWM16V
R155
3
R153
2x2k2
1
0
MIC2_N
GND
J305_B
1
R156
2k2
C170
33n
1u0
C186
na
GND
GND
GND
R173
220R
C150
1u0
22p
C160
1
7
GND
GND
33n
C153
C183
1u0
na
MIC2_P
GND
GND
GND
1n0
GND
IN+
_SHUTDOWN
GND
J306_B
C187
C2=
LM4890IBLX
N150
VBAT
GNDA2,B2=
IN-
BYPASS
Vo1
Vo2
2
GND
GND
8
R172
27k
33n
C155
VBAT
GND
GND
1
0
22p
C181
22p
C182
R158 820R
GND
GND
MIDI_N
C151
R167
10k
14
IHF_N
1n0
1u0
C152
100n
240R/100MHz
L152
C168
1u0
C167
1n0
C171
9
3
GND
4
GND
2
C158
100n
C163
1u0
100k
R168
6
C169
22p
/2 VWM16V1
0
VBAT
R151
/2 VWM16V1
12
GND
0
VBAT
5
R155
18k
R163
4
1
2
IHF_P
R160
220R
18k
R166
E150
0
C165
22p
33n
C166
22p
C179
MIC1_N
33n
J306
C159
HEADINT(1:0)
G_AUDIO(11:0)
APE_GPIO(15:0)
MCBSP2(5:0)
APE_AUDIO(4:0)
IHF_XEAR(1:0)
HOOKINT
UIDRV(5:0)
AUDUEMCTRL(3:0)
PUSL(3:0)
SLOWAD(6:0)
IHF(1:0)
AUDIO(6:0)
XAUDIO(17:0)
MIC(2:0)
EAR(1:0)
XMIC(2:0)
XEAR(3:0)
GENIO(31:0)