Nokia 6125 RM-178 Schematic
Service Schematics
Introduction
1
IMPORTANT:
This document is intended for use by authorized NOKIA service centers only.
“Service Schematics” was created with focus on customer care.
The purpose of this document is to provide further technical repair information for
NOKIA mobile phones on Level 3/4 service activities.
It contains additional information such as e.g. “Component finder”,
“Frequency band table” or “Antenna switch table”.
The “Signal overview” page gives a good and fast overview about the most
important signals and voltages on board.
Saving process time and improving the repair quality is the aim of this document.
It is to be used additionally to the service manual and other training
or service information such as Service Bulletins.
All measurements were made using following equipment:
Exploded view and component disposal
6125
RM-178
Nokia repair SW : Phoenix version 2005.44.4.120
Oscilloscope : Fluke PM 3380A/B
Spectrum Analyzer : Advantest R3162 with an analog probe
RF-Generator / GSM Tester : Rhode & Schwarz CMU 200
Multimeter : Fluke 73 Series II
While every endeavour has been made to ensure the accuracy of this document, some
errors may exist. If the reader finds any errors, NOKIA shall be notified in writing.
Please send E-Mail to: training.sace@nokia.com
Copyright © NOKIA
This material, including documentation and any related computer programs is protected
by copyright, controlled by NOKIA. All rights are reserved. Copying, including reproducing,
modifying, storing, adapting or translating any or all of this material requires the prior
written consent of NOKIA. This material also contains confidential information, which may
not be disclosed to others without the prior written consent of NOKIA.
Table of Contents Page
Front page
System connector
RETU
TAHVO
RAPGSM, Combo memory, Micro SD
User Interface
Camera, Earpiece, IHF speaker
Bluetooth, FM radio
RF part
Signal overview
Component finder
Component finder UI
1
2
3
4
5
6
7
8
9
10
11
12
Customer Care / Service & Support Readiness / Content Creation Team
Confidential - Copyright © 2006 NOKIA Only for training and service purposes
Version: 1.0 23.03.2006
6125 / RM-178
Board version: 1va_01ca
Fr
ont p
a g e
Page 1 (12)
TAHVO
RETU
CHARGER
XAUDIO(7:0)
0
1
2
3
4
5
6
7
R2004
10R
HOOKDET
MICB2
MIC2P
MIC2N
XEARL
XEARLC
XEARR
XEARRC
R2005
10R
R2002
10R
R2003
10R
R2000
220R
C2002
Charger plug
L2000
C2001
470n
GND
1
23
ESDA18-1F2
GND
MCZ1210AD102T
4
V2000
L2001
C2000
27p
R2001
1n0
2k2
to UEME
2k2
1n0
BGF100
1n0 1n0
1n0 1n0
1k0
50R
50R
Vcc
Meas
to Mic
GND
1k0
GND
GND
GND
GND
J2002
C2005
GND
MCZ1210AD102T
4
C2006
10n
10n
GND
L2002
2u2
GND
C2003
33n
C2004
33n
J2003
KA
1
23
220R/100MHz
2A
F2000
2.5V if accessory connected
VOUT
5V if USB connected
VBUS
600R/100MHz
600R/100MHz
Z2001
Z2000
J2000
J2001
GND
charge
charge gnd
ACI
VOUT
Vbus
D+
D-
Xmicn
Xmicp
Xear_l_n
Xear_l_p
Xear_r_n
Xear_r_p
X2002
1
2
System connector
X2000
1
2
3
4
5
6
7
8
9
10
11
12
13
14
GND
AGND
GND
FM Radio
RETU /
TAHVO
FMANT(1:0)
USB_ACI(7:0)
L2003
J2004
C2007
10n
GND
0
4
SLAVEPU
1
DPRXD
0
DMTXD
6
MASTPD2
5
MASTPD1
7
ACI
C2008
10n
C2009
C2010
10n
10n
GNDGND
GND
J2005
J2006
GND
L2004
68nH
R2008
MCZ1210AD102T
4
2.8V
VAUX
220k
120k
1 2
3 4
RESNET_220K_120K
GND
1
23
R2006
ESDA14V2-4BF2
A1
A3
C1
C3
600R/100MHz
B2GND
GND
R2007
IP4065CX11_LF
J2007
J2008
J2009
GND
GND
17k
1k3
33R
33R
15k
C2015
270p
R2009
220R
Z2003
C2011
C2013
C2012
10p
C2014
10p
10p
10p
Customer Care / Service & Support Readiness / Content Creation Team
Confidential - Copyright © 2006 NOKIA Only for training and service purposes
Version: 1.0 23.03.2006
GND
6125 / RM-178
Board version: 1va_01ca
System connector
Page 2 (12)
Battery connector
X2070
J2070
VBAT
BSI
J2072
GND
GND
GND
220R/100MHz
L2203
600R/100MHz
220R/100MHz
L2202
L2205
BGND
C2231
GND
~4V
10U
VBAT3
Microphone
R 2071
14V/50V
C2225
1u0
GND
C2228
1u0
GND
~4V
VBATH
GND
J2071
GND
B2100
J2073
BSI
BTEMP
R2070
47k
BTEMP Resistor
C2226
1u0
GND
1
OUT
GND
2
GND
~4V
VBAT
C2073
150u_10V
D
N
G
TAHVO,
AHNE
~4V
VBAT1
C2227
GND
L2206
600R/100MHz
1u0
600R/100MHz
C2232
1u0
C2 GND3
A3
B3
C3
C2074
10p
D
N
G
SLOWAD(6:0)
L2204
~4V
VBATCP
GND
GND1
1n0
to Mic
G ND 2B2
C2071
27p
GND
RAPGSM
RAPGSM
TAHVO
RAPGSM
RAPGSM
~4V
VBAT2
C2230
1u0
GND
R2100
EMIF01-SMIC01F2
1n0
2k2 2k2
50R
C2072
27p
DIG_AUDIO(5:0)
INT_SIM(5:0)
RAPGSM
C2100
B1
to Asic
1n0
GND3
2k2
50R
Vbias
150p
33n
C1
A2
C2101
33n
R2101
220R1n0
C2102
2u2
GND
1.35V
VREF_INT
R2200
100k 120k
BSI
5
6
1
4
0
CBUS(3:0)
CHSWSTAT
TXC(2:0)
ACI(1:0)
BTEMP
LS
LST
RFTEMP
VCHAR
WTXDET
C2202
1n0
12
C2203
1n0
R2214
4k7
C2204
C2205
1n0
1n0
GND
GNDGND
J2200
0
1
2
3
J2204
4
J2205
5
C2206
MIC1P
MIC1N
MICB1
2
3
4
2
2.8V
VANA
R2201
R 2213
4k7
Backup
battery
~4V
Sleepclock oscillator
1n0
GND
1
GND GND
0
1
2
C2208
B2200
27p
8z32.76
kH
C2207
1n0
GNDGND
VBAT
VBACK
C2209
R2202
1k0
GND
22p
78
R2203
G2200
GND
0
2
1
R2216
2M2
0
2
1
R2204
1k0
VANA
C2223
10n
56
R2205
1k01k0
0
R2206
1k0
R2207
1k0
R2208
1k0
R2209
1k0
RETU
D2200
Mic1P
Mic1N
Mic2P
Mic2N
Mic3P
Mic3N
Mic3PR
Mic3NR
VDARx
VDA Tx
BSI
BTemp
HeadDet
HookDet
LS
LST
RFT emp
VBat6
VChar
WTxDet
CrI
CrO
VBack
SIMDetX
PwrOnX
WDDis
AudClk
ChSwS
EarDaL
EarDaR
MBusTx
PMARP
PMARN
SerClk
SerData
SerSelX
SleepX
TxCClk
TxCCtrl
TxCDa
HV
SIMClk1
SIMDa1
SIMIOC1
SIMClk2
SIMDa2
SIMIOC2
VBat1
VBat2
VBat3
VBat4
VBat5
VBatCP
VBatH
RETU_3.02
J2221
XEarL
XEarLC
XEarR
XEarRC
MicB1
MicB2
MicBCap
VSARx
VSA Tx
MicSub
HFS pP
HFS pN
VibraP
VibraN
VDRAM
VRFC
VSIM1
VSIM2
VRCP1
VRCP2
FlyHigh
FlyLow
MBusRx
MicData
PURX
RetuInt
SIMDaC1
SIMClkC1
SIMRstC1
SIMClkC2
SIMDaC2
SIMRstC2
GndCP
EarP
EarN
VRef
VAna
VAux
VCP
SlClk
MBus
RstX
TxC1
TxC2
Gnd1
Gnd2
Gnd3
Gnd4
GndH
VBG
VIO
VR1
AFC
TM
K1
J3
J1
J2
E1
E2
E3
VANA
C2224
10n
GNDGND
C2281
1u0
SIMDetX
GND
J2210
J2212
GND
WATCHDOG ENABLE
J 2220
D2
C3
K2
M12
L3
L11
L12
M2
L2
M1
G10
F10 F11
M3
L9
K9
L8
L1
E12
J11
GND
M4
K10
A4
B4
L4
A3
C4
M5
L5
K5
J10
M6
L7
L6
M10
C5
C6
A5
B6
A6
B7
GND
C12
K11
A8
H12
F12
B12
4V
PWRON
R2403
4k7
14V/50V
GND
R2404
C2412
27p
GND
1 0
4
5 6 7 13 2
D3
D1
F3
F1
G1
G3
H1
H2
G2
C1
H3
F2
GND
B1
C2
A2
A1
C2201
1u0
H10
J12
E11
M11
D12
G1 1
G12
A7
C9
A10
C10
B10
B11
A12
M9
H11
E10
M8
M7
C7
C8
C1 1
D10
L10
D11
K12
A11
GND
C2210
1u0
C221 1
K4
B5
K3
K8
K7
B9
A9
B8
K6
B2B3
4u7
GND
Power / End key
S2415
GND
L2270
220R/100MHz
L2271
220R/100MHz
L2212
220R/100MHz
L2211
220R/100MHz
C2271
C2270
C2272
1n01n0
GND
C2273
C2275C2274
27p
27p
0
1n0
1
1n0
EARP
EARN
HFSPP
HFSPN
VIBRAP
VIBRAN
0
1
4.7V if RF active
GND
VREF_INT
GND
1.35V
C2103
10p
GND
VREFVR 1VRCP1
0
16
1
2
3
R2212
470R
VRCP2
C2221
1u0
GND
GND
2
C2200
GND
1u0
VS IM 1 VA UX
C2222
C2220
C2212
1u0
GND
3
7
1u5
1u5
G ND
G ND
Depends on SIM 1.8V/3V
1.8V
1.8V
2.5V
VIO
VR F C VA NA
C2213
C2214
1u51u5
GND
GND
1
0
2
VDRAM
C2215
1u5
1u5
GND
CLK
C2219
1u5
GND
R2700
EMIF03-SIM02F2
R1
R2
R3
2.8V
C2216
GND
SIM Reader
C2217
1u5
GND
Side
CLK
GND
18
3
J2216
0
J2217
1
J2218
2
J2219
3
4
C2229
C2218
1n0
GND
1n0
GND
APE sleepX
GND
AUDIO(8:0)
XAUDIO(7:0)
H_BRIDGE(3:0)
Vibra
C2104
10p
GND
EMINT(1:0)
USB_ACI(7:0)
AFC
TXC
Depends on SIM 1.8V/3V
X2701
SIM
PUSL(7:0)
FM Radio, UI
System connector
UI
+
A2102
M
-
RAPGSM
TAHVO, System conn.
VCTCXO
AHNE
?
VSIM1
17
5
6
7
G ND
C2700
GND
TAHVO,
RAPGSM
100n
Customer Care / Service & Support Readiness / Content Creation Team
Confidential - Copyright © 2006 NOKIA Only for training and service purposes
Version: 1.0 23.03.2006
6125 / RM-178
Board version: 1va_01ca
RETU
Page 3 (12)
Charger plug
RETU
RETU
CHARGER
SLOWAD(6:0)
CHSWSTAT
~4V
VBAT
C2306
1u0
Flash interface
Local mode = 1.4V
VCORE
C2302
22u
GND
~4V
B
V AT
GND
L2301
220R/100MHz
C2309
22u
J2060
VP P
VB US
1 2
6 7 8
GND
X2060
1
3 4
D
X
LK
R
TX D
R XD 2
C
GND
Traceability pad
TAHVO
C2300
10n
GND
R2307
100R
RSX101V A-30TR
V2302
GND
VBA T
~4V
4
2.5V if accessory
connected
S E NS E +
S E NS E -
L2306
600R/100MHz
VOUT
C2301
22u
GND
C2307
GND
C2312
GND
5V if USB connected
2 3
1
CURRENT_SEN_30um
R2300
GND
Current gauge
4
BGND
VBUS
GND
L2302
10uH
1u0
1u0
C2313
1u0
J 2300
C2310
10u
GND
GND
A7
A6
A5
B6
B4
B5
A4
D10
E10
E9
F10
G10
F9
D9
J1
F2
GND
G9
J8
GND
A10
B10
A8
C10
B8
A9
GND
H10
G2
H2
K10
H3
H4
H5
H6
H7
H8
G3
G8
F3
F8
GND
TAHVO_V5.2_LF
VBA T1
VBA T1
VCoreCoil
VCoreCoil
VCore
GND1
GND1
VCharIn1
VCharIn2
VCharInK
VCharOut1
VCharOut2
VCharOutK
VCharADC
ChSwS
GND4
VBA T3
GND3
NC
NC
NC
NC
GND5
Vout
SENSE+
SENSE-
VCC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
N2300
Slave_PU
Master_PD1
Master_PD2
D+_RXD
VPP_VIO
RCV_FRX2
VM_CLK
SLA VESWSET
CbusDataNC
CbusSelX
VcoreDef
TestMode
GenOut1
GenOut2
GenOut3
PWM300
SleepClk
CLK
RXD2
D-_TXD
VCCint
OEX
FSE0
VP_FRX
FTX
RSTX
PURX
SLEEPX
TahvoInt
CbusClk
FlashM
TestOut
Clk600
SMPSClk
C2305
USB_ACI(7:0)
1u0
C2315
J10
H9
J9
J6
K7
J7
K8
A1
C2303
K9
1u0
A3
VIO
J2309
J4
J2314
K4
J2310
J5
VO
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
J231 1
K2
J2312
J3
J2313
K3
K5
J2315
K6
B3
D2
D1
C2
C1
B1
B2
C9
A2
B7
B9
J2
GND
K1
H1
G1
E1
E2
J2308
F1
E3
E8
D3
D8
C3
C4
C5
C6
C7
C8
GND
13
4
5
6
3
2
1
0
GND
5
4
3
2
1
0
6
2
0
3
1
2
0
7
1
5
UI
PWM300
5
6
N2302
PEMD9
1.8V
VIO
GND
34
2
1
C2304
10n
GND
Key_EN
100k
GND
PWMTAHVO
R2301
SETCURR1
GND
LED Driver
4W_LED_DRIVER
A2
EN
C2
IND
B3
FB
A3
NC
L2304
22uH
N2301
L230 5
600R/100MHz
VOUT
VDD
AGND
PGND
1
~4V
VBAT
GND
C1
B1
A1
C3
GND
C2314
4u7
GND GND GND
RETU, System connector
USB_CMT(8:0)
PUSL(7:0)
EMINT(1:0)
CBUS(3:0)
RAPGSM
Power supply for keyboard light
14V if lights on
VLEDOUT1
C2316
4u7
56p
C2317
27p
GND
Customer Care / Service & Support Readiness / Content Creation Team
Confidential - Copyright © 2006 NOKIA Only for training and service purposes
Version: 1.0 23.03.2006
6125 / RM-178
Board version: 1va_01ca
TAHVO
Page 4 (12)
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