Nokia 7370 RM-70 Schematic
Service Schematics
NOKIANOKIA
Introduction
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:
73707370
Exploded view and component disposal
RM-70
Nokia repair SW : Phoenix version 2005.20.7.98
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 should be notified in writing.
Please send E-Mail to: training.sace@nokia.comtraining.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 companyconfidential information,
which may not be disclosed to others without the prior written consent of NOKIA.
Table of Contents PageTable of Contents Page
10
11
12
12
1
2
3
4
5
6
7
8
9
Front page
System connector, IHF speaker
RETU, SIM, Micro, Vibra
TAHVO
RAPGSM, Combo memory, Camera
UI, Key PWB, LCD PWB, Earpice
BT, FM radio
RF- part, BT clock buffer
Signal overview
Component finder engine module
Component finder Key PWB
Component finder LCD module
Component finder LCD PWB
Customer Care / Service & Support Readiness / Content Creation Management
Customer Care / Service & Support Readiness / Content Creation Management
Copyright © 2005 NOKIA Only for training and service purposes
Copyright © 2005 NOKIA Only for training and service purposes
Version: 1.0Version: 1.0 03.11.200503.11.2005
7370 RM-707370 RM-70
Board version: 1lua_50a Board version: 1lua_50a
Front pageFront page
Page 1(12)Page 1(12)
TAHVO
CHARGER
C2000
Charger plug
V2000
ESDA18-1F2
K
C2001
1n0
27p
A
C2017
L2000
220R/100MHz
470n
2A
F2000
J2010
J2000
X2000
1
2
CHARGER PLUG
HW accelator
RETU
IHF speaker
B2103
J2105
J2106
B2102
J2101
J2102
IHF speaker
FM radio
RETU
TAHVO
Flash_trigger
XAUDIO(7:0)
C2107
27p
22
C2111
27p
FMANT(1:0)
USB_ACI(7:0)
L2109
56nH
R2115
14V/50V
L2103
56nH
R2107
14V/50V
GND
R2009
C2015
R2000
220R
C2002
R2003
10R
B1
B2
C3
D3
C2
D2
10n
R2007
IP4065CX11_LF
17k
1k3
33R
33R
15k
GND
2u2
GND
C2003
33n
to UEME
C2004
33n
A2A3
B3
0
HOOKDET
1
MICB2
2
MIC2P
3
MIC2N
4
XEARL
5
XEARLC
6
XEARR
7
XEARRC
SLAVEPU
DPRXD
DMTXD
MASTPD2
MASTPD1
ACI
GND
C2126
10u
C2127
1u0
VIHFAMP
Audio amplifier
N2101
TPA2012D2YZH
D3
OUTR+
D4
OUTR-
A3
OUTL+
A4 B1
OUTL-
A2
PVDD
D2
AVDD
C4
PGND
C3
AGND
GND
3.7V
C2124
100n
GND
GND
J2005
R2008
220k
INR+
INR-
INL+
INL-
G0
G1
_SDR
_SDL
L2111
600R/100MHz
C2119
100n
C2120
J2100
100n
C2118
100n
C2117
100n
R2004
10R
R2005
10R
C2007
10n
GND GND
GND
R2002
10R
C2008
10n 10n
GND GND
C2009 C2010
D1
C1
A1
J2107
C2
B2
J2108
B3
B4
L2004
68nH
3.7V
VBAT
1.8V
VIO
1.8V if IHF
speaker on
Audio_amps_en
L2108
56nH
GND
GND
L2102
56nH
GND
GND
R2114
14V/50V
R2106
14V/50V
C2113
1n0
C2112
C2108
1n0
C2109C2110
1n0
1n0
GND
C2114
1n0
1n0
GND
L2104
220R/100MHz
L2105
220R/100MHz
L2106
220R/100MHz
L2107
220R/100MHz
0
4
1
0
6
5
7
10k
100n
GND
R2001
BGF100
Vcc
1k0
1n0 1n0
50R
50R
1n0 1n0
1k0
ESDA14V2-4BF2
A1
A3
C1
C3
R2006
Meas
to Mic
GND
GND
GND
GND
GND
2.8V
VANA
R2017
120k
B2GND
GND
GND
1.8V if IHF
speaker on
Audio_amps_en
1n0
2k2
2k2
1n0
C1
D1
V2001
DTC143ZM-T2L
OUT
R1
IN
J2011
4k7
R247k
GND
1.8V
VIO
C2020
10n
Analog switch/Attenuator
TS5A3159DCKR
6
IN
4
COM
5=
2=
N2000
VIO
GND
GND
Analog switch/Attenuator
N2001
TS5A3159DCKR
6
IN
4
COM
5= VIO
2=
GND
R2010
100R
C2005
VOUT
VBUS
Z2001
600R/100MHz
Z2000
600R/100MHz
J2003
J2001
J2006
J2004
FM radio
production
test points
Z2003
600R/100MHz
C2011
System connector
X2001
1
2
3
ACI
4
VOUT
5
Vbus
6
D+
7
Ddata gnd
8
9
Xmicn
10
Xmicp
11
Xear_l_n
12
Xear_l_p
13
Xear_r_n
14
Xear_r_p
GND
AGND
GND
C2012
C2013
10p
10p
C2014
10p
10p
C2018
10n
C2019
10n
GND
L2001
EXC24CB102U
1
4
23
C2006
10n
10n
GND
GND
1
NO
3
NC
1
NO
3
NC
L2002
EXC24CB102U
4
L2003
EXC24CB102U
4
1
23
1
23
GND
Customer Care / Service & Support Readiness / Content Creation Management
Customer Care / Service & Support Readiness / Content Creation Management
Copyright © 2005 NOKIA Only for training and service purposes
Copyright © 2005 NOKIA Only for training and service purposes
Version: 1.0Version: 1.0 03.11.200503.11.2005
C2016
270p
GND
7370 RM-707370 RM-70
Board version: 1lua_50a Board version: 1lua_50a
System connector, IHF speakerSystem connector, IHF speaker
Page 2(12)Page 2(12)
System connector
FM radio
TAHVO
AHNE
RAPGSM
FM radio
RAPGSM
TAHVO
RAPGSM
TAHVO
RAPGSM
XAUDIO(7:0)
AUDIO(8:0)
C2075
SLOWAD(6:0)
DIG_AUDIO(5:0)
CBUS(3:0)
TXC(2:0)
CHSWSTAT
INT_SIM(5:0)
ACI(1:0)
Battery connector
C2076
1u0
10n
GND
GND
X2070
+1
GND
2
3
BSI
GND
C2077
10n
GND
Power switch
J2420
123
S2403
4
Power On
GND
C2070
150u_10V
14V/50V
R2070
R2100
MIC1P
3
MIC1N
4
R2101
220R
MICB1
C2200
1u0
2
EARP
EARN
0
1
2
R2102
220R/100MHz
220R/100MHz
C2222
1u0
GND
CLK
0
1
C2221
1u0
GND
3
J2216
J2217
J2218
J2219
2
3
0
8
6 35
7
3.7V
VBAT
C2079
C2078
C2074
C2073
10n
1u0
GND
GND
GND
R2417
C2071
47k
27p
GND
PWRON
R2406
27k
R2404
14V/50V
GND
27p
GND GND
BTEMP Resistor
C2403
47p
GND
27p
1.35V
VREF
R2200
100k
2
BSI
3
BTEMP
5
LS
6
LST
1
RFTEMP
4
VCHAR
0
WTXDET
C2202
C2223
10n
GND
C2204
C2205
C2203
1n0
1n0
1n0
GND
1n0
GND
GND
14
C2224
GND
2.8V
VANA
R2203
1k0
R2202
10n
C2206
R2201
1k0
120k
GND
R2214
4k7
VBAT
3.7V
C2207
1n0
1n0
GND
GND
C2208
B2200
27p
GND
32.768kHz
C2209
22p
GND
Sleepclock oscillator
J2200
0
J2201
1
J2202
2
J2203
3
J2204
4
5
J2205
6
J2206
0
J2207
1
J2209
2
7
26
0
2
1
8
17
3.7V
VBAT
L2202
220R/100MHz
L2203
600R/100MHz
L2205
220R/100MHz
L2206
600R/100MHz
3.7V
VBAT3
GND
C2225
1u0
GND
C2228
1u0
3.7V
VBAT1
C2227
C2226
1u0
GND
GND
1u0
L2204
600R/100MHz
3.7V
VBAT2
GND
C2230
1u0
3.7V
VBATH
C2231
GND
3.7V
10u
VBATCP
C2232
1u0
GND
R2204
1k0
R2213
0
2
1
1
0
4k7
25
4
R2205
1k0
VANA
2.8V
VANA
M12
L11
L12
G10
F10
1
2.5V
GND
J2213
J2214
J2215
16
C2281
1u0
VBACK
Backup battery
G2200
GND
J2222
J11
E12
J10
M10
K10
R2216
2M2
GND
J2210
J2212
18
GND
J2220
J2221
C12
K11
H12
F12
B12
RETU
D2200
RETU_3.02
K1
Mic1P
J3
Mic1N
J1
Mic2P
J2
Mic2N
E1
Mic3P
E2
Mic3N
E3
Mic3PR
D2
Mic3NR
C3
VDARx
K2
VDATx
BSI
L3
BTemp
HeadDet
HookDet
M2
LS
L2
LST
M1
RFTemp
VBat6
VChar
M3
WTxDet
L9
CrI
K9
CrO
L8
VBack
WDDis
L1
SIMDetX
PwrOnX
M4
AudClk
A4
EarDaL
B4
EarDaR
L4
MBusTx
A3
PMARP
C4
PMARN
M5
SerClk
L5
SerData
K5
SerSelX
SleepX
M6
TxCClk
L7
TxCCtrl
L6
TxCDa
HV
ChSwS
C5
SIMClk1
C6
SIMDa1
A5
SIMIOC1
B6
SIMClk2
A6
SIMDa2
B7
SIMIOC2
VBat1
VBat2
A8
VBat3
VBat4
VBat5
B3
VBatH
VBatCP
EarP
EarN
XEarL
XEarLC
XEarR
XEarRC
MicB1
MicB2
MicBCap
VSARx
VSATx
MicSub
VibraP
VibraN
HFSpP
HFSpN
VAna
VAux
VDRAM
VRFC
VSIM1
VSIM2
VRCP1
VRCP2
FlyHigh
FlyLow
MBusRx
MicData
PURX
RetuInt
SlClk
MBus
RstX
TxC1
TxC2
SIMRstC1
SIMClkC1
SIMDaC1
SIMClkC2
SIMDaC2
SIMRstC2
Gnd1
Gnd2
Gnd3
Gnd4
GndCP
GndH
VBG
VRef
VIO
VR1
VCP
AFC
TM
6
7
45 1
EARP
D3
D1
F3
F1
G1
G3
H1
H2
G2
C1
H3
F2
GND
A2
VIBRAP
A1
VIBRAN
B1
C2201
C2
1u0
H10
GND
F11
J12
E11
M11
D12
G11
G12
A7
C9
A10
C10
B10
B11
C2210
A12
1u0
K4
B5
K3
K8
M9
H11
E10
M8
K7
M7
C11
C7
C8
B9
A9
D10
L10
D11
K12
B8
K6
A11
B2
GND
C2229
1n0
GND
010
1
EARN
2
R2212
470R
GND
C2211
4u7
GND
Sleepx 1.8V in local mode
C2100
C2101
C2102
2u2
GND
0R
L2272
L2273
C2220
GND
3
7
EMIF03-SIM02F2
0
1
2
3
4
GND
R2103
R2700
0R
C2274
33n
33n
C2103
1n0
GND
C2275
1n0
GND
C2212
GND
SIM Reader
R1
R2
R3
EMIF01-SMIC01F2
B1
to Asic
C1
1n0
GND3 1n0
A2
50R
Vbias
C2104
1n0
GND
C2273
1n0
1n0
1u51u5
GND
2k22k2
2k2
150p
C2106
27p
GND
1u51u5
GND GND
1n0
C2214
1n0
50R
Depends on SIM 1.8V/ 3V
VSIM1
R2701
0R
Side
GND
C2701
C2700
27p
100n
GND
GND1
to Mic
GND2 B2
L2112
600R/100MHz
C2105
27p
1u5
19
GND
C2215C2213
3
2
1
7
C2GND3
A3
B3
C3
GND
600R/100MHz
1u5
SIM
X2700
C1
C2
C3
SW
SF7W006S4C
Microphone
J2103
J2104
B2100 na
OUT
1
2
GND
EAR_P
UI
EAR_N
Vibra
M2100
FM-0035-C1
-
+
L2113
C2219
GND
GND
GND
GND
GND
M
GND
1.35V
VREF
VANA
2.8V
VAUX
VDRAM
1.8V
VIO
VR1
2.5V
VRFC
1.8V if RF active
VSIM1
Depends on SIM 1.8V/ 3V
VSIM2
VRCP1
4.7V if RF active
VRCP2
C2217
C2216
1u5
1u5
GND
GND
4
C5
5
C6
6
C7
8
9
10
11
GND
0
EMINT(1:0)
USB_ACI(7:0)
TXC_CONV(2:0)
PUSL(7:0)
RAPGSM
System connector
TAHVO
AHNE
FM radio
TAHVO
BT
RAPGSM
Customer Care / Service & Support Readiness / Content Creation Management
Customer Care / Service & Support Readiness / Content Creation Management
Copyright © 2005 NOKIA Only for training and service purposes
Copyright © 2005 NOKIA Only for training and service purposes
Version: 1.0Version: 1.0 03.11.200503.11.2005
7370 RM-707370 RM-70
Board version: 1lua_50a Board version: 1lua_50a
RETU, SIM, Micro, VibraRETU, SIM, Micro, Vibra
Page 3(12)Page 3(12)
Flash interface
J20
6
0
VPP
VBUS
D
N
G
X2060
1
Charger plug
RETU
CHARGER
SLOWAD(6:0)
CHSWSTAT
C2309
22u
C2306
1u0
3.7V
VBAT
GND
3.7V
VBAT
GND
L2301
220R/100MHz
R2307
100R
V2302
RSX101VA-30TR
4
Current gauge
J2306
R2300
4
CURRENT_SEN
BGND
Local mode=1.4V
VCORE
C2302
22u
GND
J2307
SENSESENSE+
23
1
GND
C2300
3.7V
VBAT
10n
GND
L2306
600R/100MHz
C2301
22u
GND
C2307
1u0
GND
2.5V if accessory
connected
VOUT
C2312
1u0
GND
5V if USB connected
VBUS
C2313
1u0
GND
L2302
10uH
J2300
GND
GND
GND
GND
D10
E10
F10
G10
A10
B10
C10
H10
G2
K10
H2
A7
A6
A5
B6
B4
B5
A4
E9
D9
G9
A8
B8
A9
F9
J1
F1
F2
J8
H3
H4
H5
H6
H7
H8
G3
G8
F3
F8
TAHVO
TAHVO_V5.2_LF
VBAT1
VBAT1
VCoreCoil
VCoreCoil
VCore
GND1
GND1
VCharIn1
VCharIn2
VCharInK
VCharOut1
VCharOut2
VCharOutK
VCharADC
ChSwS
SMPSClk
GND4
VBAT3
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
D-_TXD
VPP_VIO
VCCint
RCV_FRX2
VP_FRX
VM_CLK
SLAVESWSET
SLEEPX
TahvoInt
CbusDataNC
CbusSelX
CbusClk
VcoreDef
FlashM
TestMode
TestOut
GenOut1
GenOut2
GenOut3
PWM300
Clk600
SleepClk
CLK
RXD2
VIO
OEX
FSE0
FTX
RSTX
PURX
4
5
6
3
2
1
0
GND
Traceability pad
1
2
0
J2316
1.8V if lights on
C2304
10n
PWMTAHVO
1.8V
VIO
GND
L2304
22uH
LED driver
4W_LED_DRIVER
A2
EN
C2
IND
B3
FB
A3
NC
N2301
VOUT
VDD
AGND
PGND
3.7V
VBAT
L2305
600R/100MHz
Power supply for display
and keyboard lights
C1
B1
A1
C3
GND
C2314
4u7
C2305
1u0
13V if lights on
VLEDOUT1
C2315
4u7
USB_ACI(7:0)
USB_CMT(8:0)
PUSL(7:0)
EMINT(1:0)
CBUS(3:0)
GEN_OUT(3:0)
System connector
RETU
RAPGSM
FM radio
RETU
BT
RAPGSM
RAPGSM
FM radio
RETU
RAPGSM
UI
12
34
678
RXD
TXD
RXD2
CLK
J10
H9
J9
J6
K7
J7
K8
A1
K9
A3
J4
K4
J5
VO
K2
J3
K3
K5
K6
B3
D2
D1
C2
C1
B1
B2
C9
A2
B7
B9
J2
K1
H1
G1
E1
E2
E3
NC
E8
NC
D3
NC
D8
NC
C3
NC
C4
NC
C5
NC
C6
NC
C7
NC
C8
NC
GND
C2303
J2309
J2314
J2310
J2311
J2312
J2313
J2315
GND
GND
1u0
5
4
3
2
1
0
6
2
0
3
1
0
1
2
7
1
5
J2308
15
Customer Care / Service & Support Readiness / Content Creation Management
Customer Care / Service & Support Readiness / Content Creation Management
Copyright © 2005 NOKIA Only for training and service purposes
Copyright © 2005 NOKIA Only for training and service purposes
Version: 1.0Version: 1.0 03.11.200503.11.2005
7370 RM-707370 RM-70
GND
0,5V if lights on
Board version: 1lua_50a Board version: 1lua_50a
GND
TAHVOTAHVO
GND
GND
SETCURR1
UI
Page 4(12)Page 4(12)
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