Nokia 2270, 2272, 2275, 2285 Service Manual
CCS Technical Documentation
Schematics / Layouts
RH-3
Issue 1 06/2003
Nokia Corporation Confidential
Page A-1
JEDI_B
CELL/PCS: Modulator,
Upconverter, Driver
VHF PLL
UHF PLL
UHF PLL
VHF VCO
Det_Buffer
Tomahawk
connector
UPP8M
UEM
Regulated supplies
& IQ Signals
Flash
AudioConv
CBus
RFConvClk
DBus
Fls
C
tr
l
VCore
3
3
2
SleepX
LCD/
Keypad
4
YODA
IFVGA, IQ Demod,
BB Filters, VHF VCO
& VHF PLL
MBus
FBus
2
2
UEMInt
PURX
SleepClk
AuxDa
16
8
VIO
2
2
Ostrich
Conn.
SIMIF
VIO
KLight/DLight/CalLED
PwrOnX
3
LS
2
3
9
7
JTAG
Conn.
RX IF AGC PDM
KeyB[10:0]
LCDCtrl
11
3
OSC1
OSC2
32 Khz
X
E
A
R
X
M
IC
Ch
a
rg
e
r
2
2
2
19.2MHz
VCTCXO
ALFRED
LNA, RFA,
mixer & IFA
Is
o
lat
or
Cellular
Duplexer
External
Antenna
Antenna
PCS
Duplexer
Cellular
PCS
Is
ol
at
or
Orca
Cell PA
TX IF AGC PDM
Power
Detector
PATemp
RFBus
TX RF AGC PDM
TX_GATE
4
4
3
4
RxIQD
TxIQD
P_DET
PA_TEMP
AFC_DAC
RxIQ
VBat
BSI
BTemp
2.8-4.2v
PWR_OUT
183.6 IF
TxIQ
SPDT
Internal
Antenna
RH-3 Dual Band CDMA + GPS
Shamu
PCS PA
MB
us
FB
u
s
E
x
tA
d[
23:
16
]
E
x
tA
dD
a[1
5
:0
]
STIBus
JTAG
VCore
FIL_SEL1 & 2
PCS UHF
VCO
TX VHF LO
RX VHF
LO
PCS RF
SAW
CELL RF SAW
PCS RF
SAW
CELL RF
SAW
Diplexer
Ext
Conn
PCS/CELL_SEL
Rx_SW2
Rx_SW1
VR5
VR4
VIO VR3 VR6 VR7
Cell_vco_sel
Buffered 19.2 MHz
VR1A/B to VR7
VIO VR3VR7
DET_ref
Dc-DC
Converter
D0
D1
D2
VR2
Vbat
Vdc-dc
Tx_gate
Dual Reg
VR8 & VR9
VR8
VR9
Vbat
PCS_vco_sel
UHF_CP
UHF PCS LO
UHF Cell LO
D0-3
CELL UHF
VCO
3
Vref1/2
Iref1/2
Vref1,2
Iref1,2
4
2
Headset
connector
2
2
4
SIM
Card
3
Microphone
Earpiece
Vibra
Buzzer
2
2
Gophers GPS
module
Time
s
ta
m
p
G
P
S
R
X
G
P
S
T
X
G
P
S
_
IN
T
_
U
C
L
K
G
P
S
E
N
R
E
S
E
T
P
A
E
N
GPS antenna