TRANSCEIVER
NHK–4
06/97JR
Technical Documentation
Contents of Transceiver
Transceiver NHK–4 7–2
Introduction 7–2
Functional Description 7–2
Interconnection Diagram 7–3
Exploded View of NHK–4NX (Nokia 2140) 7–4
Assembly Parts of NHK–4NX 7–5
Exploded View of NHK–4NY, –4BT, –4RY (Nokia 2148) 7–6
Assembly Parts of NHK–4NY, –4BT, –4RY 7–7
Exploded View of NHK–4AX (Nokia 2142) 7–8
Assembly Parts of NHK–4AX 7–9
Exploded View of NHK–4BX, –4PT (Nokia 2146) 7–10
Assembly Parts of NHK–4BX, –4PT 7–11
7–1
Copyright Nokia Mobile Phones
TRANSCEIVER
NHK–4
Transceiver NHK–4
Introduction
The NHK–4 is a radio transceiver unit for the PCN network. It is PCN power
class 1 transceiver providing 11 power levels at a maximum power of 1 W.
The transceiver consists of three modules: system module, user interface module and mechanics.
The plug–in SIM (Subscriber Identity Module) card reader is located inside the
phone.
Functional Description
The transceiver electronics consist of radio module (system + RF blocks) and
UIF module. UIF module is connected to radio module with a connector. System blocks and RF blocks are interconnected with PCB wirings. Transceiver
can be connected to accessories with a bottom system connector, which includes charging and accessory control.
06/97JR
Technical Documentation
7–2
Copyright Nokia Mobile Phones
The system blocks provides MCU and DSP environments, logic control IC
(D2CA), memories, audio processing and RF control hardware (RFI). On board
power supply circuitry delivers operating voltage for both system and RF
blocks.
The micro controller unit (MCU), Hitachi H8/536, communicates with DSP, memories and logic control IC (D2CA) with 8 bit data bus.
RF block is designed for a handportable phone; which operates in GSM system. Purpose of the RF block is to receive and demodulate radio frequency signal from the base station and to transmit a modulated RF signal to the base
station.
TRANSCEIVER
NHK–4
06/97JR
Technical Documentation
Interconnection Diagram
SIM Display
524
2
MIC
UI – MODULE
7–3
Copyright Nokia Mobile Phones
2
EARPIECE
2
BUZZER
RADIO – MODULE
16 2+2 2
SYSTEM
CONNECTOR
30
4
BATTERY
CHARGER ANTENNA
TRANSCEIVER
NHK–4
06/97JR
Technical Documentation
Exploded View of NHK–4NX (Nokia 2140)
7–4
Copyright Nokia Mobile Phones
TRANSCEIVER
NHK–4
06/97JR
Technical Documentation
Copyright Nokia Mobile Phones
Assembly Parts of NHK–4NX
ITEM Q’TY CODE DESCRIPTION VALUE, TYPE
1 9450269 A cover 2C 24116
2 9457279 Window 3C 25908 (Nokia 2110)
5 9790055 Sidekeymat 3D 22995
6 9790054 Power keymat 4C 23347
7 9790186 Keypad DMC00166
8 9510298 A shield 1D 24197 B
9 9510299 B shield 1D 24198 B
10 9380115 Type label (print DMP02062–EN)
11 9457112 Connector cover DMD01187
12 6 6291662 PT screw 1.8x8 FeZn TX6
13 9450434 B cover 1D 24212
14 6 6290060 PT screw M2x5–BT ZNB TORX6
15 9450230 SIM cover 3D 23018
16 0660095 Antenna JTI/PCN 1710/1880 MHz 76 mm
17 9510286 Edge clip 4D 26101
T1 0200173 UIF module DU8
T2 0200515 System module GR9
7310366 Tape Polyethylene l = 10 cm
7–5
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NHK–4
06/97JR
Technical Documentation
Copyright Nokia Mobile Phones
Exploded View of NHK–4NY, –4BT, –4RY (Nokia 2148)
7–6
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NHK–4
06/97JR
Technical Documentation
Copyright Nokia Mobile Phones
Assembly Parts of NHK–4NY, –4BT, –4RY
ITEM Q’TY CODE DESCRIPTION VALUE, TYPE
1 9457691 A cover for NHK–4NY DMC 00610 N2 blue
1 9457214 A cover for NHK–4NY 2C 25195 blue
1 9457215 A cover for NHK–4NY 2C 25195 black
1 9457472 A cover for NHK–4BT DMC00323
1 9457511 A cover for NHK–4BT DMC00323 blue
1 9457421 A cover for NHK–4RY (printed) DMC00294
2 9457176 Window for NHK–4NY 4C 24841 blue
2 9450777 Window for NHK–4NY 4C 24841 black
2 9457466 Window for NHK–4RY DMC00314
2 9457467 Window for NHK–4BT DMC00315
5 9790055 Sidekeymat 3D 22995
6 9790124 Power keymat 4C 25142
7 9790194 Keypad DMC00167
8 9510298 A shield 1D 24197 B
9 9510299 B shield 1D 24198 B
10 9380115 Type label (print DMP02065) (N2148)
10 9380115 Type label (print DMP02066) NHK–4NY
10 9380115 Type label (print DMP02067) B400 BT
10 9380115 Type label (print DMP00671) B400 BT
10 9380115 Type label (print DMP00809) NHK–4RY Orange
11 9457112 Connector cover DMD01187
12 6 6291662 PT screw 1.8x8 FeZn TX6
13 9450434 B cover 1D 24212
14 6 6290060 PT screw M2x5–BT ZNB TORX6
15 9450230 SIM cover 3D 23018
16 0660095 Antenna JTI/PCN 1710/1880 MHz 76 mm
17 9510286 Edge clip 4D 26101
T1 0200516 UIF module GU3E
T2 0200515 System module GR9
7310366 Tape Polyethylene l = 10 cm
7–7
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NHK–4
06/97JR
Technical Documentation
Exploded View of NHK–4AX (Nokia 2142)
7–8
Copyright Nokia Mobile Phones
TRANSCEIVER
NHK–4
06/97JR
Technical Documentation
Copyright Nokia Mobile Phones
7–9
Assembly Parts of NHK–4AX
ITEM Q’TY CODE DESCRIPTION VALUE, TYPE
1 9450270 A cover OD 23087
1 9450736 A cover DMC00144–01 (Sapura)
1 9450506 A cover (Green) 4C 25080 (E–PLUS)
1 9450507 A cover (Black) 4C 25104 (E–PLUS)
2 9457080 Window 3C 23299
2 9457098 Window 3C 23819 (E–PLUS)
5 9790047 Sidekeymat 4D 22780
7 9790195 Keypad DMC00168
8 9510298 A shield 1D 24197 B
9 9510299 B shield 1D 24198 B
10 9380115 Type label (print 4P 25054) Nokia 2142
10 9380115 Type label (print 4P 26063) (N2142 Sapura)
10 9350115 Type label (print 4D 21663) (E–PLUS)
11 9457112 Connector cover DMD00187
12 6 6291662 PT screw 1.8x8 FeZn TX6
13 9450434 B cover 1D 24212
14 6 6290060 PT screw M2x5–BT ZNB TORX6
15 9450230 SIM cover 3D 23018
15 9450505 SIM cover 4C 25101 (E–PLUS)
16 0660095 Antenna JTI/PCN 1710/1880 MHz 76 mm
17 9510286 Edge clip 4D 26101
T1 0200174 UIF module DU9
T2 0200515 System module GR9
7310366 Tape Polyethylene l = 10 cm
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NHK–4
06/97JR
Technical Documentation
Copyright Nokia Mobile Phones
Exploded View of NHK–4BX, –4PT (Nokia 2146)
7–10
TRANSCEIVER
NHK–4
06/97JR
Technical Documentation
Copyright Nokia Mobile Phones
7–11
Assembly Parts of NHK–4BX, –4PT
ITEM Q’TY CODE DESCRIPTION VALUE, TYPE
1 9450268 A cover 0D 23087
1 9457322 A cover (N2146 Mutiara)
2 9457258 Window 3C 25437
2 9457274 Window 4C 25825 (N2146 Wo.ph.)
3 9480079 Window gasket 4D 23182
4 9450267 Call indicator lens 3D 23090
5 9790047 Sidekeymat 4D 22780
7 9790196 Keypad DMC00169
8 9510298 A shield 1D 24197 B
9 9510299 B shield 1D 24198 B
10 9380115 Type label (print 4P 25055)
10 9380115 Type label (print 4P 26064) (N2146 Mutiara)
10 9380115 Type label (print 26062) (N2146 Worldphone)
10 9380115 Type label (print 4P 26269) (MO20)
11 9457112 Connector cover DMD01187
12 6 6291662 PT screw 1.8x8 FeZn TX6
13 9450434 B cover 1D 24212
13 9450231 B cover 1D 23017 (Worldphone)
14 6 6290060 PT screw M2x5–BT ZNB TORX6
15 9450230 SIM cover 3D 23018
16 0660095 Antenna JTI/PCN 1710/1880 MHz 76 mm
17 9510286 Edge clip 4D 26101
T1 0200174 UIF module DU9
T2 0200515 System module GR9
7310366 Tape Polyethylene l = 10 cm
TRANSCEIVER
NHK–4
06/97JR
Technical Documentation
7–12
Copyright Nokia Mobile Phones
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