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NHK–1
12/97 OJ
Technical Documentation
Contents of Transceiver
Transceiver NHK–1 7–2
Introduction 7–2
Functional Description 7–2
Block Diagram 7–3
Interconnection Diagram 7–4
Assembly 7–5
Basic Construction 7–5
Electronics Module 7–5
UIF Module 7–5
A –cover 7–5
B –cover 7–5
Window 7–5
Antenna 7–6
Battery Pack 7–6
Exploded View of NHK–1XN 7–8
Assembly Parts of NHK–1XNCode: 0260297 7–9
Exploded View of NHK–1XA 7–10
Assembly Parts of NHK–1XACode: 0260295 7–11
Exploded View of NHK–1XB 7–12
Assembly Parts of NHK–1XB Code: 0260296 7–13
7–1
Copyright Nokia Mobile Phones
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TRANSCEIVER
NHK–1
Transceiver NHK–1
Related Documentation
Introduction
The NHK–1 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.
12/97 OJ
Technical Documentation
6E 0260297 Mechanics of NHK–1XN
6E 0260295 Mechanics of NHK–1XA
6E 0260296 Mechanics of NHK–1XB
6E 0260324 Mechanics of NHK–1EA
7–2
Copyright Nokia Mobile Phones
The plug–in SIM (Subscriber Identity Module) card reader is located inside the
phone.
Functional Description
The transceiver electronics consist of the Radio Module (System + RF blocks)
and the UI Module. The UI Module is connected to the Radio Module with a
connector. System blocks and RF blocks are interconnected with PCB wiring.
The transceiver is connected to accessories via a bottom system connector
with charging and accessory control.
The System blocks provide the MCU and DSP environments, Logic control IC
(EDSA), memories, audio processing and RF control hardware (RFI). On board
power supply circuitry delivers operating voltages for both System and RF
blocks.
The general purpose microcontroller, Hitachi H8, communicates with DSP, memories and logic control IC (EDSA) with 8 bit data bus.
The RF block is designed for a handportable phone which operates in the PCN
system. The purpose of the RF block is to receive and demodulate the radio
frequency signal from the base station and to transmit a modulated RF signal to
the base station.
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Block Diagram
DUPLEX
FILTER
RX
RX
SYNTE
SYNTE
TX
TX
IF 13 M
Clk 26 M
AFC
TXI, TXQ
TXC
UIF
SYSTEM
RFI
Clk 13 M
ASIC
Clk 26 M
EDSA
SIM
MCU
DSP
DBUS
M2BUS
AUDIO
TRANSCEIVER
12/97 OJ
Technical Documentation
Copyright Nokia Mobile Phones
RF BLOCK
RF CONTROL
SYSTEM BLOCK
Clk 512 k, Clk 8 k
NHK–1
7–3
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NHK–1
12/97 OJ
Technical Documentation
Interconnection Diagram
SIM Display
524
2
MIC
UI – MODULE
7–4
Copyright Nokia Mobile Phones
2
EARPIECE
2
BUZZER
RADIO – MODULE
16 2+2 2
SYSTEM
CONNECTOR
30
4
BATTERY
CHARGER ANTENNA
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NHK–1
Assembly
Basic Construction
There are 7 basic parts:
– electronics module (radio module + shields)
– UIF module (flex)
– A cover with key mats
– B cover
– window
– antenna
– battery pack
Electronics Module
12/97 OJ
Technical Documentation
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Copyright Nokia Mobile Phones
The electronics module includes a 2 sided (components) pcb and 2 shielding
covers (metallized plastic and moulded magnesium shields). Screws (2 pcs)
and snaps are used for fixing the screens together.
UIF Module
The UIF module contains the following parts: mic with rubber cushion, earpiece
with seals, buzzer, display, display driver, light guide, SIM reader, metal dome
keyboard, illumination LEDs, silicone key mats and connections to the system
module.
There are two versions of UIF modules (style 1 and style 2).
A –cover
The A –cover (front cover) is used for differentiating between product versions.
There are three versions of the A –cover.
B –cover
The B –cover (back cover) includes fittings for the battery pack, the SIM cover
and attachments to B –shield.
Window
The window is used for protection of the LCD. The window is assembled with
adhesive to the A –cover.
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NHK–1
Antenna
External 5/8 wave antenna with helix on top. The antenna is installed to an insert in the A –cover. The connection to the electronics module is made with a
clip on the PCB.
Battery Pack
There are three different sizes (prismatic, 4/5AA and Lithium cell) and five different capacities of batteries.
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Technical Documentation
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NHK–1
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Technical Documentation
Exploded View of NHK–1XN
7–8
Copyright Nokia Mobile Phones
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Copyright Nokia Mobile Phones
7–9
Assembly Parts of NHK–1XN Code: 0260297
ITEM Q’TY CODE DESCRIPTION VALUE, TYPE
1 9450269 A –cover 1D 23085 (Nokia 2140)
2 9457079 Window 3C 23086
3 9480079 Window gasket 4D 23182
4 9450266 Call indicator lens 3D 23082
5 9790055 Sidekeymat 3D 22995
6 9790054 Power keymat 4C 23347
7 9790058 Keypad 3C 23377
8 9460092 A –shield 1D 22958
9 9537024 B –shield 1D 22959
10 9380115 Type label (print Finland 4D 23813)
10 9380115 Type label (print Germany 4D 23833) (Nokia 2140)
11 2 6297726 PT screw 1.5x6 FeZn TX6 cyl.
12 6 6290041 PT screw 1.8–0.8x8 TX6
13 9450434 B –cover 1D 24212
14 2 6290060 PT screw M2x5–BT ZNB TORX6
15 9450230 SIM –cover 3D 23018
9457112 Connector cover DMD01187
16 0660052 Antenna retractable PCN 3D 23411
17 9510329 Side Clip v.1
9510338 Side clip v.2
18 9510339 Antenna side clip v.1
9510340 Antenna side clip v.2
T1 0200173 UIF module DU8
T2 0200172 System module DS9
6291666 PT screw (for system connector) 1.8x5 FeZn TX6
9480039 Mic seal 4D 22415
(Nokia 2140)
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NHK–1
12/97 OJ
Technical Documentation
Exploded View of NHK–1XA
7–10
Copyright Nokia Mobile Phones
17
18
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Technical Documentation
Copyright Nokia Mobile Phones
7–11
Assembly Parts of NHK–1XA, NHK–1NA, NHK–1EA, NHK–1HA,
NHK–1XP
ITEM Q’TY CODE DESCRIPTION VALUE, TYPE
1 9450270 A –cover (Nokia 2142) 2C 24119
1 9450440 A –cover (XP) 2C 24437
1 9457157 A –cover (XA) 2C 24570
1 9457506 A –cover (EA green) 2C 25080
1 9457507 A –cover (EA black) 2C 25104
1 9450476 A –cover (HA) 2C 24119
2 9457137 Window (HA) 3C 23187
2 9450438 Window (XP) 3C 24351
2 9457084 Window (XA) 3C 23419
2 9457084 Window (XA) 3C 23419
2 9457098 Window (EA) 3C 23819
2 9457080 Window 3C 23299
3 9480079 Window gasket 4D 23182
4 9450219 Call indicator lens 3D 22931
5 9790047 Sidekeymat 4D 22780
6,7 9790080 Keypad 4C 23793
8 9460092 A –shield 1D 22958
9 9537024 B –shield 1D 22959
10 9380115 Continuous sheet 4D 21663
10 9380115 Type label (print Finland 4D 25729)
(Nokia 2142)
10 9380115 Type label (print Finland 4D 23814) (Orange)
10 9380115 Type label (print Germany 4D 25770) (Nokia 2142)
10 9380115 Type label (print Finland 4D 25022) (Eplus)
10 9380115 Type label (print Germany 4D 24799) (Eplus)
10 9380115 Type label (print Finland 4D 24756) (Philips)
10 9380115 Type label (print Germany 4D 24804) (Philips)
10 9380115 Type label (print Finland 4D 25729) (Nokia 2142)
10 9380115 Type label (print Germany 4D 25770) (Nokia 2142)
11 2 6297726 PT screw 1.5x6 FeZn TX6
12 6 6290041 PT screw 1.8–0.8x8 FeZn TX6
13 9450231 B –cover (EA, XA, HA) 1D 23017
13 9450434 B –cover 1D 24212
14 2 6290060 PT screw M2x5–BT ZNB TORX6
15 9450230 SIM –cover 3D 23018
15 9450505 SIM–cover (EA) 3D 25101
16 0660052 Antenna retractable PCN 3D 23411
17 9510329 Side Clip v.1
9510338 Side clip v.2
18 9510339 Antenna side clip v.1
9510340 Antenna side clip v.2
T1 0200174 UIF module DU9
T2 0200172 System module DS9
(Nokia 2142)
(Nokia 2142)
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NHK–1
12/97 OJ
Technical Documentation
Exploded View of NHK–1XB
7–12
Copyright Nokia Mobile Phones
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NHK–1
12/97 OJ
Technical Documentation
Copyright Nokia Mobile Phones
7–13
Assembly Parts of NHK–1XB, NHK–1NB
ITEM Q’TY CODE DESCRIPTION VALUE, TYPE
1 9450268 A –cover 0D 23087
2 9457078 Window 3C 23088 (Technophone 885)
2 9457175 Window 4C 24829 (Worldphone)
2 9457235 Window 4C 25273 (Nokia 2146)
3 9480079 Window gasket 4D 23182
4 9450267 Call indicator lens 3D 23090
5 9790047 Sidekeymat 4D 22780
7 9790060 Keypad 3C 23415
8 9460092 A –shield 1D 22958
9 9537024 B –shield 1D 22959
10 9380115 Type label (print Finland 4D 25728)
10 9380115 Type label (print Finland 4D 23918) (Technophone 885)
10 9380115 Type label (print Germany 4D 24798) (Technophone 885)
10 9380115 Type label (print Finland 4D 24687) (Worldphone)
10 9380115 Type label (print Germany 4D 24803) (Worldphone)
10 9380115 Type label (print Finland 4D 25728) (Nokia 2146)
11 2 6297726 PT screw 1.5x6 FeZn TX6
12 6 6290041 PT screw 1.8–0.8x8 TX6
13 9450231 B –cover 1D 23017
13 9450434 B –cover 1D 24212
14 2 6290060 PT screw M2x5–BT ZNB TORX6
15 9450230 SIM –cover 3D 23018
16 0660055 Antenna PCN
16 0660052 Retractable antenna PCN (Worldphone) (Nokia 2146)
17 9510329 Side Clip v.1
9510338 Side clip v.2
18 9510339 Antenna side clip v.1
9510340 Antenna side clip v.2
T1 0200174 UIF module DU9
T2 0200172 System module DS9
6291666 PT screw (for system connector) 1.8x5 FeZn TX6
9480039 Mic seal 4D 22415
(Nokia 2146)
(Nokia 2146)
(Technophone 885)
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