Nokia NHM-8NX Series Manuals

Manuals and User Guides for Nokia NHM-8NX Series. We have 2 Nokia NHM-8NX Series manuals available for free PDF download: Troubleshooting Instructions, Assembly & Disassembly Instructions

Nokia NHM-8NX Series Troubleshooting Instructions

Nokia NHM-8NX Series Troubleshooting Instructions (62 pages)

PAMS Technical Documentation

Brand: Nokia | Category: Transceiver | Size: 1.64 MB

Table of Contents

Table of Contents
2
Transceiver Troubleshooting
4
- Troubleshooting Steps
  4
  - General Instructions
    4
Baseband Troubleshooting
5
RF Troubleshooting
18
- General Description of the RF Circuits
  18
- Receiver
  24
- General Instructions for GSM900 RX Troubleshooting
  24
- Fault Finding Chart for GSM900 Receiver
  26
- General Instructions for GSM1800 RX Troubleshooting
  27
- Fault Finding Chart for GSM1800 Receiver
  29
- Measurement Points in the Receiver
  31
- Transmitter
  32
- Synthesizer
  39
- Alignment
  47
  - NHM-8NX Manual Align with Phoenix
    47
- RX Calibration
  47
- RX Channel Select Filter
  49
- RX Band Filter Response
  50
- Tx Power Tuning
  51
  - TX Power Tuning GSM
    52
  - TX Power Tuning PCN
    55
- I/Q Tuning
  57
- RF Control
  59
- Call Testing
  60

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Nokia NHM-8NX Series Assembly & Disassembly Instructions

Nokia NHM-8NX Series Assembly & Disassembly Instructions (20 pages)

Transceivers

Brand: Nokia | Category: Cell Phone | Size: 3.07 MB

Table of Contents

Table of Contents
2
Disassembling the NHM-8NX Transceiver
3
- Preparation for Disassembly
  3
  - Disassembly Tools
    3
  - ESD Protection
    3
- Remove B-Cover
  4
- Remove Battery
  4
- Remove SIM Card
  5
- Remove A-Cover
  5
- Remove Screws (Torx #6)
  6
- Remove Lightguide Assembly
  6
  - Remove Metal Frame & Earpiece
    7
- Remove PWB Assembly
  8
  - Remove Shielding Lids
    8
- Remove Components from D-Cover Assembly
  9
  - Remove SALT Speaker
    10
  - Remove SIM Support
    10
  - Remove Release Spring
    11
Assembling the NHM-8NX Transceiver
12
- Exploded NHM-8NX Assembly
  12
- Mount Components in D-Cover
  13
  - Mount Release Spring
    14
  - Mount New Shielding Lids on PWB
    14
- Mount PWB on D-Cover
  15
- Mount Earpiece and Metal Frame
  15
- Mount Domesheet
  16
- Mount Display Assembly on D-Cover
  16
- Mount Screws (Torx #6)
  17
- Mount Keymat and A-Cover Assembly
  17
- Mount SIM Card
  18
- Mount Battery
  18
- Mount B-Cover Assembly
  19

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