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6268
Nokia 6268 Manuals
Manuals and User Guides for Nokia 6268. We have
5
Nokia 6268 manuals available for free PDF download: Rf Description And Troubleshooting, Baseband Description And Troubleshooting, Antenna Description And Troubleshooting, Disassembly, Reassembly
Nokia 6268 Rf Description And Troubleshooting (84 pages)
Mobile Terminals
Brand:
Nokia
| Category:
Cell Phone
| Size: 2.47 MB
Table of Contents
Table of Contents
2
Mobile Terminal Components
5
Preliminary RF Troubleshooting
7
Mobile Terminal Cannot Make a Call
7
Tx Power Low
7
Transmitter RF Troubleshooting
8
Transmitter Block Diagram
9
Transmitter Schematics
10
Transmitter Troubleshooting Setup
12
AMPS Tx Setup
12
Cell Tx Setup
15
PCS Setup
17
Transmitter RF Troubleshooting Procedures
19
Failed Test: Tx PA Detector
20
Tx Output Spectrum
21
Tx DC Test Points
22
Tx RF Test Points
23
DC Test Points
24
Receiver RF Troubleshooting
25
Receiver Block Diagram
26
Receiver Schematics
27
RF AGC Status
29
Turning on the Rx Path
30
Switching the Rx Gain States
32
Checking AMPS from RF to IQ
33
Checking CDMA CELL Receiver from RF to IQ
35
Checking CDMA PCS Receiver from RF to IQ
37
Receiver Diagnostic Signal Tracing
38
Receiver RF Test Points
39
Receiver if Test Points
40
Receiver DC Test Points
41
Receiver Logic Input Voltages
42
Rx Front-End Receiver Troubleshooting
43
Synthesizer Troubleshooting
45
Synthesizer Block Diagram
46
Synthesizer Schematics
47
Synthesizer Troubleshooting Setup
48
Incorrect PLL Frequencies
49
VCTCXO Troubleshooting
50
AFC Voltage Troubleshooting
52
VCTCXO Manual Tuning
53
UHF Synthesizer Schematic
55
UHF Synthesizer Troubleshooting
56
PCS UHF lo CH600 Typical Spectrum
57
Rho and UHF lo
57
CELL UHF lo CH384 Typical Spectrum
58
Rho and UHF lo
58
Rx VHF lo (Rx Back-End IC) Troubleshooting
60
Tx UHF lo Schematic
61
Tx UHF lo (Tx IC) Troubleshooting
62
UHF PCS Tx lo (3700 ~ 3819.90)/2Mhz Typical Spectrum
63
UHF CELL Tx lo (3296.16 ~ 3395.88)/4Mhz Typical Spectrum
64
GPS Troubleshooting
65
GPS RF Block Diagram
65
GPS RF Schematic
66
GPS Troubleshooting Setup
67
HW Self Test Failure
68
Oscillator Test Failure
68
CW (Mode 3) Test Failure
68
GPS DC Test Points
69
GPS RF Troubleshooting Setup
70
GPS RF Test Points
71
FM Radio Troubleshooting
72
FM Radio Schematic
72
FM Radio Testing - Pop-Porttm Headset and UHJ Headset
73
FM Radio Parts Layouts
74
FM Radio Test Points
75
Bluetooth Troubleshooting
76
Bluetooth Schematic
76
Bluetooth Troubleshooting
77
Test Setup 1
77
Test Setup 2
78
Test Setup 3
79
Test Setup 4
80
Test Setup 5
81
Bluetooth Troubleshooting Flowchart
82
Bluetooth DC and RF Test Points
83
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Nokia 6268 Baseband Description And Troubleshooting (60 pages)
Mobile Terminals
Brand:
Nokia
| Category:
Cell Phone
| Size: 2.68 MB
Table of Contents
Table of Contents
2
Introduction
5
Power up Sequence
6
Baseband/Rf Regulators
8
Baseband Regulators
8
Flash Programming
10
Flashing Tool
10
Flashing Troubleshooting
10
Flashing Phoenix Interface
12
Audio
13
How the Audio Works
13
Audio Troubleshooting
14
Audio Phoenix Interface
15
Camera
16
How the Camera Works
16
Camera Troubleshooting
16
Camera Phoenix Interface
18
FM Radio
19
How the FM Radio Works
19
FM Radio Test
19
FM Radio Troubleshooting
19
FM Radio Phoenix Interface
21
USB (Universal Serial Bus)
22
How the USB Interface Works
22
USB Troubleshooting
23
Infrared
25
How Infrared Works
25
Infrared Troubleshooting
25
Infrared Phoenix Interface
26
Display
27
How the Display Works
27
Display Troubleshooting
27
Display Backlight Troubleshooting
28
Display Phoenix Interface
30
Keypad Backlight
31
How the Keypad Backlight Works
31
Keypad Backlight Troubleshooting
31
Keypad Backlight Display Phoenix Interface
32
Slide Detect Circuit
33
How the Slide Detect Circuit Works
33
Slide Detect Circuit Troubleshooting
33
Gps
35
How the GPS Works
35
What Does the GPS BB Do
36
GPS Troubleshooting
36
GPS Phoenix Interface
38
UIM Card
39
How UIM Card Works
39
UIM Card Troubleshooting
39
UIM Card Phoenix Interface
42
Bluetooth
43
How the Bluetooth Works
43
Bluetooth Troubleshooting
44
Bluetooth Phoenix Interface
45
Mini-SD
46
Mini-SD Troubleshooting
46
System Connector
47
Accessory Detection
48
Battery Interface Circuit
49
Charging
50
Common Problems
51
No Communication During Flash
51
No Communication During Alignment
51
Failed Self Test/Calibrate
51
Mobile Terminal Not Powering up
51
Shut down after 32 Seconds
51
No Audio
52
Key Pads Malfunction
52
No LCD Display
52
Phoenix Tools
53
Reference
59
Signal References
59
Main Display Test Points
60
Nokia 6268 Antenna Description And Troubleshooting (26 pages)
Mobile Terminals
Brand:
Nokia
| Category:
Cell Phone
| Size: 1.24 MB
Table of Contents
Table of Contents
2
Introduction
3
Main CDMA Antenna
3
E-Cover Assembly/Cdma Antenna
3
Damaged CDMA Sticker or Bezel Assembly
5
Missing or Damaged CDMA Antenna Pogo Pins
5
Obstructed RF Feed and Ground Pads
5
Broken or Missing Matching Circuit
6
Damaged RF Switch
6
Auxiliary Antennas: GPS, BT and FM
7
Disassembly for Auxiliary Antenna Removal
7
GPS Antenna
10
Possible GPS Antenna System Failure Modes
10
BT Antenna
15
Possible BT Antenna System Failure Modes
15
FM Antenna
17
Possible FM Antenna System Failure Modes
17
Circuit Diagrams and Chip Locations for Auxiliary Antennas
19
UIM Card Holder
24
A-Cover Foil
24
Missing or Damaged Foil
25
Missing or Damaged GND Pogo Pins
25
HAC Coil
26
Missing or Damaged HAC Coil
26
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Nokia 6268 Disassembly (18 pages)
Brand:
Nokia
| Category:
Handhelds
| Size: 1.19 MB
Table of Contents
Table of Contents
2
Safety Information
3
ESD Protection
3
Disassembly Instructions
4
Place Protective Film on the A-Cover
4
Remove the Battery Cover
4
Remove the Antenna/E-Cover
5
Remove the Camera Gasket
5
Remove the Screws
6
Remove the A-Cover from the B-Cover
7
Remove the A-Cover Keymat
8
Remove the Mini SD Door
8
Remove the Screws
9
Remove the D-Cover from the C-Cover
9
Remove the PWB
10
Remove the Camera
10
Remove the Main Keymat
10
Keymat Removal ONLY
11
Remove the Main Flex Assembly
12
Remove the LCD Flex Cable and Assembly
13
Remove the Volume Key
14
Remove the Camera Key
15
Remove the IHF Assembly
15
Remove the BT Antenna
16
Remove the Camera Flash
16
Remove the DC Jack
17
Remove the Microphone
17
Nokia 6268 Reassembly (14 pages)
Mobile Terminals
Brand:
Nokia
| Category:
Cell Phone
| Size: 0.8 MB
Table of Contents
Table of Contents
2
Safety Information
3
ESD Protection
3
Reassembly Instructions
4
Insert the DC Jack
4
Insert the Camera Flash
4
Insert the BT Antenna
4
Insert the IHF Assembly
5
Insert the Camera Key and the Volume Key
5
Insert the LCD Flex Cable and Assembly
6
Insert the Main Flex Assembly
7
Add the Screws
8
Camera Installation
8
Attach the PWB and B/C Slide Assembly
9
Add the Screws
10
Connect the A-Cover and the B-Cover
10
Add the Camera Gasket
11
Attach the Antenna/E-Cover
12
Attach the Main Keymat
12
Insert the Battery and Attach the Battery Cover
13
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