Nokia Ringo Disassembly Instructions
PAMS Technical Documentation
NHX–4N
DISASSEMBLY &
TROUBLESHOOTING
INSTRUCTIONS
Original 01/98
Copyright 1998 Nokia Mobile Phones. All rights reserved.
Disassembly & Troubleshooting Instructions
PAMS
NHX–4N
Amendment
Number
Technical Documentation
AMENDMENT RECORD SHEET
Date Inserted By Comments
Page 2
Original, 01/98
PAMS
Disassembly & Troubleshooting Instructions
Technical Documentation
CONTENTS
Disassembly instructions Page 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Trobleshooting Page 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Troubleshooting Page 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Logic fault Page 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver fault Page 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmitter fault Page 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio fault Page 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Display or keyboard fault Page 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Call set–up fault Page 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NHX–4N
Page No
Original, 01/98
Page 3
Disassembly & Troubleshooting Instructions
PAMS
NHX–4N
Disassembly instructions
1) Remove the
antenna
2) Remove screw
covers (3 pcs) with
screwdriver
Technical Documentation
5) Disconnect:
battery connector (1),
microphone connector (2),
and earphone connector (3)
with tweezers
3) Remove back
cover screws (3 pcs)
4) Remove
back cover
6) Remove
battery
7) Remove
chassis screws
Page 4
Original, 01/98
PAMS
Disassembly & Troubleshooting Instructions
Technical Documentation
8) Remove
transceiver
module
NHX–4N
10) Lift display carefullly
Remove screws (3 pcs)
9) Turn around,
Loosen the light guide carefully
from both sides of the PCB with
flat headed tool
11) Chassis and module
can now be separated
Original, 01/98
Page 5
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