PAMS Technical Documentation NHM-8NX Series Transceivers Assembly & Disassembly Instructions Issue 1 05/02 ãNokia Corporation
NHM-8NX Assembly & Disassembly Instructions PAMS Technical Documentation Table of Contents Page No Disassembling the NHM-8NX Transceiver ................................................................... 3 Preparation for Disassembly ........................................................................................3 Disassembly Tools .................................................................................................... 3 ESD Protection.................................................
PAMS Technical Documentation NHM-8NX Assembly & Disassembly Instructions Disassembling the NHM-8NX Transceiver Preparation for Disassembly Disassembly Tools Shown left to right: Torque-limiting screwdriver (torque set at 22N-cm), fiberglass soldering aid, and T6 Torx+ driver. ESD Protection Some form of ESD protection should be used when handling the PWB and other electronic components. The photo above shows a wrist strap, which can be grounded to a bench.
NHM-8NX Assembly & Disassembly Instructions PAMS Technical Documentation 1. Remove B-cover 2 1 3 1 Press and hold release button. 2 With other hand place thumb on logo badge and push B-cover in the direction of arrow 2. 3 Once B-cover is pushed forward lift off to remove. 2. Remove Battery Grab with fingertip and nail and pull.
NHM-8NX Assembly & Disassembly Instructions PAMS Technical Documentation 3. Remove SIM Card 1 2 1 Press plastic spring down 2 Place thumb from the other hand on SIM Card. Press and slide the SIM Card in the direction of arrow 2. 4. Remove A-cover Place thumb under the edge of the A-cover and fingers on top and pull gently until snaps deactivates.
NHM-8NX Assembly & Disassembly Instructions PAMS Technical Documentation 5. Remove screws (Torx #6) 6. Remove Lightguide Assembly Use screwdriver size 2.50 - 3.50 mm. PWB 1 2 3 Bottom Connector Between PWB and Bottom connector. Be careful not to damage the bottom connector.
NHM-8NX Assembly & Disassembly Instructions PAMS Technical Documentation 6.1 Remove Metal frame & Earpiece 1b 1a 2 3 Use screwdriver size 2.50 – 3.50 mm. 1 Turn screwdriver at snaps only on one side. 2 When removing the Metal frame, be careful not to damage the 4 springs in the corners. 3 Remove Earpiece.
NHM-8NX Assembly & Disassembly Instructions PAMS Technical Documentation 7. Remove PWB Assembly LED Remove PWB assembly and place PWB on ESD table with LED upwards. Note: Treat LEDs with care - do not bend! 7.1 Remove Shielding Lids Remove Shielding Lids.
PAMS Technical Documentation NHM-8NX Assembly & Disassembly Instructions Do not re-use shielding lid once it is removed, hence SCRAP the removed lids. When working with PWB, always use Solder Jig. 8.
NHM-8NX Assembly & Disassembly Instructions 6 7 PAMS Technical Documentation Bottom connector Release spring 8.1 Remove SALT Speaker Use screwdriver size 2.50 – 3.50 mm. Remove SALT Speaker by turning the screwdriver. 8.2 Remove SIM Support SIM Support can be released by pressing downwards at one of the edges.
PAMS Technical Documentation NHM-8NX Assembly & Disassembly Instructions 8.3 Remove Release spring 1a 1b 2 1 Gently put screwdriver down at release spring interface and release the sping.
NHM-8NX Assembly & Disassembly Instructions PAMS Technical Documentation Assembling the NHM-8NX Transceiver Exploded NHM-8NX Assembly I001 I002 I003 I004 I018 I019 I020 I005 I006 I007 I021 I008 I009 I010 I011 I012 I013 I014 I015 I016 I017 Page 12 ãNokia Corporation Issue 1 05/02
PAMS Technical Documentation 1. Mount components in D-cover 1 2 NHM-8NX Assembly & Disassembly Instructions 3 4 5 6 7 The following components are mountable: 1 2 3 4 5 6 7 Power key Battery connector SIM Card support Vibra assembly SALT Speaker Bottom connector Release spring Note: Ensure that all components are placed correctly.
NHM-8NX Assembly & Disassembly Instructions PAMS Technical Documentation 1.1 Mount Release Spring 2 1 1.
NHM-8NX Assembly & Disassembly Instructions PAMS Technical Documentation When working with PWB, always use the Solder Jig (MJS-67). Do not reuse the old lids. 2. Mount PWB on D-cover Guiding hole Guiding hole Guiding pin Guiding pin Use pins for guiding. 3. Mount Earpiece and Metal frame 2 1 3 1 Mount the Earpiece in Lightguide. 2 Place Metal frame on Lightguide.
NHM-8NX Assembly & Disassembly Instructions PAMS Technical Documentation ner. 3 Push the Metal frame down (at the arrows) until it snaps on. 4. Mount Domesheet When mounting the domesheet use the two holes for guiding. 5. Mount Display Assembly on D-cover 1 2 1 Page 16 Place the Display Assembly in the D-cover.
NHM-8NX Assembly & Disassembly Instructions PAMS Technical Documentation 2 Push the Display Assembly down (at the arrows) until it snaps on. 6. Mount screws (Torx #6) 4 1 3 5 2 6 Fastening the screws: Use a torx #6 screwdriver to fasten the screws in the order shown in the diagram. Max torque 28Ncm at 500-600RPM. 7. Mount Keymat and A-cover Assembly Place keymat.
NHM-8NX Assembly & Disassembly Instructions PAMS Technical Documentation Push down the A-cover until it snaps on. 8. Mount SIM Card Slide the SIM Card into place. 9. Mount Battery Slide the battery under the hooks in the D-cover.
NHM-8NX Assembly & Disassembly Instructions PAMS Technical Documentation 10. Mount B-cover Assembly 1 2 1 Place B-cover assembly on D-cover. 2 Push the B-cover in dirrection of arrow until it snaps on.
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