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Nokia Customer Care
RH-21 Series Transceivers
Disassembly/Assembly
Issue 2 07/2004 2004 Nokia Corporation. Page 1
Company Confidential
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RH-21 Company Confidential
Disassembly/Assembly Nokia Customer Care
Page 2 2004 Nokia Corporation. Issue 2 07/2004
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Company Confidential RH-21
Nokia Customer Care Disassembly/Assembly
Contents
Page No
ESD Protection ............................................................................................................5
Step-by-Step Disassembly Guide................................................................................... 5
Remove B-cover ..........................................................................................................5
Remove RF Plug ..........................................................................................................6
Remove A-cover ..........................................................................................................6
Remove screws ............................................................................................................6
Remove lightguide assembly .......................................................................................7
Remove metal frame and earpiece ...............................................................................7
Remove PWB assembly ..............................................................................................8
Remove shielding lids ..................................................................................................9
Remove components from D-cover assembly .............................................................9
SALT speaker.......................................................................................................... 10
Step-by-Step Assembly Guide ..................................................................................... 11
Mount components in D-cover ..................................................................................11
Mount shielding lids on PWB ...................................................................................12
Mount PWB on D-cover ............................................................................................12
Mount earpiece and metal frame ...............................................................................12
Mount domesheet .......................................................................................................13
Mount display assembly on D-cover .........................................................................13
Mount screws .............................................................................................................14
Mount keymat and A-cover assembly .......................................................................14
Insert RF Plug ............................................................................................................15
Place battery ...............................................................................................................16
Mount B-cover assembly ...........................................................................................16
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RH-21 Company Confidential
Disassembly/Assembly Nokia Customer Care
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Company Confidential RH-21
Nokia Customer Care Disassembly/Assembly
ESD Protection
Step-by-Step Disassembly Guide
The following diagrams may be helpful in explaining the correct sequence and technique
for disassembly of the RH-21 handsets.
Remove B-cover
1 Turn phone off
2 Remove the B-cover by pushing the button (indicated by arrow)
3 Lift the B-cover up as shown by the arrows.
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RH-21 Company Confidential
Disassembly/Assembly Nokia Customer Care
Remove RF Plug
Remove the RF Plug from RF connector opening in the antenna.
Remove A-cover
Place thumb under the edge of the A-cover and fingers on top of the A-cover, then pull
gently until it snaps. Once lifted, ensure that the keymat does not fall out of the A-cover.
Remove screws
Unscrew the six screws as indicated.
3
4
2
1
5
6
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Company Confidential RH-21
Nokia Customer Care Disassembly/Assembly
Remove lightguide assembly
Follow the steps indicated in the following diagram:
Remove metal frame and earpiece
Follow the numbered steps in the following diagram.
Note: 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 four springs in
the corners
3 Remove earpiece
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RH-21 Company Confidential
Disassembly/Assembly Nokia Customer Care
1b
1a
2
3
Remove PWB assembly
Lift the PWB as indicated in the following drawing. Then, place the PWB on ESD table
with LEDs on top.
LED
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Company Confidential RH-21
Nokia Customer Care Disassembly/Assembly
Remove shielding lids
Caution: Do not re-use shielding lid once it is removed.
When working with the PWB, always use a repair jig.
Remove components from D-cover assembly
The following components are removable:
1Power key
2 Battery connector
3 SALT speaker (see diagram)
4Vibra
5 Bottom connector
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RH-21 Company Confidential
Disassembly/Assembly Nokia Customer Care
SALT speaker
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Company Confidential RH-21
Nokia Customer Care Disassembly/Assembly
Step-by-Step Assembly Guide
Mount components in D-cover
1Power key
2 Battery connector
3SALT speaker
4Vibra
5 Bottom connector
Note: Ensure that all components are placed correctly.
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RH-21 Company Confidential
Disassembly/Assembly Nokia Customer Care
Mount shielding lids on PWB
Mount PWB on D-cover
Mount earpiece and metal frame
1 Mount the earpiece in the lightguide
2 Place metal frame on lightguide — be careful about the springs in each of the
four corners
3 Push the metal frame down (indicated with arrows in drawing below) until it
snaps on
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Company Confidential RH-21
Nokia Customer Care Disassembly/Assembly
Mount domesheet
When mounting the domesheet, use the two holes indicated as guide.
Mount display assembly on D-cover
1 Place the display assembly in the D-cover
2 Push the display assembly down (indicated by arrows in the drawing below) until
it snaps on
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RH-21 Company Confidential
Disassembly/Assembly Nokia Customer Care
Mount screws
Fasten the screws in the sequence indicated in the following diagram. Be sure to use a
torx #6 screwdriver.
Note: Max torque 28Ncm at 500-600RPM.
4
3
Mount keymat and A-cover assembly
2
1
5
6
1 Place keymat
2 Push down the A-cover until it snaps on
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Company Confidential RH-21
Nokia Customer Care Disassembly/Assembly
Insert RF Plug
Insert RF Plug into RF connector opening in the antenna.
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RH-21 Company Confidential
Disassembly/Assembly Nokia Customer Care
Place battery
Slide battery under the hooks in the D-cover.
Mount B-cover assembly
1 Place B-cover assembly on D-cover
2 Push the B-cover in the direction indicated by the arrow in drawing below until
the B-cover snaps on
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