Motorola Dp3400 3401 3600 3601 Mototrbo Basic 6866574d29 E Manual

Disassembly/Reassembly Procedures: Radio Disassembly – Detailed 5-9
2.Use the TORX™ T6 screwdriver to remove the four screws holding the transmission board 
and interface board.
3. Lift up the interface and transmission board to remove.
Figure 5-7.  Transmission and Interface Board removal.
4. Release the catch from the reflow post by pushing away the shield clips.
5. Remove the shield clip by  releasing the hook from the slot at the top shield.
Figure 5-8.  Shield Clip removal.
Screws
Transmission Board...

5-10Disassembly/Reassembly Procedures: Radio Disassembly – Detailed
6.Release all the tabs from the catches.
7. Remove O-ring and battery contact seal.
Figure 5-9.  O-ring and Battery Contact Seal removal.
Main O-ring
Catches Catches
Battery Contact Seal
Secondary O-ring
Chassis Well
Notches Notches 

Disassembly/Reassembly Procedures: Radio Disassembly – Detailed 5-11
5.6.3 Speaker Disassembly
1.Remove the screws using  the TORX™ T6 screwdriver.
2. Remove the speaker retainer and subsequently the speaker.
Figure 5-10.  Speaker removal.
Screws
Speaker Retainer Speaker 

5-12Disassembly/Reassembly Procedures: Radio Reassembly – Detailed
5.7 Radio Reassembly – Detailed
5.7.1 Speaker Reassembly
1.Place the speaker onto th e front cover with the orientation tab aligned with the orientation slot 
on the front cover.
2. Place speaker retainer in the correct orientation.
3. Fasten the screws using  TORX™ T6 screwdriver.
Figure 5-11.  Speaker reassembly (Display Model).
Adhere strictly to ALL reassembly pr
ocedures to ensure radio immersibility. 
!
C a u t i o n
Screws
Speaker...

Disassembly/Reassembly Procedures: Radio Reassembly – Detailed 5-13
Figure 5-12.  Speaker reassembly (Non-Display Model).
Screws
Speaker Retainer
Speaker Orientation Tab
Speaker Orientation Slot
Speaker Retainer
Orientation Tab 

5-14Disassembly/Reassembly Procedures: Radio Reassembly – Detailed
5.7.2 Chassis Reassembly
1.Fit the battery contact seal onto the battery contact slot.
2. Refer to Figure 5-13 to fit the main O-ring  onto the chassis in the following sequence:
i. Ensure that the main O-ring is not twisted  and untangle it to its actual form if needed 
before performing reassembly.
ii. Secure  A1 into the top two notches on the chassis.
iii. Fit the top section of the main  O-ring by inserting it into the grooves at the...

Disassembly/Reassembly Procedures: Radio Reassembly – Detailed 5-15
3.Hook the shield clip on the top shield slot.
4. Push against the clip towards the board until catch is securely in place.
Figure 5-14.  Shield Clip reassembly.
5. Fit the secondary O-ring onto the antenna nut securely.
Figure 5-15.  Secondary O-ring reassembly.
Top ShieldShield Clip
Transmission Board
Secondary O-ring Main O-ring 

5-16Disassembly/Reassembly Procedures: Radio Reassembly – Detailed
6.Place the transmission board onto the chassis.
7. Put on the interface board by connecting the board-to-board connectors between the inter-
face and transmission board.
8. Fasten the screws using the TORX™ T6 screwdriver.
Figure 5-16.  Transmission and Interface Board reassembly.
9. Place the display retainer.
10. Fasten the screws using the TORX™ T6 screwdriver.
11. Snap the display module onto the display retainer catch.
Figure 5-17....

Disassembly/Reassembly Procedures: Radio Reassembly – Detailed 5-17
5.7.3 Chassis and Front Cover Reassembly
1.Slide in the volume and channel shafts into the top slot.
2. Connect the board-to-board connector between the keypad flex and the transmission board.
3. Insert top chassis tabs into recesses on front cover and apply some force until tabs are fully 
inserted.
4. Apply some grease at the bottom portion of the main O-ring.
5. Gently push the chassi s onto the front cover.
NOTE: Take necessary...

5-18Disassembly/Reassembly Procedures: Ensuring Radio Immersibility
6.A visual inspection into the two screw holes will  reveal blockage by a pinched O-ring in that 
area which requires the chassis to be re-inserted  into the front cover. See “Chassis and Front 
Cover Reassembly” on page 5-17.
Figure 5-19.  Chassis to Front Cover reassembly.
7. Fasten the screws using  TORX™ T6 screwdriver.
8. Reassemble knobs.
5.8 Ensuring Radio Immersibility
This section discusses radio imme rsibility concerns, tests,...