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 Interface Board
Top Shield
O-ring Chassis
Shield Clip
Reflow Post 
						

							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. 
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C a u t i o n
Screws
Speaker Retainer
Orientation Tab
Speaker Retainer Speaker Orientation Tab
Speaker Orientation Slot 
						

							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 top two cor-
ners formed by the black retainers.
iv. Insert B1  into the top two catches on the chassis.
v. Fit the bottom section of the main O-ring around the bottom two corners of the chassis.
vi. Secure  A2 into the remaining four notches on the chassis.
vii. Insert  C into the chassis well and push to th e bottom of the well to secure it.
viii. Insert  B2 into the bottom two catches on the chassis.
NOTE: To maintain radio immersibility,  it is recommended that the main  O-ring be replaced although 
the existing one may appear undamaged. Be sure  to replace the battery contact seal also if 
necessary.
Figure 5-13.  O-ring and Battery Contact Seal reassembly.
A1 A2
C
B1
B2
CatchesMain O-ring
Catches
Battery Contact Seal
Secondary O-ring
Chassis Well
Notches Notches 
						

							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.  LCD Retainer and LCD Module reassembly.
Screws
Transmission Board Interface Board
Main O-ring Top Shield
Chassis
Display Module
Screws Display Retainer
Board-to-Board Connector 
						

							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 precautions while performing step 5 of See Section 5.7.3: Chassis and Front 
Cover Reassembly to prevent visible outward pinches of the main O-ring.
Figure 5-18.  Back Cover Kit reassembly.
Vo l u m e  S h a ftChannel Shaft
Chassis
Apply grease
at the bottom
portion of the
O-ring
Ta b s 
						

							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, and disassembly and reassembly of the  
series radios.
5.8.1 Servicing
The  series radios shipped from the Motorola factory have passed vacuum testing and should be 
capable of restoring the watertight integrity of the radio.
5.8.2 Accidental Immersion
If the radio is accidentally dropped in water, shake the radio to remove the excess water from the 
speaker grille and microph one port area before operating; otherwise, the sound may be distorted 
until the water has evaporated, or is dislodged from these areas. If the antenna needs to be replaced, ensu
re that only MOTOTRBO antennas are 
used. Neglecting this would damage your radio. Refer to separate Accessory 
List Leaflet 6866574D04 for a  list of available antennas.
CAUTION: It is strongly recommended that the main tenance of the radio be deferred to qualified ser-
vice personnel and service shops. This is of paramount importance as irreparable damage to the radio 
can result from service by unauthorized persons.  If disassembly is necessary, unauthorized attempts 
to repair the radio may void any existing warranties or extended performance agreements with 
Motorola. It is also recommended that immersibilit y be checked annually by qualified service person-
nel/workshop that is authorized by Motorola.
Screw Holes
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C a u t i o n