40
Figure 18 Securing the Flex Circuit Ribbon
Disassembly Instructions
1. Turn off the power supply to the unit. Turn off the radio.
2. Gently lift up the opening frame on the ZIF flex circuit connector
(located on the PCB), and slide out the flex extender.
3. Unplug the DB25 connector.
4. Eject the radio from the XTVA.
5. Remove the troubleshooting rear housing. Place the screws to one
side. DO NOT LOSE THEM!
6. Gently lift up the opening frame on the ZIF flex circuit connector
(located on the flex extender) and slide out the VA flex circuit ribbon.
7. Remove power, microphone, and speaker cables from the back
cover/PCB assembly.
8. Gently lift the PCB and replace PCB contacts underneath the
charge contacts. Be sure to fit the locating features on the PCB
contacts into their complementary features on the back housing.
Lower the PCB in place.
9. Remove the front cover from the chassis.
Note: If you wish to continue disassembling the chassis go to
the “Disassembly Procedure” (page 29) and start at step 8.
10. Lay the chassis upside down to the right of the back cover/PCB
assembly. Carefully grasp the free end of VA flex circuit ribbon
and insert it into the ZIF connector on the PCB. Secure the flex
circuit ribbon end by pushing down on the ZIF connector frame.
While performing the next step, make sure not to pull on
the flex circuit ribbon.
11. Rotate the chassis back into place on the back housing. Be careful
not to pinch the flex circuit ribbon.
12. Continue with steps 25 through 29 of the Reassembly Procedure.
Fig18
VA Front Cover
Troubleshooting
Rear Housing
ZIF
Frame
ZIF
Connector
!
C a u t i o n
Содержание Astro Dimetra MTP
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