BATTERY, ACCESSORY, AND DISASSEMBLY INFORMATION
2-6
2.4.3 REMOVING UI (USER INTERFACE) BOARD
1. Separate the front cover and chassis as described in Section 2.4.1. The UI board is located inside the front cover
as shown below.
2. Unlock the three flex circuits shown above by sliding the tab on each connector outward. Carefully slide the flex
circuits out of the connectors, taking care to minimize bending which could crack the traces.
3. Remove the two screws shown above. If required, also unsolder the two speaker wires.
4. Carefully lift the bottom end of the UI board upward (guide the microphone out of its cavity). Then slide the UI
board out of the radio.
5. When reinstalling the UI board, the display assembly on the bottom of the board must slide into the area above
the keypad (see following illustration). If the UI board does not lie flat against the keypad after it is installed, the
display is probably hanging up on the keypad. Do not force it in place. Reorient the keypad and UI board as
required until the display slides into place. Also make sure that the optic fiber bundle slides under the boss on
the switch assembly, and the microphone is properly positioned back in its cavity.
Unlock
Remove
Screws
Unsolder
Wires
Flex Circuits
Microphone
UI Board
Display Area
Keypad
Summary of Contents for 5100 Series
Page 85: ...8 9 Version C Board see Section 1 13 VHF RF BOARD VER C LAYOUT ...
Page 87: ...8 11 VHF RF BOARD SCHEMATIC VER B PAGE 2 OF 3 ...
Page 88: ...8 12 VHF RF BOARD SCHEMATIC VER B PAGE 3 OF 3 ...
Page 95: ...8 19 BOTTOM VIEW TOP VIEW Version C Board see Section 1 13 UHF RF BOARD VER C LAYOUT ...
Page 105: ...8 29 BOTTOM VIEW TOP VIEW 700 800 MHZ RF BOARD VER C LAYOUT Version C Board see Section 1 13 ...
Page 112: ...8 36 SEM Module 5500 120 LOGIC BOARD VER C SCHEMATIC PAGE 5 OF 11 ...
Page 113: ...8 37 Analog Switch 5500 120 LOGIC BOARD VER C SCHEMATIC PAGE 6 OF 11 ...
Page 118: ...8 42 5500 120 LOGIC BOARD VER C LAYOUT BOTTOM VIEW TOP VIEW Version C Board see Section 1 13 ...
Page 143: ...8 67 5500 420 USER INTERFACE BOARD VER C TOP VIEW Version C Board see Section 1 13 ...
Page 144: ...8 68 5500 420 USER INTERFACE BOARD VER C BOTTOM VIEW ...
Page 148: ...8 72 5100 410 USER INTERFACE BOARD VER A BOTTOM VIEW Version w o encryption module ...
Page 152: ...8 76 5100 450 USER INTERFACE BOARD VER B BOTTOM VIEW Version with EFJ SEM ...
Page 156: ...8 80 5100 460 USER INTERFACE BOARD VER B BOTTOM VIEW Version with Motorola UCM ...
Page 172: ...9 15 OBSOLETE VERSION 5100 410 USER INTERFACE BOARD VER A BOTTOM VIEW Revision 6 Board ...
Page 173: ...Part Number 001 5100 0017CD 12 04hph Printed in U S A ...