Specifications

LBI-33057
4
PROGRAMMING
• IBM PC Compatible Computer
• TQ-3364 EDACS Programming Manual
and Software (includes 5
1/4" and 3 1/2" disks)
• TQ-3370 PC Programming Adapter
(Serial Adapter Box and PC-
to-Adapter Box Interface
Cable)
• TQ-3311 Radio Programming Cable
(Adapter Box-to-Radio Cable)
FRONT COVER TEST
ACCESSORY KIT
A Front Cover Test Accessory Kit is available for
exercising and troubleshooting the circuits in the front
cover. Connection to an IBM PC or compatible computer
(parallel printer port) allows all of the circuits in the
front cover, less Control Board, to be exercised via the
PC computer.
An adapter and extender board in the kit allows the
Control Board to be extended out of the case for trouble-
shooting access. See the TEST EQUIPMENT section of
this manual for a breakdown of the kit.
The LCD Board and Keypad Flex can be exercised
without the Control Board while still in the radio's case.
All of the switches and the logic circuitry can be tested
via the PC connection. Status of the switches is displayed
on the PC. The LCD Board can be fully exercised by
sending it various patterns to display from the PC.
LCD/Keypad backlighting can also be toggled on and off.
Test points are provided for the volume control and mi-
crophone audio. A resistor network on the Front Cover
Test Cable provides a dc bias to the mic in the absence of
the Control Board's bias.
DISASSEMBLY / REASSEMBLY
In the event internal service is required, disassemble
the radio in accordance with the following outlined
steps. See Figures 1 - 5.
Reassemble the unit by following the steps in reverse
order. Observe screw lengths and do not over tighten the
screws when reassembling the unit. Torque specifica-
tions are listed in Table 1.
Always remove the battery pack before
disassembling the unit to avoid blowing the fuse
or causing other component damage.
This radio contains CMOS ICs that can be dam-
aged by static electricity. Observe static
handling precautions.
CAUTION
Table 1 - Torque Specifications
LOCATION LB-IN.
Rear/Front Cover Assembly
Screws
5.0
Rear Cover Assembly
Antenna Insert
UDC RF Connector
RF Board/Eggcrate Screws
PA Support Screws
Antenna Switch (SWI) Screw
10.0
10.0
4.0
10.0
1.5
Front Cover Assembly
Knob Set Screws (earlier)
Knob Set Screws (later)
Group/Channel and Volume Nuts
UDC Ground Screw
All M1.6 and M2 Screws
3.0
5.0
8.0
4.0
3.0
TOOLS REQUIRED
• TORX

T6 Driver
• M1 .5 Hex Driver or Wrench
• Needle-Nose Pliers
• Small Flat-Blade Screwdriver
• Spanner Wrench (top antenna jack)
• Spanner Wrench (UDC antenna jack)
Spanner Wrench (volume control and group/channel
switch)