Motorola Two Way Portable Radio Ht1000 Jt1000 Mt2000 Mts2000 Mtx Series 6881200c75 B Manual

49 reflow, and may inadvertently move. Be careful when performing the 
following procedure.
Refer to Figure 17 for RF PA nomenclature.
To Remove the RF PA, add flux to the leads of the device, and use a soldering iron and pair of 
tweezers to heat and lift each lead free and clear of its respective solder 
pad on the circuit board. Use the R-1319 Rework Station and the heat- 
focus head designed especially for removal of the RF PA. Attach the 
heat-focus head to the chimney heater. Adjust the temperature...

50the heater and begin the reflow cycle. Heating time should not be less 
than two minutes.
Once the RF PA reflows, raise the heat-focus head and wait 
approximately two minute for the part to cool. Remove the circuit 
board and inspect the solder joint between the slab and the ground 
plane. No cleaning should be necessary. Use the soldering iron and add 
solder to each of the RF PA leads and associated pads. Inspect the lead/
pad bond for opens and solder shorts. 

51
Exploded Views
8
There are several models in this family of radios: HT 1000, JT 1000, 
MT 2000, MTS 2000, and MTX Series radios.The exploded view diagrams 
in this section illustrate this family of radios by capturing them into one 
of four categories: 
basic radios
top-display radios
keypad radios
uni-board radios 
Determine which category describes your unit, and use the appropriate 
exploded view to help identify components with description and
Motorola part number.  

52
Basic Radios and Basic Radios with 
Option Mate Optional Front Cover
ITEM
NO.MOTOROLA
PA R T  N O .DESCRIPTION
1 4505896U01 LEVER, PTT
2 3205902U01 SEAL, PTT, and ACTUATOR for S404, S405, 
S406, and S408
3A
3B1505627V05
or 1505627V03
 1505637V06
or 1505637V07COVER, Front
COVER, Front; OptionMate
COVER, Front; DTMF
COVER, Front; DTMF OptionMate
4 - - - - - - - - - - LABEL, Agency Approval; not field 
replaceable
5 3305183R55 LABEL, Motorola
6 3305183R56 LABEL, HT1000
7 3505535X02 FELT, Speaker
8 See...

53
Top-Display 
Radios
ITEM
NO.MOTOROLA
PA R T  N O .DESCRIPTION
1 4505896U01 LEVER, PTT
2 3205902U01 SEAL, PTT, and ACTUATOR for S404, S405, 
S406, and S408
3 1505627V04 COVER, Front
4 - - - - - - - - - LABEL, Agency Approval; not field replace-
able
5 3305183R55 LABEL, Motorola
6 3305183R70
or 3305183R71
or 3305183R94LABEL, MT 2000
LABEL, MTS 2000
LABEL, MTX
7 3505535X02 FELT, Speaker
8 See Note 1 SPEAKER (LS401)
9 0705470V01 BRACKET, Speaker Retainer
10 See Note 1 MICROPHONE (MK401)
11 1405330W02...

54
Keypad Radios
ITEM
NO.MOTOROLA 
PA R T  N O .DESCRIPTION
1 4505896U01 LEVER, PTT
2 3205902U01 SEAL, PTT, and ACTUATOR for S404, 
S405, S406, and S408
3A
3B1505637V04
1505637V05COVER, Front; Full Keypad
COVER, Front; Limited Keypad
4 - - - - - - - - - LABEL, Agency Approval; not field 
replaceable
5A 7505870U01 KEYPAD, 15-key
5B 7505870U02 KEYPAD, 6-key
6 5105238U83 MODULE, Display
7 3305183R55 LABEL, Motorola
8 3305183R70 LABEL, MT2000
or 3305183R71 LABEL, MTS2000
or 3305183R94 LABEL, MTX
or...

55
Uni-board Radios
ITEM
NO.MOTOROLA
PA R T  N O .DESCRIPTION
1 4505896U01 LEVER, PTT
2 3205902U01 SEAL, PTT, and ACTUATOR for S404, S405, 
S406, and S408
3 1505627V05 COVER, Front
4 - - - - - - - - - - LABEL, Agency Approval; not field 
replaceable
5 3305183R55 LABEL, Motorola
6 3305252X18 LABEL, MTXLS
7 3505535X02 FELT, Speaker
8 See Note 1 SPEAKER (LS401)
9 0705470V01 BRACKET, Speaker Retainer
10 See Note 1 MICROPHONE (MK401)
11 1405330W01 BOOT, Microphone
12 8405310W04 FLEX, Front Cover/Display
13...

56
Notes 

57
Component Location 
Diagrams, Parts Lists, and 
Schematic Diagrams
9
Introduction
GeneralTransceiver components and controller components reside on 
separate circuit boards. Refer to the model charts located in the front 
of this manual (prior to Section 1) to determine the controller board 
and transceiver board unique to your model radio. Then locate the 
appropriate transceiver board and controller board component 
location diagram, schematic diagram, and parts list located in this 
section of the...

58from the overall schematic. The following two notes are general and 
apply to all schematic and circuit board applications.
1. Unless otherwise stated, resistor values are in ohms (k = 1000), 
capacitor values are in picofarads (pF) or microfarads (µF), and 
inductor values are in microhenrys (µH) or nanohenrys (nH).
2. DC voltages are measured from point indicated to chassis ground 
using a high impedance (10 megohm) Motorola DC voltmeter or 
equivalent. Transmitter measurements should be made with a...