Motorola Gtx2000 Lcs2000 68p02945c70 O Manual

							2-6 Basic MaintenanceThis Page is Intentionally Left Blank 
						

							Test Equipment, Service Aids, and Tools 3-1
3Test Equipment,
Service Aids, and Tools
3
Test EquipmentThe list in Table 3-1 includes all standard test equipment required for servicing
two-way mobile radios. Battery-operated test equipment is recommended when
available. The ÒCharacteristicsÓ column is included so that equivalent equipment
may be substituted; however, when no information is provided in this column, the
speciÞc Motorola model listed is either a unique item or no substitution is
recommended.
Table 3-1 Recommended Test Equipment
Model No. Description Characteristics Application
R2000 Series
with trunking optionCommunications
System AnalyzerFrequency/deviation meter and signal
generator for wide-range troubleshoot-
ing and alignment
R1053 Dual Trace
 Oscilloscope200 MHz bandwidth,
5 mV/cm -20 Mv/cmFor waveform measurements
FLUKE 8012 Digital Multimeter AC/DC voltage and current meter
T1013A Load resistor 0-1000MHz, 300 W For use with wattmeter
S1339A RF Millivolt Meter
10kHz to 1.2 GHz100µV to 3V rf RF level measurements
R1011B DC Power Supply 0-40Vdc, 30 Amps Bench supply for 13.8Vdc current lim-
ited 
						

							3-2 Test Equipment, Service Aids, and Tools
Field ProgrammingThe radio can be aligned and programmed in the Þeld. This requires speciÞc
equipment and special instructions. refer to the Radio Service Software UserÕs
Manual for complete Þeld programming information.
Table 3-2 Service Aids
PART No. DESCRIPTION APPLICATION
RLN4008B Radio Interface Box Enables communications between the radio and the compu-
terÕs serial communications adapter.
EPN4040A Power Supply Used to supply power to the RIB (240 VAC).
0180358A56 Power Supply Used to supply power to the RIB (220 VAC).
0180357A57 110V AC-to-DC Adapter Used to supply power to the RIB (110 VAC).
3080070N01 Combined Interface Cable Connects radio to RLN4008B RIB.
GKN6270A DC Power Cable for radio Interconnects radio to power supply.
3080369B72 Computer Interface Cable Connects the computerÕs serial communications adapter
(9 pin) to the RIB.
3080369B71 Computer Interface Cable Connects the computerÕs serial communications adapter
(25 pin) to the RIB.
RLN4438A Adapter 25 pin (F) to 9 pin (M) adapter, for use with 3080369B72 for
AT applications.
RVN4150 Radio Service Software (RSS) For GTX radio programming.
RVN4156 Radio Service Software (RSS) For LCS 2000 radio programming.
68P02945C70 Service Manual, 800MHz Provides detailed technical information for the radio.
68P02946C20 RSS UserÕs Guide Provides detailed instruction on RSS use.
RLN4460A Test Fixture For radio testing
3008566C12 Test Cable For connecting between the radio and RLN4460A. 
						

							 
Test Equipment, Service Aids, and Tools 3-3 
Service Tools
 
The following table lists the tools recommended for working on the radio; these 
are also available from Motorola. Note that the R-1070A workstation requires the 
use of a specific “heat focus head” for each of the components on which this item 
is used. Each of these heat focus heads must be ordered separately.  
Table 3-3 Service Tools  
PART No. DESCRIPTION APPLICATION 
0180381B45 110 VAC
          or
0180300E06 220 VACMBT250 Surface-mount/
through-hole repair     
stationTemperature-controlled, self-contained soldering/
desoldering repair station for installation and 
removal of surface-mounted devices.
8180369E97 Flux holder/applicator Allows for the proper amount of flux to be applied 
to pad grid arrays for repair.
1105139W02 30cc plastic syringe and flux 
pasteFor use with flux holder/applicator 8180369E97.
0180386A81 Miniature digital read-out 
soldering station (includes 
1/64” micropoint tip)
0180386A78 Illuminated magnifying 
glass with lens attachment
0180386A82 Anti-static grounding kit Used during all radio assembly and disassembly 
procedures
6684253C72 Straight prober
6680384A98 Brush
1010041A86 Solder (RMA type),
63/37, 0.020” diameter, 1 lb. 
spool
R-1070A 
(superseded by R1319A)Shields and surface-
mounted component - IC 
removal/rework stationRemoval of surface-mounted integrated circuits
R1319A 
(supersedes R-1070A)
6680332E82
6680332E83
6680332E84
6680333E28Surface-Mounted Device 
Rework Station
R1319A Reflow Nozzle
R1319A Reflow Nozzle
R1319A Reflow Nozzle
R1319A Reflow NozzleRemoval of surface-mounted integrated circuits
For IC removal (approximate size 0.8 in. x 0.8 in.)
For IC removal (approximate size 0.6 in. x 0.6 in.)
For IC removal (approximate size 0.5 in. x 0.5 in.)
For removal of RF PA 
						

							3-4 Test Equipment, Service Aids, and ToolsThis Page is Intentionally Left Blank 
						

							Test Mode and Error Codes 4-1
4Test Mode
and Error Codes
4
Front Panel Test ModeThe functions of the radio controls for the Front Panel Test Mode are as follows:
Test Mode/EntryTest Mode allows radio checks to be performed in the Þeld. To provide a level of
protection to the Test Mode entry, proceed according to the following sequence:
1. Place radio in TRUNKING operation mode and wait for 6 seconds. (See
Quick Start card for instructions on how to enter that mode.)
2. Turn radio off.
3. Verify that RIB is off.
4. Turn radio power supply (13.6 V DC) on .
5. Turn radio on.
The radio enters Test Mode operation:
¥ Speaker unmutes.
¥  One beep is heard to indicate operation on the first test frequency
(default).
¥ Display shows 4 1 .
Test Mode/Channel
SelectionUse the PTT switch for channel selection. A short press and de-press on the PTT
switch (button-like push)  will advance the radio to the next channel (cyclical) .
Seven channels are available during test mode, as shown in the table below.
(1). CC1-CC4 are control channels programmed in association with
the selected trunking system.
(2). M stands for  modulation type (0-3). See Table 4-2. Table 4-1 Test Mode/Channel Selection
Channel Number Rx  Frequency Tx Frequency Display
1 851.0125 MHz 806.0125 MHz ÒM 1Ó (2)
2 869.9875 MHz 824.9875 MHz ÒM 2Ó (2)
3 860.5125 MHz 815.5125 MHz ÒM 3Ó (2)
4 CC1 (1) CC1-45 MHz ÒM 4Ó (2)
5 CC2 (1) CC2-45 MHz ÒM 5Ó (2)
6 CC3 (1) CC3-45 MHz ÒM 6Ó (2)
7 CC4 (1) CC4-45 MHz ÒM 7Ó (2)
MODE (4 IS INITIAL MODE)CHANNEL 
						

							4-2 Test Mode and Error Codes
Test Mode/Tx ModulationUse PTT switch for modulation type selection. A continuous press will advance
the radio to the next modulation test (cyclic scroll ) and perform Tx test until PTT
is released. The modulation selection is described in the table below.
Table 4-2 Test Mode/Tx Modulation
(1).  C stands for the selected channel (1-7). See  Table 4-1.
Fail ModeThe radio will enter Fail Mode  upon detecting one of the following errors:
¥ Application startup self check error
¥ Codeplug information check error
There are two categories of errors: critical and non-critical. Critical errors will
stop radio normal operation.
(1). For error no. 7,  personality (system) change is allowed although
the illegal tone is heard. For error no. 8 the temporary illegal tone
is heard. (See the Quick Start card for instructions on how to
change personality.) To exit fail mode, power radio off.
Non-critical errors will be temporarily indicated  as described in
the table above.
Exiting Test ModeTo exit Test Mode, proceed as follows:
¥ Turn radio off.
¥ Turn RIB on.
¥ Turn radio on. Modulation Type Internal Speaker Audio Signaling Internal Microphone Status Display
CSQ None On Ò0 CÓ (1)
Low Speed Busy Channel On Ò1 CÓ (1)
High Speed Call Back Off Ò2 CÓ (1)
DTMF Ò#Ó DTMF Ò#Ó Off Ò3 CÓ (1)
Table 4-3 Fail Mode
Error number Failure Description Display Critical Tone Sound
1 Internal RAM F 01 Yes Illegal tone
2 External RAM F 02 Yes Illegal tone
5 OTP checksum F 05 Yes Illegal tone
6 Codeplug checksum E 06 Yes Illegal tone
7 (1) Codeplug personality E 06 No Illegal Tone (when selected
personality has checksum error)
8 Codeplug tuning error E 06 Yes Ilegal tone 
						

							Disassembly & Reassembly 5-1
5Disassembly & Reassembly5
This chapter explains, step by step, how to disassemble and assemble the radio, to
board level.
Disassemble the Radio
Remove the Control Head1. Turn the radio upside down.
2. Insert a small ßat blade screw driver, or similar, in the recess
between the control head and the main board.
3. Press until the side of the control head releases.
4. Pull the control head away from the main board.
5. Remove the ßat cable from the socket on the radio side.
Figure 5-1 Control Head Removal
Figure 5-2 Flat Cable Removal
CONTROL HEAD
RECESS (not visible) 
						

							5-2 Disassembly & Reassembly
Remove the Top Cover1. Insert a small ßat blade screw driver in the side recess of the
radio chassis. Repeat the operation on the opposite side of the
radio.
2. Lift the top cover over the chassis.
Figure 5-3 Top Cover Removal
Remove the Main Board1. Remove the power and antenna connector retaining clips by
inserting a small ßat blade screw driver between the clip and the
top of the chassis wall and gently prying the clip upwards.
2. Remove the 3 screws of the PA shield using a T8 TORX driver.
Remove the PA shield by gently prying up each corner of the
shield.
3. Remove the 8 screws securing the main board to the radio
chassis.
4. Carefully remove the main board by rotating it out of the chassis.
5. Slowly lift the board on the front edge, the side with the
connector that mates with the control head, and pull gently
toward the front of the radio.
CAUTION
The thermal grease can act as an adhesive and
cause the leads of the heat dissipating devices to
be over stressed if the board is lifted too quickly.
SIDE RECESS
! 
						

							Disassembly & Reassembly 5-3 Figure 5-4  Main Board Removal
Disassemble the Control
Head
Figure 5-5 Control Head Removal
1. To pull out the printed circuit board from the control head hous-
ing, insert a small blade screw driver in the side groove near the
four protruding tabs. Remove the board from the control head
housing.
2. Disconnect the board from the speaker by removing it from the
socket.
3. Remove the keypad from the control head housing by lifting it
up from the board. Care should be taken not to touch or get other
contaminates on the conductive pads on the under side of the
keypad or conductive contacts on the printed circuit board.
4. Take the LCD frame out of the control head.
CLIPS
SHIELD
TA B
KEYPAD
LCD FRAME
VOLUME KNOB
ZEBRA CONNECTOR
POTENTIOMETER SPEAKERGASKET
FLAT CABLE
PART OF LCD FRAME
HOUSING