Motorola Astro Digital Spectra Digital Spectra Plus Basic 6881076c20 E Manual

							6881076C20-EFebruary 3, 2003
Encryption: Erase a Key7-3
7.2.2 Models W4, W5, W7, and W9
To load an encryption key into a Model W4, W5, W7, or W9 radio:
7.3 Erase a Key
This feature allows you to select any one, or all, of the encryption keys to erase.
7.3.1 Model W3
1. Turn on the radio and set the volume level.
The position of the 
D button is not important.
2. Connect the cable from the key-variable loader (KVL) to the 
microphone connector on the radio.
3. Load an encryption key into the radio’s memory from a KVL 
using the correct loader for the radio’s encryption type.
Refer to your KVL user’s manual for more information on 
keyloading.
1. Press 

 to scroll to 
ERAS.
2. Press the 
 button 
below 
ERAS.
The last selected and 
stored key is displayed.
3. Do one of the following:
NOTE:
ERASED alternates with the key name if you go to a key 
that has been erased.
Press 

 to scroll forward in the list; press  to scroll 
backward.
OR
With Direct Entry, press the numeric keys to jump to the desired 
encryption key.
4. Go to 
Section 7.4: “Erase a Single Key (Model W3)” on page 7-5. 
						

							February 3, 20036881076C20-E
7-4Encryption: Erase a Key
7.3.2 Models W4, W5, W7, and W9
The Select Key to Erase feature allows you to manually select any one, or all, of the encryption keys 
to erase.
1. To enter the Advanced 
Secure menu, press 
and hold the 
 button 
until a tone sounds.
2. Turn the Mode knob (W4) or press the Mode rocker switch 
(W5, W7, W9) to scroll to the 
ERASE KEY option.
3. Press the Sel button to enter the Key Erase menu.
The display changes to show the last key that was selected and 
stored after the Key Erase menu was entered.
4. Turn the Mode knob (W4) or press the Mode rocker switch 
(W5, W7, W9) to scroll to the desired key.
5. To delete the selected key, press the Sel Button.
The radio deletes the key, and the display alternates between 
the key name and 
ERASED.
NOTE:When you scroll to an erased key, the display 
alternates between the key name and 
ERASED.
XMIT
BUSYMode
Volume
Pwr
Phon
Call Sel Scan
Mic
Home
DimH/LDir Mon
SECURE
INDICATORMODE
KNOB
HOME SECUREModel W4
ModeVol
Mic
Phon
Call Sel
H/LMon Dir
PWRScan
XMIT
BUSY DIM
HOME
MODE
HOMESECURE
INDICATORSECURE
Model W5
O#Del    Rcl
ModeVol
MicPhon
Call Sel
PWRScan
XMIT
BUSY DIM
HOME
1Ste2
3Lck4Sts5Rpg6Msg7H/L8Mon9Dir
MODE
HOME
SECURE
INDICATORSECURE
Model W7
Model W9
XMIT BUSY123
456
789
0DIM
Pri
Non
Pri
Emer DirScan
Call
Mode Vol Sel
Home
PageRpgmSite
Phon H/L Lock
Rcl Sql
Del
MODE SELECTHOME
Sts Msg Srch
SECURENET 
						

							6881076C20-EFebruary 3, 2003
Encryption: Erase a Single Key (Model W3)7-5
7.4 Erase a Single Key (Model W3)
To erase a single key:
7.5 Erase All Keys
7.5.1 Model W3
To erase all keys at the same time:1. Press the 
 button 
below 
SNGL to request 
erasure of the 
selected key.
ERASE SNGL KEY, YES 
and 
NO are displayed.
2. Press the button 
below 
YES.
The internal selected 
key is set to zero.
ERASED is alternately 
displayed with the key 
name confirming the 
erasure.
3. To exit the menu without erasing a key, press the 
m button 
below 
ABRT, or the PTT button, or the mode button, or O.
The home mode is displayed.
1. Press the 
 button 
below 
ALL to request 
erasure of all keys.
ERASE ALL KEYS, YES 
and 
NO are displayed.
2. Press the button 
below 
YES. All keys 
are erased.
ERASED is alternately 
displayed with the key 
name confirming the 
erasure. 
						

							February 3, 20036881076C20-E
7-6Encryption: Over-the-Air Rekeying
7.5.2 Models W4, W5, W7, and W9
7.6 Over-the-Air Rekeying
The over-the-air rekeying (OTAR) feature allows the dispatcher to reprogram the encryption keys in 
the radio remotely.1. To enter the Advanced 
Secure menu, press 
and hold the 
 button 
until a tone sounds. 
2. Turn the Mode knob (W4) or press the Mode rocker switch 
(W5, W7, W9) to scroll to the 
ALL option.
3. Press the Sel button to erase all the keys in the radio.
The display shows 
PLS WAIT (W4, W5, W7) or PLEASE WAIT 
(W9) for two seconds, followed by 
ERASED being shown for 
about two seconds, then the display reverts back to 
ALL.
4. To abort from the key-erase menu, press the HOME button or 
the PTT button.
Pressing the PTT button causes the radio to transmit.
XMIT
BUSYMode
Volume
Pwr
Phon
Call Sel Scan
Mic
Home
DimH/LDir Mon
SECURE
INDICATORMODE
KNOB
HOME SECUREModel W4
ModeVol
Mic
Phon
Call Sel
H/LMon Dir
PWRScan
XMIT
BUSY DIM
HOME
MODE
HOMESECURE
INDICATORSECURE
Model W5
O#Del    Rcl
ModeVol
MicPhon
Call Sel
PWRScan
XMIT
BUSY DIM
HOME
1Ste2
3Lck4Sts5Rpg6Msg7H/L8Mon9Dir
MODE
HOME
SECURE
INDICATORSECURE
Model W7
Model W9
XMIT BUSY123
456
789
0DIM
Pri
Non
Pri
Emer DirScan
Call
Mode Vol Sel
Home
PageRpgmSite
Phon H/L Lock
Rcl Sql
Del
MODE SELECTHOME
Sts Msg Srch
SECURENET 
						

							6881076C20-EFebruary 3, 2003
Encryption: Over-the-Air Rekeying7-7
7.6.1 ASTRO Digital Spectra Model W3
1. Press 
 until REKY 
appears.
2. Press 
 below 
REKY.
REQUEST REKY is 
displayed.
3. Press the PTT button 
to send the rekey 
request.
PLEASE WAIT is 
displayed.
4. One of the following 
occurs:
The radio sounds five 
tones when the 
dispatcher has 
received the request.
NOTE:Any subsequent pressing of the PTT button will exit 
the feature and allow you to transmit in the normal 
manner. Pressing 
 or the emergency button also 
exits the feature.
If the display 
momentarily shows 
REKEY FAIL and a 
bad-key tone sounds, 
the rekey operation 
failed because the 
radio does not contain 
the Unique Shadow 
Key (USK).
You have to load the 
USK into the radio 
using the KVL before 
the radio can be 
reprogrammed over 
the air.
NOTE:If you exit at this point, but stay on the current channel 
in the dispatch mode, the radio momentarily shows 
REKEYED or DENIED and sounds a tone indicating the 
status of the rekey request. 
						

							February 3, 20036881076C20-E
7-8Encryption: Over-the-Air Rekeying
If the display shows NO 
ACK
 and a bad-key 
tone sounds, then the 
dispatcher has not 
acknowledged your 
request after the radio 
has tried five times to 
send it.
The radio then returns 
to the display 
message in step 2, 
allowing you to retry 
the request.
If the request is 
accepted and the 
radio is successfully 
rekeyed, the display 
momentarily shows 
REKEYED.
If the display 
momentarily shows 
DENIED and a bad-key 
tone sounds, the 
request has been 
denied by the 
dispatcher, and the 
radio returns to the 
home display. 
						

							6881076C20-EFebruary 3, 2003
Encryption: Over-the-Air Rekeying7-9
7.6.2 ASTRO Digital Spectra Models W4, W5, W7, and W9
1. To enter the Advanced 
Secure menu, press 
and hold the 
 button 
until a tone sounds.
2. Do one of the following;
Model W4: Using the Mode knob, scroll to the 
REKY option.
OR
Models W5, W7, or W9: Using the Mode rocker switch, scroll 
to the 
REKY REQ option.
3. To enter the rekey request menu, press and release the 
SEL 
button.
4. To initiate a rekey request, press and release either the Sel 
button or the PTT button.
The radio displays 
PLS WAIT (W4, W5, W7) or PLEASE WAIT 
(W9).
XMIT
BUSYMode
Volume
Pwr
Phon
Call Sel Scan
Mic
Home
DimH/LDir Mon
SECURE
INDICATORMODE
KNOB
HOME SECUREModel W4
ModeVol
Mic
Phon
Call Sel
H/LMon Dir
PWRScan
XMIT
BUSY DIM
HOME
MAEPF A
MODE
HOMESECURE
INDICATORSECURE
Model W5
O#Del    Rcl
ModeVol
MicPhon
Call Sel
PWRScan
XMIT
BUSY DIM
HOME
1Ste2
3Lck4Sts5Rpg6Msg7H/L8Mon9Dir
MODE
HOME
SECURE
INDICATORSECURE
Model W7
Model W9
XMIT BUSY
123
456
789
0DIM
Pri
Non
Pri
Emer DirScan
Call
Mode Vol Sel
Home
PageRpgmSite
Phon H/L Lock
Rcl Sql
Del
MODE SELECTHOME
Sts Msg Srch
SECURENETSECURE 
						

							February 3, 20036881076C20-E
7-10Encryption: Advanced Secure Operation
7.7 Advanced Secure Operation
NOTE:The Advanced Secure feature is available only on radios that have been equipped by the 
factory to support it. The radio must also be equipped with an encryption module.
Advanced Secure incorporates the Multikey feature and a dual-encryption feature into the existing 
secure system. Multikey allows a radio to be equipped with multiple encryption keys. A default key is 
included and is associated with the current mode. The keys are strapped to a given mode or are 
operator-selectable and can be indexed into groups of keys (for example, 16 keys can be indexed 
into two groups of eight keys). The keys are loaded using a manual keyloader.
In addition, your radio can support up to eight different encryption algorithms simultaneously.
7.7.1 Multikey Operation
The multikey feature can be used in both conventional and trunked applications.
Conventional Multikey - The encryption keys can be selectively strapped, one per each chan-
nel, by a qualified radio technician. In addition, you can have operator-selectable keys, opera-
tor-selectable indices, and operator-selectable key erasure. Encryption keys are loaded into the 
radio through a KVL.
Trunked Multikey - If you use your radio for both conventional and trunked applications, the 
encryption keys have to be strapped for trunking on a per talkgroup, or announcement group, 
basis. In addition, a different encryption key can be strapped to other features such as private 
call, dynamic regrouping, failsoft, interconnect, system wide, or emergency talkgroup.5. One of the following occurs:
If the radio receives an acknowledgment from the dispatcher, 
five tones sound.
If the radio does not receive an acknowledgment from the 
dispatcher, the display shows 
NO ACK.
After the radio is rekeyed, it displays 
REKEYED and returns to 
dispatch mode.
If the dispatcher does not allow it to be rekeyed, the radio 
displays 
DENIED and returns to dispatch mode after three 
seconds.
6. Press 
 to exit and return to normal operation. 
						

							Chapter 8 Disassembly/Reassembly Procedures
8.1 Introduction
This section details the procedures necessary to remove and replace the printed circuit boards in the 
ASTRO Digital Spectra and Digital Spectra Plus radios. After troubleshooting and determining which 
board needs to be replaced, disconnect the test equipment, the antenna cable, and unhook the dc 
power.
Locate the exploded view drawing of the radio in 
Chapter 11: Exploded Views and Parts Lists. Keep 
it handy for reference when disassembling and reassembling the radio.
When installing a new circuit board, all mounting screws should be started before any are torqued. 
This helps assure proper board alignment with the chassis.
After installing a new board, refer to 
Table 8-1 and perform the alignment procedures indicated for 
the replaced board.
8.2 Replacement Procedures
NOTE:After performing alignment procedures, always exit the SERVICE menu entirely (to the MAIN 
MENU) to save all changes properly. Failure to do so can result in a alignment (or other) 
failure.
Disconnect all dc power to the radio before removing any 
boards from the radio. Failure to remove power can result 
in unit damage caused by transients or accidental shorts, 
as well as a shock hazard.
Table 8-1.  Required Alignments After Board Replacement
Board ReplacedAlignment Required
Reference 
Oscillator
Transmit 
Deviation 
Balance 
(compen-
sation)
Tr a n s m i t  
Deviation 
LimitTr a n s m i t  
PowerTr a n s m i t  
Current 
Limit
Command Board X
VCO (Voltage Controlled 
Oscillator)XX
RF (Radio Frequency) Board X X X
PA (Power Amplifier) Board X X
VOCON Board XXXXX
!
W A R N I N G
! 
						

							February 3, 20036881076C20-E
8-2Disassembly/Reassembly Procedures: Replacement Procedures
8.2.1 Required Tools and Supplies
8.2.2 Control Head Boards
8.2.2.1  Model W3
NOTE:Numbers shown in brackets in the following procedure refer to item numbers in Figure 11.1: 
“Model W3 Hand-Held Control Head Exploded View,” on page 11-2
, and in Table 11.1, “Model 
W3 Hand-Held Control Head Exploded View,” on page 11-2
.
1. Remove the strain-relief boot (part of cable assembly [15]) from the housing assembly [7] by 
applying downward pressure on the boot and pulling it away from the control head until they 
are completely separated.
2. Carefully remove the rubber seal (part of cable assembly [15]) from the housing assembly [7] 
opening.
NOTE:Take care to avoid damaging this seal.
3. Using a small screwdriver, remove the seal support wedge [14] from the control head.
4. Using a small screwdriver to depress the telco lever, remove the telco connector (part of 
cable assembly [15]) from the control head, and pull the cable assembly away from the 
housing (like a telephone jack).
5. Remove the rear cover assembly [2] from the control head.
6. Locate the recesses in the lower portion of the housing on both sides of the rear cover’s snap 
features and, prying the snaps until the two parts separate, remove the rear cover from the 
unit.
7. Remove the two snap retainers [4] from between the circuit board [5] and the housing 
assembly [7].
8. Disconnect the microphone assembly [8] connector from the circuit board [5].
9. Carefully remove the microphone cable assembly from the keypad [6].
10. Carefully pry the housing’s snap features from the circuit board [5].
NOTE:Be careful to avoid damaging circuit board components.
There are seven snaps locking the circuit board to the housing. As the snap features are deflected, 
push the circuit board upward, using the keypad, to release the circuit board from the snap features.Table 8-2.  Required Tools and Supplies
Tools and Supplies
Small, flat-blade screwdriver
2.5 mm hex-key driver
Torx® T8, T10, and T15 drivers
3.0 mm Allen wrench
Thermal compound (Motorola part number 11-83166A01, or equivalent)
Electromagnetic Interference (EMI) metallic shielding tape (Motorola part 
number 11-85984D01, or equivalent)