Motorola Minitor III Service

							SERVICE GUIDE
Tabl e 3 .Ali gn ment Proce dur e s(VH F)
MinitorIII
1Set RF gene rato routpu t freq ue ncy 1 0 21.7 MH zlor0s pl it and 21 .4MHz or 21. 7 MH zfo r A , B , and C sp lits .
d epend ing on PPSrea d ing , a nd sp ray into r ece ive r.
2S et RM Svonmete r10 th e-40dBsca leand gener aleenough signal10 mea sure m id- sca le attheMlpoi nt.
3Mea sure the exact IF atTP4(Ml)approx ima tely 4 55 kHz.See Figur e 8.
4Se lR Fgenera tor t o the p rogram medcustome r fr eq ue ncy .
5Sel RF genera torlevel lo ramidsca lereadi ng o n AC vol tmeter ,
6Mo nito r TP4frequency.A dj ustC20610 frequency measured in ste ps 2 and 3;1:50Hz.
7M on itor TP1 2devoltage .A djuste2l01 01volt.
8M on itor T P41evel. Adjus tetOSto max imum .
9Monito r TP 41evei. AdjustC l0910m axi mum .
TP 12III
C206!C2 1Q

TN(Ml)
C 10 9
111I
,~]fa~;
t.,:§:e>•
_.
990058
18
Figu re8.V HF Receiver Alig n men t Test Poin t san dAdj u stmen t s
De cember 16. 200268 8 1 033855- F 
						

							Min it or III
Tabl e 4. Alignm entPro c edur es(UHF)SERVICEGUIDE
1Set R F gen erat orou tputlrequencyto 2 1.7 MHz f or A4 and A9 ,a nd 21.4 MHzfo ro ther splits, and sp ray int o receive r.
2Se t A M S voltm eter10Ih e ·40 dB seale and gene rateenough s ignal10measu re mid -scal eatth eM 1poi nt.
3Meas ure the exac tIF a tTP4 (M 1)approxima tely 45 5 kHz. S eeFigu re 9 .
4SetAF gene ratorto the progr am med customer f requency .
5Se tA F gene rator le vel lor am id scale re adi ng o nAC voltmeter.
6Mo nito rT P4 Ire qu ency .Ad jus t C206 to frequ e ncy m easuredins teps 2 and3±50 Hz.
7M on ito r T P12de v oltage. Adjus tC2 10 to 1 vott.
8M on ito r T P4 lev el. Ad just C105 to maxim um.
9Monit o r TP4 1eve i.Adj ustC 109 to maximum.
TP4 (Ml )
teF--C l09
688 1033B 55·F
F igu re9.U H F Receiver Alig n mentTestP oint sandAdjustments
D ecember16 ,2002
9905 32
19 
						

							SERV IC E GUIDE
Squelch Adjustment
Minitor III
1.Remove pagerback cover an d pl acepage r in t o radiatio ntest fixture

						

							MinitorIIISERVICEGUIDE
Speakerplug of au diotestfi xt u r e (Figu r e1 2 )co n ne ct sto spe a kerjack of pa ger.
Aud iotr a n sform er of au dio lest fixtur econnect sto SINAD
meter.
e
mS INAD METER
!\1AU OIO~AlYZER
9900 96
Figure12 .Au dio TestFixt ureSch emati c
3.SettheRFgeneratoroutputto t hecarrierfre qu en c y.
4.SettheRF level to-50dBm.
5 . Modu
latetheRF generato routputat3.3 kHzanda1000 Hztone .
6 . S
ettheSINADmeterto measureaudio R MS.
7.Adjustthepagersaudio vo lumecontrol for1.5VR MS attheou t pu t ofth e aud io
transformer .
8.Tu rn offthegenerators RF output.
9. Adju stth e s qu el ch
trimresistor, locatedatthenarrowendofthedecoder board
( Figu r e
1 3 ),u nt il a udioturnson .
Sq uelc h Trim
R esistor (R413)
9900 59
Fi gu re13 .Squ elch Adju stm entLocation( De coder B oard)
10 .Turnon th eRltgcncrators o ut pu t an d a djust th e lev eluntiltheme terin dicates
4dB SIN AD .R e cord the RF dBoutputle v el.
11.S lowl yadju stthesq uelc htrimresistor(R4 13 )unt i lthe audio justturnsoff .
12 .S lowly increase the l eve loftheRFgeneratorin0.5dB ste psuntiltheaudio
turns ba ck on .
13 .T heSI NADlevelwhentheaudio turns o nis o pe n in g S INAD .Itsh ou ld
typi cally be betwe en8and1 2dB SINAD. RecordtheSINAD le v el an d t he RF
dB out put le ve l.Typica lRF gene
ratorlevel differ en ce sbetw een4dB closin g
SINAD and8- 12dB o p en ing SINAD is4to5dB.
688,033B55 ·FDecembe r 16,20 0221 
						

							SERVICEGUIDEMinitor III
Aud ioTri m Pot Adjustment
1.Remo vepagerback c over and p lace pagerinto ra d ia t ion te s tfixture a s shown
i n pro ced
ures.
2. Connect te
stequ ipme nt (Fig ure 11 ).
3 .
SetR F ge nera t or outputat-50 dBm on carrierfrequency (qu ie t receiver ).
4. Mo du
lateRF ge n eratoroutputwi th 1000 Hzat1.65 kHz deviation.
5 .
Setpage rsvolum econtrol to maxim um.
6. Adj u staud iotrim potVRI(F ig u r e 14) to produceanoutputfromtheaudio
speaker.
22
Figure14.Aud io Trim PotA dj ustme n t
December 16.20 0 2
990060
688 1033855 ·F 
						

							MinitorIII
PartNumber Charts
SERVICEGUIDE
The followingtablesare provided foruse as a refer ence for thereceive rs , decoders,
andrep lace mentpartsassociated withtheMin itorII Ipager s.
T able5.Low Band R eceiv erlD ecod er ModelChart
PAGER .1CHANNE L NON STOR EDVOICE
PAGER .
2 CHANNEL NON STORE DVO ICE
A
N R82368A2 PAGERASSEJ,lBlY(33.0-36 .999MHz)
ANA82368A3 PAGERASSEMBlY (37.040.999MHz)
ANR82368A4 PAGERASSEMBlY (4 1 .0-44 .999 MHz )
ANRB2368ASPAGERASSEMBlY(4S ().49 ,O MH z)
KEY :XITEMINClUDED A=AlTERNATEITEMSUPPLIED 0NO COST OPTlO NCCOST
OPTION R REOUESTOPTION
68810 33855·FD ecember 16 . 2 00223 
						

							SERV ICEGUIDE
T ab le 6 .V HF Receiv er/Decod er Mode l Char t
Minitor III
24
..:~-•.,.•
A03YM5n38ACPAG ER(143-174MH z)1CHANNElNON STORED VOICE
A03YMS7239ACPAGER(143-174..1Hz)2 CHANNEL NON STOR EDVOIC E
A03YMS9Z38ACPAG ER(143- 114MHz)1CHANNEL STORE DVOIC E
AroYMS9239ACPAGER1143- 174M Hz)2 CHAN NELSTOR EDVOICE
AQJYMS723BBCPAGER114J -114MHz)1CHAN NELNONSTOR EDVOIC E
A03YMS7239BCPAGER1143-114MHz )2CHANNEL NON STOR EDVOIC E
A03YMS9238llCPAGER 11 4 3- 114MHz)1 CHAN NELSTORED VOICE
A03YMS923OOCPAGER(143- 174MHzl2CHANNELSTORED VOICE
)~!~W1}l'J3;1PAGEAASSEM!!!!!!.•
NRD3744A2PAGERASSEMBLY (151-159MHz )
NR03744A3PAGERASS EMBLY (159-167MHz)
NRD37
						

							Minitor III
6881033B55-F
Tab le 7. U HF Receiver/D ecoderModel Chart
A ANREl841A2PAGERASSEMBLY(406.-\14MHz)
A ANREl 84 1A3 PAG ERASSEMBLY{414-422MH z}
A ANREl841A4PAGERASSEMBLY(422-43QMHz}
A ANAEl841A5 PAGER ASSEMBLY (450-458 M Hz)
AANAEl841A6 PAGER ASSEMBLY(458-464MHz)
A ANREl 841A7 PAGER ASSEM BLY (464- 470 MHz )
AANREl841A 8 PAGER AS SEMBLY(470-476MHz )
AA NREl 84 1A9 PAGERASSEMBLY(476- 482 MHz )
AANAEl841A10 PAGER ASSEMBlY (462- 488 MHz)
AANAEl841A11 PAGER ASSEMBLY(468 -494MHz )
A A NA E
l841A12 P AGERASSEMBlY(494-500 MHz )
A A NR El841A13 PAGEA ASSE MBLY
(500-506MHz)
A A NRE184 1A14 PA GER ASSEMBLY
(506·51 2MHz)
A A NREl 843A2 PAGEA ASSEMBLY (406-414 M Hz)S TOA ED VO ICE
AANRE1843A3 PAGERASSEMBLY (4 14·422 MHz) S TOAE D VO ICE
AANREl843A4PAGERA SSEMBLY (422 -430 MH z) STO RED VOI CE
A
ANR El843A5 PAGERASSEMB LY(450-458 MHz) ST ORED V OICE
A A NREl843A6 PAGERASSEMBLY(458-464 MHz) ST ORED VOICE
A A NREl843A7 PAGERASSEMBLY(464 -470 MHz) STORED VOICE
A A NREl843A8 PAGERASSEMBLY (470476 MHz)STORED VO ICE
A A NREl843A9 PAGER ASSEMBLY(47 6 -46 2M Hz) STORED VO ICE
A A NREl843A10 PAGER ASSEMBLY (482-468 MHz) S TORED VO ICE
A ANREl843A11 PAGERASSEMBL Y(488-494MHz ) STORED VO ICE
A A NREl843A12 PAGER ASSEMBLY
(4 94-500MH z) S TORED VOI CE
A ANREl843A13 PAGERASSEMB LY
(500-506MH z) S TORED V OICE
A A
NREl843A14 PAGER ASSEMBLY (506-5 12MHz)STORED V OICE
K EY ;
XIrEMINCLUD EDA ALT ERNATE ITEM SU PPLIED0NO COS T OPTIONCCOST OPTIONRREOUEST OPT ION
December 16,2002 SERVICE
GUIDE
25 
						

							SERVICEGUIDE
26
Tabl eB .LowB and Rece iv erlD eco d er Tanap aCh ar t
X 0 162939622 RECEIVERASSE MBLY(33 .0-37 .0MHl)
X0162939823RECEIVEAASSE MBLY137.G-41.0 MHz )
X 016293982 4RECEIVERASSEMBLY(41.G-4 5.0MHz I
X0162939625R ECEIV ERASSEMBLY(4S.D-49.0 MHz )
x xxX0162939626D ECOD ERBOARD(liONS TOREDVOIC E)
KEY :
X..ITEMINCLUOEDAAL TERNATEITEM SUPPlIEDo,NoeOST 0P110N C=COST0PTl0NR,REOUES TOPTlON
Decem b er 16 .2002
Minitor III
68810 33B5 5·F 
						

							MinitorIII
Tabl e 9. VHF Recei v er /Dec oder Tan apa ChartSERVICE GUIDE
.,.•..•
NRD3744 B l PAGER (
143-150 .999 MH z)
NRD3744B2 PAGER
(
151-158.999M H z)
NRD37
4483PAGER ( 159·166.999 MH z)
N RD374 4B4 PAGER (
161-114 MHz)
NRD3746
BlP AGE R (143- 150. 999 MHz )VIBR ATOR I NCLUDED
NRD374 6B2 PAGE
R(15 1-158.999 M Hz) V IBRATOR IN C LUD ED
N RD3746 B 3 P
AG ER ( 159 - 166.99 9 MHz) VIBR ATO R I NC LUDE D
NR D3 746 B4 P
AG ER ( 167 -174 M Hz ), VIBRATORINC LUD ED
NRD37
48BlPAGER (143-150 .999MHz) STORED VOICE&VIB RATOR
N RD3748B2 PAGER(
151- 158_999 MH z) STORED VO IC E
&VIBRA TOR
NRD3748B3 PAGER (
159-166.999 MH z) S TORE D VOICE
&VIBRATOR
NRD3148B4 PAGER (
167-11 4
MHz ).STORED VOICE&VIBRATORINCLUDED
NRD3740ClPAGER ( 143-150. 999 MHz)
NR D374
6C2PAGER ( 15 1-158.999 M Hz)
N R D3746C3 PAGER (159-166.999
MHz)
NRD3746 C4 P
AG ER (16 7 ,17 4 MH z)
N R D 374 8 C1 PAG ER (1 43-150. 99 9 M Hz) STORED VOICE AN D VIBRAT OR
N RD37 48C2 PAG ER (151- 158.99 9 MHz ) S TORED VOICE AN D V IBRATOR
N RD 3748C 3 PAG ER (159-166 .9 99 MHz)STORED VOICEAN D VIBRA TOR
NRD37 48C 4 PAG ER (167-114
M Hz)STOR ED VOICE AND V IBRATOR
NRD3746Dl PAGER (143- 150.999
MHz)
NRD3746D2 PAGER(151-158-999M Hz )
N RD3746D3 PAGER (159-166.99 9 MHz )
N RD3746D 4 PAGER(167- 114MHz )
N
RD3748DlP AG ER ( 143, 150 .999 MHz )ST OR ED VO ICE
N RD3 748 D2 PAG ER ( 151- 158 .999M Hz) S TO RED V OIC E
N RD3748 0 3 PAGER (159-166.9 99 MHz ) STORED V OIC E
NRD37 48D4 PAGER
(161-174 .999M Hz) STORE D VOICE
N RD3746E1 PAG ER (143-150.99 9 MHz)
NRD3146E2 PAG ER (15 1158.9 99 MHz)
NRD3746E3 PAGER (159-166.99 9MHz)
N RD3 746 E4 PAG ER (161 -114 MHz )
NRD3748 E1 PAGER (143
-150.999 MHz) STORED VOICE
NRD3748E2 PAGER (151-158.99 9 M Hz ) STORED VOICE
NR D374 8 E3 PAGER (15 9- 166 .999 MHz ) STORED VO ICE
NRD 374 8E4 PAGE R(167 ·174.999 M Hz)STO RED VOICE
X XXX X XX X X
X X XX X X X X X
0162939B11 RECE IVERASSEMBLY (15 1-158.999MHz)
X X XX X X X X X0162939B12 RECEIVERASSEMBLY(159·166.999 MHz)
X X X X XX X XX0162939B13 RECEIVE
RASSEM BLY(161- 174 M H z)
A
AAAAAA A AAAA 0162939B08 DECODERBOARDl\VITHS QUELC H)NON ·VIBRATOR
AAA A 0162939B14 DECODERBO ARD ( STO R ED VO IC E) NONNIB RATOR
AAAAAAAAAAAA0162 939820DeCODERBOAR D ( NONSTORED VOICE)
A
AAA0162 93982 1 D EC O D ERBOARD(STO REDVO IC E)
xx xx xx x x xxxx xxxx0162 939827 DECODERBOARD (NON STORE D VOICE)
xx xx x x xxxxxx016293 9B 28 D EC O D ER BOA RD(STORED VO IC E )
N o l a:Iftne non -vibratordecoders arcnOI ava ilabl easrep lace men lparts .decoderswilh vib rators arc tnedesignaledreplacementparIs
KEY. X IT EM INC LU DED A ALTERNA TEITEM SUPPLIED 0NO COS TOP TION CCOS TOPTIO NRREOUESTOPTION
688 1033 B55·FDecemb er 1 6,2 0 0227