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...

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...

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...

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...

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...

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-...

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...

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...