Motorola GP series Informations sur les services - Page 21

Parcourez en ligne ou téléchargez le pdf Informations sur les services pour {nom_de_la_catégorie} Motorola GP series. Motorola GP series 24 pages. Professional radio
Également pour Motorola GP series : Manuel d'entretien (26 pages), Informations sur les services (31 pages), Informations sur les services (43 pages), Informations sur les services (30 pages), Manuel de l'utilisateur (16 pages), Manuel (30 pages)

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Motorola GP series Informations sur les services

Voltage Controlled Oscillator

5.0
Voltage Controlled Oscillator
No TX LO or No
signal at U205 Pin
32 in TX
Check signal at
collector of Q201
Level >
+2 dBm
No
Check signal at
drain of Q203
Level >
-3 dBm?
No
Check C215, C216,
L207, L208, L209,
U203
Problem
fixed?
Yes
Done
Check L204, L211, L212,
Yes
L215, C221, C228, C229,
C230,C231, C235,C297,
Yes
No
Replace Q203
R204, R234, R238
Replace Q201
Replace Q202
and Q204
No RX LO or No
signal at U205 Pin
32 in RX
Check signal at
collector of Q201
Yes
Level >
+10 dBm?
No
Check signal at
drain of Q202
and Q204
Yes
Level >
+7 dBm?
No
Check DC volt-
age across R203
No
Level >
500 mV ?
Yes
Check C200, C202, C203,
C222, C223, L201, L203,
TR201, CR202
3-5