Motorola GP series Detailed Service Manual

3-20 UHF PCB 8480450Z03 / PCB 8480587Z01 Parts List
* Motorola Depot Servicing only
Reference designators with an asterisk indicate
components which are not fieldreplaceable
because they need to be calibrated with
specialized factory equipment after installation.
Radios in which these parts have been replaced in
the field will be off frequency at temperature
extremes.
R434 0662057M62 330
R435 0662057M81 2000
R436 0662057M01 0
R445 0662057N08 24k
R446 0662057N22 91k
R447 0662057N38 430k
R448 0662057N06 20k
R449 0662057N08 24k
R450 0683962T45 68 ohms, 1W
R457 0662057M98 10k
R460 0662057M90 4700
R461 0662057M56 180 (not used in GP140/
GP240)
R462 0662057M98 10k (not used in GP140/
GP240)
R463 0662057M61 300
R471 0662057N06 20k
R472 0662057N12 36k
R473 0662057M26 10
R475 0662057M01 0
R476 0662057N35 330k
R477 0662057M74 1000
R478 0662057M98 10k
R481 0662057N08 24k
R492 0662057M01 0
R501 0662057M70 680
R502 0662057M56 180
R505 0662057M98 10k
R506 0662057N15 47k
R507 0662057M01 0
RT300 0680590Z01 THERMISTOR_33K
RT400 0680590Z01 THERMISTOR_33K
S501 4080710Z01 Frequency Switch
S502 1880619Z02 Volume/on-off switch
SH100 2680507Z01 Harmonic Filter shield
SH101 2680510Z01 RF PA shield
SH201 2680511Z01 Synthesizer top shield
SH202 2680511Z01 Synthesizer bottom shield
SH241 2680513Z01 Resonators shield
SH242 2680514Z01 VCO Buffer IC shield
SH301 2680554Z01 Receiver front end shield
Circuit
Ref
Motorola
Part No.
Description
SH302 2680555Z01 Receiver front end bottom
shield
SH303 2680509Z01 Mixer shield
SH304 2680624Z01 Mixer diode shield
SH321 2680508Z01 LVZIF 2nd LO shield
SH322 2680514Z01 LVZIF shield
SH323 2680553Z01 Crystal Filter shield
SH400 2680505Z01 Controller Memory Shield
SH401 2680506Z01 Controller on-off shield
SH402 2680515Z01 Microprocessor shield
SH403 2680516Z01 Asfic_Cmp/Audio PA shield
T301 2580541Z02 Balun transformer
T302 2580541Z02 Balun transformer
U101 5105109Z67 LDMOS driver IC
U102 5185765B28 PCIC
U201 5185963A27 LVFRACN Synthesizer IC
U210 5102463J61 Inverter
U211 5102463J61 Inverter
U241 5105750U54 VCO Buffer IC
U247 5105739X05 5V Regulator
U248 5102463J58 3.3V REGULATOR IN SOT23-
5 PKG
U301 5109632D83 LVZIF IC
U400 5102463J40 3.3V Regulator
U404 5185963A53 Asfic_Cmp
U406 *5102463J59 128K X 8 FLASH ROM
U407 *5102463J64 16K X 8 EEPROM
U409 5102226J56 Microprocessor
U410 5102463J57 3.3V Regulator (not used in
GP140/240)
U420 5102463J44 Audio amplifier
VR432 4805656W08 Zener diode-5.6V
VR433 4805656W08 Zener diode-5.6V
VR434 4802245J73 Zener diode-6.8V
VR439 4880140L17 Zener diode-12V
VR440 4802245J73 Zener diode-6.8V
VR441 4802245J73 Zener diode-6.8V
VR442 4802245J73 Zener diode-6.8V
VR443 4802245J73 Zener diode-6.8V
VR444 4802245J73 Zener diode-6.8V
VR445 4802245J53 Zener diode-10V
Circuit
Ref
Motorola
Part No.
Description
VR446 4802245J74 Zener diode-10V
VR447 4802245J74 Zener diode-10V
VR448 4802245J74 Zener diode-10V
VR449 4802245J74 Zener diode-10V
VR450 4802245J75 Zener diode-12V
VR501 4813830A18 Zener diode-6.8V
VR506 4802245J73 Zener diode-6.8V
1485777Z01 Insulator
8480450Z03 UHF Band 1 main PC Board
Circuit
Ref
Motorola
Part No.
Description

Motorola GP series Specifications

General

Operating Temperature	-30°C to +60°C
Frequency Range	136-174 MHz
Number of Channels	16
Channel Spacing	12.5 kHz / 25 kHz
Battery Life	8 hours (with standard battery)
Operating Voltage	7.5V DC
Ingress Protection	IP54
MIL-STD	810 C, D, E, F