Motorola IC-T81A, IC-T81E service manual VCO Board

Page 32

[RF UNIT]

REF	ORDER		DESCRIPTION
NO.	NO.		DESCRIPTION
NO.	NO.

C895	4030013850	S.CERAMIC	ECUE1E102KBQ
C896	4030014050	S.CERAMIC	ECUE1H030BCQ
C897	4030014090	S.CERAMIC	ECUE1H060CCQ
C898	4030013850	S.CERAMIC	ECUE1E102KBQ
C899	4030013850	S.CERAMIC	ECUE1E102KBQ
C900	4030014020	S.CERAMIC	ECUE1H020BCQ
				[AUS], [SEA], [USA-1]
	4030014090	S.CERAMIC	ECUE1H060CCQ [EUR], [UK], [ITA]
C901	4030013850	S.CERAMIC	ECUE1E102KBQ
C902	4030013850	S.CERAMIC	ECUE1E102KBQ
C903	4030013970	S.CERAMIC	C1005	JB 0J 104K-T-N
C904	4030013850	S.CERAMIC	ECUE1E102KBQ
C907	4030013970	S.CERAMIC	C1005	JB 0J 104K-T-N
C908	4030013850	S.CERAMIC	ECUE1E102KBQ
C911	4030013850	S.CERAMIC	ECUE1E102KBQ
C912	4550002980	S.TANTALUM	TEMSVA 1C 225M-8L
C913	4030013850	S.CERAMIC	ECUE1E102KBQ
C914	4030013850	S.CERAMIC	ECUE1E102KBQ
C915	4030013850	S.CERAMIC	ECUE1E102KBQ
C916	4030013980	S.CERAMIC	ECUE1H010BCQ
C921	4030013850	S.CERAMIC	ECUE1E102KBQ
C923	4030013850	S.CERAMIC	ECUE1E102KBQ
C924	4030013970	S.CERAMIC	C1005	JB 0J 104K-T-N
C928	4030013850	S.CERAMIC	ECUE1E102KBQ
C930	4030013850	S.CERAMIC	ECUE1E102KBQ
C931	4030013850	S.CERAMIC	ECUE1E102KBQ
C932	4030013850	S.CERAMIC	ECUE1E102KBQ
C933	4030013850	S.CERAMIC	ECUE1E102KBQ
C934	4030013850	S.CERAMIC	ECUE1E102KBQ
C935	4030013850	S.CERAMIC	ECUE1E102KBQ
C937	4030013850	S.CERAMIC	ECUE1E102KBQ
C938	4030013970	S.CERAMIC	C1005	JB 0J 104K-T-N
C939	4030013850	S.CERAMIC	ECUE1E102KBQ
C940	4030013970	S.CERAMIC	C1005	JB 0J 104K-T-N
C941	4030013850	S.CERAMIC	ECUE1E102KBQ
C942	4030006870	S.CERAMIC	C1608	JB 1H 222K-T-A
C943	4030013850	S.CERAMIC	ECUE1E102KBQ
C944	4030009350	S.CERAMIC	C1608	CH 1H 3R5B-T-A
C945	4030014180	S.CERAMIC	ECUE1H470JCQ
C948	4030013850	S.CERAMIC	ECUE1E102KBQ
C949	4030013850	S.CERAMIC	ECUE1E102KBQ
C950	4030013850	S.CERAMIC	ECUE1E102KBQ
C951	4030006860	S.CERAMIC	C1608	JB 1H 102K-T-A
				[AUS], [SEA], [USA-1]
	4030009500	S.CERAMIC	C1608	CH 1H 0R5B-T-A
				[EUR], [UK], [ITA]
C952	4030013850	S.CERAMIC	ECUE1E102KBQ
C953	4030013850	S.CERAMIC	ECUE1E102KBQ
C954	4030014250	S.CERAMIC	GRH708 CH 150J 200PT
C955	4030006860	S.CERAMIC	C1608	JB 1H 102K-T-A
C956	4030006990	S.CERAMIC	C1608	CH 1H 080D-T-A
C957	4030013850	S.CERAMIC	ECUE1E102KBQ
C958	4030013850	S.CERAMIC	ECUE1E102KBQ
C960	4030004960	S.CERAMIC	C2012	CH 1H 560J-T-A
C961	4030007080	S.CERAMIC	C1608	CH 1H 390J-T-A
C962	4030007140	S.CERAMIC	C1608	CH 1H 121J-T-A
C963	4030007080	S.CERAMIC	C1608	CH 1H 390J-T-A
C964	4030007010	S.CERAMIC	C1608	CH 1H 100D-T-A
C965	4030006990	S.CERAMIC	C1608	CH 1H 080D-T-A
C966	4030007010	S.CERAMIC	C1608	CH 1H 100D-T-A
C967	4030006860	S.CERAMIC	C1608	JB 1H 102K-T-A
C968	4030013850	S.CERAMIC	ECUE1E102KBQ
C969	4030005030	S.CERAMIC	C2012	CH 1H 221J-T-A
C970	4030004960	S.CERAMIC	C2012	CH 1H 560J-T-A
C971	4030006860	S.CERAMIC	C1608	JB 1H 102K-T-A
C972	4030013850	S.CERAMIC	ECUE1E102KBQ
C973	4030013850	S.CERAMIC	ECUE1E102KBQ
C974	4030013850	S.CERAMIC	ECUE1E102KBQ
C975	4030013850	S.CERAMIC	ECUE1E102KBQ
C976	4030013850	S.CERAMIC	ECUE1E102KBQ
C977	4030013850	S.CERAMIC	ECUE1E102KBQ
C978	4030013850	S.CERAMIC	ECUE1E102KBQ
C979	4030013850	S.CERAMIC	ECUE1E102KBQ
C980	4030013850	S.CERAMIC	ECUE1E102KBQ
C981	4030013850	S.CERAMIC	ECUE1E102KBQ
C982	4030013850	S.CERAMIC	ECUE1E102KBQ
C983	4030013850	S.CERAMIC	ECUE1E102KBQ
C985	4030013850	S.CERAMIC	ECUE1E102KBQ
C986	4030013850	S.CERAMIC	ECUE1E102KBQ
C987	4030013850	S.CERAMIC	ECUE1E102KBQ
C988	4030013850	S.CERAMIC	ECUE1E102KBQ
C989	4030013850	S.CERAMIC	ECUE1E102KBQ

[RF UNIT]

REF	ORDER		DESCRIPTION
NO.	NO.		DESCRIPTION
NO.	NO.

C991	4030014200	S.CERAMIC	ECUE1H101JCQ
C992	4030014200	S.CERAMIC	ECUE1H101JCQ
C993	4030013850	S.CERAMIC	ECUE1E102KBQ
C994	4030014200	S.CERAMIC	ECUE1H101JCQ
C995	4030013850	S.CERAMIC	ECUE1E102KBQ
C997	4030013850	S.CERAMIC	ECUE1E102KBQ
J3	6450000870	CONNECTOR	HEC2711-01-020
J4	6510019870	S.CONNECTOR	AXK5S40045P
J951	6510020400	S.CONNECT	MM7329-2700
J952	6510020400	S.CONNECT	MM7329-2700
W1	8900008750	CABLE	OPC-868 (MXFG76FG0400)
EP1	0910051346	PCB	B 5140F

[VCO BOARD]
REF	ORDER		DESCRIPTION
NO.	NO.		DESCRIPTION
NO.	NO.

Q301	1530003560	S.TRANSISTOR 2SC5195-T1
Q302	1530003560	S.TRANSISTOR 2SC5195-T1
Q311	1530003560	S.TRANSISTOR 2SC5195-T1
Q312	1530003560	S.TRANSISTOR 2SC5195-T1
Q313	1530003560	S.TRANSISTOR 2SC5195-T1
Q321	1530003560	S.TRANSISTOR 2SC5195-T1
Q322	1530003560	S.TRANSISTOR 2SC5195-T1
Q323	1530003560	S.TRANSISTOR 2SC5195-T1
Q350	1530003260	S.TRANSISTOR 2SC5006-T1
Q351	1530003560	S.TRANSISTOR 2SC5195-T1
Q353	1530003560	S.TRANSISTOR 2SC5195-T1
Q354	1530003560	S.TRANSISTOR 2SC5195-T1
D301	1720000690	S.VARICAP	1SV282 (TPH2)
D302	1790001260	S.DIODE	MA2S077-(TX)
D311	1750000610	S.VARICAP	MA2SV0500L
D312	1750000360	S.DIODE	1SS364 (TE85L)
D321	1790001260	S.DIODE	MA2S077-(TX)
D322	1720000370	S.VARICAP	HVU350TRF
D351	1790001310	S.VARICAP	1SV270 (TPH3)
D352	1790001260	S.DIODE	MA2S077-(TX)
L301	6200004480	S.COIL	MLF1608D R82K-T
L302	6200008190	S.COIL	0.25-1.9-8TL 80N
L311	6200004480	S.COIL	MLF1608D R82K-T
L312	6200008280	S.COIL	0.30-1.7-7TL 50N
L313	6200008170	S.COIL	0.35-1.6-8TL 54N
L321	6200004480	S.COIL	MLF1608D R82K-T
L322	6200008330	S.COIL	0.45-1.4-4TL 15N
L330	6200008230	S.COIL	0.30-1.3-5TL 22N
L331	6200003640	S.COIL	MLF1608K 100K-T
L332	6200005680	S.COIL	ELJRE 15NG-F
L333	6200005640	S.COIL	ELJRE 6N8Z-F
L334	6200005640	S.COIL	ELJRE 6N8Z-F
L335	6200005630	S.COIL	ELJRE 5N6Z-F
L336	6200005620	S.COIL	ELJRE 4N7Z-F
L337	6200005640	S.COIL	ELJRE 6N8Z-F
L338	6200005650	S.COIL	ELJRE 8N2Z-F
L360	6200003640	S.COIL	MLF1608K 100K-T
R301	7030005700	S.RESISTOR	ERJ2GEJ 274 X (270 kΩ )
R302	7030005120	S.RESISTOR	ERJ2GEJ 102 X (1 kΩ )
R303	7030004970	S.RESISTOR	ERJ2GEJ 470 X (47 Ω )
R304	7030004990	S.RESISTOR	ERJ2GEJ 221 X (220 Ω )
R305	7030005290	S.RESISTOR	ERJ2GEJ 682 X (6.8 kΩ )
R306	7030005290	S.RESISTOR	ERJ2GEJ 682 X (6.8 kΩ )
R307	7030004980	S.RESISTOR	ERJ2GEJ 101 X (100 Ω )
R308	7030007290	S.RESISTOR	ERJ2GEJ 222 X (2.2 kΩ )
R311	7030004970	S.RESISTOR	ERJ2GEJ 470 X (47 Ω )
R312	7030004990	S.RESISTOR	ERJ2GEJ 221 X (220 Ω )
R313	7030005290	S.RESISTOR	ERJ2GEJ 682 X (6.8 kΩ )

S.=Surface mount

6 - 9

Image 32

Contents Multiband FM Transceiver Introduction Ordering PartsRepair Notes Sample OrderTable of Contents Specifications GeneralTransmitter Version 50 MHz 145 MHz 440 MHz 1200 MHz MHz RX onlyReceiver BandWFM WFMInside Views Logic UnitRF Unit CPUDisassembly Instructions Removing the Chassis Panel Removing the Shield PlateRemoving the Logic Unit Removing the RF Unit Logic unitAntenna Switching Circuits RF Unit Circuit DescriptionReceiver Circuits Duplexer Circuit RF Unit7 1ST Mixer Circuit RF Unit Transmitter Circuits DRIVE/POWER Amplifier Circuits RF Unit APC Circuits RF UnitMHz PA APC Control CircuitPower Supply Circuits Voltage Line PLL CircuitsLine Description VCCPort Allocations 1 I/O Expander IC RF Unit IC22 I/O Expander IC RF Unit IC3 Pin Port Description Number NameCPU Logic Unit IC1 Adjustment Procedures Preparation‘ Required Test Equipment ConnectionPLL Adjustment RF Unit Bottom View ULVVLV RF Unit TOP View 6MLVReceiver Adjustment DialSensitivity VHFLogic Unit TOP View Meter SSGTop Push and hold MHz band 101 dBmDisplayed frequency Push and hold445.000 MHz USA-1 SQL keyTransmitter Adjustment Deviation HPF OFF LPFDtmf AUS, SEAParts List =Surface mountTrimmer Ceramic ECUE1H121JCQ Transistor UN911D TX Coil Eljnd R10J 0.1U Themistor Ceramic ECUE1H060CCQ Ceramic ECUE1H390JCQ VCO Board Ceramic ECUE1H120JCQ Mechanical Parts and Disassembly AccessoriesChassis Parts VCO UnitMP29 C Diodes SEMI-CONDUCTOR InformationTransistor and FET’S TOP View Board LayoutsLogic Unit Bottom View IC1IC3 GND Pset IfinRF Unit IC6L912 J4 to Logic unit J1IC2 MP1IC3 VCO Board J302 to RF unitOUT 12VCOOUT VLVCO3 VHF GND VHVCO3 UVCO3 Uhfout GND 12VCO3 GNDQ354 Block Diagram Mode Xtal BPF PDA2, CK AMP TX/RX FrequencyTX/RX Buff ANT LPF HPF AMPReset Mode Xtal Initial BPFMOD TX/RX Frequency ANT Buff HPF LPF YGRSection Voltage Diagram Logic Unit2NDLO Oscin Mixin Oscout GND Mixout REC VCC DET Ifin RssiDEC Ifout Filout Quad WFM NTCCF20124AH 473KCT TXC12VCO COM2 Reset COM3 COM2 Reset PowerClonein VCC VIN Cpuhv COM4 COM3 COM2 COM1RF Unit VHF400M 1200M50M 00M1200MHz 400MHzGND1 PLST1 IN1ENB VCC2 LOK GND2Icom America Inc 5566I-S Icom Inc