Mechanical Parts and Disassembly, Chassis Parts | Icom IC-T90A

SECTION 7 MECHANICAL PARTS AND DISASSEMBLY

[CHASSIS PARTS]

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

	J1	6510022671	Connector SMA-R235-1		1
	MP1	8210018240	Panel 2507 REAR PANEL 63-222		1
	MP2	8930054200	2372 Jack cap		1
	MP3	8930056321	2507 DC cap-1		1
	MP4	8310050390	2372 Lock plate		1
	MP5	8610010990	Knob N284		1
	MP6	8930054290	2372 main seal		1
	MP8	8930054371	2372 Terminal spring-1		2
	MP9	8930054580	Seal O-ring (AM)		1
	MP10	8930054490	2372 shaft		1
	MP11	8830001470	VR nut (N)		1
	MP12	8930039850	Sealing washer (J)		3
	MP14	8860001281	2507 antenna rug-1		1
	MP15	8860001250	2372 vol rug Y587		1
	MP17	8930053590	Seal O-ring (AG)		1
	MP19	8830000880	VR nut (I)		1
	MP20	8610007510	Knob spring NO.7800		1
	MP21	8810009510	Screw PH BT M2⋅4 NI-ZU		3
	MP22	8810008620	Screw PH BT M2⋅20 ZK	2
	MP23	8810010090	Screw PH BT M2⋅12 ZK	2
	MP24	8810009560	Screw PH BT M2⋅6 ZK		4
	MP25	8810000100	Screw PH M2⋅4 ZK		1
	MP26	8930055510	2372 Insulate sheet		1
	MP27	8930058510	Isolating plate (HC)		1
	MP28	8930058500	Isolating plate (HB)		1
	MP29	8930058620	Isolating plate (HE)		1
	MP30	8930058630	Isolating plate (HF)		1
	MP31	8930058640	2507 PA sheet		1
	MP32	8930058800	2507 plate	[USA], [CAN] only	1
	MP33	8930058800	2507 plate	[USA], [CAN] only	1
	MP34	8930058820	2507 A-plate	[USA], [CAN] only	1

[RF UNIT]

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

	MP1	8930056310	2507 terminal holder		1
	MP2	8510014590	2507 A-VCO case		1
	MP5	8410002470	2507 heat sink		1
	MP6	8510014410	2507 RF plate Y611		1
	MP8	8930058060	Isolating plate (GZ)		1
	MP9	8930058010	Sermary sheat (AF) TC-100TKC (5X7)		1
	MP10	8930058070	2507 radiation plate		1
	MP11	8930053900	Isolating plate (GK)		1
	MP12	8930056030	Isolating plate (GS)		1
	MP13	8930004081	Ground spring (B)-1		1
	MP14	8930058540	2507 R-connect plate		1
	MP15	8930058520	2507 L-connect plate		1
	MP18	8930058530	2507 sheet		1
	MP19	8930058810	2507 spring	[USA], [CAN] only	1
	MP20	8930058510	Isolating plate (HC)		1

[VCO UNIT]

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

	MP1	8930058300	Aluminium sheet (AF)	1
	MP2	8930058610	Isolating plate (HD)	1

[AF UNIT]

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

	S251	7600000210	Encoder TP70N00E20-15F-1903	1
	MP2	8930058200	2507 A-AF sheet	1
	MP4	8510014850	2507 AF shield	1

[LOGIC UNIT]

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

DS4	5030001990	LCD TTR5169 UPFDHW		1
EP1	8930055190	LCD contact SRCN-2372-SP-N-W		1
SP1	2510000840	Speaker CS028014-12		1
MC1	7700002310	Microphone EM-140		1
MP1	8210018351	2372 front panel(E)-1		1
MP2	8310050400	2372 window plate		1
MP3	8210017460	2372 reflector		1
MP4	8930054221	2372 lens-1		1
MP5	8930054570	870 Salan net (A)		1
MP6	8930054500	2372 window sheet		1
MP7	8930054940	2372	LCD sponge	1
MP8	8930054380	2372	PTT plate	1
MP9	8930048840	2135	MIC sponge	1
MP10	8930046020	1123 sheet (A)-1		1
MP11	8930054250	2372	10-KEY	1
MP12	8930055170	2372 tact plate		1
MP13	8810009510	Screw PH BT M2⋅4 NI-ZU 6
MP14	8510013950	2372	LOGIC plate	1
MP15	8930058650	Isolating plate (HG)		1
W1	8900010520	Cable OPC-1033		1

Screw abbreviations

BT: Self-tapping PH: Pan head NI-ZU: Nickel-Zinc ZK: Black

[ACCESSORIES]

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

	EP1	3310002950	Antenna FA-S6270D		1
	EP2	0800005960	Battery BP-217 ACC		1
	EP3	5930001220	Charger BP-110AR	[USA], [CAN] only	1
		5930000950	Charger BC-110D	[GEN] only	1
	MP1	8010018080	Strap belt HK-009		1
	MP2	0880001120	Clip MB-83 ACC		1

EP2

MP2

MP1

EP1

EP3

7 - 1

Image 41

Icom IC-T90A manual Mechanical Parts and Disassembly, Chassis Parts, Accessories

Contents

IC-t90a Ordering Parts IntroductionRepair Notes Sample Order Table of Contents Transmitter SpecificationsGeneral Frequency MHz ReceiverWFM WFM Logic Unit Inside ViewsTop view Bottom view Top view Bottom view AF UnitRF Unit Removing the rear panel Removing the AF unit Disassembly Instructions Receiver Circuits Circuit Description RF Circuit 4 1ST Mixer and 1ST if Circuits RF, AF and VCO Units5 2ND if and Demodulator Circuits AF Unit 2ND if and Demodulator Circuit AF Amplifier Circuit AF UnitSquelch Circuitaf and Logic Units Transmitter Circuits APC Circuit RF Unit PLL CircuitsGeneral APC Circuit PLL Circuit VCO Divider Circuit VCO and RF Units 2 R3V Switch IC AF Unit IC51 Power Supply CircuitsPort Allocations Voltage Line CPU Logic Unit IC1 Dtcs CtselLCD SEG35 Operation on the Adjustment Mode Adjustment ProceduresOperation on the Output Power Adjustment Preparation AD-92SMA ConnectionJIG PLL Lock Trimmer AdjustmentVCO Voltage RF Unit VCO UnitL16 L456 L19 Reference Adjustment Mode AdjustmentsDial Frequency Adjustment Mode Adjustments PH ch 53.900 MHz Transmitting 8V 145 MHz Displayed frequency Connect an amme 45 a R325 Logic UnitR365 R326 Ctcss Tracking DetectorCoil CP0 AF UnitIC151, pin 12 SD line L151 Displayed frequency Connect a DC volt Maximum voltage Meter Adjustment Adjustment Condition Operation Order Description Section Parts List Coil Eljre 3N9Z-F Ceramic ECJ0EB1H681K Connector AXK6S30445P Ceramic ECJ0EC1H060C Encoder Trimmer Tantalum ECST1EY474R Ceramic ECJ0EC1H2R5B Chassis Parts Mechanical Parts and DisassemblyAccessories RF Unit Logic UnitChassis Parts AF Unit VCO Unit Transistors and Fets SEMI-CONDUCTOR InformationDiodes Name TOP View Board LayoutsMC1 Microphone DUP Bottom View Logic unitSP1 SQL PTT RF Unit RF unit EXT.SP EXT.MICREMOTO AF UnitVCO Unit S253S252 Logic Unit Block Diagram Loop LPF HPF Drive BPF ANT FIL AMP Chassis 11 1 Logic Unit Voltage Diagram IC5 2SK3476 11 2 RF Unit BU4094BCFV 11 3 AF Unit URL 32, Kamiminami, Hirano-ku, Osaka 547-0003, Japan