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Icom IC-F31GS, Servise Manual

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Icom IC-F31GS Servise Manual Download Page 30

Under side

Inside-2

Inside-1

Surface 

S1

CP3

R193

8

7

2

4

5 6

9

3

1

8

7

2

4

5

6

9

3

1

1
2

3

4

5

6

INT SP SW
AF VR
POWER SW

CH 
SELECT

PTT

MIC

XTXD

XRXD

RESET

MICE

DETECT

VCC

AFO

• BOTTOM VIEW

The combination of this page and the previous page
shows the unit layout in the same configuration as the
actual P.C. Board.  

9 - 4

MAIN UNIT

Summary of Contents for IC-F31GS

Page 1: ...VHF TRANSCEIVER iC f30gt iC f30gs iC f3 1 gt iC f3 1 gs...

Page 2: ......

Page 3: ...LL CIRCUITS 4 3 4 4 POWER SUPPLY CIRCUITS 4 4 4 5 CPU PORT ALLOCATIONS 4 4 SECTION 5 ADJUSTMENT PROCEDURES 5 1 PREPARATION 5 1 5 2 PLL ADJUSTMENT 5 4 5 3 SOFTWARE ADJUSTMENT 5 5 SECTION 6 PARTS LIST S...

Page 4: ...GENERAL EIA 152 C 204D or TIA 603 ETS 300 086 GEN 136 000 174 000 MHz 16K0F3E 25 kHz Wide 8K50F3E 12 5 kHz Narrow Max 256 ch 16 channels 16 banks 7 2 V DC negative ground supplied battery pack TX at H...

Page 5: ...ne switch IC19 BU4053BCF 2nd IF filter 450 kHz FI2 SFPCA450KE4A FI3 SFPCA450KG1A Discreminator X2 CDBCB450KCA24 450 kHz T5 regulator Q29 2SA1362 R5 regulator Q30 2SA1362 S5 regulator Q31 2SA1362 5 reg...

Page 6: ...ake off the flexible cable in the direction of the arrow e Unscrew 8 screws F 2 3 mm black to separate the shield plate q Unsolder 2 points G w Unscrew 2 nuts H e Unscrew 6 screws I 2 4 mm silver and...

Page 7: ...r circuit Q19 to produce a 31 65 MHz 1st IF signal The 1st IF signal is passed through a monolithic filter FI1 in order to obtain selection capability and to pass only the desired signals The filtered...

Page 8: ...signals even when noise squelch is open A portion of the AF signals from the FM IF IC IC3 pin 9 passes through the low pass filter IC20b a to remove AF voice signals and is applied to the CTCSS or DTC...

Page 9: ...e quency and receive 1st LO frequency The PLL output com pares the phase of the divided VCO frequency to the refer ence frequency The PLL output frequency is controlled by the divided ratio N data of...

Page 10: ...port for data signals from to EEPROMs IC16 IC24 Outputs beep audio signals Outputs clock signal to EEPROMs IC16 IC24 Outputs clock signal to the D A con verter IC27 SO DAST DTAC SENC CTDA SDEC RXDT A...

Page 11: ...desired IBM is a registered trademark of International Bussiness Machines Corporation in the U S A and other countries Microsoft and Windows are registered trademarks of Microsoft Corporation in the...

Page 12: ...1 18 V REF 112 70h 2 20V MOD BAL 90 5Ah 1 76 V Dev 45 2Dh 0 88 V CTCSS 76 4Ch 1 49 V SQL Lev 0 00h 1 18 V CH No 01 RX Freq 155 000 TX Freq RF Power Low1 Mode Wide Transceiver s connection state Reload...

Page 13: ...io generator Connection to the antenna connector RF power meter 0 1 10 W 50 Frequency counter Attenuator 40 dB or 50 dB FM deviation meter Standard signal generator 0 1 V to 32 mV 127 dBm to 17 dBm CA...

Page 14: ...smitting MAIN Connect a digital multi meter or an oscillo scope to the check point LV 1 2 V 1 0 V 3 0 4 5 V MAIN C372 C373 Verify ADJUSTMENT ADJUSTMENT CONDITIONS UNIT LOCATION VALUE UNIT ADJUST MEASU...

Page 15: ...ugh the JIG cable OPC 966 and set as 1 0 kHz 150 mVrms Transmitting IF bandwidth Narrow Transmitting Operating freq 155 000 MHz Output power Low1 IF bandwidth Wide CTCSS 88 5 Hz DTCS code 007 No audio...

Page 16: ...n nector and set as Frequency 136 000 MHz Level 14 V 84 dBm Modulation 1 kHz Deviation 3 5 kHz Receiving Set an SSG as Level 0 45 V 114 dBm Modulation 1 kHz Deviation 3 5 kHz Receiving Operating freq...

Page 17: ...CERAMIC ECJ0EB1A104K C3 4030016930 S CERAMIC ECJ0EB1A104K C4 4550006150 S TANTALUM ECST1CY105R C6 4550006150 S TANTALUM ECST1CY105R C7 4550006150 S TANTALUM ECST1CY105R C8 4550006150 S TANTALUM ECST1C...

Page 18: ...750000710 S VARICAP HVC350BTRF D21 1750000710 S VARICAP HVC350BTRF D22 1790001250 S DIODE MA2S111 TX D23 1790001250 S DIODE MA2S111 TX D24 1790000620 S DIODE MA77 TX D25 1790000620 S DIODE MA77 TX D26...

Page 19: ...47 R91 7030005050 S RESISTOR ERJ2GEJ 103 X 10 k R92 7030005240 S RESISTOR ERJ2GEJ 473 X 47 k R93 7030005240 S RESISTOR ERJ2GEJ 473 X 47 k R94 7030007300 S RESISTOR ERJ2GEJ 332 X 3 3 k R95 7030009320 S...

Page 20: ...TOR ERJ2GEJ 102 X 1 k R285 7030005050 S RESISTOR ERJ2GEJ 103 X 10 k R288 7030005050 S RESISTOR ERJ2GEJ 103 X 10 k R289 7030005090 S RESISTOR ERJ2GEJ 104 X 100 k R291 7030005090 S RESISTOR ERJ2GEJ 104...

Page 21: ...90 S CERAMIC ECJ0EB1C103K C114 4030016930 S CERAMIC ECJ0EB1A104K C115 4030013850 S CERAMIC ECUE1E102KBQ C116 4030014220 S CERAMIC ECUE1E471KBQ C117 4030013850 S CERAMIC ECUE1E102KBQ C118 4030013850 S...

Page 22: ...016930 S CERAMIC ECJ0EB1A104K C307 4030014180 S CERAMIC ECUE1H470JCQ C308 4030014180 S CERAMIC ECUE1H470JCQ C309 4030014180 S CERAMIC ECUE1H470JCQ C310 4030014180 S CERAMIC ECUE1H470JCQ C311 403001418...

Page 23: ...UE1E102KBQ C432 4030016930 S CERAMIC ECJ0EB1A104K C433 4030014180 S CERAMIC ECUE1H470JCQ C434 4030016930 S CERAMIC ECJ0EB1A104K C437 4030014090 S CERAMIC ECUE1H060CCQ C438 4030013850 S CERAMIC ECUE1E1...

Page 24: ...0100 Screw PH M2 x 4 ZK 2 MP53 8930053630 Seal O ring AH 1 MP54 8930053680 Spring AG 1 MP55 8810004890 Screw PH No 0 M2 6 ZK 2 MP56 8810005360 Screw PH No 0 M2 3 ZK 8 MP57 8810009560 Screw PH BT M2 6...

Page 25: ...P22 C MP37 C MP61 C MP19 C MP26 C MP20 C MP5 C MP57 C MP59 C MP41 C MP40 C MP40 C MP40 C MP1 F MP2 F MP3 F W1 F MC1 F MP60 C MP2 M MP6 M MP3 M MP49 C MP52 C MP52 C MP25 C MP59 C MP32 C MP33 C VR w SW...

Page 26: ...G D D S S TOP VIEW 2SK880 Y XY G S D 2SK2973 K1 G D S S B E C XP6501 AB 5N E1 B2 E2 C1 C2 B1 B E C 3SK206 T1 U78 U78 3SK293 UF D S G2 G1 UN911H 6P B E C XP1214 9H E1 B1 B2 C1 C2 NAME SYMBOL INSIDE VIE...

Page 27: ...age and the next page shows the unit layout in the same configuration as the actual P C Board Surface Inside 1 Inside 2 Under side 1 P0 P1 P2 P3 4 7 2 5 8 0 3 6 9 MICROPHONE 9 1 9 1 FRONT UNIT SECTION...

Page 28: ...1 D2 D3 D4 D5 D7 OSC0 OSC1 VSS PMODE VDD VEE CAP CAP VEE2 1 5 10 15 20 25 30 35 40 VOUT VR2 SCL WRB RDB D0 M86 VS TE RESB CSB RS M S P S V1 V2 V3 NC NC V0 V4 LCD PTT F2 F3 F3 F0 to MAIN unit J3 SPEAKE...

Page 29: ...TTERY R193 GND SPCN D0 FRST PTT D5 D4 D3 D2 D1 RDB WRB RS GND RESB VCC KR0 KR1 KR2 KR3 MIC SP GND 5V D7 D6 to FRONT unit J1 1 26 8 7 2 4 5 6 9 AFO VCC DETECT MICE RESET XRXD XTXD MIC PTT 3 1 8 7 2 BDE...

Page 30: ...3 1 8 7 2 4 5 6 9 3 1 1 2 3 4 5 6 INT SP SW AF VR POWER SW CH SELECT PTT MIC XTXD XRXD RESET MICE DETECT VCC AFO BOTTOM VIEW The combination of this page and the previous page shows the unit layout i...

Page 31: ...Q9 DTC144EU CPU BATT POWER SW FUSE VOXT TA75S01F F1 IC13 DA2 IC15 BEP1 BEP2 TONE VCC BEEP SSOR MCIN X4 Q47 2SC4081 MCOT CR 563 3 58 MHz REM MSKE TRD DIN REGS1 REGS2 RTM RDT FCLR D A IC27 M62334 SCL SD...

Page 32: ...CB13 PTIN PTIN AF FIL MCOT A MCIN VAG VAG MICI R186 68k R187 4 7k C226 0 047 C227 0 033 R188 100k 5V 5V R172 68k R189 470 Q45 UN911H C230 10 R185 120k Q27 2SC4213 R168 39k R184 12k L47 1 0 H B 3 2 1 1...

Page 33: ...7p C275 47p R232 12k D27 MA77 R329 10k X3 CR 681 12 288MHz R235 1k OPT22 OPT21 OPT23 SDA R237 1k C287 47p R236 1k R249 1k C273 47p OPT13 OPT11 OPT12 AUX MSCK MSO PB3 A11 TIOCD3 25 PB4 A12 TIOCA4 26 PE...

Page 34: ...188 47p C184 10 R136 6 8k VLOUT L41 EXCCL3225U1 R134 10 R135 10 C178 100 C179 0 047 C180 47p C181 10 R321 2 2k AFOUT CSFT XIN XOUT C288 47p C289 47p C293 47p R230 12k R231 12k C276 22p C278 0 01 W2 C2...

Page 35: ...dquarters 2380 116th Avenue N E Bellevue WA 98004 U S A Phone 425 454 8155 Fax 425 454 1509 URL http www icomamerica com Customer Service Phone 425 454 7619 Glenwood Centre 150 6165 Highway 17 Delta B...

Page 36: ......

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