Icom IC-756PRO Service Manual онлайн
GUIDE FOR CD
1) COMPOSITION
756PRO3.pdf
A3format.pdf
A4format.pdf
Instruction.pdf
Unitparts.pdf
ar505eng.exe
W_README.txt
2) DESCRIPTION
756PRO3.pdf
756PRO3.pdf is a service manual for IC-756PROIII and including all service information in this CD. This file is
mainly used for viewing on the computer display and checking page order to make printed service manual. Or
when you want to find a component, you can find very fast using “FIND” function (except Board layout).
A3format.pdf
A3format.pdf consists of A3 format pages (Board layout, Mechanical parts and disassembly, and etc.) in
756PRO3.pdf. This file is used for printing out A3 format pages.
A4format.pdf
A4format.pdf consists of A4 format pages (Circuit description, Adjustment procedures, Parts list, and etc.) in
756PRO3.pdf. This file is used for printing out A4 format pages.
Instruction.pdf
Instruction.pdf is a instruction manual for IC-756PROIII. This file is exactly same as supplying instruction
manual withproduct and consists of all A4 format pages. If you have A4 format printer, you can print out and
make brand new instruction manual any time you want. Also this fi le is very helpful when you want to change
or set product conditionfor adjustment or else.
Unitparts.pdf
Unitparts.pdf is assemble unit information for IC-756PROIII. This information for authorized dis-tributor/dealer
only. Because we (ICOM INC.) don’t sell assemble unit to general.
ar505eng.exe
ar505eng.exe is an installation program of Adobe Acrobat
®
Reader 5.0 (English version) for Microsoft
®
Windows
®
95/98/Me/NT/2000/XP users.
FYC
Installer
IC_756PRO3
1
Содержание
- Ic_756pro3 1
- W_readme txt 2
- Front cover 3
- Danger 4
- Introduction 4
- Ordering parts 4
- Repair notes 4
- Section 1 specifications 5
- Section 10 voltage diagrams 5
- Section 2 inside views 5
- Section 3 circuit description 5
- Section 4 adjustment procedures 5
- Section 5 parts list 5
- Section 6 mechanical parts and disassembly 5
- Section 7 semi conductor information 5
- Section 8 board layouts 5
- Section 9 block diagram 5
- Table of contents 5
- Antenna tuner 6
- General 6
- Receiver 6
- Section 1 specifications 6
- Specifications 6
- Transmitter 6
- Inside views 7
- Section 2 inside views 7
- Top view 7
- Bottom view 8
- 1 0 3 1 mhz rf b unit the signals pass through the low pass filter l801 l802 c802 c805 c807 attenuator r801 r803 and are then applied to the rf amplifi ers q1001 q1002 9
- 1 1 rf switching circuit ctrl a and rf b units 9
- 1 2 rf bandpass filter circuit rf b unit and bpf a board 9
- 1 3 pre amplifier circuits priamp board 9
- 1 4 rf amplifier and 1st mixer circuits rf b unit 9
- 1 receiver circuit 9
- 2 1 60 mhz rf b unit and bpf a board the signals pass through the band switch d104 and high pass filter l251 l253 c251 c252 c271 c274 to sup press excessively strong signals below 1 mhz the fi ltered signals are applied to one of 11 bandpass fi lters on the table at right above and then applied to or bypassed the pre amplifi er circuit 9
- Circuit description 9
- Each 1st lo signal 64 850 124 550 mhz from the pll unit via j1101 or j1301 the lo signals are amplifi ed at the lo amplifi er q1101 sub or q1301 main fi ltered by a low pass fi lter and then applied to each 1st mixer 9
- Receive circuits 9
- Receiver construction 9
- Rf bandpass fi lters pass only the desired band signals and suppress any undesired band signals the rf circuit has 11 bandpass fi lters and 1 low pass fi lter 9
- Rf signals from ant 1 or ant 2 pass through the an tenna selector rl3 transmit receive switching relays rl1 rl2 rl4 and low pass fi lter l27 l28 c63 c66 c105 and are then applied to the rf b unit via j101 rf b unit 9
- Section 3 circuit description 9
- The 1st mixer circuit mixes the receive signals with the 1st lo signal to convert the receive signal frequencies into a 64 55 mhz 1st if signal the ic 756proiii has two 1st mixer circuits for the dualwatch function 9
- The ic 756proiii has 2 gain levels of pre amplifi er circuits one has 10 db gain for the 1 21 mhz bands and the other one has 16 db gain for the upper 24 mhz bands 9
- The rf switching circuit leads receive signals to bandpass fi lters from an antenna connector while receiving however the circuit leads the signal from the rf power amplifier to the antenna connector while transmitting 9
- The signals from the ctrl a unit either bypass or pass through the 6 db rf b unit r102 r106 r111 rl102 and or 12 db rf b unit r112 r113 r114 rl103 attenuators via the antenna selector rl101 by selecting the attenuators 0 bypass 6 12 and 18 db attenuations are obtained the signals are then applied to the rf fi lters 9
- The signals from the pre amplifier circuit or signals which bypass the pre amplifi ers are divided at l902 l903 each signal is applied to a 60 mhz cut off low pass fi lter rf am plifi er q1001 q1002 for sub readout or q1201 q1202 for main readout and then to a 1st mixer q1003 q1006 sub readout or q1203 q1206 for main readout to convert the frequency into the 64 55 mhz 1st if signal 9
- Used rf fi lter 9
- When the p amp switch is set to p amp 1 or p amp 2 the signals are applied to the pre amplifier 1 q4201 q4202 or pre amplifi er 2 q4302 circuit respectively pre amplifi ed or bypassed signals are applied to the rf amplifi er circuits rf b unit q1001 q1002 or q1201 q1202 9
- When the rx ant is selected the rf signals are passed through the low pass filter rf b unit l101 l102 c101 c105 then applied to the antenna selector rf b unit rl101 9
- 1 10 dsp receiver circuit dsp a board 10
- 1 5 1st if circuit rf b unit 10
- 1 6 2nd mixer circuit rf b unit 10
- 1 7 noise blanker circuit main a unit 10
- 1 8 2nd if circuit main a unit 10
- 1 9 3rd mixer and 3rd if circuits main a unit 10
- Dsp receiver circuit 10
- 1 11 twin pbt circuit dsp a board 11
- 1 12 agc circuit dsp a board 11
- 1 13 s meter circuit main a unit 11
- 1 14 squelch circuit main a unit 11
- 1 15 af amplifier circuit main a unit 11
- Af amplifier circuit 11
- 2 1 microphone amplifier circuit main a unit 12
- 2 2 vox circuit main a unit 12
- 2 3 dsp transmitter circuit dsp a board 12
- 2 transmitter circuits 12
- Dsp transmitter circuit 12
- Transmitter circuits 12
- 2 4 speech compressor circuit dsp a board 13
- 2 5 if amplifier and mixer circuits main a and rf b units 13
- 2 6 rf circuit rf b and pa units 13
- 2 7 low pass filter circuit filter a unit 13
- 2 8 alc circuit main a unit 13
- 2 10 temperature protection circuit pa unit 14
- 2 11 monitor circuit dsp a board and main a unit 14
- 2 9 apc circuit main a unit 14
- 3 1 general 14
- 3 2 1st lo pll circuit 14
- 3 pll circuits 14
- Pll circuits 14
- 1 reference loop pll the oscillated signal at the reference vco q151 d151 is amplified at the buffer amplifiers q102 q152 and is then applied to the dds ic ic101 pin 46 the signal is then divided and detected on phase with the dds generated frequency 15
- 2 main loop pll the oscillated signal at one of the main loop vcos q201 d201 d202 q221 d221 d222 q251 d251 d254 and q271 d271 d274 is amplified at the buffer amplifi ers q301 ic320 and is then applied to the pll ic ic381 pin 6 via the low pass filter l303 c304 c307 the signal is then divided and detected on phase with the reference loop output frequency 15
- 3 3 2nd lo and reference oscillator circuits 15
- 3 4 3rd lo circuit 15
- 3 5 marker circuit 15
- Main a unit 15
- Pll circuit 15
- Pll unit 15
- Rf b unit 15
- The dds ic ic701 generates a 10 bit digital signal using the 32 mhz system clock the digital signal is converted into an analog wave signal at the d a converter r701 r720 the converted analog wave is passed through the bandpass filter l702 l703 c709 c713 and then applied to the main a unit as the 3rd lo signal 15
- The detected signal output from the dds ic ic101 pin 56 is converted into dc voltage lock voltage at the loop filter r135 r137 c121 c151 and then fed back to the reference vco circuit q151 d151 15
- The detected signal output from the pll ic ic381 pin 2 is converted into a dc voltage lock voltage at the loop filter and then fed back to one of the vco circuits q201 d201 d202 q221 d221 d222 q251 d251 d254 and q271 d271 d274 15
- The divided signal at the dds circuit ic101 is used for the marker signals with the ic 756proiii 15
- The generated marker signals are output from pin 66 of the dds ic ic101 and are then applied to the rf b unit via the mute switch ic192 and j851 as the mkr signal 15
- The oscillated signal is amplified at the buffer amplifiers q301 ic320 and then applied to the rf b unit as a 1st lo a signal after being passed through the low pass filters l303 c304 c307 and l351 l353 c351 c356 and high pass filter l354 c358 c360 and mute circuit d361 15
- The reference oscillator x52 q51 generates a 32 mhz frequency for the 4 dds circuits as a system clock and for the lo output the oscillated signal is doubled at the doubler circuit q71 q81 and the 64 mhz frequency is picked up at the double tuned filter l81 l82 the 64 mhz signal is applied to the rf b unit as a 2nd lo signal 15
- The reference signal for the dds circuit 32 mhz is divided to produce an acceptable frequency signal 16 mhz with the programmable divider then divided again by 160 to obtain 100 khz cycle square wave signals 15
- 4 1 matching circuit tuner a unit 16
- 4 2 detector circuit ctrl a unit 16
- 4 3 motor control circuit ctrl a and tuner a units 16
- 4 antenna tuner circuits 16
- 4 antenna tuner cpu port allocation ctrl a unit ic5 16
- Antenna tuner circuits 16
- 5 1 scope receiver circuit rf b unit 17
- 5 2 sweep lo circuit pll unit 17
- 5 scope circuits 17
- 6 1 pa unit 17
- 6 2 front unit 17
- 6 power supply circuits 17
- Power supply circuits 17
- Rf b unit 17
- Scope circuit diagram 17
- Scope circuits 17
- 6 3 main a unit 18
- 6 4 ctrl a and pll units 18
- 7 2 sub cpu port allocations display board ic401 18
- 7 logic circuits 18
- Logic circuits 18
- 7 3 main cpu port allocations main a unit ic3501 19
- 2 main a unit ic3652 20
- 2 pll unit ic101 20
- 3 pll unit ic401 20
- 7 4 input expander allocations 1 display board ic411 20
- 7 5 output expander allocations 1 pll unit ic1 20
- 4 ctrl a board ic11 21
- 5 rf b unit ic401 21
- 6 rf b unit ic402 21
- 7 rf b unit ic403 21
- Rans output the rx antenna select signal 21
- 11 main a unit ic3753 22
- 8 main a unit ic3653 10 main unit ic3752 22
- 9 main a unit ic3654 22
- 1 preparation 23
- Adjustment procedures 23
- Caution 23
- Preparation 23
- Section 4 adjustment procedures 23
- 2 pll adjustments 24
- Adjustment 24
- Adjustment adjustment condition measurement value point 24
- Pll adjustments 24
- Unit unit location unit adjust 24
- Pll adjustments continued 25
- Pll unit 25
- 3 transmitter adjustments 26
- Adjustment adjustment condition measurement value adjustment point 26
- Transmitter adjustments 26
- Unit location unit adjust 26
- Main a unit 27
- Pa unit 27
- Rf b unit 27
- Adjustment 28
- Adjustment adjustment condition measurement value point 28
- Transmitter adjustments continued 28
- Unit unit location unit adjust 28
- Dsp a board 29
- Main a unit 29
- 4 receiver adjustments 30
- Adjustment adjustment condition measurement value 30
- Adjustment point 30
- Receiver adjustments 30
- Unit location unit ad just 30
- Main a unit 31
- Rf b unit 31
- Adjustment 32
- Adjustment adjustment condition measurement value point 32
- Receiver adjustments continued 32
- This output level of a standard signal generator ssg is indicated as ssg s open circuit 32
- Unit unit location unit adjust 32
- Main a unit 33
- Rf b unit 33
- 5 tuner adjustments 34
- Adjustment condition display operation 34
- Ctrl a unit 34
- Tuner adjustments 34
- Tuner ok 34
- 6 meter adjustment s 35
- Adjust mode 35
- Caution neve 35
- Meter adjustments 35
- Meter power s 20 35
- Meter power s9 40 35
- Meter scale s1 35
- Meter scale s3 35
- Meter scale s5 35
- Meter scale s7 35
- Meter scale s9 35
- Meter scale s9 60 35
- Tx power 0 35
- Tx power hf 10 35
- Tx power hf 100 35
- Tx power hf 25 35
- Tx power hf 50 35
- Tx power hf tuner 35
- Adjustment adjustment condition display 36
- Meter adjustment s contnued 36
- Rx s0 level 36
- Rx scope l4 36
- Tx alc 36
- Tx drive 36
- Tx power 50m 10 36
- Tx power 50m 100 36
- Tx power 50m 25 36
- Tx power 50m 50 36
- Tx power 50m tuner 36
- Tx s9 60 level 36
- Tx s9 level 36
- Tx swr 36
- Display unit 37
- Front unit 37
- Parts list 37
- S surface mount 37
- Section 5 parts list 37
- Display unit display unit 38
- M mounted side t mounted on the top side b mounted on the bottom side 38
- S surface mount 38
- Display unit display unit 39
- M mounted side t mounted on the top side b mounted on the bottom side 39
- S surface mount 39
- M mounted side t mounted on the top side b mounted on the bottom side 40
- Mode unit 40
- Pbt unit 40
- Rit unit 40
- S surface mount 40
- Ten key unit 40
- Ten key unit mode unit 40
- Key unit 41
- M mounted side t mounted on the top side b mounted on the bottom side 41
- Mic unit 41
- Phone unit 41
- Pll unit 41
- S surface mount 41
- M mounted side t mounted on the top side b mounted on the bottom side 42
- Pll unit pll unit 42
- S surface mount 42
- M mounted side t mounted on the top side b mounted on the bottom side 43
- Pll unit pll unit 43
- S surface mount 43
- M mounted side t mounted on the top side b mounted on the bottom side 44
- Pll unit pll unit 44
- S surface mount 44
- M mounted side t mounted on the top side b mounted on the bottom side 45
- Pll unit pll unit 45
- S surface mount 45
- M mounted side t mounted on the top side b mounted on the bottom side 46
- Pa unit 46
- Pll unit pa unit 46
- S surface mount 46
- M mounted side t mounted on the top side b mounted on the bottom side 47
- Memory unit 47
- Pa unit pa unit 47
- S surface mount 47
- M mounted side t mounted on the top side b mounted on the bottom side 48
- Main a unit 48
- Main a unit main a unit 48
- S surface mount 48
- M mounted side t mounted on the top side b mounted on the bottom side 49
- Main a unit main a unit 49
- S surface mount 49
- M mounted side t mounted on the top side b mounted on the bottom side 50
- Main a unit main a unit 50
- S surface mount 50
- M mounted side t mounted on the top side b mounted on the bottom side 51
- Main a unit main a unit 51
- S surface mount 51
- M mounted side t mounted on the top side b mounted on the bottom side 52
- Main a unit main a unit 52
- S surface mount 52
- M mounted side t mounted on the top side b mounted on the bottom side 53
- Main a unit main a unit 53
- S surface mount 53
- Dsp a unit 54
- M mounted side t mounted on the top side b mounted on the bottom side 54
- Main a unit dsp a unit 54
- S surface mount 54
- Dsp a unit dsp a unit 55
- M mounted side t mounted on the top side b mounted on the bottom side 55
- S surface mount 55
- Dsp a unit dsp a unit 56
- M mounted side t mounted on the top side b mounted on the bottom side 56
- S surface mount 56
- Dsp a unit rf b unit 57
- M mounted side t mounted on the top side b mounted on the bottom side 57
- Rf b unit 57
- S surface mount 57
- M mounted side t mounted on the top side b mounted on the bottom side 58
- Rf b unit rf b unit 58
- S surface mount 58
- M mounted side t mounted on the top side b mounted on the bottom side 59
- Rf b unit rf b unit 59
- S surface mount 59
- M mounted side t mounted on the top side b mounted on the bottom side 60
- Rf b unit rf b unit 60
- S surface mount 60
- M mounted side t mounted on the top side b mounted on the bottom side 61
- Rf b unit rf b unit 61
- S surface mount 61
- Bpf a unit 62
- M mounted side t mounted on the top side b mounted on the bottom side 62
- Rf b unit rf b unit 62
- S surface mount 62
- Bpf a unit 63
- M mounted side t mounted on the top side b mounted on the bottom side 63
- Preamp unit 63
- S surface mount 63
- Ctrl a unit 64
- M mounted side t mounted on the top side b mounted on the bottom side 64
- S surface mount 64
- Tuner a unit 64
- Tuner a unit tuner a unit 64
- Ctrl a unit ctrl a unit 65
- M mounted side t mounted on the top side b mounted on the bottom side 65
- S surface mount 65
- Ctrl a unit ctrl a unit 66
- Filer a unit 66
- Filter a unit 66
- M mounted side t mounted on the top side b mounted on the bottom side 66
- S surface mount 66
- Chassis unit 67
- Filer a unit filer a unit 67
- M mounted side t mounted on the top side b mounted on the bottom side 67
- S surface mount 67
- Display board 68
- Front parts 68
- Key board 68
- Mechanical parts 68
- Mic board 68
- Note refer to section 8 68
- Order no ref no description qty 68
- Pbt board 68
- Phone board 68
- Rit board 68
- Section 6 mechanical parts and disassembly 68
- J662 m 69
- J701 m j691 m 69
- Mp1 f mp5 f mp19 f 69
- Mp10 f 69
- Mp11 f 69
- Mp12 f 69
- Mp13 f 69
- Mp14 f 69
- Mp15 c j5 c 69
- Mp15 c j6 c 69
- Mp20 c 69
- Mp21 c 69
- Mp29 f mp11 f 69
- Mp38 c 69
- Mp39 c 69
- Mp40 c j681 m j661 m j351 m 69
- Mp43 c mp42 c mp45 c mp44 c 69
- Mp51 f mp52 f 69
- Mp6 f mp11 f 69
- Ctrl a unit 70
- Dsp a board 70
- Filter a unit 70
- Main a unit 70
- Pa unit 70
- Pll unit 70
- Preamp board bpf a board 70
- Rf b unit 70
- Tuner a board 70
- Accessories 71
- Binding hea 71
- Chassis parts 71
- Ctrl a unit 71
- Dsp a board 71
- Main a unit 71
- Note refer to section 8 71
- Order no ref no description qty 71
- Pll unit 71
- Rf b unit 71
- Screw abbreviations bt b0 self tapping ph pan head fh flat head bih 71
- Tuner a unit 71
- Zk black bs brass ni nickel cr chrome ni zu nickel zinc 71
- Dtb123 ek t146 dtc114 ee tl dtc114eua t106 dtc144 ee tl dtc144 te 72
- Mmbfu310lt1 umd3n umh4n tn umh11n tn unr911hj 72
- Sa1576a t106 r 2sa1577 t106 q 2sb1124 s td 2sb1132 t100 r 2sb1201 s 72
- Sc1971 2sc1972 2sc2714 o 2sc3647 s td 2sc4081 t106 r 72
- Sc4117 gr 2sc4213 b 2sc4403 3 tl 2sc4405 3 tl 2sc5125 72
- Sc5551 2sd1585 k 2sd1619 t td 2sd1801 s tl 2sj381 td 72
- Section 7 semi conductor information 72
- Semi conductor information 72
- Sk131 t2 mas cph3404 tl dta114 ee tl dta114eua t106 dta144 ee tl 72
- Sk210 gr 2sk508 k52 t2b 2sk515 t1b 2sk882 gr 2sk1740 72
- Symbol 6c symbol d3 symbol h4 symbol h11 symbol 6p 72
- Symbol 8a symbol 3x 72
- Symbol dg symbol ab symbol ly3 symbol oy3 72
- Symbol eb symbol none symbol db symbol ce symbol ji 72
- Symbol f12 symbol 24 symbol 24 symbol 26 symbol 06 72
- Symbol fr symbol hq symbol bg symbol bar symbol b1201 72
- Symbol none symbol none symbol qo symbol cc symbol br 72
- Symbol v11 symbol kd symbol 14 symbol 14 symbol 16 72
- Symbol yg symbol k52 symbol x33 symbol tgr symbol ij 72
- Transistors and fet s 72
- Unr9211j xp4311 72
- Diodes 73
- 1 display board 74
- Board layouts 74
- Display board 74
- Section 8 board layouts 74
- Top view 74
- Af rf sql 75
- Bal nr 75
- Bk in delay 75
- Display board bottom view 75
- Key speed 75
- Mic gain 75
- Rf power 75
- Transmit 75
- Tuner monitor 75
- 2 mode board 76
- 3 phone board 76
- 4 key board 76
- 5 ten key board 76
- Gnd 10 9 76
- Gnd gnd gnd dot 76
- Mode phone key ten key boards 76
- Phe 10 9 76
- Phe gnd gnd gnd 76
- Phones elec key 76
- To display board j921 76
- To display board j941 76
- Top view 76
- Key board bottom view 77
- Mode board bottom view 77
- Phone board bottom view 77
- Ten key board bottom view 77
- 6 pbt board 78
- 7 rit board 78
- 8 mic board 78
- 9 memory board 78
- Notch cw pitch pbt1 pbt2 78
- Pbt rit mic memory boards 78
- Top view 78
- 10 15 0 25 30 20 79
- Horizontal 79
- Memory board bottom view 79
- Mic board bottom view rit board bottom view 79
- Pbt board bottom view 79
- Vertical 79
- 10 main a unit 80
- Main a unit 80
- Top view 80
- 7 6 10 81
- Main a unit bottom view 81
- 11 dsp a board 82
- Dsp a board 82
- Top view 82
- Dsp a board bottom view 83
- 12 rf b unit 84
- Rf b unit 84
- Top view 84
- Mp2102 85
- Rf b unit bottom view 85
- 10 15 0 25 30 35 20 vertical 86
- 13 bpf a board 86
- 14 preamp board 86
- Bpf a preamp boards 86
- Horizontal 86
- Top view 86
- 10 15 0 25 30 35 20 87
- Bpf a board bottom view 87
- Horizontal 87
- Preamp board bottom view 87
- Vertical 87
- 15 pll unit 88
- 16 to main a unit j841 88
- Gnd 1 2 88
- Lo p81 to rf b unit j1801 88
- Mkr p851 to rf b unit j951 88
- Nc 14v psel con1 dres 5v nc 88
- Pll unit 88
- S2lo p901 88
- To main a unit j211 88
- To rf b unit j1101 1lob p651 88
- To rf b unit j1301 1loa p351 88
- To rf b unit j2001 88
- To rf b unit j2101 88
- Top view 88
- Pll unit bottom view 89
- 1 to chassis mf1 90
- 16 pa unit 90
- Ich 8v 90
- Icl h5v 8v 14va 14v 14v 14v 5v hv gnd gnd gnd gnd gnd 90
- Pa unit 90
- To filter a unit j1 pao p2 90
- To filter a unit to filter a unit 90
- To main a unit j771 90
- To rf b unit j201 pai p1 90
- Top view 90
- Va 14v 14v 14v 14v 5v nc gnd gnd gnd gnd gnd 90
- Pa unit bottom view 91
- 17 filter a unit 92
- Ctin p1 from ctrl a unit j1 92
- Filter a unit 92
- Gnd l7s l6s l1s l4s 92
- L8s l3s l5s l2s 92
- Pao p2 from pa unit j2 92
- To chassis w15 92
- To ctrl a unit j13 92
- To pa unit ep4 92
- To pa unit ep5 92
- Top view 92
- Filter a unit bottom view 93
- 18 ctrl a unit 94
- Ant1 ant2 94
- Ctrl a unit 94
- Top view 94
- Ctrl a unit bottom view 95
- 19 tuner a board 96
- M 10m 18m vhf gnd 14v co2 nvhf ci2 gnd 96
- M 7m 14m 24m gnd 14v co3 co1 ci3 ci1 gnd 96
- To ctrl a unit j8 96
- Top view 96
- Tuin p3 to ctrl a unit j3 96
- Tuner a unit 96
- Tuot p4 to ctrl a unit j4 96
- Tuner a board bottom view 97
- A board 98
- A unit rf b unit 98
- Block diagram 98
- Display board 98
- Key board 98
- Memory board 98
- Mic board 98
- Mode board 98
- Pbt board 98
- Phone board 98
- Pll unit 98
- Rit board 98
- Section 9 block diagram 98
- Ten key board 98
- A unit 99
- A unit pa unit 99
- B unit 99
- Chassis 99
- 1 front unit 100
- Display board 100
- Front unit 100
- Mode board 100
- Rit board 100
- Section 10 voltage diagrams 100
- Ten key board 100
- Voltage diagram 100
- Display board 101
- Explanatory notes 101
- Key board 101
- Mic board 101
- Pbt board 101
- Phone board 101
- 2 dsp a board 102
- Dsp a board 102
- Explanatory notes 102
- Dsp a board 103
- Explanatory notes 103
- 3 tuner a memory boards and ctrl a unit 104
- A board 104
- A unit 104
- Memory board 104
- Tuner a memory boards and ctrl a unit 104
- A unit 105
- Explanatory notes 105
- 4 main a unit 106
- 5v r8v 106
- Alc agc 106
- Alc t8v 106
- Gnd 8v_ 106
- Gnd gnd 106
- Gnd gnd agc 106
- Gnd gnd gnd gnd 106
- H5v 8v t8v 14v 106
- H5v ich icl 106
- Main a unit 106
- Main a unit 1 106
- T8v alc 106
- Tmd spe afo spe 106
- V 14v 14v 106
- V_ gnd 106
- Explanatory notes 107
- Main a 2 107
- Main a unit 1 107
- Bu4053bcfv ic3002 108
- Bu4053bcfv ic3005 108
- Bu4053bcfv ic3631 108
- Dta114ee q3002 108
- Explanatory notes 108
- Fzrs fzvp 108
- Gnd out in in 108
- Int rac 108
- Isd4003 04ms ic3001 108
- K r322 120k r323 108
- K r324 108
- K r622 108
- M5282fp ic3003 108
- Main a 1 108
- Main a unit 2 108
- Mice misl 108
- Njm4558m ic3004a 108
- Njm4558m ic3004b 108
- Njm4558m ic321a 108
- Pwrs seni 108
- R8v t8v 108
- Reco reaf 108
- Refl nsqo forl 108
- Sc4081 q602 108
- Sc4081 q612 108
- Sclk vccd xclk 108
- Sd1619 q601 108
- Sd1619 q611 108
- T8v r8v 108
- Umh11n q622 108
- Vosl mosl 108
- Voxl scpl 108
- Vrac vint 108
- Vsdd miso mosi 108
- Vss vee inh 108
- Vssa vssa 108
- Explanatory notes 109
- Main a unit 2 109
- Voltage line 109
- Explanatory notes 110
- Main a unit 2 110
- Voltage line 110
- 5 pll unit 111
- Explanatory notes 111
- Pll unit 111
- Explanatory notes 112
- Pll unit 112
- Voltage line 112
- Explanatory notes 113
- Pll unit 113
- Voltage line 113
- 6 pa and filter a units 114
- A unit 114
- Pa and filter a units 114
- Pa unit 114
- A board 115
- A unit 115
- B unit 115
- Display board 115
- Explanatory notes 115
- Key board 115
- Main dial 115
- Memory 115
- Mic board 115
- Mode board 115
- Pbt board 115
- Phone board 115
- Pll unit 115
- Pre amp 115
- Rit board 115
- 7 bpf a preamp boards and rf b unit 116
- Bpf a pre amp boards and rf b unit 116
- Explanatory notes 116
- Rf b unit 116
- Bpf a board preamp board 117
- Explanatory notes 117
- Rf b unit 117
- Voltage line 117
- Explanatory notes 118
- Rf b unit 118
- Voltage line 118
- 1 32 kamiminami hirano ku osaka 547 0003 japan phone 81 06 6793 5302 fax 81 06 6793 0013 url http www icom co jp world index html 119
- Address 119
- Asia icom inc 119
- Beijing icom ltd 119
- Icom america inc 119
- Icom australia pty ltd 119
- Icom canada 119
- Icom europe gmbh 119
- Icom france s a 119
- Icom new zealand 119
- Icom polska 119
- Icom spain s l 119
- Icom uk ltd 119
- 1 32 kamiminami hirano ku osaka 547 0003 japan 120
- Back cover 120
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