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IC-756PRO
Service Manual Страница: 3

Icom IC-756PRO [3/120] Front cover

HF/50MHz ALL MODE TRANSCEIVER

SERVICE

MANUAL

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
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1 32 kamiminami hirano ku osaka 547 0003 japan 120
Back cover 120

Icom IC-756PRO [3/120] Front cover

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