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6 - 4

M.=Mounted side (T: Mounted on the Top side, B: Mounted on the Bottom side)

S.=Surface mount

 REF 

ORDER 

DESCRIPTION 

M. 

H/V

 NO. 

NO. 

 

  LOCATION

[MAIN UNIT]

 REF 

ORDER 

DESCRIPTION 

M. 

H/V

 NO. 

NO. 

 

  LOCATION

[MAIN UNIT]

C32 

4030009920  S.CER  C1608 CH 1H 050B-T 

  T 

62.3/49.6

C33 

4030007050  S.CER  C1608 CH 1H 220J-T 

  T 

64.2/42.8

C34 

4030007060  S.CER  C1608 CH 1H 270J-T 

  T 

62.4/45

C35 

4030007060  S.CER  C1608 CH 1H 270J-T 

  T 

69.6/37.3

C36 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

66.1/35.3

C41 

4030007080  S.CER  C1608 CH 1H 390J-T 

  T 

51.9/55.7

C42 

4030007090  S.CER  C1608 CH 1H 470J-T 

  T 

51.9/54.3

C43 4550006130 

S.TAN 

ECST1VY224R 

 

59.9/56.9

C44 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

61.6/58.4

C45 

4030009540  S.CER  C1608 CH 1H 1R5B-T 

  T 

53.5/50.4

C46 

4030009540  S.CER  C1608 CH 1H 1R5B-T 

  T 

50.8/50.4

C47 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

53.5/49

C48 

4030011340  S.CER  C1608 CH 1H 471J-T 

  T 

50.6/45.2

C49 

4030011340  S.CER  C1608 CH 1H 471J-T 

  T 

57.2/46.6

C51 

4030009560  S.CER  C1608 CH 1H R75B-T 

  T 

56.2/50.4

C52 

4030011340  S.CER  C1608 CH 1H 471J-T 

  T 

58.6/53.4

C55 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

65.4/52.2

C56 

4030011770  S.CER  C1608 CH 1H 060B-T 

  T 

64.3/50.6

C57 

4030011340  S.CER  C1608 CH 1H 471J-T 

  T 

65.4/53.5

C58 

4030007050  S.CER  C1608 CH 1H 220J-T 

  T 

65.4/59.2

C75 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

74.6/58.9

C77 

4030009920  S.CER  C1608 CH 1H 050B-T 

  T 

77.1/61.5

C80 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

43.4/77.4

C81 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

58.3/69.6

C82 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

55.7/70.9

C83 

4030007090  S.CER  C1608 CH 1H 470J-T 

  T 

55.6/66.8

C84 

4030007040  S.CER  C1608 CH 1H 180J-T 

  T 

55/68.9

C85 

4030007040  S.CER  C1608 CH 1H 180J-T 

  T 

52.5/74.5

C86 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

48.7/74.4

C87 

4030007090  S.CER  C1608 CH 1H 470J-T 

  T 

49/77.9

C88 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

49/79.2

C91 

4030007040  S.CER  C1608 CH 1H 180J-T 

  T 

50/69.6

C92 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

39.1/56.7

C93 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

43.4/78.7

C94 

4030009530  S.CER  C1608 CH 1H 030B-T 

  T 

45.9/71.1

C95 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

46.2/77.4

C96 

4030007090  S.CER  C1608 CH 1H 470J-T 

  T 

46.2/78.7

C97 

4030011340  S.CER  C1608 CH 1H 471J-T 

  T 

46.2/80

C101 

4030007050  S.CER  C1608 CH 1H 220J-T 

  T 

43.1/72.5

C102 

4030007040  S.CER  C1608 CH 1H 180J-T 

  T 

41.4/78.2

C103 

4030007080  S.CER  C1608 CH 1H 390J-T 

  T 

40.1/78.2

C104 

4030007040  S.CER  C1608 CH 1H 180J-T 

  T 

41.4/81.8

C105 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

60/75.7

C106 

4030011600  S.CER  C1608 JB 1E 104K-T 

  T 

64.4/78.5

C107 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

65/74

C108 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

60/72.9

C109 4510004630 

S.ELE 

ECEV1CA100SR 

 

56.2/74.7

C111 

4030007090  S.CER  C1608 CH 1H 470J-T 

  T 

69/82.6

C112 

4030011340  S.CER  C1608 CH 1H 471J-T 

  T 

71/82.1

C113 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

72.3/82.1

C114 

4030011600  S.CER  C1608 JB 1E 104K-T 

  T 

73.6/82.1

C115 

4030011600  S.CER  C1608 JB 1E 104K-T 

  T 

59.1/79.7

C116 

4030007010  S.CER  C1608 CH 1H 100D-T 

  T 

57.8/79.7

C117 

4030007170  S.CER  C1608 CH 1H 221J-T 

  T 

61.1/80.5

C118 4510005310 

S.ELE 

ECEV1CA220SR 

 

68/78.3

C119 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

66/69.3

C120 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

69.4/68.1

C121 

4010005500  CER 

HM60SJ CH 150J 500V 

 

C122 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

81.3/82.1

C123 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

85.2/75.2

C124 

4010005500  CER 

HM60SJ CH 150J 500V 

 

C125 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

85.9/71.9

C126 

4010005790  CER 

HM60SJ YB 102K 500V 

 

C127 

4010008050  CER 

HM60SJ CH 180J 500V 

 

C128 

4010005440  CER 

HM60SJ CH 060D 500V 

 

C129 

4010008070  CER 

HM60SJ CH 220J 500V 

 

C130 

4010005430  CER 

HM60SJ CH 050C 500V 

 

C132 

4010005430  CER 

HM60SJ CH 050C 500V 

 

C133 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

73/78.3

C134 

4030006900  S.CER  C1608 JB 1H 103K-T 

  T 

68.5/74

C136 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

71.4/72.5

C138 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

83.2/76.8

C139 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

80.6/74.1

C140 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

76.3/74.8

C142 

4010007630  CER 

HM60SJ CH 270J 500V 

 

C148 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

112.9/61.6

C149 

4030009500  S.CER  C1608 CH 1H 0R5B-T 

  T 

113.4/58.4

C150 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

120.6/58.2

C151 

4030007010  S.CER  C1608 CH 1H 100D-T 

  T 

119.3/55.2

C152 

4030007010  S.CER  C1608 CH 1H 100D-T 

  T 

120.6/55.2

C153 

4030009920  S.CER  C1608 CH 1H 050B-T 

  T 

113/51.5

C154 

4030011770  S.CER  C1608 CH 1H 060B-T 

  T 

113.3/57.1

C155 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

111.4/60.3

C156 

4030011600  S.CER  C1608 JB 1E 104K-T 

  T 

107.4/59.5

C157 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

109.5/47.9

C158 

4030006900  S.CER  C1608 JB 1H 103K-T 

  T 

113.3/55.8

C159 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

111.6/47.9

C160 

4030011600  S.CER  C1608 JB 1E 104K-T 

  T 

109.8/55

C161 

4030009350  S.CER  C1608 CH 1H 3R5B-T 

  T 

102.6/55.7

C162 

4030011770  S.CER  C1608 CH 1H 060B-T 

  T 

103.4/57.8

C163 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

102.1/60.5

C164 

4030009530  S.CER  C1608 CH 1H 030B-T 

  T 

102.2/54.4

C165 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

95.5/60.3

C173 

4030011770  S.CER  C1608 CH 1H 060B-T 

  T 

93.9/57.5

C174 

4030009910  S.CER  C1608 CH 1H 040B-T 

  T 

96/56.8

C175 

4030009500  S.CER  C1608 CH 1H 0R5B-T 

  T 

92.6/57.5

C176 

4030009560  S.CER  C1608 CH 1H R75B-T 

  T 

91.5/59.5

C177 

4030009530  S.CER  C1608 CH 1H 030B-T 

  T 

87/59.5

C178 

4030011770  S.CER  C1608 CH 1H 060B-T 

  T 

89.1/60.3

C179 

4030011600  S.CER  C1608 JB 1E 104K-T 

  T 

88.4/63

C180 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

115.7/59.7

C181 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

119.3/58.2

C182 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

81.7/52.1

C183 

4030009920  S.CER  C1608 CH 1H 050B-T 

  T 

81.2/54.9

C184 

4030006900  S.CER  C1608 JB 1H 103K-T 

  T 

81.2/61.5

C185 

4030009920  S.CER  C1608 CH 1H 050B-T 

  T 

76.9/51.2

C186 

4030007100  S.CER  C1608 CH 1H 560J-T 

  T 

78.2/49.9

C187 

4030011600  S.CER  C1608 JB 1E 104K-T 

  T 

79.8/53.2

C188 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

79.7/51.2

C189 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

81/46.9

C193 

4030011770  S.CER  C1608 CH 1H 060B-T 

  T 

82.4/37.4

C195 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

82.5/27.6

C202 

4030008880  S.CER  C1608 JB 1H 223K-T 

  T 

89.1/27.6

C203 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

85.6/24.8

C204 

4030006900  S.CER  C1608 JB 1H 103K-T 

  T 

87.7/27.6

C205 

4030007130  S.CER  C1608 CH 1H 101J-T 

  T 

93.9/30.9

C207 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

88.6/19.9

C208 4510004630 

S.ELE 

ECEV1CA100SR 

 

86.7/34.9

C209 

4030006900  S.CER  C1608 JB 1H 103K-T 

  T 

88.3/30.9

C210 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

101.5/33.8

C211 

4030011280  S.CER  C1608 CH 1H 271J-T 

  T 

99.1/21.8

C212 

4030011280  S.CER  C1608 CH 1H 271J-T 

  T 

97.7/21.8

C213 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

99.5/30.9

C214 

4030011600  S.CER  C1608 JB 1E 104K-T 

  T 

102.8/33.8

C215 

4030017490  S.CER  C1608 JB 1A 105K-T 

  T 

93.3/21

C216 

4030011600  S.CER  C1608 JB 1E 104K-T 

  T 

96.3/24.6

C217 

4030007050  S.CER  C1608 CH 1H 220J-T 

  T 

103.3/21.8

C218 

4030011600  S.CER  C1608 JB 1E 104K-T 

  T 

104.7/27.4

C219 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

104.7/30.2

C220 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

96.3/28.5

C221 

4030011810  S.CER  C1608 JB 1A 224K-T 

  T 

91.1/30.9

C222 

4030011810  S.CER  C1608 JB 1A 224K-T 

  T 

73.4/22.2

C223 

4030011600  S.CER  C1608 JB 1E 104K-T 

  T 

73.4/25

C231 

4030011810  S.CER  C1608 JB 1A 224K-T 

  T 

104/16.5

C232 

4030011600  S.CER  C1608 JB 1E 104K-T 

  T 

105.4/13.7

C233 

4030008880  S.CER  C1608 JB 1H 223K-T 

  T 

104/10.9

C234 

4030008880  S.CER  C1608 JB 1H 223K-T 

  T 

105.4/8.1

C235 4510004630 

S.ELE 

ECEV1CA100SR 

 

108.6/9.5

C236 

4030006870  S.CER  C1608 JB 1H 222K-T 

  T 

98.4/7.9

C237 

4030010040  S.CER  C1608 JB 1H 561K-T 

  T 

95.6/10.9

C238 4510005860 

S.ELE 

ECEV1HA2R2SR 

 

91.8/9.9

C241 4510005860 

S.ELE 

ECEV1HA2R2SR 

 

20.8/27.1

C243 4510005860 

S.ELE 

ECEV1HA2R2SR 

 

13.6/18.5

C246 4510005860 

S.ELE 

ECEV1HA2R2SR 

 

20.8/32

C247 

4030006900  S.CER  C1608 JB 1H 103K-T 

  T 

102.6/16.5

C248 

4030017490  S.CER  C1608 JB 1A 105K-T 

  T 

29.3/30.4

C249 

4030011810  S.CER  C1608 JB 1A 224K-T 

  T 

23.9/24.8

C250 

4030017490  S.CER  C1608 JB 1A 105K-T 

  T 

24.5/9.8

C251 

4030006900  S.CER  C1608 JB 1H 103K-T 

  T 

23.2/9.1

C262 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

23.2/15.8

C263 4510005860 

S.ELE 

ECEV1HA2R2SR 

 

31.6/8.7

C264 

4030011810  S.CER  C1608 JB 1A 224K-T 

  T 

30.3/16.7

C265 4510005860 

S.ELE 

ECEV1HA2R2SR 

 

34/16.2

C271 

4030011600  S.CER  C1608 JB 1E 104K-T 

  T 

113.4/37.3

C272 

4030009880  S.CER  C1608 JB 1H 682K-T 

  T 

119/36

C273 

4030006900  S.CER  C1608 JB 1H 103K-T 

  T 

113.4/34.7

C274 

4030008880  S.CER  C1608 JB 1H 223K-T 

  T 

116.2/34.7

C275 

4030006870  S.CER  C1608 JB 1H 222K-T 

  T 

119/30.8

C276 

4030009880  S.CER  C1608 JB 1H 682K-T 

  T 

119/32.1

C281 

4030011600  S.CER  C1608 JB 1E 104K-T 

  T 

116.2/29.5

C282 

4030011810  S.CER  C1608 JB 1A 224K-T 

  T 

111.5/27.1

C284 

4030011600  S.CER  C1608 JB 1E 104K-T 

  T 

108.7/27.1

C285 4510004630 

S.ELE 

ECEV1CA100SR 

 

110.3/30.3

C286 4340000310 

S.MLR 

ECHU 

1C 

333JX5 

 

119/26.1

C287 

4030006870  S.CER  C1608 JB 1H 222K-T 

  T 

118.9/15.1

C288 

4030011600  S.CER  C1608 JB 1E 104K-T 

  T 

118.9/19

C289 

4030006900  S.CER  C1608 JB 1H 103K-T 

  T 

118.9/17.7

C291 4510004630 

S.ELE 

ECEV1CA100SR 

 

13.9/55.1

C292 

4030006900  S.CER  C1608 JB 1H 103K-T 

  T 

29.9/55.5

C293 

4030006860  S.CER  C1608 JB 1H 102K-T 

  T 

29.1/54

C301 

4030011600  S.CER  C1608 JB 1E 104K-T 

  T 

22.9/51.9

C302 

4030006900  S.CER  C1608 JB 1H 103K-T 

  T 

22.9/47.7

C303 

4030011280  S.CER  C1608 CH 1H 271J-T 

  T 

18.5/48.4

C304 

4030006900  S.CER  C1608 JB 1H 103K-T 

  T 

9.9/51.9

C305 

4030011600  S.CER  C1608 JB 1E 104K-T 

  T 

21.4/44.9

C306 

4030007020  S.CER  C1608 CH 1H 120J-T 

  T 

18.5/41.7

C311 

4030017480  S.CER  C1608 JB 1A 474K-T 

  T 

21.4/40.3

C312 

4030009490  S.CER  C1608 JB 1H 821K-T 

  T 

28.5/41.7

C313 

4030006880  S.CER  C1608 JB 1H 472K-T 

  T 

31.3/41.7

C314 

4030007100  S.CER  C1608 CH 1H 560J-T 

  T 

36.9/41.9

C315 

4030006900  S.CER  C1608 JB 1H 103K-T 

  T 

31.3/49.1

C316 4510004630 

S.ELE 

ECEV1CA100SR 

 

32.9/52.4

C317 

4030011810  S.CER  C1608 JB 1A 224K-T 

  T 

25.7/50.5

C318 

4030007090  S.CER  C1608 CH 1H 470J-T 

  T 

28.5/50.5

C322 

4030017490  S.CER  C1608 JB 1A 105K-T 

  T 

25/43.5

C323 

4030009880  S.CER  C1608 JB 1H 682K-T 

  T 

36.8/43.3

Summary of Contents for IC-M422

Page 1: ...3 26 5 6 2 42 3 6 2 iC m422 ...

Page 2: ...r your convenience 1 Make sure the problem is internal before dis assembling the transceiver 2 DO NOT open the transceiver until the transceiver is disconnected from its power source 3 DO NOT force any of the variable components Turn them slowly and smoothly 4 DO NOT short any circuits or electronic parts An insulated turning tool MUST be used for all adjustments 5 DO NOT keep power ON for a long ...

Page 3: ...ATION 5 1 5 2 FREQUENCY ADJUSTMENT 5 2 5 3 TRANSMIT ADJUSTMENT 5 3 5 4 RECEIVE ADJUSTMENT 5 4 SECTION 6 PARTS LIST 6 1 IC M422 6 1 6 2 HM 150B SW 6 5 SECTION 7 MECHANICAL PARTS AND DISASSEMBLY SECTION 8 SEMICONDUCTOR INFORMATION SECTION 9 BOARD LAYOUTS 9 1 LOGIC BOARD 9 1 9 2 HM 150B SW 9 1 9 3 VR BOARD 9 3 9 4 SQL BOARD 9 3 9 5 MAIN UNIT 9 3 SECTION 10 BLOCK DIAGRAM SECTION 11 VOLTAGE DIAGRAM 11 ...

Page 4: ...power More than 70 dB Audio harmonic distortion Less than 10 at 60 deviation Residual modulation More than 40 dB Audio frequency response 1 dB to 3 dB of 6 dB oct from 300 Hz to 2500 Hz Microphone impedance 2 kΩ M RECEIVER Receive system Double conversion superheterodyne system Intermediate frequencies 1st IF 21 7 MHz 2nd IF 450 kHz Sensitivity 13 dBµ typical at 12 dB SINAD Squelch sensitivity At ...

Page 5: ... 4 6 5 2 2 6 5 1 5 2 2 6 5 1 A 5 6 A 5 6 5 7 2 6 5 1 5 7 2 6 5 1 5 2 3 6 5 1 5 2 9 0 6 1 7 6 2 7 6 5 7 3 6 5 1 5 7 3 6 5 1 8 6 8 6 5 2 4 6 5 1 5 2 4 6 5 1 9 6 9 6 5 7 4 6 5 1 5 7 4 6 5 1 0 7 3 0 7 3 5 2 5 6 5 1 5 2 5 6 5 1 1 7 1 7 5 7 5 6 5 1 5 7 5 6 5 1 2 7 2 7 5 2 6 6 5 1 5 2 6 6 5 1 3 7 3 7 5 7 6 6 5 1 5 7 6 6 5 1 4 7 4 7 5 2 7 6 5 1 5 2 7 6 5 1 7 7 1 7 7 1 5 7 8 6 5 1 5 7 8 6 5 1 5 2 9 6 5 1 5...

Page 6: ...2 1 SECTION 2 INSIDE VIEWS FRONT UNIT MAIN UNIT ...

Page 7: ...G THE MAIN UNIT 1 Disconnect W2 from the J2 and J3 2 Disconnect W4 and W5 from the J4 and J5 3 Unsolder the antenna connector C 2 points 4 Unsolder bottom side D 6 points as shown below 5 Unscrew 2 screws E and 6 screws F and 2 clips G to remove the MAIN unit from the chassis 3 Unscrew 4 screws B Note When replacing the screws 0 6 0 8 N m of torque MUST be applied to ensure water resistance 4 Slid...

Page 8: ... converted 1st IF signal from the 1st mixer is passed through the monolithic filters FI1 FI2 to suppress unwant ed signals and then amplified at the 1st IF amplifier Q23 The amplified 1st IF signal is applied to the FM IF IC IC2 pin 16 4 1 4 2nd IF AND DEMODULATOR CIRCUITS The 1st IF signal is converted into the 2nd IF signal and de modulated at the detector section in the FM IF IC The FM IF IC co...

Page 9: ...l Then the level adjusted MIC signals are applied to the modulation circuit 4 2 2 MODULATION CIRCUIT The modulation circuit modulates the VCO oscillating signal with the audio signals from the microphone The level adjusted MIC signals are applied to the modulation circuit D2 to modulate the VCO oscillating signal by chang ing the reactance of D2 at the VCO Q4 Q5 D3 D4 The modulated VCO output sign...

Page 10: ...lock voltage change to compensate for the drift in the oscillated frequency 4 4 DSC CIRCUITS DECODING A portion of the demodulated AF signals from the FM IF IC IC2 pin 9 are passed through the LPF Q38 to filter DSC signal The filtered DSC signal is applied to the DSC de coder IC15 pin 2 The decoded DSC signal is output from pin7 and then applied to the CPU LOGIC BOARD IC1 pin 14 Then the CPU contr...

Page 11: ...uit Q17 D11 High 25 W Low 1 W 55 ATT Outputs attenuator control signal to the attenuator D22 High Attenuator ON 57 PTT Input port for the PTT switch HM 150B SW S1 Low PTT key is pushed 60 UNLK Input port for the UNLK signal from the PLL IC IC1 pin7 High PLL circuit is unlocked 61 DTRS Input port for the DISTRESS key LOGIC BOARD S9 Low DISTRESS key is pushed 62 RMUTEP Outputs AF Public Address mute...

Page 12: ...6 key is pushed 76 DOWN Input port for the Z key LOGIC BOARD S2 Low Z key is pushed 77 UP Input port for the Y key LOGIC BOARD S1 Low Y key is pushed 138 DIM Outputs dimmer control signal to the LCD control circuit LOGIC BOARD Q2 Q3 139 BEEP Outputs beep signal to the AF amplifier IC9 pin 1 141 DS BPF While transmitting Outputs DSC encode signal as DSENC to the LPF IC8 pin 5 via the buffer amplifi...

Page 13: ...e 0 01 20 V FM deviation meter Frequency range 30 300 MHz Measuring range 0 to 10 kHz AC millivoltmeter Measuring range 10 mV to 10 V DC volt meter Input impedance 50 kΩ V DC or more External speaker Input impedance 4 Ω Capacity More than 5 W Attenuator Power attenuation 40 or 50 dB Capacity More than 30 W SECTION 5 ADJUSTMENT PROCEDURES 5 1 PREPARATION M REQUIRED TEST EQUIPMENTS To the antenna co...

Page 14: ...CP1 1 1 2 1 V MAIN Verify 2 Channel CH16 156 800 MHz Output power Low Transmitting 0 9 1 9 V Verify REFERENCE FREQUENCY 1 Channel CH16 156 800 MHz Output power Low Connect a power meter to the antenna connector Transmitting Rear Panel Loosely couple a fre quency counter to the antenna connector 156 800 MHz 500 Hz MAIN C12 CP1 Lock voltage check point Reference frequency adjustment C12 5 2 FREQUENC...

Page 15: ...nel CH16 156 800 MHz Output power Low Connect an audio generator to the pin 28 of J4 MAIN UNIT and set as Frequency 1 kHz Level 30 mV Set the FM deviation meter as HPF OFF LPF 20 kHz De emphasis OFF Detector P P 2 Transmitting Rear Panel C o n n e c t a n F M deviation meter to the antenna con nector through an attenuator 4 25 4 35 kHz MAIN R327 R112 R327 Output power adjustment Frequency deviatio...

Page 16: ...set as Frequency 156 800 MHz Level 10 dBµ Modulation 1 kHz Deviation 3 kHz Receiving MAIN Connect a DC volt meter or oscilloscope to the check point CP3 Maximum voltage MAIN L35 L36 L38 L39 Repeate two times or more SQUELCH 1 Channel CH16 156 800 MHz SQL Max counterclockwise Set the SSG as Level 12 dBµ Receiving MAIN Connect a volt meter or oscilloscopeto the check point CP5 1 0 V MAIN R214 5 4 RE...

Page 17: ...3GEYJ 331 V 330 Ω B 12 4 39 R76 7030003380 S RES ERJ3GEYJ 331 V 330 Ω B 12 4 43 9 R81 7030003430 S RES ERJ3GEYJ 821 V 820 Ω B 87 3 10 R82 7030003520 S RES ERJ3GEYJ 472 V 4 7 kΩ B 21 4 39 5 R83 7030003440 S RES ERJ3GEYJ 102 V 1 kΩ B 70 9 12 R85 7030003680 S RES ERJ3GEYJ 104 V 100 kΩ B 12 7 27 5 R86 7030003210 S RES ERJ3GEYJ 120 V 12 Ω B 11 2 31 7 R87 7030003520 S RES ERJ3GEYJ 472 V 4 7 kΩ B 13 7 34...

Page 18: ...A1 FI1 2030000350 MLH 21R15AB FL 368 FI2 2030000270 MLH FL 363 21 7 MHz FI3 2020001680 CER ALFY450E X1 6050012120 S XTL CR 804 21 250 MHz T 49 29 6 X2 6070000200 DCR CDBLA450KCAY24 B0 L1 6200009560 S COL MLG1608B R10J T T 66 2 45 L2 6200010840 S COL MLG1608B 56NJ T T 61 4 42 8 L3 6200003090 S COL NL 322522T 2R7J 3 T 57 3 56 2 L4 6200008190 S COL 0 25 1 9 8TL 80N T 55 1 52 6 L6 6200009560 S COL MLG...

Page 19: ...100 kΩ T 21 9 9 1 R262 7030003680 S RES ERJ3GEYJ 104 V 100 kΩ T 27 7 10 4 R263 7030003800 S RES ERJ3GEYJ 105 V 1 MΩ T 26 4 8 3 R264 7030003450 S RES ERJ3GEYJ 122 V 1 2 kΩ T 32 8 11 8 R265 7030003520 S RES ERJ3GEYJ 472 V 4 7 kΩ T 30 6 13 5 R266 7030003800 S RES ERJ3GEYJ 105 V 1 MΩ T 30 3 20 REF ORDER DESCRIPTION M H V NO NO LOCATION MAIN UNIT R267 7030003800 S RES ERJ3GEYJ 105 V 1 MΩ T 30 2 22 1 R2...

Page 20: ...S CER C1608 JB 1H 102K T T 102 1 60 5 C164 4030009530 S CER C1608 CH 1H 030B T T 102 2 54 4 C165 4030006860 S CER C1608 JB 1H 102K T T 95 5 60 3 C173 4030011770 S CER C1608 CH 1H 060B T T 93 9 57 5 C174 4030009910 S CER C1608 CH 1H 040B T T 96 56 8 C175 4030009500 S CER C1608 CH 1H 0R5B T T 92 6 57 5 C176 4030009560 S CER C1608 CH 1H R75B T T 91 5 59 5 C177 4030009530 S CER C1608 CH 1H 030B T T 87...

Page 21: ...1CA101UP T 14 8 61 8 C387 4030011600 S CER C1608 JB 1E 104K T T 30 58 9 C388 4030006860 S CER C1608 JB 1H 102K T T 21 1 61 6 C389 4510004630 S ELE ECEV1CA100SR T 24 9 63 8 C390 4030011600 S CER C1608 JB 1E 104K T T 32 56 4 C391 4030006860 S CER C1608 JB 1H 102K T T 30 60 2 C392 4510004630 S ELE ECEV1CA100SR T 32 8 63 8 C393 4510004630 S ELE ECEV1CA100SR T 39 6 65 6 C411 4030006900 S CER C1608 JB 1...

Page 22: ...ctor MR DSE 01 1 W1 8900014000 Cable OPC 1405 TJM 1 W2 8900014090 Cable OPC 1489 AI 1 MP1 8510016590 Case 2807 CASE BLK 1 8510016620 Case 2807 CASE A SW 1 MP2 8830001730 Screw ultra sert UD 45058 NI 2 MP4 8930055070 2438 sheet 1 MP5 8930064040 2807 R packing seal 1 MP11 8010020100 2852 chassis 1 MP12 8930034300 1542 ANT seal KN 1 MP13 8810002950 Screw M3x6 SUS 2 MP14 8930064350 2807 R bush plate 1...

Page 23: ...7 2 IC M422 sm indd 9 10 4 21 2005 1 01 32 PM ...

Page 24: ...8 1 SECTION 8 SEMICONDUCTOR INFORMATION TRANSISTOR AND FET S DIODES ...

Page 25: ... 6 7 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 37 s 4 0 6 7 9 1 SECTION 9 BOARD LAYOUTS The combination of this page and the next page shows the unit layout in the same configuration as the actual P C Board IC M422 sm 2 indd 1 2 4 22 2005 1 35 26 PM ...

Page 26: ...6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 37 s 44 6 7 0 0 n 9 2 The combination of this page and the previous page shows the unit layout in the same configuration as the actual P C Board IC M422 sm 2 indd 3 4 4 22 2005 1 35 32 PM ...

Page 27: ...6 6 6 6 6 6 6 5 4 s 4 0 6 7 31 2 s 4 0 6 7 62 2 s 4 0 6 7 0 0 0 33 3 9 3 The combination of this page and the next page shows the unit layout in the same configuration as the actual P C IC M422 sm 2 indd 5 6 4 22 2005 1 35 33 PM ...

Page 28: ... 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 7 7 7 7 31 2 s 44 6 7 62 2 s 44 6 7 9 4 The combination of this page and the previous page shows the unit layout in the same configuration as the actual P C Board IC M422 sm 2 indd 7 8 4 22 2005 1 35 35 PM ...

Page 29: ...10 1 SECTION 10 BLOCK DIAGRAM IC M422 sm indd 21 22 4 21 2005 1 01 39 PM ...

Page 30: ...11 1 11 1 MAIN UNIT 6 6 6 6 6 6 6 28 6 28 6 48 6 48 6 6 28 6 6 6 SECTION 11 VOLTAGE DIAGRAM IC M422 sm indd 23 24 4 21 2005 1 01 40 PM ...

Page 31: ...11 2 48 6 6 28 6 48 6 6 6 6 28 6 28 6 6 6 6 6 48 6 6 6 6 IC M422 sm indd 25 26 4 21 2005 1 01 43 PM ...

Page 32: ...11 3 11 2 LOGIC BOARD IC M422 sm indd 27 28 4 21 2005 1 01 44 PM ...

Page 33: ...002000 1 Spring washer M4 SUS 3 1 MP19 MP20 8810010240 8930061700 Screw PH B0 2 2715 PTT plate 6 NI BT Screw BiH M4 8 ZK REF NO CHASSIS PARTS ORDER NO DESCRIPTION QTY MC1 7700002640 MIC KUC3523 040245 1 REF NO MAIN PARTS ORDER NO DESCRIPTION QTY Screw and washer abbreviations B0 BT Self Tapping PH Pan head NI Nickel SUS Stainless ZK Black BiH Bind head MAIN UNIT MP12 C MP3 C MP1 C MC1 M MP19 C MP1...

Page 34: ...d Centre 150 6165 Highway 17 Delta B C V4K 5B8 Canada Phone 1 604 952 4266 Fax 1 604 952 0090 URL http www icomcanada com E mail info icomcanada com A B N 88 006 092 575 Unit 1 103 Garden Road Clayton VIC 3168 Australia Phone 61 03 9549 7500 Fax 61 03 9549 7505 URL http www icom net au E mail sales icom net au 146A Harris Road East Tamaki Auckland New Zealand Phone 64 09 274 4062 Fax 64 09 274 470...

Page 35: ...S 14131MZ C1 2005 Icom Inc ...

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