IC-910H Service manual - n7tgb

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• Opening the PA unit cover q Remove the top cover as shown in the diagram on p. 3- 1. w Remove 8 screws and grounding plate from the PA unit cover. e Remove fastening tape from the inside power cable. r Slide the PA unit cover as shown below. grounding plate • FL-132/FL-133 CW NARROW FILTER q Remove the bottom cover as shown in the diagram on p. 3-1. • Remove the UX-910 if you have installed it. (p. 3-1) w Disconnect the connection cable connectors from J501 and J1051 on the MAIN unit. e Remove 2 clips. t Install FL-132 or FL-133 to the specified position on the MAIN unit. WARNING! BE CAREFUL not to pinch your finger with the clip. r Remove 6 screws from the MAIN unit, then lift up the MAIN unit. FL-132 (MAIN) FL-133 (SUB) PLL unit J501 J1051 y Solder then cut the leads, keeping 2–3 mm (1/8’’) of the leads from the bottom of the MAIN unit. u Return the MAIN unit and clips to their original positions. i Re-connect the connection cable connector to J501 and J1051 on the MAIN unit. o Return the bottom cover to the original position. MAIN unit (MAIN) Clips (SUB) 3 - 2
• UT-102 VO<strong>IC</strong>E SYNTHESIZER UNIT q Remove the bottom cover as shown in the diagram on p. 3-1. • Remove the UX-910 if you have installed it. (p. 3-1) w Remove the protective paper attached to the bottom of the UT-102 to expose the adhesive strip. e Plug UT-102 into J1801 on the MAIN unit as shown in the diagram at right. r Return the bottom cover to its original position. J1801 UT-102 MAIN unit • UT-106 DSP UNIT RECOMMENDATION: When installing only 1 DSP unit, you can install into either front or rear panel side. However, installing a DSP unit into the front panel side may be easier and also safer. Installing 1st DSP unit (front panel side) q Remove the bottom cover as shown in the diagram on p. 3-1. • Remove the UX-910 if you have installed it. (p. 3-1) w Remove the shielding plate. e Remove the connection cable from J1751 on the MAIN unit. Connect the cable into J1 on the UT-106. r Plug the connection cable (P1) from the UT-106 to J1751 on the MAIN unit. t Plug the flat cable into J3 on the UT-106 and to J1771 on the MAIN unit. • Take care of the conductor direction. • Attach the Velcro tape to the UT-106 and PLL unit shielding plate. y Return the shielding plate, top cover and bottom cover to their original positions. Installing 2nd DSP unit (rear panel side) q Remove the top and bottom cover as shown in the diagram on p. 3-1. • Remove the UX-910 if you have installed it. (p. 3-1) w Remove the shielding plate. e Remove the connection cable from J1761 on the MAIN unit. Connect the cable into J1 on the UT-106. The cable between J1221 on the MAIN and J1 on the DSP unit, must be set in the groove of the chassis (see diagram below). Otherwise, the cable may be damaged when returning the shield plate to its original position. r Plug the connection cable (P1) from the UT-106 to J1761 on the MAIN unit. t Plug the flat cable into J3 on the UT-106 and to J1781 on the MAIN unit. • Take care of the conductor direction. • Attach the Velcro tape to the UT-106 and PLL unit shielding plate. y Return the shielding plate, top cover and bottom cover to their original positions. Shielding plate PLL unit Set cable into the groove. Shielding plate J1 UT-106 J3 J1 J1771 J1751 P1 PLL unit UT-106 J3 J1 Take care of the conductor direction. MAIN unit J1781 P1 Take care of the conductor direction. J1761 MAIN unit 3 - 3
Page 1 and 2: SERVICE MANUAL VHF/UHF ALL MODE TRA
Page 3 and 4: TABLE OF CONTENTS SECTION 1 SPECIFI
Page 5 and 6: ■ RECEIVER • Receive system : V
Page 7 and 8: • PA UNIT TX/RX switching relay (
Page 9: SECTION 3 DISASSEMBLY AND OPTION IN
Page 13 and 14: SECTION 4 CIRCUIT DESCRIPTION 4-1 R
Page 15 and 16: 4-1-11 NOISE BLANKER CIRCUIT (MAIN
Page 17 and 18: low-pass filter and UHF signal are
Page 19 and 20: SECTION 5 ADJUSTMENT PROCEDURES 4-1
Page 21 and 22: • PLL AND MAIN UNITS R570 30.2 MH
Page 23 and 24: • PA UNIT 144M receiver peak/gain
Page 25 and 26: • PA UNIT 430M peak adjustment fo
Page 27 and 28: • PA UNIT P501 RF peak pre-settin
Page 29 and 30: • MAIN UNIT R202 Drive level adju
Page 31 and 32: SOFTWARE ADJUSTMENT (continued) ADJ
Page 37 and 38: CP321 Idling check point CP322 Idli
Page 39 and 40: R67 APC adjustment CP401 APC check
Page 41 and 42: [DISPLAY BOARD] REF ORDER NO. NO. D
Page 43 and 44: [RIT BOARD] REF ORDER NO. NO. R2 72
Page 45 and 46: [PLL UNIT] REF ORDER NO. NO. DESCRI
Page 47 and 48: [PLL UNIT] REF ORDER NO. NO. DESCRI
Page 49 and 50: [MAIN UNIT] REF NO. ORDER NO. DESCR
Page 53 and 54: [MAIN UNIT] REF ORDER NO. NO. DESCR
Page 57 and 58: [PA UNIT] REF NO. ORDER NO. DESCRIP
Page 59 and 60: [PA UNIT] REF ORDER NO. NO. DESCRIP
Page 61 and 62:
[PA UNIT] REF ORDER NO. NO. DESCRIP
Page 63 and 64:
[PA UNIT] REF ORDER NO. NO. DESCRIP
Page 65 and 66:
[MAIN UNIT] — UX-910 REF NO. ORDE
Page 67 and 68:
[MAIN UNIT] — UX-910 REF ORDER NO
Page 69 and 70:
[MAIN UNIT] — UX-910 REF ORDER NO
Page 71 and 72:
[PA UNIT] REF. NO. ORDER NO. DESCRI
Page 73 and 74:
2SK2855 2SK2973 2SK2975 3SK131 T2 L
Page 75 and 76:
SECTION 9 9-1 VR-A BOARD • TOP VI
Page 77 and 78:
1-1-32, Kamiminami, Hirano-ku, Osak
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IC-910H Service manual - n7tgb

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