Icom IC-M700PRO Servise Manual

Also see for IC-M700PRO: Instruction manual Instruction manual Service manual Instruction manual Instruction manual

Contents

Icom IC-M700PRO Servise Manual Manual pdf 16 page image

4 - 44-3 TRANSMITTER ADJUSTMENTSIDLINGCURRENT(For drivetransistors)(For finaltransistors)IC APCSWRDETECTORTRANSMITPEAKADJUSTMENTADJUSTMENT ADJUSTMENT CONDITION MEASUREMENT VALUE POINTUNIT LOCATION UNIT ADJUST121121• Display frequency : 12.2300 MHz• mode : J3E• Apply no audio signal to the[MICROPHONE] connector.• Transmitting• Display frequency : 12.2300 MHz• mode : J3E• Apply no audio signal to the[MICROPHONE] connector.• Transmitting• Display frequency : 22.0000 MHz• Mode : J3E• Preset R4031 on the PA unit tothe maximum counterclockwiseposition.• Connect a dummy load (10 A)between lead of R4035 (powerline) and EP4009 (power ground)on the PA unit.• Connect an audio generator to the[MICROPHONE] connector and setas:Frequency : 1.5 kHzLevel : 100 mV rms• Connect an RF power meter to the[ANT] connector.• Transmitting• Display frequency : 22.0000 MHz• Mode : J3E• Ground the lead of R545 on theMAIN unit with a wire.• Connect an audio generator to the[MICROPHONE] connector and setas:Frequency : 1.5 kHz• Transmitting• Display frequency : 12.2300 MHz• Mode : J3E• Ground the lead of R545 on theMAIN unit with a wire.• Connect an audio generator to the[MICROPHONE] connector and setas:Frequency : 1.5 kHzLevel : 3 mV• TransmittingPAPARearPanelRearPanelMAINRearPanelCut the lead wire(W4011) and connecta DC ammeter (1 A)to the cut points.U n s o l d e r R 4 0 2 6and connect the DCammeter (3 A) to theunsoldered points.C o n n e c t a D Ca m m e t e r ( 5 0 A )b e t w e e n t h e D Cpower supply andDC power receptacle(DC input +).C o n n e c t a n R Fpower meter to the[ANT] connector.C o n n e c t a D Cvoltmeter to R150.C o n n e c t a n R Fpower meter to the[ANT] connector.100 mA500 mA30 A140 WMinimum levelMaximum output powerPAPAPAAudiogeneratorFILTERMAINR4022R4025R4031OutputlevelC4392Adjust insequenceL89, L88,L65, L64,L59After adjustment, re-solder the lead wire (W4011).After adjustment, re-solder R4026.After adjustment, remove the dummy load.After adjustment, remove the wire from R545.After adjustment, remove the wire from R545.