FTDX-1200_serv.pdf

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1、2015 YAESU MUSEN CO., LTD. Specifjcations Exploded View realignment may be required afuer the faulty com- ponents have been replaced. We recommend that authorized Yaesu Techni- cians, who are experienced with the circuitry and fully equipped to repair and align our products, perform repairs. If a fa

2、ult is suspected, contact the selling dealer for instructions regarding repair. Authorized Yaesu Technicians have the latest infor- mation to align all circuits and make complete per- formance checks to ensure compliance with factory specifjcations afuer repairs. Those who do undertake any of the fo

3、llowing alignments are cautioned to proceed at their own risk. Problems caused by unauthorized atuempts at realignment are not covered by the warranty poli- cy. Yaesu must reserve the right to change circuits and alignment procedures in the interest of improved performance, without notifying owners.

4、 Under no circumstances should any alignment be atuempted unless the normal functions and opera- tion of the transceiver are clearly understood, the cause of the malfunction has been clearly identifjed and all faulty components replaced. The need for realignment should be determined to be absolutely

5、 necessary. The following test equipment (and a thorough fa- miliarity with its correct use) is necessary for cor- rect realignment. Most steps do not require all of the equipment listed. The interactions of some ad- justments may require that more complex adjust- ments be performed in a sequence. D

6、o not atuempt to perform only a single step unless it is clearly iso- lated electrically from all other steps. Have all test equipment ready before beginning, and follow all of the steps in a section in the order they are pre- sented. Required Test Equipment RF Signal Generator AF Signal Generator S

7、pectrum Analyzer good to at least 1 GHz. Frequency Counter SINAD Meter RF Millivoltmeter Electronic Load Digital DC Voltmeter (high-Z, 1 M-Ohm/V) DC Voltmeter DC Ammeter (20 A) Ohmmeter 50-Ohm Dummy Load (100/200 watus) In-Line Watumeter (150/300 watus, 50-Ohm) Linear Detector RF Coupler 4-Ohm AF Du

8、mmy Load (3 watus) 1/4-inch 3-contact Plug Alignment Preparation & Precautions A 50-ohm RF Dummy load and in-line watumeter must be connected to the “ANT 1” jack in all proce- dures that call for transmission, except where spec- ified otherwise. Correct alignment is not possible with an antenna. Afu

9、er completing one step, read the following step to determine whether the same test equipment will be required. If not, remove the unneeded test equipment before proceeding. (except the dummy load and watumeter). Correct alignment requires that the ambient tem- perature be maintained constant between

10、 68 F 86 F (20 C 30 C). When the transceiver is brought into the shop from a hot or cold environment, it should be allowed time to come to room tempera- ture before alignment. Also, the test equipment must be thoroughly warmed up before beginning. Whenever possible, alignments should be made with os

11、cillator shields and circuit boards fjrmly af- fjxed in place. Note: Signal levels in dB referred to in this proce- dure are based on 0 dB = 0.5 V (closed cir- cuit). Important Notice Do not adjust the alignment menus that are not mentioned in this manual. FTDX1200 Technical Supplement Alignment ALI

12、GNMENT-2 VDD Meter Adjustment Connect the DC voltmeter to pin 6 of J5004 on the PA Unit. Press and hold in the 1.8(1), 3.5(2), and 7(3) keys, while turning the radio on, to enter the alignment mode. Rotate the Main Tuning Dial knob to select the alignment parameter “1-01 VDD MTR”. Press the ENT key,

13、 then rotate the VFO-B/ CLAR knob so the VDD meter reading is the same as the reading on the DC voltmeter. Press and hold in the MENU button for one second to save the new setting and exit the alignment mode. TEMP/FAN Adjustment Press and hold in the 1.8(1), 3.5(2), and 7(3) keys, while turning the

14、radio on, to enter the alignment mode. Rotate the Main Tuning Dial knob to select the alignment parameter “1-02 TEMP”. Rotate the VFO-B/CLAR knob so the Display Window shows “100”. Rotate the Main Tuning Dial knob to select the alignment parameter “1-03 FAN”. Rotate the VFO-B/CLAR knob so the Displa

15、y Window shows “128”. Press and hold in the MENU button for one second to save the new settings and exit the alignment mode. PA Unit Alignment Point Pin 6 of J5004 FTDX1200 Technical Supplement Alignment ALIGNMENT-3 SHIFT/WIDTH Knob Zero (Center) Adjustment Press and hold in the 1.8(1), 3.5(2), and

16、7(3) keys, while turning the radio on, to enter the alignment mode. Set the SHIFT/WIDTH knobs to the 12-oclock- position. Set the operating mode to “USB”. Rotate the Main Tuning Dial knob to select the alignment parameter “1-05 SHIFT-CAL”. Rotate the VFO-B/CLAR knob so the IF SHIFT frequency is set

17、to “0.00” on the display. The center point (0.00) is broad. Therefore, set the VFO-B/CLAR knob to the center of this broad range. Rotate the Main Tuning Dial knob to select the alignment parameter “1-06 WIDTH-CAL”. Rotate the VFO-B/CLAR knob so the IF band- width is set to “2400” on the external dis

18、play. The IF bandwidth (2400) is broad. Therefore, set the VFO-B/CLAR knob to the center of this broad range. Press and hold in the MENU button for one second to save the new settings and exit the alignment mode. COMP Meter Adjustment Press and hold in the 1.8(1), 3.5(2), and 7(3) keys, while turnin

19、g the radio on, to enter the alignment mode. Rotate the Main Tuning Dial knob to select the alignment parameter “24-02 COMP-MTR- 10dB”, then rotate the VFO-B/CLAR knob for 10 dB on the COMP meter. Rotate the Main Tuning Dial knob to select the alignment parameter “24-03 COMP-MTR- 20dB”, then rotate

20、the VFO-B/CLAR knob for 20 dB on the COMP meter. Rotate the Main Tuning Dial knob to select the alignment parameter “24-04 COMP-MTR- 30dB”, then rotate the VFO-B/CLAR knob so the COMP meter defmects to full scale. Press and hold in the MENU button for one second to save the new settings and exit the

21、 alignment mode. FTDX1200 Technical Supplement Alignment ALIGNMENT-4 loCAl Unit Alignment Points TP4005 2nd/3rd Local Oscillator Adjustment Disconnect the coaxial cable from J4004 on the LOCAL Unit, then connect the RF millivoltme- ter to J4004. Confjrm that the correct level is present on the RF mi

22、llivoltmeter (0 dBm +- 3dB). Disconnect the RF millivoltmeter from J4004, then re-connect the RF millivoltmeter to J4004. Disconnect the coaxial cable from J4004 on the LOCAL Unit, then connect the RF millivoltme- ter to J4003. Confjrm that the correct level is present on the RF millivoltmeter (0 dB

23、m +- 3dB). Disconnect the RF millivoltmeter from J4003, then re-connect the coaxial cable to J4004. VCO Adjustment Connect the Digital DC voltmeter (high-Z) to TP4005 on the LOCAL Unit. Disconnect the coaxial cable from J4002 on the LOCAL Unit, then connect the RF millivoltme- ter to J4002. Press an

24、d hold in the 1.8(1), 3.5(2), and 7(3) keys, while turning the radio on, to enter the alignment mode. Referring to the table below, select the appro- priate “Alignment Parameter” using the Main Tuning Dial knob per the chart below, and adjust the listed components for the required voltage, or confir

25、m that the correct voltage is present on each alignment parameter. Disconnect the RF millivoltmeter from J4004, then re-connect the coaxial cable to J4004. Press and hold in the MENU button for one second to save the new setting and exit the alignment mode. Alignment PArAmeter 1-07 VCO1-H 1-08 VCO1-

26、L 1-09 VCO2-H 1-10 VCO2-L 1-11 VCO3-H 1-12 VCO3-L 1-13 VCO4-H 1-14 VCO4-L Adjust / Confirm Adjust TC4004 Confjrm Adjust TC4003 Confjrm Adjust TC4002 Confjrm Adjust TC4001 Confjrm dC voltmeter 5.0 V 0.1 V At least 0.6 V 5.0 V 0.1 V At least 0.6 V 5.0 V 0.1 V At least 0.6 V 5.0 V 0.1 V At least 0.6 V

27、rf millivoltmeter At least 10 dBm At least 10 dBm At least 10 dBm At least 10 dBm At least 10 dBm At least 10 dBm At least 10 dBm At least 10 dBm J4002J4004 J4003 TC4001TC4002 TC4003TC4004 FTDX1200 Technical Supplement Alignment ALIGNMENT-5 REF OSC Adjustment Disconnect the coaxial cable from J4004

28、on the LOCAL Unit, then connect the frequency counter to J4004. Press and hold in the 1.8(1), 3.5(2), and 7(3) keys, while turning the radio on, to enter the alignment mode. Rotate the Main Tuning Dial knob to select the alignment parameter “1-04 FREQ”. Rotate the VFO-B/CLAR knob so that the frequen

29、cy counter reading is “40.00000 5 Hz”. Disconnect the frequency counter from J4004, then re-connect the coaxial cable to J4004. Press and hold in the MENU button for one second to save the new setting and exit the alignment mode. 1st LO Noise Adjustment Disconnect the coaxial cable from J4004 on the

30、 LOCAL Unit, then connect the frequency counter to J4004. Press and hold in the 1.8(1), 3.5(2), and 7(3) keys, while turning the radio on, to enter the alignment mode. Rotate the Main Tuning Dial knob to select the alignment parameter “1-04 FREQ”. Rotate the VFO-B/CLAR knob so that the frequency cou

31、nter reading is “40.00000 5 Hz”. Disconnect the frequency counter from J4004, then re-connect the coaxial cable to J4004. Press and hold in the MENU button for one second to save the new setting and exit the alignment mode. Main Receiver Adjustment 1st Local Oscillator Adjustment Set the following c

32、ontrols as indicated: ANT : ANT 1 IPO : AMP1 ATT : OFF R.FLT : AUTO AGC : AUTO RF GAIN : Fully clockwise Connect the RF millivoltmeter to TP1042 on the MAIN Unit. Press and hold in the 1.8(1), 3.5(2), and 7(3) keys, while turning the radio on, to enter the alignment mode. Rotate the Main Tuning Dial

33、 knob to select the alignment parameter “2-01 Local1.8”. Rotate the VFO-B/CLAR knob so that the DC voltmeter reading is “0.620 0.625 V”. Rotate the Main Tuning Dial knob to select the alignment parameter “2-02 Local3.5”. Rotate the VFO-B/CLAR knob so that the DC voltmeter reading is “0.620 0.625 V”.

34、 Rotate the Main Tuning Dial knob to select the alignment parameter “2-03 Local7”. mAin Unit (ReCeiveR seCtion ) A lignment Point TP1042 FTDX1200 Technical Supplement Alignment ALIGNMENT-6 Rotate the VFO-B/CLAR knob so that the DC voltmeter reading is “0.620 0.625 V”. Rotate the Main Tuning Dial kno

35、b to select the alignment parameter “2-04 Local14”. Rotate the VFO-B/CLAR knob so that the DC voltmeter reading is “0.640 0.645 V”. Rotate the Main Tuning Dial knob to select the alignment parameter “2-05 Local21”. Rotate the VFO-B/CLAR knob so that the DC voltmeter reading is “0.620 0.625 V”. Rotat

36、e the Main Tuning Dial knob to select the alignment parameter “2-06 Local28”. Rotate the VFO-B/CLAR knob so that the DC voltmeter reading is “0.600 0.605 V”. Rotate the Main Tuning Dial knob to select the alignment parameter “2-07 Local50”. (Set the VFO-A frequency to 28.850 MHz.) Rotate the VFO-B/C

37、LAR knob so that the DC voltmeter reading is “0.520 0.525 V”. (Set the VFO-A frequency to 50.500 MHz) Press and hold in the MENU button for one second to save the new settings and exit the alignment mode. 2nd Local Level Adjustment Connect the RF millivoltmeter to TP1062 on the MAIN Unit. Adjust T10

38、32 on the MAIN Unit for maximum deflection on the RF millivoltmeter (+6 - 14 dBm). 3rd Local Level Adjustment Connect the RF millivoltmeter to TP1058 on the MAIN Unit. Adjust T1029 on the MAIN Unit for maximum deflection on the RF millivoltmeter (+6 to 14 dBm). IF Transformer Adjustment Set the VFO-

39、A frequency to 14.200 MHz in the CW-USB mode. Set the following controls as indicated: ANT : ANT 1 IPO : AMP1 ATT : OFF R.FLT : 3 kHz AGC : AUTO RF GAIN : Fully clockwise Connect the AF millivoltmeter and 4 Ohm dummy load to the EXT SP jack. Connect the RF Signal Generator to the “ANT 1” jack, then

40、set the output level to +5 - -10 dB at the 14.200 MHz. Adjust T1034 and T1025 on the MAIN Unit in succession several times for maximum defmection on the AF millivoltmeter. Note: If the S-meter deflects while adjusting, reduce the RF Signal Generator output so that the S-meter does not defmect. mAin

41、Unit (ReCeiveR seCtion ) A lignment Point T1032TP1062TP1058T1029T1034T1025 FTDX1200 Technical Supplement Alignment ALIGNMENT-7 MCF Adjustment (1) Set the VFO-A frequency to 14.200 MHz in the CW-USB mode. Set the following controls as indicated: ANT : ANT 1 IPO : AMP1 ATT : OFF -TUNE : THRU R.FLT : 1

42、5 kHz AGC : AUTO RF GAIN : Fully clockwise Connect the AF millivoltmeter and 4 Ohm dummy load to the EXT SP jack. Connect the RF Signal Generator to the “ANT 1” jack, then set the output level to 0 dB at the 14.200 MHz. Adjust T1015 and T1018 on the MAIN Unit in succession several times for maximum

43、deflec- tion on the AF millivoltmeter. Note: If the S-meter deflects while adjusting, re- duce the RF Signal Generator output so that the S-meter does not defmect. IF Trap Adjustment Set the VFO-A frequency to 50.100 MHz in the CW-USB mode. Set the following controls as indicated: ANT : ANT 1 IPO :

44、AMP1 ATT : OFF R.FLT : 3 kHz AGC : AUTO RF GAIN : Fully clockwise Connect the AF millivoltmeter and 4 Ohm dummy load to the EXT SP jack. Connect the RF Signal Generator to the “ANT 1” jack, then set the output level to +40 +80 dB at the 40.455 MHz. Adjust T1008 on the MAIN Unit for minimum defmectio

45、n on the AF millivoltmeter. Note: If the S-meter deflects while adjusting, reduce the RF Signal Generator output so that the S-meter does not defmect. mAin Unit (ReCeiveR seCtion ) A lignment Point T1015T1008T1018 FTDX1200 Technical Supplement Alignment ALIGNMENT-8 MCF Adjustment (2) Set the VFO-A f

46、requency to 50.100 MHz in the FM mode. Set the following controls as indicated: ANT : ANT 1 IPO : AMP2 ATT : OFF R.FLT : AUTO AGC : AUTO RF GAIN : Fully clockwise Connect the SINAD meter and 4 Ohm dummy load to the EXT SP jack. Connect the RF Signal Generator to the “ANT 1” jack, then set the output

47、 level to 10 0 dB at the 50.100 MHz with 3.5 kHz deviation FM modulation of a 1 kHz audio signal. Adjust T1015 and T1018 on the MAIN Unit in succession several times for maximum deflec- tion on the SINAD meter. Note: Do not adjust T1015 and T1018 more than 180 degrees rotation. Noise Blanker Circuit

48、 Adjustment Set the VFO-A frequency to 14.200 MHz in the CW-USB mode. Set the following controls as indicated: ANT : ANT 1 IPO : AMP2 ATT : OFF R.FLT : AUTO AGC : AUTO NB : ON (for short-duration pulse noise) RF GAIN knob: Fully clockwise Connect the Digital DC voltmeter (high-Z) to TP1054 on the MA

49、IN Unit. Connect the RF Signal Generator to the “ANT 1” jack, then set the output level to 50 dB at 14.200 MHz. Confjrm on the DC voltmeter reading less than 2.30 V. Turn the NB to “OFF”. TP1054T1015T1018 mAin Unit (ReCeiveR seCtion ) A lignment Point FTDX1200 Technical Supplement Alignment ALIGNMENT-9 RF AGC Adjustment Set the following controls as indicated: ANT : ANT 1 IPO : AMP1 ATT : OFF R.FLT butuon: 3 kHz AGC butuon: AUTO RF GAIN knob: Fully clockwi