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1、 Modified: 2009-11-04 Page 1 of 12 THIS DOCUMENT IS CONFIDENTIAL. IT MAY NOT BE REPRODUCED WITHOUT THE WRITTEN PERMISSION OF Lab.gruppen AB 2006 Lab.gruppen AB, Faktorvgen 1, S-434 44 KUNGSBACKA, SWEDEN Checklist after service of class TD Mark II C 16:4, C 28:4, C 48:4, C 68:4, C 88:4, FP 4000, FP 6
2、000Q, FP 7000, FP 9000, FP 10000Q, FP 13000 & FP 14000 Created by: Patrick Bergwall Date: 2007-04-23 RadioFans.CN 收音机爱 好者资料库 Modified: 2009-11-04 Page 2 of 12 THIS DOCUMENT IS CONFIDENTIAL. IT MAY NOT BE REPRODUCED WITHOUT THE WRITTEN PERMISSION OF Lab.gruppen AB 2006 Lab.gruppen AB, Faktorvgen 1, S
3、-434 44 KUNGSBACKA, SWEDEN Index 1 INTRODUCTION.3 2 CHECK LIST CLASS TD MARK II.3 RadioFans.CN 收音机爱 好者资料库 Modified: 2009-11-04 Page 3 of 12 THIS DOCUMENT IS CONFIDENTIAL. IT MAY NOT BE REPRODUCED WITHOUT THE WRITTEN PERMISSION OF Lab.gruppen AB 2006 Lab.gruppen AB, Faktorvgen 1, S-434 44 KUNGSBACKA,
4、 SWEDEN 1 Introduction This checklist shall be used to make sure the amplifier is always checked in a proper way after service has been done. It is important to follow the steps in this check list and check all points so that the set up of parameters in the amplifier is correct adjusted. When have d
5、one all checks and adjusted the parameters the amplifier will work properly and will have the output power that it is designed for. 2 Check list class TD Mark II Always clean the amplifier by blowing with compressed air through coolers and fans. Be careful when blowing where big electrolytic capacit
6、ors are placed so that the capacitor doesnt get damaged. RadioFans.CN 收音机爱 好者资料库 Modified: 2009-11-04 Page 4 of 12 THIS DOCUMENT IS CONFIDENTIAL. IT MAY NOT BE REPRODUCED WITHOUT THE WRITTEN PERMISSION OF Lab.gruppen AB 2006 Lab.gruppen AB, Faktorvgen 1, S-434 44 KUNGSBACKA, SWEDEN 1) After repair a
7、lways start the amplifier with current potentiometer (VR1) located on PWMF1-board. On is clockwise (cw) and off is counter clockwise (ccw). Check that the switch pulse is normal. 300V line should increase some volts when relay clicks. 1. Connect an oscilloscope probe. Measuring points (old layout).
8、Measuring points (new layout). 2. VR1 fully ccw. VR1-PWMF1 VR1 Modified: 2009-11-04 Page 5 of 12 THIS DOCUMENT IS CONFIDENTIAL. IT MAY NOT BE REPRODUCED WITHOUT THE WRITTEN PERMISSION OF Lab.gruppen AB 2006 Lab.gruppen AB, Faktorvgen 1, S-434 44 KUNGSBACKA, SWEDEN 3. Insert mains plug into variac. 4
9、. Mains switch ON and remote switch MANUAL 5. Slowly turn variac up, at the same time look at power- supply oscilloscope. 230VAC 6. Begin turning VR1 cw. Waveform should look like below picture. Modified: 2009-11-04 Page 6 of 12 THIS DOCUMENT IS CONFIDENTIAL. IT MAY NOT BE REPRODUCED WITHOUT THE WRI
10、TTEN PERMISSION OF Lab.gruppen AB 2006 Lab.gruppen AB, Faktorvgen 1, S-434 44 KUNGSBACKA, SWEDEN 7. At a certain point, power supply will regulate. Then, turn current potentiometer fully cw. 120-140V +/- RAIL 8. Power supply frequency decreases, PAL led goes out. 23kHz 43S Modified: 2009-11-04 Page
11、7 of 12 THIS DOCUMENT IS CONFIDENTIAL. IT MAY NOT BE REPRODUCED WITHOUT THE WRITTEN PERMISSION OF Lab.gruppen AB 2006 Lab.gruppen AB, Faktorvgen 1, S-434 44 KUNGSBACKA, SWEDEN Step 9, 10 Only for C 16:4, C 28:4, C 48:4, C 68:4, C 88:4, FP 4000, FP 6000Q, FP 7000 & FP 10000Q. 9. Begin turning voltage
12、 adjust potentiometer. At 174V (+/- 2V) power supply will stop. ca +/- 174V VR1-SP100F/ VR1-SP130F 10. Adjust voltage. +/- 160V VR1-SP100F/ VR1-SP130F Adjustment point Measuring points Modified: 2009-11-04 Page 8 of 12 THIS DOCUMENT IS CONFIDENTIAL. IT MAY NOT BE REPRODUCED WITHOUT THE WRITTEN PERMI
13、SSION OF Lab.gruppen AB 2006 Lab.gruppen AB, Faktorvgen 1, S-434 44 KUNGSBACKA, SWEDEN Step 11, 12 Only for FP 9000, FP 13000 & FP 14000. 11. Begin turning voltage adjust potentiometer. At 220V (+/- 2V) power supply will stop. ca +/- 220V VR1-SP130F 12. Adjust voltage. +/- 200V VR1-SP130F Adjustment
14、 point Measuring points Modified: 2009-11-04 Page 9 of 12 THIS DOCUMENT IS CONFIDENTIAL. IT MAY NOT BE REPRODUCED WITHOUT THE WRITTEN PERMISSION OF Lab.gruppen AB 2006 Lab.gruppen AB, Faktorvgen 1, S-434 44 KUNGSBACKA, SWEDEN Step 13 Only for C 16:4, C 28:4, C 48:4, C 68:4, C 88:4, FP 4000, FP 6000Q
15、, FP 7000 & FP 10000Q. 13. Measure voltages according to chart: 1 GND - 2 ca 2V Trafotemp 3 +25V 15VUnr 4 GND - 5 +58V 50VUnr 6 -18V 50VUNrR 7 +15V Pwrgood 8 +5V PAL Step 14 Only for FP 9000, FP 13000 & FP 14000. 14. Measure voltages according to chart: 1 GND - 2 ca 2V Trafotemp 3 +22-23V 15VUnr 4 G
16、ND - 5 +52-53V 50VUnr 6 -18V 50VUNrR 7 +15V Pwrgood 8 +5V PAL Modified: 2009-11-04 Page 10 of 12 THIS DOCUMENT IS CONFIDENTIAL. IT MAY NOT BE REPRODUCED WITHOUT THE WRITTEN PERMISSION OF Lab.gruppen AB 2006 Lab.gruppen AB, Faktorvgen 1, S-434 44 KUNGSBACKA, SWEDEN 15. Following tests are made for al
17、l Channels, check offset with no input +/- 40mV. Following tests are made for all Channels, check offset with no input and no load +/- 2V. Increase input signal and check output signal at clip 8 Wave measured at 1.3kHz. Wave measured at 13kHz. Modified: 2009-11-04 Page 11 of 12 THIS DOCUMENT IS CONF
18、IDENTIAL. IT MAY NOT BE REPRODUCED WITHOUT THE WRITTEN PERMISSION OF Lab.gruppen AB 2006 Lab.gruppen AB, Faktorvgen 1, S-434 44 KUNGSBACKA, SWEDEN 16. Check HF-wave at 1.3kHz and 13kHz at 8. 4 channel amplifier 2 channel amplifier No input signal No input signal Clip 1.3 kHz. Clip 13 kHz. Modified:
19、2009-11-04 Page 12 of 12 THIS DOCUMENT IS CONFIDENTIAL. IT MAY NOT BE REPRODUCED WITHOUT THE WRITTEN PERMISSION OF Lab.gruppen AB 2006 Lab.gruppen AB, Faktorvgen 1, S-434 44 KUNGSBACKA, SWEDEN 17. Power supply frequency increases when loaded. 40kHz 18. Short capacitors according to pictures (Ch A=C1
20、, Ch B=C101, Ch C=C201, Ch D=C301). Fans will increase speed, TEMP leds on front will light, Signal will go out. AICO 19) Check mains switch for bad contact (click noise). 20) Check gain potentiometers at front. No disturbance at output signal shall be detected when turning the potentiometer from one end point to the other end point. 21) Check dust filter, change when needed. 4 Channels 2 Channels
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