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The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.
Welcome. The scheme is clearly helped me to repair. Worth to download it.
Excellent manual, very clear, technical specification provided, useful information regarding adjustment and set up.
fast and easy and exactly what I was looking for. Not the cheapest but value for money after all.
The manual for the Sansui P-L75 was not one of the more informative turntable manuals around but for $5 it was helpful enough.
ADJUSTMENT / è°æ´
Replacing Q22 (FET TX final)
1. Place Q22 in its location, upside down as shown in figure 1. Make sure the location of each pin is correct. The bevelled edge is located between pin 1 and 2. (See the figure below) Replace the heat conductor sheet (G11-2664-x4) when replacing Q22. TX-RX UNIT A/3 Foil side
TC2 TC1 1st IF
éç½®Q22 (FET åå°ç»ç«¯)
1. å¦å¾1æç¤ºï¼å°Q22ä¸ä¸é¢ åæ¾å¨å®çå¯¹åºä½ç½®ã æ¯ä¸ªç®¡èçä½ç½®ä¸å®è¦æ£ç¡®ãæè§ä½äºç®¡è1ä¸ç®¡è2ä¹é´ã ï¼å¦ä¸å¾æç¤ºï¼ å½ç½®æ¢Q22æ¶ï¼éç½®çå¯¼èï¼G11-2664-x4ï¼ã
Bevelled edge / æè§
Q22 D S G
Metal post éå±æ
Fig. 1 / å¾1
2. The bottom surface of Q22 must be firmly contacted to the TX-RX PCB. Solder each pin onto the top of the metal posts. Make sure the solder is between the pin and the metal post (Refer to figure 2). 2. Q22çåºé¨è¡¨é¢å¿
â¢ Make sure you are properly grounded while soldering the Q22. â¢ Avoid adding excess solder to the metal post. â¢ Make sure the bottom surface of Q22 is firmly contacted to the TX-RX PCB. â¢ The metal posts for the pins are also soldered to the PCB. So, when you solder the Q22 pins to the metal posts, keep the soldering time as short as possible so that the posts are not moved.
Excessive soldering / è¿åº¦çæ¥
â¢ â¢ â¢ â¢ å½çæ¥Q22æ¶ä¸å®è¦å°çåç¢¾ç£¨æ°å½ã é¿å
åéå±ææ·»å è¿å¤çåã Q22çåºé¨è¡¨é¢ä¸å®è¦ä¸åå°-æ¥æ¶PCBç´§å¯ç»åã ç®¡èæå¯¹åºçéå±æä¹è¦ä¸PCBçæ¥å¨ä¸èµ·ã æä»¥ï¼å°Q 2 2 ç®¡èä¸éå±æçæ¥èµ·æ¥æ¶ï¼å°½å¯è½ä½¿çæ¥æ¶é´ è¶çè¶å¥½ï¼è¿æ ·éå±æä¸æè¢«ç§»å¨ã
Good soldering / çæ¥è¯å¥½ Metal post / éå±æ PCB
Wrong! The bottom surface must be firmly contacted to the PCB. éè¯¯ï¼åºé¨è¡¨é¢å¿
Fig. 2 / å¾2