SONY S525 uses servo + C-cube decoding, is very representative of a model Kim , Kim is currently on the market the more popular brand Super VCD and VCD produced almost all of the recent adoption of the program , such as the S500, S505, S506, S508 , S520, S520G, S525, S525A, S525G, S526, S528, S530, S533, f300, F320, J335, j336, J337 , these models despite some differences on the appearance of features, but basically the same circuit. Servo aspects , SONY chip though after a few changes, such as pre-amplification CXD2550 CXD2549 and improved , but there are some changes in the input . Digital processing chip has adopted CXD2585, CXD3008, CXD3068, its pin functions are identical , only the operating voltage is different. On the decoding circuit , basically nothing changes, but with the new software features made ​​some changes , such as games, repeat Chorus , 3D sound and other gold . S525 in the power supply design, abandoned the traditional linear and switching power supply , so that the overall performance greatly improved. The following is a block diagram of the whole and the whole IC menus:

 

Second, the process

1, the system reset

Instantaneous power , 5V operating voltage to the decoder board , reset circuit consists of Q2, R32, C118, D9 composed , gave CL8830A a 52 foot high reset signal for CL8830A internal CPU reset , then the CL8830A ( 169 ) feet , respectively CXD3068, BA6392 reset , after which the microprocessor chip to establish communication with the relationship .

2 , the system detects

Connecting doors CL8830A first detected the first 27 feet of the switch is in place , if not in place , CL8830A from ( 15 ) , ( 16 ) pin outputs a drive signal to the BA6208 (2), (3) feet from BA6208 (7), (8 ) foot drive motor rotates out of position to make the doors in place. Then detects the laser assembly in place , if the connection 3068 ( 26 ) feet of the limit switch is not in place, 3068 will issue a report to the CL8830A through data lines , CL8830A then issued a directive to 3068 , from 3068 ( 29 ) , ( 30 ) pin output the driving signal to the laser assembly in place.

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