User manual SONY BKDSAA10

[. . . ] ROUTING SWITCHER DVS-128 BACKUP CPU BOARD BKDS-12890 BACKUP POWER SUPPLY UNIT BKDS-12891 ANALOG AUDIO INPUT BOARD BKDS-AA10 ANALOG AUDIO OUTPUT BOARD BKDS-AA11 ANALOG VIEDO INPUT BOARD BKDS-AV10 ANALOG VIDEO OUTPUT BOARD BKDS-AV11 AES/EBU INPUT BOARD BKDS-DA10 AES/EBU OUTPUT BOARD BKDS-DA11 MAINTENANCE MANUAL Part 1 1st Edition !WARNING This manual is intended for qualified service personnel only. To reduce the risk of electric shock, fire or injury, do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. Refer all servicing to qualified service personnel. ! [. . . ] The contents of the respective errors are shown in the following table. When two or more errors occur at the same time, the error No. of the first error is kept on display. Error No. 00 Content Normal run The S-BUS line is disconnected. (detected whether the line is terminated by 75 Z or not) Cross-point error Existence/absence detected at the input and output terminals do not agree. Battery backup error This error is displayed when the contents of the backup data cannot be guaranteed. Sync signal error The reference video signal cannot be detected even though the sync mode (SYN) is selected by switch S4-1 on the CPU-275 board. Fan error This indicates that the fan attached to the DVS128 has stopped. ROM/RAM error An error occurs when the ROM check-sum and the RAM writing test are performed immediately after reset. The error occurs only once when ROM version upgrading is performed. However, the CPU-275 board is judged defective if the error display does not change even when the system is reset. The error display appears temporarily then disappears when the system is reset. The CPU275 board is judged defective if the error display does not change even when the system is reset. DVS-128E MMP1 A D10 D12 D14 D17 CN3 CN4 CN5 S5 IC26 S2 S3 B C CN6 D COR1 E F G H J 1 D9 2 3 4 S6 5 6 7 S8 S4 S1 S7 (Side A/component side) D1 (A-2): ACTIVE LED The LED turns on when the bus can communicate with outside. The LED of the board in operation turns on when the CPU-275 board for backup is installed. D2 (A-2): RUN LED The LED turns on when the CPU runs normally. D5 (A-2): PRIMARY LED The LED turns on when this board is assigned to a primary station. D9 (J-2): +5 V LED The LED turns on when the PS1 (J1) fuse blows. D10 (A-1): S-BUS TX LED The LED turns on for about 0. 15 second when data is output from the REMOTE 1 connector to the S-BUS data link. It turns on continuously when the DVS-128 is used as the primary station, and turns on only when it is operated internally if the DVS-128 is used as the secondary station. D11 (A-1): S-BUS RX LED This LED turns on for about 0. 15 second when the DVS128 receives data that is addressed to the local station from the S-BUS data link via the REMOTE 1 connector. D12 (A-1): MONITOR S-BUS TX LED The LED turns on for about 0. 15 second when data is output from the REMOTE 4 connector to the MONITOR S-BUS data link. It turns on continuously when the DVS-128 is used as the primary station, and turns on only when it is operated internally if the DVS-128 is used as the secondary station. [. . . ] It is recommended to clean the fans every one month. Remove dust on the fans and finger guards using a vacumm. 4-2-1. Filters Clean the filter at the back of the front panel once every two months becasue it is apt to catch dust. c Temperature inside the DVS-128 increases when ventilation holes are blocked as dust adheres to filter. [. . . ]