STUDIO DUE 0102, Manual

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MOTORS BOARD
• POWER 30V Led On
• +5V Led
• +320V Led
•+5V DMX Led
• DMX signal
Led flashing: the DMX signal is operating on the board
Led off: check the U1 (6N137) and the DMX connecting cable (from PCB PAN IP)
• STEPPER MOTOR channel not working: (i.e. YELLOW):
1) Switch off the fixture and disconnect the YELLOW and CYAN cables
2) Connect the YELLOW cable on the CYAN connector
3) Switch on the fixture:
3a) If the YELLOW motor works normally it is necessary to replace the U6 (L6219)
3b) If the motor is still not working check with extreme attention the motor and the interconnecting circuits (cables and
connectors). To check the cables and the motors you can measure the resistance as follows:
between PIN 1 and PIN21 (on IC U6)r=~18ohm; between PIN 2 and PIN5 (on IC U6) r=~18ohm
• If the led +5V OPTODMX is off:
1) Disconnect TO DISPLAY PCB PAN IP connector; if the led is on check PCB PAN IP
2) Check U13 (78M05), L3, D6
• If the led +5V is off:
1) Disconnect TO DISPLAY PCB PAN IP connector; if the led is on check PCB PAN IP
2) Check D4, L2, U12
•If the led +28V is off:
1) Check if the led +320V is on, if it is ok:
1a) Check if U11 is in thermal drift
(ATTENTION on the heat dissipator there is dangerous tension!!!!)
1b) Check if U5, U6, U7, U8, U9 are in short-circuit. Switch off the fixture. Remove all the chips from the socket.
Switch on the fixture: if the led is on, insert the chips one by one in the sockets to find out which is in short-circuit.
1c) Check D3
1d)
If all the operations described above have not given any positive result, change U11
2) If the led +28V is off together with the led +320V
2a) Check the MAIN POWER INPUT where you can measure the working voltage
2b) Check the main fuse, if it is blown check VR1 (normally it has a resistance =
∞ ). If it is in short circuit you must change it.
2c) Check D1 (Bridge Rectifier), if it is ok check C65.
2d)
If the fuse is still blown, change U11