Service Manual SummaSign
At the front of the PCB
51.Remove the left screw holding the power entry module in place and sufficiently loosen the right
screw of the power entry module.
At the side of the PCB
52.Remove the three vertically-aligned screws located on the right-hand cover.
On the bottom of the PCB
53.Remove the fan motor connector.
40. Note:
41. In the Type 1 models the connectors for the sensors also have to be removed.
54.
55.Remove the PCB.
To re-install, proceed in the reverse order of removal. Make sure to firmly tighten all screws.
42. Note:
43. a. When re-installing, be extremely careful to plug the connectors into the
correct holes.
44. See the drawing in section 7 for the exact positioning of the connectors.
The drawing shows the PCB of a new model (Type 2). The old model (Type 1) differs
on the following points:
45. The connector for the switch is located at the centre on the top of the
small board.
46. The connector for the head is located right of centre on the top of the
small PCB.
47. The connectors for the sensors are at the bottom of the main PCB.
48. The connector for the second X-motor is located on the small board at the
back of the PCB.
49. Each connector on the PCB has a reference.
50. b. Once the new PCB has been installed, it is very important that the data
stored on the PCB be brought in line with the head and vice versa. See section 4 on
calibration.
Replacement Guidelines 2-17
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