Cooper Bussmann 858 - Manual (Page 27)

DOCUMENT 1025
REV. H
Instruction Manual
AGS-LED
858 LED Series
Sizes 1, 2, 3, 4 and 5
18
10.11 Sign PC Board P/N 62277 Calibration
The 62277 PC Board doesn’t normally need to be calibrated in the field unless an LED MODULE is
replaced.
WARNING:
IMPORTANT
In this section, it is assumed that the Sign PC Board P/N 62277 is
correctly configured for this particular sign (see Table 1or 2) and
that the sign lights continuously when main power is applied in
the normal mode of operation (SW3-1 = OFF).
INSTRUCTIONS FOR CALIBRATION OF 62277 PC BOARD:
1. Turn off main power to the sign.
2. Open the Power Supply Cover and locate SW3-1 on the Power Supply Board (See Figure 18)
3. On the Power Supply Board, set switch SW3-1 to the ON position.
4. Apply main power to the sign. Green LED D3 will flash ON/OFF slowly for approximately three
seconds to indicate the beginning of the calibration process. During calibration, D3, will remain OFF.
At the conclusion of the calibration process, D3 remain constant ON (see Figure 18).
5. If D3 does not light and remain constant, then calibration has failed. Based on the assumption listed
under WARNING above, replace the power supply board (See section 10.12)
5. Turn off the main power to the sign.
6. Set SW3-1 to the OFF position.
7. Close the Power Supply cover.
8. The Power Supply Board is now calibrated to the sign.
10.12 Replacing Sign Power Supply Board & Heat Sink P/N 62277
In this section, it is assumed that the sign has failed and the trouble shooting guide recommends
replacement of the Power Supply Board.
INSTRUCTIONS FOR REPLACING 62277 PC BOARD & HEAT SINK: