START-UPZEISS Mounting standard components Axioscope 5/7/Vario70 430035-7344-001 03/20183.1.22.2 Changing the LED modules in the Colibri 3 illumination systemHow to change an LED module, i.e. the LED module for LED slot 1 (Fig. 3-38/):• Remove the Colibri 3 from the stand: Follow the instructions of section 3.1.22.1 in reverse order.• Loosen the four captive clamping screws (Fig. 3-38/5) on the front side with an Allen wrench (AF3).• Remove the back cover (Fig. 3-38/7).• Disconnect the LED module power cable connector (Fig. 3-38/1.1) from the PCBA (Fig. 3-38/1.6).• Loosen the knurled knob (Fig. 3-38/1.3) by hand and remove the old LED module (Fig. 3-38/1.4).• Select the right LED module with matched LED-specific labels (Fig. 3-38/1.2 and 1.5) and insert it inthe correct slot (Fig. 3-38/).NOTEOne label on the LED slot (Fig. 3-38/1.5) indicates the wavelength range for this position; theother label on the LED module housing (Fig. 3-38/1.2) indicates the wavelength of the LEDmodule. See the table below as well.• Tighten the knurled knob (Fig. 3-38/1.3) again.• Push the LED module power cable connector (Fig. 3-38/1.1) back to the PCBA (Fig. 3-38/1.6).• If required, replace the LED modules of LED slots 2, 3 and 4 (Fig. 3-38/, and ) in the sameway.• Mount the back cover (Fig. 3-38/7) and fasten the four anti-loss clamping screws (Fig. 3-38/5) with anAllen wrench (AF3).• Re-mount the Colibri 3 on the stand again (see section 3.1.22.1).Fig. 3-38 Changing the LED modules in the Colibri 3 illumination system
