Canon 580EXII Service Manual page 47

3. PCB Ass'y (I) removal
・Remove the lead wires from the PCB Ass'y (A). (Soldered in 6 places) (Fig. 019)
4. Detach the Light Guide Plate, the LCD, and the LCD Connector.
5. Detach the Flash Test Button Ass'y.
6. Detach the packing. (2 places)
NOTE  ：Locations to Apply Rear Cover Grease FLX-2 and G-177 (Fig. 020)
Grease FLX-2
Bracket Holder Cap and PC
Terminal Cap attachment holes
Grease FLX-2
Grease G-177
Rear Cover slider
Fig. 019 Lead Wires
Fig. 020 Rear Cover Application Locations

Repair Information
Grease FLX-2
Grease FLX-2
Battery Case attachment groove