Cynosure Cynergy, Technical Manual

Page: 88 / 194

86 of 112 850-1265-000, Rev. 4 Cynosure, Inc.
Replacing IGBT Triple Driver PCB, PDL
1. Unplug the Fastons connecting the PCB to the triple driver PCB. Keep track of which
wire goes to which connector, e.g., Faston 1 goes to Faston 2, Faston 2 goes to Faston 1.
2. Remove the mounting screws for the PCB and the screws that mount direct to the IGBT.
All screws should be accessible with a long #2 Phillips.
3. Remove the optical connectors, keeping track of their locations on reassembly.
4. Slide the PCB out the side and reverse the procedure to install a new PCB.
Replacing Simmer/Snubber PCB, PDL
1. Unplug the AC.
2. Remove the mounting screws for the PCB and the screws that mount direct to the IGBT.
All screws should be accessible with a long #2 Phillips.
3. Slide the PCB out the side and reverse the procedure to install a new PCB.
Replacing the Trigger Transformers
The trigger transformers strike a rapid high voltage spike to initiate breakdown of the lamps to
start the low current simmer. Once triggered, the lamps break down noticeably and produce a
brief blue glow. This is an indication that the transformer is working.
To replace the trigger transformers, perform the following steps.
1.
Detach the AC input to the trigger transformer and all other electrical terminations.
2. Unscrew the transformer from the resonator mount.
3. Remove the old simmer trigger transformer.
4. Attach the new simmer trigger transformer.
Replacing the Simmer Transformers
The AC provided to the simmer supplies passes through two transformers, one for the YAG
(135 VA) and one for the PDL (170 VA). These are both located on the lower chassis near the
isolation transformer. One reason to replace the simmer transformers is if the AC is not present
at the input to the simmer PCBs, yet the fuses are good.
To replace the simmer transformers, perform the following steps.
1.
Remove the side skins. Identify the transformer that needs replacement.
2. Remove the damaged simmer transformer.
3. Attach the new simmer transformer.
4. Verify that the low current simmer is maintained.