RD700 Sub Chassis Removal/Replacement

Has anyone removed a sub chassis on Roland RD700? I need help. Thanks!

First thing is to remove keybed from instrument, remove hammer upstop felt assy, contact pc bds, keys for the broken module, hammers for the keys, a few screws, remove sub chassis, reverse assy. Be aware though the the hammer upstop felt is a bit tricky to get back in and may require a new one if it has damage to it.