Dell 2135cn Service Manual page 563

Chapter 3 Removal and Replacement Procedures (RRPs)
15) Disengage the connector (P/J211) of
the DRIVE ASSY MAIN (PL7.1.2), release
all the harness from the hooks of the
DRIVE ASSY PH.
16) Disengage the two connectors (P/J24,
26) on the PWBA MCU (PL10.7.7).
17) Release the harnesses from the
CLAMP LOCKING (PL10.5.10), pull it out
from the hole of the CHASSIS MCU.
3 - 61
Version 1 2008.02.01