User Guide

Crestron CNAMPX-12/16X60 Professional Audio Amplifiers
8. Re-connect all connectors (one for the CNAMPX-12X60, six for the
CNAMPX-16X60) to the card.
9. Perform the appropriate step below.
9a. If performing another internal replacement procedure, proceed to
that procedure.
9b. If NOT performing another internal replacement procedure,
perform the “Cover Installation and Reconnect Unit” procedure on
page
16.
In-Rush Surge Suppressor Replacement
Follow the instructions below to replace the in-rush surge suppressor in the
CNAMPX-12/16X60.
Tools/material required
Grounding strap or grounded workstation
#2 Phillips screwdriver
Needle-nose pliers
1/8-inch hex wrench (supplied with the unit)
5/64-inch hex wrench (not supplied)
Thread sealer (Three Bond 1401C or equivalent)
WARNING: To prevent bodily injury or equipment damage, position the
CNAMPX-12/16X60 POWER switch to OFF, disconnect the power cord, and detach
Cresnet from the NET port.
1. Perform the “Disconnect Unit and Cover Removal” procedure provided
on page
5.
2. Once the top cover is removed, locate the terminal block assembly in
the left front corner near the power switch.
3. Using needle-nose pliers, carefully remove the “push-on” type
connectors one at a time, and connect them to the corresponding
connection on the replacement in-rush surge suppressor assembly, part
number 2008782, one at a time to avoid incorrect wiring.
NOTE: The two brown and black wires that are screwed into place DO-NOT need
to be removed, as they are included in the new assembly.
4. Remove the large black and white wires on the top of the main relay (to
the left of the terminal block) one at a time, and replace them with the
like wires from the new assembly.
5. Tilt the chassis on its side and, using the 5/64-inch hex wrench, remove
the two 6-32 screws that mount the old assembly to the chassis.
6. Remove the old assembly.
7. Remove the 6-32 hex nuts from the old assembly and re-install onto the
replacement in-rush surge suppressor assembly. Install the assembly
into the chassis, making sure the insulator sheet remains in place, re-
using the two screws from step 5 (refer to photo).
Service Guide - DOC. 5885B Professional Audio Amplifiers: CNAMPX-12/16X60 15