Sensata Magnum Energy MSH Series User manual

© 2017 Sensata Technologies
Service Instructions: 64-1012 Rev A 1
MSH Control Board Removal and Replacement
1.0 Description
These instructions provide information on removing
the control board in a MSH Series inverter/
charger and replacing with a new control board
(PN: TCB-MSHXXXXM or PN: TCB-MSHXXXXRE).
Note: This document is part of a series of service
instructionstohelpqualifiedpersonnelreplacecomponents
that have failed or have been damaged.
2.0 Installation Preparation
Before removing or replacing the control board, read this
entire document and follow all instructions.
2.1 Safety Precautions
Follow all electrical safety precautions and the ESD
prevention guidelines below, and in Service Instructions:
64-1000 – Electrical Safety Precautions and Electrostatic
Discharge Prevention.
Warning: Hazardous voltages are present within
the inverter when power is applied. Do not remove
the inverter’s top cover without first turning off
and disconnecting all AC and DC power to the
inverter. Always replace the top cover before
reconnecting power.
Warning: The capacitors inside the inverter
store electric energy even after all AC and DC
power is removed. After disconnecting all AC
and DC power to the inverter, wait 5 minutes for
the energy in the capacitors to dissipate before
working on the unit.
Caution: Observe all ESD safety precautions
while working with the control board and
within the inverter. Failure to follow ESD safety
precautions could result in damage to internal
components and the inverter.
2.2 Included Materials
Before dismantling the inverter, inspect the new control
board to ensure there is no obvious physical damage.
Look at the Model ID label on the new control board (see
Figure 1) and verify that the model number on this label
corresponds to the model number of the inverter that is
being repaired. Contact Sensata Technologies if any item
appears to be damaged, missing or incorrect.
Note: All removed items must be returned if repair is for
warranty consideration. Save the packing material and
shipping container to use when returning the removed
items.
2.3 Required Tools and Equipment
Before disassembling the inverter, ensure you have the
following tools and equipment to remove and replace the
control board:
• T15 Torx head screwdriver (≥6” shaft required)
– for #6-32 screws
• T25 Torx head screwdriver – for #10-32 screws
• 7/16” socket, socket wrench and ≥6” extension
– for ¼-20 bolts
• Torque wrench (130 in-lbs torque required)
– for ¼-20 bolts with 7/16” head
• Phillips screwdriver
Figure 1, MSH Series Control Board
www.SensataPower.com
a product
brand of:
4"
MSH Series - Model ID Label
L-brackets:
location for
#6-32 screws (x2)

2© 2018 Sensata Technologies
MSH Control Board Removal and Replacement
Figure 2, Top View of an MSH Control Board
3.0 Removing and Replacing the MSH
Series Control Board
This section provides information on removing and
replacing the control board in a MSH Series inverter.
3.1 Removing the MSH Series Control Board
1. Remove the MSH inverter’s top cover and review the
internal components as shown in Service Instructions:
64-1007 – MSH Top Cover Removal and Replacement
with Internal Component Identification.
2. Locate the MSH Series control board in the inverter
(Figure 2, Item A), and then remove the two #6-32
screws securing it to the inverter base (Figure 1).
3. Remove the Phillips screw and the ¼-20 bolt
(7/16” head) that connect the FET and transformer
busbars to the MSH’s control board, respectively
(Figure 2, Items B & D).
4. Grasp the control board by its top edge (or upper
corners) and firmly pull up to remove it from the
bottom 16-pin FET board connector.
5. Locate and disconnect the 16-pin ribbon connector.
See Figure 2, Item C.
The MSH control board is now removed. Using
ESD precautions, place it component-side up on a
grounded, static-free surface until it can be placed
in an antistatic bag to be returned with any other
replaced components.
Control
Board
(vertical)
Phillips Screw B
¼-20 Bolt
(7/16” head)
D
16-Pin Ribbon
Connector
(red line on top)
C
A
3.2 Replacing the MSH Series Control Board
Note: If the FET board also needs to be replaced,
follow the information described in Service Instructions:
64-1005 – Large FET Board Removal and Replacement,
before replacing the control board.
1. Remove the new control board from its antistatic bag,
and then connect the 16–pin ribbon cable connector.
Before pushing in the connector, ensure it is seated
with the red stripe on the ribbon cable facing toward
the rear of the inverter and the connector pins are
aligned correctly.
2. Insert the new control board into the bottom
16-pin connector located on the FET board. Ensure the
connector pins are aligned correctly before pushing in.
3. Replace the two #6-32 screws (T15 head) to secure
the new control board to the FET board.
4. Reconnect the Phillips screw and the ¼-20 bolt
(7/16” head) that connect the MSH’s control board
to the FET and transformer busbars, respectively
(Figure 2, Items B & D).
The new control board is now installed, review all the
connections a final time and ensure they are correct.
5. If there are no other internal components to replace,
reinstall the top cover as described in Service
Instructions: 64-1007 – MSH Top Cover Removal and
Replacement with Internal Component Identification.