Heckler&Koch MR556A1 User Manual
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SECTION 9 — TROUBLESHOOTING PROBLEMS AND REPAIR
This section contains operator level troubleshooting information for locating and
correcting most of the operating troubles which may develop in the MR556A1 Series.
Each malfunction for the individual part or assembly is followed by a list of tests or
inspections which will help you to determine the corrective actions in the order listed. This
manual cannot list all malfunctions that may occur, or all tests or inspections and corrective
actions.
If a malfunction is not listed or is not corrected by listed corrective actions, please contact
Heckler & Koch Customer Service staff. The symptom index is provided for a quick
reference of the malfunctions covered in the table. The MR556A1 must always be treated
as if loaded until the stoppage has been cleared. The following list does not include all
potential causes and/or corrective actions. Other causes than those indicated below may
be encountered.