Error code Description Action
937.71
• The main drive motor assembly may be faulty
or has failed.
• The internal duplex assembly is not properly
grounded to the LVPS. This only applies to
machines with an installed internal duplex
assembly.
Warning—Potential Damage: Ensure that the
metal frame of the internal duplex assembly is
properly grounded to the metal frame of the LVPS
with a jumper wire as shown in the graphic below.
Note: If the jumper wire is NOT present, then
install the 40X7028 internal duplex grounding kit.
This should only be done for machines with an
installed internal duplex assembly.
Go to
“Main drive motor assembly service
check” on page 227.
937.80 The main drive motor assembly may be faulty or has
failed.
Go to
“Main drive motor assembly service
check” on page 227.
937.81
939.00 RIP-engine communication lost. Go to
“System card assembly removal” on
page 283.
940.00 LVPS zero cross test fails. Replace the LVPS card
assembly.
Go to
“T650 LVPS card assembly removal” on
page 290.
940.00 Go to
“T652, T654, and T656 LVPS card
assembly removal” on page 292.
950.xx–990.xx error messages
Error code Description Action
950.00–
950.29
Mismatch between system card EEPROM and
operator panel mirror.
Go to
“NVRAM mismatch (950.00 through
950.29) service check” on page 228.
950.30–
950.60
Mismatch between secure and system.
952.xx A recoverable NVRAM Cyclic Redundancy Check
(CRC) error occurred.
Go to
“NVRAM Cyclic Redundancy Check error
service check” on page 228.
953.xx The NVRAM chip has failed on the operator panel
door assembly.
Go to
“NVRAM chip failure on operator panel
door assembly service check” on page 229.
4062
Diagnostic information
206
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