Diagnostic information 2-33
7002-xxx
937 .71 Loss of lock detected by
higher level code. Motor
is type 1.
• Defective motor cable
• Defective main drive motor
• Paper jams
Go to “Main drive service check”
on page 2-153.
937 .80 Driver over temperature
detection. Motor is
type 0.
• Excessive gear loading in
gearbox assembly
Go to “Main drive service check”
on page 2-153.
939 .00 RIP–engine
communications lost.
System board POR the printer several times, if the
error code continues to be
displayed, replace the system
board. See “System board and
inner shield removal —models
X644e/X646e” on page 4-131.
940 .00 LVPS zero-crossing test
failed.
• Incorrect LVPS installed
• Noisy AC power source
• LVPS to system board cable
loose
Check to make sure the correct
LVPS assembly has been installed.
If the correct supply is installed,
check to make sure the LVPS to
system board cable is installed
correctly. If correct, replace the
LVPS assembly. See “Low voltage
power supply removal” on
page 4-109.
947 .00 PQET RAM test
incomplete,
PQET RAM test did not
complete,
PQET RAM test failed
MARCH0
PQET RAM test failed
MARCH1
PQET RAM test busy
failure
PQET failed to pass RAM tests on
the system board
Replace the system board. See
“System board and inner shield
removal —models X644e/X646e”
on page 4-131.
948 .00 Pel clock check failed System board Replace the system board. See
“System board and inner shield
removal —models X644e/X646e”
on page 4-131.
949 .00 Delay line calibration
failure
System board Replace the system board. See
“System board and inner shield
removal —models X644e/X646e”
on page 4-131.
950 .00 NVRAM mismatch Go to “950.00 through 950.29
EPROM mismatch failure” on
page 2-120. or go to “950.30
through 950.60 EPROM mismatch
failure” on page 2-121.
Service error codes (9xx.xx) (continued)
Error
code
Sub
codes
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