Toshiba e-STUDIO500P Service Manual page 62

Service error codes (9xx.xx) (continued)
Error Sub
Display text
code codes
937 .4 Overspeed detected
during speed control.
Motor is type 0.
937 .41 Overspeed detected
during speed control.
Motor is type 1.
937 .5 Overspeed detected
during position control.
Motor is type 0.
937 .51 Overspeed detected
during position control.
Motor is type 1.
937 .7 Loss of lock detected by
higher level code. Motor
is type 0.
937 .71 Loss of lock detected by
higher level code. Motor
is type 1.
937 .80 Driver over temperature
detection. Motor is
type 0.
939 .00 RIP–engine
communications lost.
940 .00 LVPS zero-crossing test
failed.
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
948 .00 Pel clock check failed
2-26
Service Manual
Description
• Faulty motor sensor
• Faulty system board
• Faulty motor sensor
• Faulty system board
• Faulty motor sensor
• Faulty system board
• Faulty motor sensor
• Faulty system board
• Defective motor cable
• Defective main drive motor
• Paper jams
• Defective motor cable
• Defective main drive motor
• Paper jams
• Excessive gear loading in gearbox
assembly
System board
• Incorrect LVPS installed
• Noisy AC power source
• LVPS to system board cable loose
PQET failed to pass RAM tests on the
system board
System board
Action
Go to "Main drive service
check" on page 2-105.
Go to "Main drive service
check" on page 2-105.
Go to "Main drive service
check" on page 2-105.
Go to "Main drive service
check" on page 2-105.
Go to "Main drive service
check" on page 2-105.
Go to "Main drive service
check" on page 2-105.
Go to"Main drive service
check" on page 2-105.
POR the printer several times, if
the error code continues to be
displayed, replace the system
board. See "System board
and inner shield removal" on
page 4-76.
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 4-54.
Replace the system board. See
"System board and inner
shield removal" on page
Replace the system board. See
"System board and inner
shield removal" on page
4-76.
4-76.