Toshiba e-studio120 Service Manual page 84

Check the main motor operation with SIM 25-01.
Check the Lock signal.
Does not operate. Check the connector CN107 (MCU), and the connector on the motor side.
If the MMLD signal is not delivered from the MM, replace the MM.
If the MMLD is delivered to the MCU, replace the MCU.
Check the connector
Check the MM drive signal.
CN107, 4 pin (MMD)
CN107, 7, 8 pin (24V)
Check the polygon motor operation with SIM 25-10.
Check the Lock signal.
Does not operate. Check the connector CN119 (MCU) and the connector on the motor side.
If the PMRDY is not delivered from the PM, replace the LSU.
If the PMRDY is delivered to the MCU, replace the MCU.
Check the connector.
Check the PM drive signal.
CN119, 16 pin (PMD)
CN119, 14 pin (PMCLK)
Ch119, 18 pin (24V)
Cancel U2 with SIM 16.
US can be canceled.
Make a copy.
U2 cannot be canceled.
Trouble in the EERPOM or its peripheral circuit (SCL, SDA)
EEPROM
Operates.
MMLD
MM
Check the MMLD signal (3 pin).
If the MMD is delivered from the MCU, replace the MM.
If the MMD is not delivered from the MCU, replace the MCU.
If 24V is not supplied,
check the connector and its
peripheral.
Operates.
PMRDY
PM
Check the PMRDY signal (15 pin).
If the PMD is delivered from the MCU, replace the LSU.
If the PMD is not delivered from the MCU, replace the MCU.
If 24V is not supplied,
check the connector
and its peripheral.
Turn off and on the power
1 (CPU section) signal
SCL
CPU
SDA
MCU
Follow the MMLD signal in the MCU.
Follow the MMD signal.
MCU
Follow the PMRDY signal in the MCU.
Follow the PMD signal.
Check that U2 error does not occur.
If it does occur again, go to the procedure of "U2 cannot be canceled."