Toshiba e-Studio 120 Service Manual page 79

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Check the main motor operation with SIM 25-01.
Does not operate.
Check the connector
Check the MM drive signal.
CN107, 4 pin (MMD)
CN107, 7, 8 pin (24V)
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Check the polygon motor operation with SIM 25-10.
Does not operate.
Check the connector.
Check the PM drive signal.
CN119, 16 pin (PMD)
CN119, 14 pin (PMCLK)
Ch119, 18 pin (24V)
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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
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Operates.
MMLD
Check the Lock signal. MM
Check the connector CN107 (MCU), and the connector on the motor side.
Check the MMLD signal (3 pin).
If the MMLD signal is not delivered from the MM, replace the MM.
If the MMLD is delivered to the MCU, replace the MCU.
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
Check the Lock signal. PM
Check the connector CN119 (MCU) and the connector on the motor side.
Check the PMRDY signal (15 pin).
If the PMRDY is not delivered from the PM, replace the LSU.
If the PMRDY is delivered to the MCU, replace the MCU.
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
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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."