Radf Related Service Call (Mr) - Toshiba e-STUDIO350 Service Handbook

5.1.11 RADF related service call (MR-3015)
Note: Note:
When performing the RADF related troubleshooting, be sure to perform "Automatic adjustment of
RADF sensor and EEPROM initialization (05-356)" and "RADF original guide width adjustment
(05-367/368)" consecutively at the Adjustment Mode whenever the RADF board, original length
sensor, read sensor or reverse sensor has been replaced.
[C730] EEPROM initialization error
(1) Check the RADF board, mainly IC12, for short circuits and open circuits.
(2) Replace the RADF board.
[C740] Reverse sensor adjustment error
(1) Check if there is any foreign matter between the reverse sensor and the reflecting mirror. Check
if the reflecting mirror is dirty.
(2) Check if the harness connecting the reverse sensor and the RADF board is open circuited.
(3) Check the circuits and connectors on the RADF board, mainly IC3, IC4 and CN4, for short cir-
cuits and open circuits.
(4) Replace the reverse sensor.
(5) Replace the RADF board.
[C810] Fan motor is abnormal
(1) Check if the load on the motor shaft is normal.
(2) Remove foreign matters.
(3) Check if the harness connecting the fan motor and RADF board is open circuited.
(4) Check if the power is supplied to the pin 1 of the CN9 on the RADF board during the operation.
(5) Check the circuits and connectors on the RADF board, mainly Q12 and Q16, for short circuits
and open circuits.
(6) Replace the fan motor.
(7) Replace the RADF board.
[C820] Read sensor adjustment error
(1) Check if there is any foreign matter between the read sensor and the reflecting mirror. Check if
the reflecting mirror is dirty.
(2) Check if the harness connecting the read sensor and the RADF board is open circuited.
(3) Check the circuits and connectors on the RADF board, mainly IC3, IC4 and CN6, for short cir-
cuits and open circuits.
(4) Replace the read sensor.
(5) Replace the RADF board.
[C830] Original length sensor adjustment error
(1) Check if there is any foreign matter between the original length sensor and reflecting mirror.
Check if the reflecting mirror is dirty.
(2) Check if the harness connecting the original length sensor and the RADF board is open circuited.
(3) Check the circuits and connectors on the RADF board, mainly IC3, IC4 and CN3, for short cir-
cuits and open circuits.
(4) Replace the original length sensor.
(5) Replace the RADF board.
e-STUDIO350/352/353/450/452/453
TROUBLESHOOTING
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