Toshiba e-STUDIO556 Service Manual page 630

[CE50] Temperature/humidity sensor abnormality
Is the connector CN338 on the LGC board or the connector of the temperature/humidity
sensor (S7) disconnected?
Is the harness between the LGC board and the temperature/humidity sensor disconnected?
YES
NO
1. Check the connection of the KEY board and DSP board.
2. Check the connection of the DSP board and LGC board.
3. Replace the temperature/humidity sensor.
4. Replace the LGC board.
[CE90] Drum thermistor abnormality
Is the connector CN337 on the LGC board, or the connector of the drum thermistor
disconnected?
Is the harness between the LGC board and the drum thermistor (THM5) disconnected?
YES
NO
1. Replace the drum thermistor.
2. Replace the LGC board.
[CF70] New toner transport motor abnormality
(1) Check if the transport auger and paddle are not locked (no extraneous material or toner clod in
both the toner transport sections at the cleaner unit).
(2) Is the new toner transport motor disconnected?
(3) Check if the connector of the LGC board and connector Pins are not disconnected.
(4) Replace the new toner transport motor.
(5) Replace the LGC board.
[CF80] Hopper motor lockup
(1) Check if the recycle toner transport motor is not locked (no extraneous material or toner clod in
both the toner transport sections at the recycle toner unit).
(2) Is the disconnected?
(3) Check if the connector of the LGC board and connector Pins are not disconnected.
(4) Replace the hopper motor.
(5) Replace the LGC board.
[F090] SRAM abnormality on SYS board
(1) Turn the power OFF and start up the Setting Mode (08).
(2) When "SRAM REQUIRES INITIALIZATION" is displayed on the LCD, check the destination and
then press the [START] button. If the destination is not correct, key in the correct one and then
press the [START] button.
(3) After the confirmation message is displayed on the LCD, press the [INTERRUPT] button (to
initialize the SRAM).
(4) Perform the panel calibration (08-9050).
(5) Perform the initialization at the software version upgrade (08-9030).
e-STUDIO556/656/756/856(Ver03)
ERROR CODE AND TROUBLESHOOTING
Connect the connector securely. Replace the harness.
Connect the connector securely. Replace the harness.
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