Toshiba e-Studio 162 Service Manual page 109

Main Sub
code code
E7 11 Content Shading trouble (White correction)
Detail The CCD white scan level is abnormal when the
shading.
Cause Improper connection of the CCD unit flat cable
Dirt on the mirror, the lens, and the reference
white plate
Copy lamp lighting abnormality
CCD unit abnormality
MCU PWB abnormality
(When occurred in the ADF scan position.)
Improper installation of the mirror unit
Check Clean the mirror, lens, and the reference white
and plate.
remedy Check the light quantity and lighting status of
the copy lamp (TC 05-03).
Check the MCU PWB.
16 Content Abnormal laser output
Detail When the laser output is stopped, HSYNC is
detected.
Cause Laser abnormality
MCU PWB abnormality.
Check Check the laser emitting diode operation.
and Replace the MCU PWB.
remedy
F5 02 Content Copy lamp lighting abnormality
Detail The copy lamp does not turn on.
Cause Copy lamp abnormality
Copy lamp harness abnormality
CCD PWB harness abnormality.
Check Use TC 5-3 to check the copy lamp operations.
and When the copy lamp lights up.
remedy Check the harness and the connector between
the CCD unit and the MCU PWB.
When the copy lamp does not light up.
Check the harness and the connector between
the copy lamp unit and the MCU PWB.
Replace the copy lamp unit.
Replace the MCU PWB.
F6 10 Content FAX board trouble
Detail Communication trouble between MCU and FAX
control PWB
Cause FAX control PWB connector disconnection
Defective harness between FAX control PWB
and MCU PWB
Motherboard connector pin breakage
FAX control PWB ROM error/Data error
IC on FAX PWB causes abnormality
Check Check connector/harness of FAX control PWB
and and MCU PWB.
remedy Check the grounding of the copier.
Check FAX control PWB ROM.
Replace the FAX PWB.
Details of trouble
e-STUDIO162/162D/151/151D TEST COMMAND, TROUBLE CODES 10 - 40
Main Sub
code code
H2 00 Content Thermistor open
Detail The thermistor is open.
The fusing unit is not installed.
Cause Thermistor abnormality
Control PWB abnormality
Fusing section connector disconnection
The fusing unit is not installed.
Check Check the harness and the connector between
and the thermistor and the PWB.
remedy Use TC 14 to clear the self diagnostic display.
H3 00 Content Heat roller high temperature detection
Detail The fusing temperature exceeds 240°C.
Cause Thermistor abnormality
Control PWB abnormality
Fusing section connector disconnection.
Check Use TC 5-02 to check the heater lamp blinking
and operation.
remedy When the lamp blinks normally.
Check the thermistor and its harness.
Check the thermistor input circuit on the control
PWB.
When the lamp keeps ON.
Check the power PWB and the lamp control
circuit on the MCU PWB.
Use TC 14 to clear the self diagnostic display.
H4 00 Content Heat roller low temperature detection
Detail The fusing temperature does not reach 185°C
within 27 sec of turning on the power, or the
fusing temperature keeps at 140°C.
Cause Thermistor abnormality
Heater lamp abnormality
Thermostat abnormality
Control PWB abnormality
Check Use TC 5-02 to check the heater lamp blinking
and operation.
remedy When the lamp blinks normally.
Check the thermistor and its harness.
Check the thermistor input circuit on the control
PWB.
When the lamp does not light up.
Check for disconnection of the heater lamp and
the thermostat. Check the interlock switch.
Check the power PWB and the lamp control
circuit on the MCU PWB.
Use TC 14 to clear the self diagnostic display.
Details of trouble