Toshiba e-STUDIO4500c Service Manual page 419

April, 2007
SC372 D TD sensor adjustment error 1: K
SC373 D TD sensor adjustment error 2: M
SC374 D TD sensor adjustment error 3: C
SC375 D TD sensor adjustment error 4: Y
During TD sensor initialization
with SP3801, the output value of
the black, magenta, cyan, or
yellow TD sensor is not within
the range of 3.2 0.2V
1. Turn the machine OFF and ON.
2. Pull ouut the film seal from the black, magenta, cyan, or yellow PCU.
3. Do SP3812 001 to confirm that the developer was initialized correctly. The
4. Check the TD sensor connector.
5. Check the TD sensor connector and harness between the TD sensor and
6. Check the drawer PCU connector.
7. Replace the TD sensor.
8. After replacing the TD sensor:
SC396 D Drum motor error 1: K
SC397 D Drum motor error 2: M
SC398 D Drum motor error 3: C
SC399 D Drum motor error 4: Y
When the drum motor of the black,
magenta, cyan, or yellow PCU
starts, the machine cannot detect a
LOCK signal within 2 sec. The
motor is trying to rotate but there is
an excessive load on the drum
shaft. The motor has no traction
(due to a bent cleaning blade, for
example).
display should show "1111" if developer initialized correctly.
PCU for damage. Replace it if necessary.
Do SP3801 003-006 to initialize the new black, magenta, cyan, or yellow
TD sensor.
Execute SP3820 001 to do auto process control manually.
SERVICE CALL CONDITIONS
Film seal not removed from a new
developer pack
TD harness sensor disconnected, loose
or defective
TD sensor defective
Harness between TD sensor and drawer
disconnected, defective
PCU drum dirty
PCU defective
Motor harness defective
DRB (Drive board) defective
Drum motor defective
Insufficient lubrication on a drum.
Open PCU and apply toner to the
drum surface
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