Toshiba e-STUDIO6520C Service Handbook page 498

(8) Perform "Automatic initialization of image quality control (05-396)" and make sure it is completed
normally. (Error [CE40] does not appear.) Then perform "Automatic gamma adjustment".
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(9) Clear all "Image quality control abnormal detection counter Y to K display/0 clearing (08-573 to
576)".
(10) Check if any of the springs for supplying power to the transfer belt unit is deformed. Replace the
spring if it is deformed.
[CE41] Image quality TRC control test pattern abnormality
Notes:
1. Steps 1 and 2 are usable only for models to which T430SY0*115, T430HD0*115 or a later
version is applied.
2. Note that steps 1 and 2 have different subcodes to be entered.
(1) Check each value of the subcodes 2 (Y), 5 (M), 8 (C) and 11 (K) of the code 05-2803.
* If all the values of Y, M, C and K are 628 or less, proceed to step 2. If any of them is over 628,
follow the procedure below.
(High density pattern abnormality)
Set both values of the codes 08-2600 and 08-8103 to 0.
(1)-1
(1)-2
Print the test chart 04-270 with A3/LD for more than 2 pages. Then perform list printing
([9]+[START]) to check if no abnormality is found in the image density.
If any abnormality is found, correct it referring to "25.5 Troubleshooting for the
Image"
.Check if the process unit (EPU tray) and the developer unit are installed
(1)-3
properly.
Check if any toner or developer material is spilt around the laser shutter. Clean
(1)-4
if so.
(1)-5
Check the center position adjustment for each drawer is within the range preset at the
shipment (rear side: 0-3 mm).
P.3-92 "[B] Adjustment of the gear holder"
(1)-6
Adjust the image dimension with A3/LD.
P.3-16 "[A] Reproduction ratio of primary scanning direction (Image clock fine adjustment
(Printer))"
P.3-17 "[B] Primary scanning data laser writing start position (Laser writing start position
(Printer))"
Return both values of the codes 08-2600 and 08-8103 to 1. Then proceed to
(1)-7
step 3. If it is the second time, proceed to step 4.
(2) Check each value of the subcodes 0 (Y), 3 (M), 6 (C) and 9 (K) of the code 05-2800.
* If all the values of Y, M, C and K are 180 or over, proceed to step 3. If any of them is less than
180, follow the procedure below.
(Low density pattern abnormality)
Set both values of the codes 08-2600 and 08-8103 to 0.
(2)-1
(2)-2
Print the test chart 04-270 with A3/LD for more than 2 pages. Then perform list printing
([9]+[START]) to check that no abnormality is found in the image density.
If any abnormality is found, correct it referring to
for the Image" "
Return both values of the codes 08-2600 and 08-8103 to 1. Then proceed to
(2)-3
step 3. If it is the second time, proceed to step 4.
e-STUDIO5520C/6520C/6530C
ERROR CODE and TROUBLESHOOTING
| When an error occurs:
Check and correct it accordingly.
6 - 116
Service Manual "6.4 Troubleshooting
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