Gestetner G060 Service Manual page 500

SC TABLE
SC No. Item
SC 285 Line position
adjustment
(MUSIC) error
SC 370 TD sensor [K]:
Adjustment error
SC 371 TD sensor [Y]:
Adjustment error
SC 372 TD sensor [C]:
Adjustment error
SC 373 TD sensor [M] :
Adjustment error
SC 374 Vt error [K]
SC 375 Vt error [Y]
SC 376 Vt error [C]
SC 377 Vt error [M]
G570
Definition
• Pattern sampling
Line position adjustment
fails three consecutive
times.
• Inconsistency in the
• Poor connection (TD
During the developer
initialization, the output
value of the TD sensor is
• Defective TD sensor
without the adjustment
range (3.0 ± 0.1V).
• Poor connection (TD
During the image
development, Vt value is
less than 0.5V.
• Defective TD sensor
Related
Possible Cause
SCs
error due to
insufficient image
density of patterns
used for the
adjustment
sampling line position
adjustment pattern
due to dust on the
pattern, damage to
the OPC drum,
damage or toner
dropped on the
transfer belt, or a dirty
or defective ID sensor
sensor outputs is less
than 0.5V.)
sensor outputs is less
than 0.5V.)
4-18
Troubleshooting Procedure
1. Turn the main switch off and on.
2. Check and fix the problem that
causes low image density. .
3. Clean or replace the transfer belt
and/or the ID sensor.
4. Replace the PCU or clean the
development unit that causes toner to
drop on the transfer belt.
1. Turn the main switch off and on.
2. Reset the related color development
unit.
3. Replace the related color
development unit.
1. Turn the main switch off and on.
2. Reset the related color development
unit.
3. Replace the related color
development unit.
Type
B
B
B
SM