45
x Platemaking / Master Feed / Ejection Section
chap.2
R8S02028
(4) Drum Master Sensor
Reflection light amount
The larger the reflection light amount is, the
smaller the output voltage is. The smaller the light
amount is, the larger the output voltage is.
The value is checked with the HELP - 005.
Description
The drum master sensor is located at a fixed
distance relative to the drum. By means of reflected
light, this sensor senses master setting errors.
When a master setting error occurs, "MASTER SET
ERROR" is displayed.
While the master is not set to the drum, printing
will not start even if the (PRINT) key is
pressed. Instead, “CANNOT PRINT” is displayed.
Circuit
HELP-005 \ see p.209
Sensitivity adjustment of the master detect sensor
Make adjustment in HELP-005 so that:
Sensitivity is 15 or less when the master is
present on the drum surface,
Sensitivity is 15 or more when the master is not
present on the drum surface.
Drum master sensor
R8S02E10e
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