Canon NP-70 Service Manual page 187

NP•70
4-85
4.13 HEATER ASSEMBLY
4.13-1
OUTLINE OF ASSEMBLY OPERATION
The Heater Assembly is located in the upper portion of the Copy Conveying Assembly and is
used to dry the copy paper before exiting the machine.
The number of nichrome wire elements and their type of connection will depend on the input
AC voltage of the model of NP-70 being used. Table 4-5 indicates these differences.
Line
Voltage
Heater
Designation
Configuration
Circuit Diagram
100V H1, H2, & H3
parallel
H1 - "ON"
continuously
H2 & H3 controlled
by H. C. Ckt.
r----
-- ~r - --~
~ I
©
i ~
; ~ H. C.
~ ckt. I
220V
240V
H1 & H2
Series
H1 & H2 controlled
by H. C. Ckt.
,
©
I i
II ~ i
~ I H. C.
I
ckt.
~_
_ L___J
It should be noted that the heater operation is controlled so that the outer plate of the
heater (heat dispersion plate) is maintained at 180 ± 3°C.
© CANON INC.
Second Printing-June, 1974