Canon GP215 Service Manual page 173

2. Controlling the Temperature of the Fixing Heater
The fixing heater is turned OFF during standby. To prevent fixing faults caused by low temperature,
either of the following five types of temperature control is executed depending on the temperature of the
fixing heater (output of the main thermistor TH1) at power-on and the count of copies to be made.
a. If the temperature at copy start is less than 100°C, either of further five types of control is chosen
depending on the count of copies: q 235° to 190°C, w 225° to 180°C, e 215° to 180°C, r 250° to
180°, and t 195° to 180°C. Normally, one of w through r is sleeted.
Control q
1st to 4th copy
5th to 6th copy
7th to 20th copy
21st to 30th copy
31st to 40th copy
41st to 50th copy
51st to 100th copy
Control w
1st to 4th copy
5th to 6th copy
7th to 20th copy
31st to 40th copy
41st to 50th copy
51st to 100th copy
Control e
1st to 20th copy
21st to 30th copy
31st to 40th copy
41st to 50th copy
51st to 100th copy
Control panel
power switch ON
STBY
Fixing heater (H4)
Main motor (M1)
235˚C
230˚C
225˚C
215˚C
210˚C
205˚C
140˚C
100˚C
COPYRIGHT © 1996 CANON INC.
235°C
230°C
225°C
215°C
210°C
200°C
190°C
225°C
220°C
215°C
210°C
190°C
180°C
215°C
210°C
200°C
190°C
180°C
Copy Start key ON
Continuous copying
1st to 4th copy
5th to 6th copy
7th to 20th copy
21st to 30th copy
31st to 40th copy
Figure 3-640
CANON GP215/200 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
Copy Start key ON
Continuous copying
STBY
1st to 5th copy
6th to 10th copy
11st to 15th copy
3. OPERATIONS AND TIMING
3–119