Chapter 7 Service Mode - Canon NP6621 Service Handbook

SERVICE MODE
D. I/O Mode ('2')
• To start I/O display mode, press '2' (numeric keypad) and then the AE key.
• To select an item, press the appropriate number on the numeric keypad and then the Start key.
• To deselect an item, press the Clear key.
• A press on the Start key while a description of the selected service mode is indicated will execute
appropriate copying operations.
No.
206 Fixing main thermistor (TH1)
voltage display
207 Fixing sub thermistor (TH2) voltage
display
208 AE sensor voltage display
210 Multifeeder paper width sensor
voltage display
211 Light adjustment sensor voltage
display
212 Copy density correction knob
213 Toner Sensor
214 Port C digit 1 display
215 Port C digit 2 display
216 Port C digit 3 display
217 Port C digit 4 display
218 Port C digit 5 display
219 Port C digit 6 display
220 Port C digit 7 display
221 Port C digit 8 display
222
Port C digit P0 display
7–6
Item
Table 7-708
Description
Indicates the detected voltage in '0' through '255'.
Indicates the detected voltage in '0' through '255'.
Indicates the detected voltage in '0' through '255'.
Indicates the detected voltage in '0' through '255'.
Indicates the detected voltage in '0' through '255'.
Indicates the detected voltage in '0' through '255'.
Indicates the detected voltage in '0' through '255'.
Starting the mode causes part of the copy count indica-
tor to turn ON, representing the I/O state of the input
port.
Starting the mode causes part of the copy count indica-
tor to turn ON, representing the I/O state of the input
port.
Starting the mode causes part of the copy count indica-
tor to turn ON, representing the I/O state of the input
port.
Starting the mode causes part of the copy count indica-
tor to turn ON, representing the I/O state of the input
port.
Starting the mode causes part of the copy count indica-
tor to turn ON, representing the I/O state of the input
port.
Starting the mode causes part of the copy count indica-
tor to turn ON, representing the I/O state of the input
port.
Starting the mode causes part of the copy count indica-
tor to turn ON, representing the I/O state of the input
port.
Starting the mode causes part of the copy count indica-
tor to turn ON, representing the I/O state of the input
port.
Starting the mode causes part of the copy count indica-
tor to turn ON, representing the I/O state of the input
port.