Canon NP-70 Service Manual page 43

NP•70
3-1
3.1 CIRCUIT DIAGRAM GRAPHIC SYMBOLS
Knowledge of the graphic symbols used for electric parts is essential to understand the wiring and
schematic diagrams in the NP-70 manual.
No. Symbol Description
Function
1
P
Plug &Power Cord Provides AC voltage to the copier
2 ~/~ SW
ON/OFF Switch Input Power ON/OFF Switch
3
NC
MS lA Microswitch Copyboard Start
MS2A Microswitch Jam Detection (SL7 Enable)
MS3A
Microswitch Jam Detection (Jam Ckt. Enable)
NO
~•
• MS4 Microswitch
Drum Stop Position
MSS Microswitch
Copyboard Release Lock and
Toner Replenishment
MS6A Microswitch Breaks Motor, High-Voltage
Transformer, &Overall Exposure
Circuit due to Jam
MS6B Microswitch Breaks Heater Circuit due to Jam
MS7 Microswitch
Copy Start (by pushing Copy
Button)
MS8 Microswitch Copyboard Stop Position
MS9 Microswitch Copyboard Reversal Position when
paper is "Full Size"
©.CANON INC.
Second Printing-June, 1974