CANON PC940
Service Manual

CHAPTER 4 SELF DIAGNOSIS

Caution: 1. If the self-diagnosis has turned on, turn off the power switch to reset the machine. In the case of �E000�, �E001�, �E002�, or �E003�, however, the machine must be reset as follows: this consideration is to prevent feeding power to the fixing heater otherwise occurring if the thermistor has an open circuit: 2. In the case of �E0�, �E000�, �E001�, �E002�, �E003�, or �E220�, the machine will turn off in 1.5 sec for �E0� and �E000� through �E003� and in 2 sec for �E220�. 3. In the case of �E0�, �E000�, �E001�, �E002�, or �E003�, perform the following steps: 1) Turn off the power switch, and short circuit JP101 and JP102 on the DC controller PCB with a screwdriver or the like.

JP102

JP102

JP101

JP101

Figure 4-1 2) While keeping the condition in step 1), turn on the power switch. 3) Stop short-circuiting JP101 and JP102.

4-3