MEASUREMENT
1ǃVoltagecheck
Measuring point Voltage Description
11VļGND 11.0Vf5% AC plug should be connected
5VļGND 5.0Vf5% AC plugshould be connected
Note: Measurement with no load is possible.
2ǃMotor operationcheck (PCN8.1~4)
Apply the voltages shown belowto the terminals of the harness connected to connector PCN8 on the 2000UL PCB ass’y to make sure
that the motorruns properly.
Applied voltage
Motor Operation Pin 1(orange) Pin 2(green) Pin3(red) Pin 4(green)
LF Motor(A motor) Pulling 4~9V GND ----- -----
LF Motor(A motor) Ejection GND 4~9V ----- -----
CR Motor(B motor) Changingred and black
ribbons.(Continuous) ----- ----- 4~9V GND
CR Motor(B motor) Head feed ----- ----- GND 4~9V
3ǃHead resistance measurement (PCN7.1~12)
Measure the head resistanceat the terminals of the harness connected to connector PCN7 on the 2000UL PCB ass’y.
Measuring point(PINNO. of PCN7) Resistances
1ė8
2ė8
3ė8
4ė8
5ė8
6ė8
7ė8
9ė8
10ė8
11ė8
12ė8
Open
3.0f¡
3.0f¡
3.0f¡
3.0f¡
3.0f¡
Short
3.0f¡
3.0f¡
3.0f¡
3.0f¡
Note˖Ifthe head resistance is less then the values shown aboveˈthehead pin drive circuit may also be defectiveDŽReplace the head and
repair the 2000UL PCB ass’y.
4ǃSensorscircuit
There are five sensorsDŽtheirfunctions are show below:
Name CPU port Functions
E-03 R80 Detectsthe right-up edge of an inserted time card.
E-05 R81 Detectsthe left-up edge of an inserted time card.
E-37 D1 Detects the operating condition of the LF motor.
E-38 D0 Detects the operating condition of the CR motor.
E-30 R73 Checkwhether the head is at the home position(left end of the machine).