OF5750/5950 Series January 2001 5 - 25.2.1 Confirmation ItemsThe clock frequency and power voltage of the machine are not possible to adjust in the field.However, their measurement procedures are described here for confirmation of clock fre-quency and each voltage.1) Clock Frequency• Measurement point: R76 board; R180-2 pin and ground terminal• Specification: 20.000 MHz ± 50 PPMNote: If the counter does not read with 20.000 MHz, replace with a new crystal oscillator(X1).2) +5V DC Voltage (SUB)• Measurement point: R76 board; CN1-A8 pin and ground terminal• Specification: +5.2V ± 4%3) +5V DC Voltage• Measurement point: R76 board; CN1-B10, A11, B11 and A12 pin and ground terminal• Specification: +5.1V ± 4%4) +8V DC Voltage• Measurement point: R76 board CN1-A16 pin and ground terminal• Specification: +8V ±4%5) –8V DC Voltage• Measurement point: R76 board; CN1-B15 pin and ground terminal• Specification: –8V ±4%6) +24V DC Voltage• Measurement point: R76 board; CN1-B6 pin and ground terminal• Specification: 22V to 27V7) +38V DC Voltage• Measurement point: R76 board; CN1-B12, A13 and B13 pin and ground terminal• Specification: +26V to +45V8) Contact Image Sensor Output (SIG signal)• Measurement point: R76 board; CN13-1 pin and ground terminal• Specification: A waveform sample is shown below.• Test chart: White sheet (A4 size)1.0Vp-p2.5ms
