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Lexmark Internal Use Only
4-26
4.5 PCBA Voltage Test
This chapter describes how to check parts for proper voltage levels.
4.5.1
4.5.1
4.5.1
4.5.1
Check power supply output voltage
Check power supply output voltage
Check power supply output voltage
Check power supply output voltage
Tool: DMM (Digital Multi Meter)
Procedure:
1.
Loosen the screws on the main PCBA cover. Remove the metallic plate underneath the PCBA, but keep
each cable connected.
2.
Turn on the scanner.
3.
Check the voltage level of each pin of J10 connector on right side of the main control PCBA. The
specified voltage level for each pin of J10 is as follows:
Pin #14: +24VDC
Pin #13: 24VGND
Pin #4: +5VDC
Pin #3: GND
4.5.2
4.5.2
4.5.2
4.5.2
Main control PCBA input power (+5V) failure check
Main control PCBA input power (+5V) failure check
Main control PCBA input power (+5V) failure check
Main control PCBA input power (+5V) failure check
Refer to the procedure above. (subsection 4.6.1)
4.5.3
4.5.3
4.5.3
4.5.3
LED display PCBA check
LED display PCBA check
LED display PCBA check
LED display PCBA check
Tool: DMM (Digital Multi Meter)
Notice:
1.
There is a 15-pin connector connects to the ADF motor board where there are three pins connected to
the LED board as follows:
Pin #14: 24VDC
Pin #15: 24VGND
Pin #5: Yellow LED
Pin #6: Green LED
Pin#7: Red LED
Содержание OptraImage 443
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