Lexmark 3200 - MFP - Option, Service Manual

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4.5 PCBA Voltage Test
This chapter describes how to check parts for proper voltage levels.
4.5.1 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 J9 connector on right side of the main control PCBA.
The specified voltage level for each pin of J9 is as follows:
Pin #14: +24VDC
Pin #13: 24VGND
Pin #4: +5VDC
Pin #3: GND
4.5.2 Main control PCBA input power (+5V) failure check
Refer to the procedure above. (subsection 4.6.1)
4.5.3 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 #2: Yellow LED
Pin #1: Green LED