HP LaserJet M9040/M9050 Service Manual - Page 125
Basic block diagram,
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The three fans are for the ADF, the flatbed, and the power supply: ● The ADF fan assembly includes a fan housing. The ADF fan is an intake fan. NOTE: The ADF fan can be ordered separately or with its plastic housing. ● The flatbed fan assembly includes a filter. The flatbed fan is an intake fan. NOTE: The flatbed fan assembly filter needs to be replaced only when replacing the flatbed fan. ● The power supply fan is an exhaust fan. Figure 5-6 Motors and fans 2 1 3 4 5 6 Table 5-5 Motors and fans Number Part 1 Flatbed fan assembly 2 ADF fan 2 ADF fan assembly (includes cable and shroud) 3 Delivery motor (24 vdc) 4 Pickup motor (24 vdc) 5 Power supply assembly (fan (callout 5) included) 6 Flatbed motor (24 vdc) Part number RG5-6318-000CN RH7-1486-020CN RG5-6312-030CN RH7-1487-020CN RH7-1488-030CN RG1-4153-000CN RH7-1485-000CN Basic block diagram The formatter sends a scan command to the copy processor after it receives a scan command from the control panel by way of the DC controller. The copy processor then sends a scan command to the scanner controller board. The scanner controller board generates the image data and sends the image data back to the copy processor which, in turn, passes the image to the formatter. Depending on the ENWW Basic operation 107
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