HP 5000n manual Power Supply System, AC/DC Power Distribution

Power Supply System

AC/DC Power Distribution

The AC line voltage for the printer is applied through the main switch (SW101) and supplied to the low-voltage power supply circuit through the fuse (FU1). The low-voltage power supply divides the AC voltage to +24 VDC, +5 VDC and +3.4 VDC and supplies them to the DC controller PCA. This circuit generates a zero-cross signal (ZEROX) and supplies it to the DC controller PCA.

+3.4 VDC is supplied to ICs on the DC controller PCA and the BD PCA. +5 VDC is supplied to the laser driver PCA and sensors.

+24 VDC is supplied to the high-voltage power supply PCA to drive the main motor, the exhaust fan, the scanner motor, the clutches, and the solenoids.

+24 VDC is divided into +24 Vdr, which stops when the top cover is opened and SW401 on the terminal PCA turns off, and _24V, which is always supplied regardless of whether SW401 turns on or off.

EN Power Supply System 5-3