HP Color 9850mfp Service Manual - Page 449
When SD201/SD202 sheet feed/U/L and, PS205/PS210 Tray lower limit/U/L, PS212
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Post insertion unit explanation M201/M202 (tray up/down/U/L) raises the up/down plate/U/L. When SD201/SD202 (sheet feed/U/L) and MC201/MC202 (conveyance/U/L) comes on, the drive of M203 (PI conveyance) is transmitted and the sheets are fed one by one by pick, feed, and separation rollers. MC203 (registration) controls the drive force transmitted to the conveyance rollers /U/L, which forms a loop for the fed sheet. The related signals are: PS201/PS206 (PI passage U/L), PS202/PS207 (No sheet/U/L), PS203/PS208 (Sheet setting/U/L), PS204/PS209 (Tray upper limit/U/L), PS205/PS210 (Tray lower limit/U/L), PS212 (Sheet size/L), and VR201/VR202 (Sheet size/U/L). 1 Operation a Automatic sheet feeding (online) 1 When the MFP's START button turns on, M201/M202 (tray up/down/U/L) are driven in forward, which lifts the up/down plate/U/L until PS204/PS209 (tray upper limit/U/L) are activated. 2 Concurrently, while M203 (PI conveyance) is driven at low speed, SD201/SD202 (sheet feed/U/L) and MC201/MC202 (conveyance/U/L) comes on and sheets are fed into the finisher stacker. 3 When the last sheet on the up/down plate/U/L is fed and PS203/PS208 (sheet setting/U/L) comes off, the no-sheet-signal is sent to the MFP, causing the first feed of MFP to stop. After that, when PS202/PS207 (no sheet/U/L) comes off, M201/M202 (tray up/down/U/L) are driven in reverse, which lowers the up/down plate/U/L until PS205/PS210 (tray lower limit/U/L) are activated. MC201 (conveyance/U) M203 (PI conveyance) M201 (tray up/down/U) MC202 (Conveyance/L) PS210 (tray lower limit/L) PS205 (tray lower limit/U) PS202 (no sheet/U) PS204 (tray upper limit/U) M202 (tray up/ down/L) Up/down plate/U/L SD202 (sheet feed/L) PS207 SD201 (no sheet/L) (sheet feed/U) PS208 PS209 (tray upper limit/L) (sheet setting/L) PS203 (sheet setting/U) b Manual sheet feeding (offline) Only the lower tray is allowed. 1 When the PI control panel's START button turns on, M202 (tray up/down/L) is driven in forward, which lifts the up/down plate/L until PS209 (tray upper limit/L) is activated. 2 Concurrently, while M203 (PI conveyance) is driven at low speed, SD202 (sheet feed/L) and MC202 (conveyance/L) comes on and all sheets set in the up/down plate/L fed into the finisher stacker. 3 The finisher carries out the required finishing processes (stapling, tri-folding, etc.). 4 PS207 (no sheet/L) comes off, M202 (tray up/down/L) is driven in reverse, which lowers the sheet tray until PS210 (tray lower limit/L) is activated. ENWW Paper feed unit 11