HP Color 9850mfp Service Manual - Page 508

Q3224A 2 UNIT EXPLANATION 1. Operation The press operation is performed only in the trim mode (booklet is cut); it is not performed in the through mode (booklet is not cut). (2) Through mode When M101(conveyance) turns ON, the M104 turns ON to release the stopper, allowing the booklet to be conveyed through. a. Stopper movement The stopper moves to the standby position specified for each paper size during the initial process performed at the beginning of stapling and folding copy operation by finisher. In the trim mode, when the specified time lapsed after the PS101 (entrance) is turned ON by detecting the leading edge (folding edge) of the conveyed booklet, the M103 (stopper) turns ON again and the stopper takes fine adjustment movement. (to adjust it to the number of booklet sheets in order to trim the booklet exact regardless of the number of sheets.) Then, the folding edge of the conveyed booklet is pressed against the stopper to position the booklet at the trimming position. For wide paper and the through mode, stopper's fine adjustment movement is not taken. b. Booklet press When the PS102(conveyance) detects the leading edge (folding edge) of the conveyed booklet, conveyance stops after lapse of the specified time and at the same time the M105(press) turns ON to pressurize the booklet. The booklet is pressurized for the specified period of time to complete trimming. The stopper returns to the stand by position determined for the size of booklet c. Press release When trimming is complete, the M105 turns ON again to release the booklet press . At the same time the M104 (stopper release) turns ON to release the stopper. Upon detection of the home position by PS105(press HP), the M105 turns OFF to enter the standby state. d. Stopper release (1) Trim mode After completion of trimming, the M104 is ON unit PS104(stopper release HP) is turned OFF to release the stopper, allowing the booklet to be ejected. e. Stopper setting When the PS108 (exit) detects the trailing edge (trim edge) of the booklet conveyed for ejection, the M104 turns ON again. Then, the M104 turns OFF when the PS104 (stopper release HP) turns ON, thus the stopper stands upright. f. Stopper movement to home position When the last booklet ejection process is completed in the stacker section, the M103 turns ON again to move the stopper to the home position. When the home position is detected by the PS103 (stopper HP), the M103 turns OFF. 2. Signals a. Input signals (1) PS101_SIG (PS101 to TUDB to finisher) This signal is used to detect a conveyed booklet at the entrance of the conveyance section. [L]: Booklet exists. [H]: Booklet does not exists (2) PS103_SIG (PS103 to TUDB to Q3220A) This signal is used to detect the lateral home position of the stopper. [L]: Home position [H]: Other than home position (3) PS104_SIG (PS104 to TUDB to finisher) This signal is used to detect the posture of the stopper. [L]: Upright [H]: Release (4) PS105_SIG (PS105 to TUDB to finisher) This signal is used to detect the home position of the press plate. [L]: Home position [H]: Other than home position (5) DRV (TUDB to M105) M105 drive signal [L]: M105 ON [H]: M105 OFF (6) M103_A, A (Finisher to TUDB) This signal is used to control the A-phase of the M103. (7) M103_B, B (Finisher to TUDB) This signal is used to control the B-phase of the M103. 2 - 6