Sharp AR-RB1 Service Manual - Page 8

[4] DESCRIPTION OF OPERATION BPFD 1 2 3 1 2 3 BPOD BIM Paper feed motor 1 BIM/B 2 +24V 3 BIMB 4 BIMA 5 +24V 6 BIM/A BGSOL BTM Upper turnover motor BRM Lower turnover motor BPPD1 Transport of paper detected 1 +24V 2 /BGSOL 1 +5V 2 /BPPD1 3 GND 1 BTM/B 2 +24V 3 BTMB 4 BTMA 5 +24V 6 BTM/A 1 BRM/B 2 +24V 3 BRMB 4 BRMA 5 +24V 6 BRM/A BPRD Presence of paper in reverse section detected Transport of BPPD2 paper detected ADU GND /BPOD +5V GND /BPFD +5V GND /BPRD +5V GND /BPPD2 +5V 987654 654321 CN-H (6pin) CN-G (9pin) CN-F (10pin) CN-A (32pin) BY drive PWB CN-E (3pin) CN-D (6pin) CN-C (8pin) /BPOD /BPPD1 /BPRD /BDD2 BFM BIMA BIMB Vref1 BRM/A BRM/B BPOWD BTMA BTMB +24V +5V GND 12 34 56 78 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 /BPFD /BPPD2 /BDD1 BGSOL BIM/A BIM/B BPOWD2 Vref2 BRMA BRMB BTM/A BTM/B +24V +24V GND /BYSET CN-G (32pin) Desk control PWB [Outline of operation] • The operations include straight delivery, reverse tray delivery, reverse finisher delivery, and ADU delivery (when AR-D19 is installed) operations. [Sensor and solenoid operation] BIM (paper in-motor) changes the transport path of the fed paper when BGSOL (gate solenoid) straight delivery is ON and all other operations are OFF. • In the case of straight delivery, BPOD (paper discharge detect) detects the passing paper. • In the case of reverse tray delivery operation, the paper-in motor and the upper reverse motor operates, the paper is fed, and BPPD1 is detected. Afterward, the upper reverse motor stops, and the paper transport stops. Next, the upper reverse motor rotates in reverse to transport paper to the direction of paper exit tray. After BPOD (paper discharge detect) detects the passing paper, it turns off the upper reverse motor. • In the case of reverse finisher delivery operation, the same as reverse tray delivery operation. • In the case of ADU operation, the lower reverse motor operates, and the paper being transported to the reverse roller is detected by BPRD. After being detected, the lower reverse motor stops, then it rotates in reverse, and the paper is transported to ADU. After BPPD2 detects the passing paper, it turns off the motor. AR-RB1 DESCRIPTION OF OPERATION 4 - 1