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THEORY OF OPERATION
3-2. Paper Transportation
[1]
MBF Sensor (MBF: Multi-sheet Bypass Feed):
Detects the presence of sheets of paper in the multi-purpose tray (front tray assembly) according to change in the
position of MBF actuator. It assumes ON state when the presence of the paper is being detected.
[2]
Pick up Solenoid:
Controls operations (rotation and stop) of the pick up roll assembly.
[3]
Pick up Roll Assembly:
Activation of the pick up solenoid causes the spring clutch of the pick up roll assembly to be fixed and rotate due to
the drive from the drive assembly, causing the cam of the pick up roll assembly to operate the bottom plate assembly
vertically, thus the pick up roll of the pick up roll assembly delivering sheets of paper from the multi-purpose tray
(front tray assembly).
One full rotation of the pick up roll assembly causes the spring clutch to be released, thus disabling the drive from
the drive assembly from being transmitted.
A pinch roll corresponding to the take away roll of the take away roll assembly is also mounted.
[4]
Inlet Chute Assembly:
Comprises an inlet chute and a regi. sensor.
•
Inlet Chute:
Not only serves as a paper path but moves the electrical charge of pretransfer sheets of paper to the earth by a
metallic plate, improving transfer efficiency.
•
Regi. Sensor (Regi.: Registration):
Detects the state of paper transportation in the inlet chute area. It assumes ON state when the presence of the paper
is being detected.
[5]
BTR Assembly (BTR: Bias Transfer Roll):
The BTR, a component, comes into contact with the EPX toner cartridge drum, impresses the positive electrical
charge from the back of sheets of paper, thus transferring toner on the drum surface on them.
[6]
Trans. Chute Assembly (Trans.: Transport):
It not only serves as a paper transport path but moves to the earth the electrical charge of post-transfer sheets of paper
and that from the BTR by means of the eliminator.
[7]
Console Assembly:
Performs various display by means of the LCD and various inputs with the key switch.
[8]
Lower Chute Assembly:
Comprises a take away roll assembly and a retard pad assembly.
•
Take Away Roll Assembly:
Transports sheets of paper to the drum by the take away roll of the take away roll assembly.
•
Retard Pad Assembly:
Prevents duplicate paper transportation during paper delivery by the pick up roll assembly.
[9]
Link Assembly:
Not only regulates the opening of the front cover assembly but depresses the interlock switch of the LVPS assembly
when the front cover assembly is closed, opening the drum shutter of the EPX toner cartridge.
Содержание LS-5 SERIES
Страница 1: ...LASER PRINTER LS 5 SERIES TECHNICAL MANUAL SECOND EDITION ...
Страница 4: ... 2 GENERAL SPECIFICATIONS ...
Страница 6: ... 2 GENERAL SPECIFICATIONS ...
Страница 14: ... 10 THEORY OF OPERATION ...
Страница 20: ... 16 THEORY OF OPERATION Figure 2 5 Cassette Feed ...
Страница 22: ... 18 THEORY OF OPERATION Figure 2 6 Paper Transportation ...
Страница 25: ... 21 THEORY OF OPERATION Figure 2 8 Drive Figure 2 9 ROS Assy Figure 2 10 EPX Toner Cartridge ...
Страница 28: ...REPLACEMENT AND ADJUSTMENTS OF PARTS 24 ...
Страница 56: ... 52 MAINTENANCE GUIDE ...
Страница 84: ... 80 TROUBLESHOOTING ...
Страница 136: ... 2 GENERAL SPECIFICATIONS ...
Страница 140: ... 136 2 Cassette Feed 2 1 Disassembly Drawing ...
Страница 142: ... 138 3 Paper Transportation 3 1 Disassembly Drawing ...
Страница 144: ... 140 4 Fusing Paper Exit 4 1 Disassembly Drawing ...
Страница 146: ... 142 5 Drive Photographics 5 1 Disassembly Drawing ...
Страница 148: ... 144 6 Electrical 6 1 Disassembly Drawing ...
Страница 151: ... 147 7 Optional Feeder Unit 250 7 1 Disassembly Drawing ...
Страница 153: ... 149 8 Optional Feeder Unit 500 8 1 Disassembly Drawing ...
Страница 158: ... 154 10 Main Logic Board LS 5EX TT 10 1 Circuit Diagram Title BLOCK DIAGRAM ...
Страница 159: ... 155 Main Logic Board LS 5EX TT 1 10 Title CPU BLOCK 1 ...
Страница 160: ... 156 Main Logic Board LS 5EX TT 2 10 Title G A BLOCK 2 ...
Страница 161: ... 157 Main Logic Board LS 5EX TT 3 10 Title RAM BLOCK 3 ...
Страница 162: ... 158 Main Logic Board LS 5EX TT 4 10 4Title ROM BLOCK ...
Страница 163: ... 159 Main Logic Board LS 5EX TT 5 10 Title ENGINE I F BLOCK 5 ...
Страница 164: ... 160 Main Logic Board LS 5EX TT 6 10 6Title FONT CART CN BLOCK ...
Страница 165: ... 161 Main Logic Board LS 5EX TT 7 10 Title CENT I F BLOCK 7 ...
Страница 166: ... 162 Main Logic Board LS 5EX TT 8 10 Title SERIAL I F BLOCK 8 ...
Страница 167: ... 163 Main Logic Board LS 5EX TT 9 10 9Title EXROM BLOCK ...
Страница 168: ... 164 Main Logic Board LS 5EX TT 10 10 10 Title POWER BLOCK ...
Страница 169: ... 165 10 2 Component Layout Parts Side ...
Страница 170: ... 166 10 2 Component Layout Solder Side ...
Страница 174: ... 170 11 Main Logic Board LS 5 11 1 Circuit Diagram Title BLOCK DIAGRAM ...
Страница 175: ... 171 Main Logic Board LS 5 1 7 Title CPU BLOCK 1 ...
Страница 176: ... 172 Main Logic Board LS 5 2 7 Title G A BLOCK 2 ...
Страница 177: ... 173 Main Logic Board LS 5 3 7 Title RAM BLOCK 3 ...
Страница 178: ... 174 Main Logic Board LS 5 4 7 4Title ROM BLOCK ...
Страница 179: ... 175 Main Logic Board LS 5 5 7 Title CARTRIDGE BLOCK 5 ...
Страница 180: ... 176 Main Logic Board LS 5 6 7 6Title PARALLEL SERIAL IF BLOCK ...
Страница 181: ... 177 Main Logic Board LS 5 7 7 Title PANEL EET ENGINE IF BLOCK 7 ...
Страница 182: ... 178 11 2 Component Layout Parts Side ...
Страница 183: ... 179 11 2 Component Layout Solder Side ...
Страница 186: ... 182 12 ROM Board MS 12 1 Circuit Diagram Title BLOCK DIAGRAM ...
Страница 187: ... 183 ROM Board MS 1 2 Title CONNECTOR DECODE BLOCK 1 ...
Страница 188: ... 184 ROM Board MS 2 2 Title ROM BLOCK 2 ...
Страница 189: ... 185 12 2 Component Layout Parts side Solder side ...
Страница 191: ... 187 13 RAM Board 13 1 Circuit Diagram Title RAM BOARD ...
Страница 192: ... 188 13 2 Component Layout Parts side ...
Страница 194: ... 190 14 RAM Module 1MB 14 1 Circuit Diagram ...
Страница 196: ... 192 15 RAM Module 2MB 15 1 Circuit Diagram ...
Страница 198: ... 194 16 Font Cartridge 16 1 Circuit Diagram ...
Страница 199: ... 195 16 2 Component Layout Parts side ...
Страница 203: ... 2 GENERAL SPECIFICATIONS ...