Chapter 7
7-29
7.5.1.2 Detecting the Presence/Absence of the Drum Unit
0014-0778
/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
The machine uses its DC controller to detect the presence/absence of a drum cartridge with reference to the primary charging AC bias detection signal (ANO_1).
The machine executes the detection when the power is turned on or when the front cover is closed, causing the DC controller to check the level of current of ANO_1
for individual drum unit.
If the result of detection indicates a level of the ANO_1 signal above a specific value, the DC controller will assume the absence of the unit in question, and at the
same time, notifies 'the absence of drum unit' on the touch panel.
F-7-38
[1] Primary charging roller
[2] Drum unit
7.5.1.3 Identifying a New/Old Drum Unit
0014-0781
/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
This device does not have memory in the drum unit so, when a new drum is mounted, the drum life counter value stored in the printed needs to be reset.
The device detects old and new drum units, so that the counter can be reset.
The detection is performed by the DC controller CPU monitoring the fuse detection signal.
When the CPU detects that a new drum unit has been mounted, it outputs a fusing signal and blows the fuse on the drum unit. At the same time, the drum life
counter resets to 0.
F-7-39
The following shows the timing at which the machine executes the detection and the flow of detection:
1. Timing of Detection
at power-on, after the front cover is opened/closed
2. Flow of Operation
Y
M
C
BK
D-CON
HVT1
[1]
[2]
ANO_1
ANO_1
PRI_A
C
PRI_A
C
D-CON
CPU
EEPROM
Summary of Contents for iR C3380 series
Page 1: ...Aug 29 2006 Service Manual iR C3380 2880 Series...
Page 2: ......
Page 6: ......
Page 23: ...Chapter 1 Introduction...
Page 24: ......
Page 26: ......
Page 52: ......
Page 53: ...Chapter 2 Installation...
Page 54: ......
Page 127: ...Chapter 3 Basic Operation...
Page 128: ......
Page 130: ......
Page 136: ......
Page 137: ...Chapter 4 Main Controller...
Page 138: ......
Page 160: ......
Page 161: ...Chapter 5 Original Exposure System...
Page 162: ......
Page 188: ...Chapter 5 5 24 F 5 68 4 Remove the original sensor 2 hook 1 F 5 69...
Page 189: ...Chapter 6 Laser Exposure...
Page 190: ......
Page 192: ......
Page 206: ......
Page 207: ...Chapter 7 Image Formation...
Page 208: ......
Page 256: ......
Page 257: ...Chapter 8 Pickup Feeding System...
Page 258: ......
Page 262: ......
Page 303: ...Chapter 9 Fixing System...
Page 304: ......
Page 306: ......
Page 321: ...Chapter 10 Externals and Controls...
Page 322: ......
Page 326: ......
Page 336: ...Chapter 10 10 10 F 10 10 2 Remove the check mark from SNMP Status Enabled...
Page 337: ...Chapter 10 10 11 F 10 11...
Page 359: ...Chapter 11 MEAP...
Page 360: ......
Page 362: ......
Page 401: ...Chapter 12 RDS...
Page 402: ......
Page 404: ......
Page 411: ...Chapter 13 Maintenance and Inspection...
Page 412: ......
Page 414: ......
Page 416: ...Chapter 13 13 2 F 13 1 8 9 1 2 3 3 5 6 7 10 11 12 13 14 4...
Page 421: ...Chapter 14 Standards and Adjustments...
Page 422: ......
Page 424: ......
Page 431: ...Chapter 15 Correcting Faulty Images...
Page 432: ......
Page 434: ......
Page 459: ...Chapter 16 Self Diagnosis...
Page 460: ......
Page 462: ......
Page 481: ...Chapter 17 Service Mode...
Page 482: ......
Page 484: ......
Page 571: ...Chapter 18 Upgrading...
Page 572: ......
Page 574: ......
Page 603: ...Chapter 19 Service Tools...
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Page 606: ......
Page 609: ...Aug 29 2006...
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