Chapter 6
6-5
F-6-5
[1] FIFO
[2] BD PCB
[3] Laser Unit
MN-CON: Main controller PCB
DC-CON: DC controller PCB
6.3.1.3 Sub Scan Sync Control
0012-7579
imagePRESS C1 P / imagePRESS C1 / imagePRESS C1+ (Printer) / imagePRESS C1+
The sync control of the sub scanning is the control for adjustment of the writing position of each color image formed on ITB at full-color print.
This control is performed at the sub scan sync control circuit in ASIC.
This circuit produces the sync signal (PVREQ) of the sub scanning based on ITB home position signal (ITBHP) detected by ITB home position sensor.
Here the operation of this circuit is explained.
ITB home position signal (ITBHP) output from the ITB home position sensor is detected at the sub scanning sync control circuit.
At the same time, this circuit produces PVREQ signal for each color based on ITBHP signal, output them to the main controller PCB.
The main controller PCB sends VIDEO signal to DC controller PCB synchronized with PVREQ signal for each color.
After that, DC controller PCB produces the image for each color at the specified position on ITB.
F-6-6
[1] Sub Scanning Sync Control Circuit
[2] ITB Home Position Sensor
MN-CON: Main Controller PCB
DC-CON: DC Controller PCB
DC-CON
J1122
MN-CON
PWM IC
(IC28)
PWM IC
(IC29)
[1]
LD
PBD
VDO
ASIC(IC262)
[2]
[3]
J1120
WCK
WCK
LSYNC
[2]
MN-CON
[1]
PVREQ
VDO
ASIC(IC262)
DC-CON
ITBHP
ITB
Summary of Contents for imagePRESS C1
Page 1: ...Oct 22 2008 Service Manual imagePRESS C1 Series ...
Page 2: ......
Page 6: ......
Page 38: ...Contents ...
Page 39: ...Chapter 1 Introduction ...
Page 40: ......
Page 42: ......
Page 72: ...Chapter 1 1 30 F 1 18 ...
Page 85: ...Chapter 1 1 43 T 1 26 ...
Page 88: ......
Page 89: ...Chapter 2 Installation ...
Page 90: ......
Page 94: ......
Page 234: ......
Page 235: ...Chapter 3 Basic Operation ...
Page 236: ......
Page 238: ......
Page 244: ......
Page 245: ...Chapter 4 Main Controller ...
Page 246: ......
Page 248: ......
Page 276: ...Chapter 5 Original Exposure System ...
Page 277: ......
Page 332: ...Chapter 6 Laser Exposure ...
Page 333: ......
Page 342: ...Chapter 6 6 8 F 6 10 1 Laser Light 2 Laser Shutter 3 Laser Shutter Lever 1 1 2 2 1 2 3 3 3 3 ...
Page 344: ...Chapter 7 Image Formation ...
Page 345: ......
Page 431: ...Chapter 7 7 82 ...
Page 462: ...Chapter 8 Pickup Feeding System ...
Page 463: ......
Page 504: ...Chapter 8 8 39 7 F 8 52 8 F 8 53 9 F 8 54 1 3 2 1 2 4 3 1 2 4 3 ...
Page 505: ...Chapter 8 8 40 10 F 8 55 11 F 8 56 12 F 8 57 1 4 2 3 5 4 1 3 2 1 4 2 5 3 ...
Page 506: ...Chapter 8 8 41 13 F 8 58 14 F 8 59 15 F 8 60 5 1 2 3 4 1 2 3 5 4 1 2 3 4 5 ...
Page 507: ...Chapter 8 8 42 16 F 8 61 1 2 3 4 5 ...
Page 509: ...Chapter 8 8 44 3 F 8 64 A Duplexing reversal position 4 F 8 65 2 1 A 2 1 ...
Page 510: ...Chapter 8 8 45 5 F 8 66 6 F 8 67 2 1 2 1 ...
Page 511: ...Chapter 8 8 46 7 F 8 68 8 F 8 69 3 2 1 3 2 1 ...
Page 512: ...Chapter 8 8 47 9 F 8 70 10 F 8 71 3 2 1 2 3 1 ...
Page 513: ...Chapter 8 8 48 11 F 8 72 B Duplexing re pickup stop position 12 F 8 73 3 2 B 1 3 1 2 ...
Page 514: ...Chapter 8 8 49 13 F 8 74 14 F 8 75 1 2 3 1 2 3 ...
Page 516: ...Chapter 8 8 51 F 8 77 SL3 M10 PS17 ...
Page 533: ...Chapter 8 8 68 F 8 154 1 2 4 3 2 3 4 ...
Page 534: ...Chapter 9 Fixing System ...
Page 599: ...Chapter 10 Externals and Controls ...
Page 642: ...Chapter 11 MEAP ...
Page 643: ......
Page 645: ......
Page 695: ...Chapter 12 Maintenance and Inspection ...
Page 696: ......
Page 698: ......
Page 700: ...Chapter 12 12 2 F 12 1 28 9 10 14 13 29 29 11 12 27 6 3 1 2 5 4 7 8 15 16 ...
Page 701: ...Chapter 12 12 3 F 12 2 17 20 24 23 25 26 19 18 24 21 22 ...
Page 704: ...Chapter 12 12 6 F 12 3 1 2 3 4 9 6 5 7 8 11 12 13 14 15 10 ...
Page 715: ...Chapter 12 12 17 F 12 18 1 1 2 2 ...
Page 716: ...Chapter 13 Standards and Adjustments ...
Page 717: ......
Page 719: ......
Page 732: ...Chapter 14 Correcting Faulty Images ...
Page 862: ...Chapter 15 Self Diagnosis ...
Page 894: ...Chapter 16 Service Mode ...
Page 895: ......
Page 1222: ...Chapter 17 Upgrading ...
Page 1223: ......
Page 1225: ......
Page 1256: ...Chapter 17 17 31 F 17 65 2 Turn off the main power switch and remove the USB device ...
Page 1257: ...Chapter 18 Service Tools ...
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Page 1264: ...Oct 22 2008 ...
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