Panasonic DF–1100
6–20
ABC Circuit
This circuit consists of IC111, IC90, C211 (C203), R206 (R200) and R211 (R201). Its function is to prevent
deterioration of picture quality due to dirt on the document or degrading of the luminous energy of the Xenon
Lamp light source. The picture signal from the CCD is amplified in IC4 (CCD PCB) and IC111 and input to
IC90, where it is converted from analog to digital and the shading is corrected. When the signal exceeds
+3.0V as the result of this amplification and correction, capacitor C211 (C203) is charged through R206
(R200). This charging voltage lowers the level of the picture signal input to IC111. When the picture signal
voltage rises, this charge voltage becomes higher. When the picture signal level lowers due to the back-
ground color, etc., of a transmitting document, the voltage of the charged capacitor C211 (C203) is dis-
charged through R211 (R201). Consequently, the output of the ABC circuit is kept constant to maintain the
picture quality, regardless of changes in the CCD output level.
+12V
CCD Output
ABC Circuit Output
+5V
R206
(R200)
C211
(C203)
R211
(R201)
IC4
IC111
32(31)
36(29)
19(21)
IC112
IC90
M86072
Control
Circuit
41(24)
39(26)
40(25)
CCD PCB
VOUT1
(VOUT2)
0V
3.0V
0V
Shading Correction Circuit
The Shading Correction Circuit, included in IC90, is provided to correct for reduction in lamp intensity around
the optical lens and lamp intensity distortion due to shading of each bit. This circuit scans the reference white
on the transmitting document plate immediately before the document reaches the scanning position and
writes a compensation value according to the distortion of the waveform, at the time, into the S–RAM
(IC103).When the actual picture signal is input, the circuit corrects the picture signal shading, according to
this compensation value. This shading is carried out for each page during transmission or copy.
Offset Control Circuit
The Offset Control Circuit consists of IC112, IC90 and IC4 (CCD PCB), and controls the black level of the
CCD output to be at 0V by using the IC4 (CCD PCB).
Picture Signal Binary Coding Correction Circuit
The Picture Signal Binary Coding Correction Circuit is included in IC90. It is used to obtain a binary coding
signal which is a corrected picture and error diffused signal of a false halftone signal, which is detected from
a shaded picture signal.
Содержание PANAFAX DF-1100
Страница 1: ...DF 1100 Facsimile ORDER NO MGCS980901C0 H13 Standard Version ...
Страница 8: ...vi Notes ...
Страница 9: ...7 Chapter 1 General Description ...
Страница 17: ...General Description 1 9 External View ...
Страница 18: ...Panasonic DF 1100 1 10 Control Panel ...
Страница 22: ...Panasonic DF 1100 1 14 Notes ...
Страница 23: ...Chapter 2 Disassembly Instruction ...
Страница 55: ...Disassembly Instruction 2 33 2 16 Screw Identification Template ...
Страница 56: ...Panasonic DF 1100 2 34 Notes ...
Страница 57: ...Chapter 3 Maintenance Adjustments and Check Points ...
Страница 64: ...Panasonic DF 1100 3 8 3 7 General Circuit Diagram 3 7 1 Fax Circuit ...
Страница 65: ...Maintenance Adjustments and Checkpoints 3 9 3 7 2 Printer Circuit ...
Страница 66: ...Panasonic DF 1100 3 10 3 7 3 Option Cassette Circuit ...
Страница 92: ...Panasonic DF 1100 3 36 3 10 LCE PCB CN20 CN21 CN25 1 15 TEL LINE ...
Страница 99: ...Maintenance Adjustments and Checkpoints 3 43 3 12 PNS1 PCB CN39 11 1 ...
Страница 113: ...Chapter 4 Troubleshooting ...
Страница 166: ...Panasonic DF 1100 4 54 Notes ...
Страница 167: ...Chapter 5 Test Modes ...
Страница 192: ...Panasonic DF 1100 5 26 Fuser Error Detection ...
Страница 196: ...Panasonic DF 1100 5 30 Notes ...
Страница 197: ...Chapter 6 System Description ...
Страница 236: ...Panasonic DF 1100 6 40 Notes ...
Страница 237: ...Chapter 7 Exploded View Parts List ...
Страница 244: ...Panasonic DF 1100 7 8 Notes ...
Страница 250: ...Panasonic DF 1100 7 14 Notes ...
Страница 254: ...Panasonic DF 1100 7 18 Notes ...
Страница 258: ...Panasonic DF 1100 7 22 Notes ...
Страница 264: ...Panasonic DF 1100 7 28 Notes ...
Страница 274: ...Panasonic DF 1100 7 38 Notes ...
Страница 275: ...Chapter 8 Installation ...
Страница 276: ...Panasonic DF 1100 8 2 Notes ...
Страница 291: ...Chapter 9 Options and Supplies ...
Страница 296: ...Panasonic DF 1100 9 6 Notes ...
Страница 297: ...Chapter 10 Schematic Diagram ...
Страница 298: ...Panasonic DF 1100 10 2 ...
Страница 299: ...Schematic Diagram 10 3 ...
Страница 300: ...Panasonic DF 1100 10 4 ...
Страница 301: ...Schematic Diagram 10 5 ...
Страница 302: ...Panasonic DF 1100 10 6 ...
Страница 303: ...Schematic Diagram 10 7 ...
Страница 304: ...Panasonic DF 1100 10 8 ...
Страница 305: ...Schematic Diagram 10 9 ...
Страница 306: ...Panasonic DF 1100 10 10 ...
Страница 307: ...Schematic Diagram 10 11 ...
Страница 308: ...Panasonic DF 1100 10 12 ...
Страница 309: ...Schematic Diagram 10 13 ...
Страница 310: ...Panasonic DF 1100 10 14 ...
Страница 311: ...Schematic Diagram 10 15 ...
Страница 312: ...Panasonic DF 1100 10 16 ...
Страница 313: ...Schematic Diagram 10 17 ...
Страница 314: ...Panasonic DF 1100 10 18 ...
Страница 315: ...Schematic Diagram 10 19 ...
Страница 316: ...Panasonic DF 1100 10 20 ...
Страница 317: ...Schematic Diagram 10 21 ...
Страница 318: ...Panasonic DF 1100 10 22 ...
Страница 319: ...Schematic Diagram 10 23 ...
Страница 320: ...Panasonic DF 1100 10 24 ...
Страница 321: ...Schematic Diagram 10 25 ...
Страница 322: ...Panasonic DF 1100 10 26 ...
Страница 323: ...Schematic Diagram 10 27 ...
Страница 324: ...Panasonic DF 1100 10 28 ...
Страница 325: ...Schematic Diagram 10 29 ...
Страница 326: ...Panasonic DF 1100 10 30 ...
Страница 327: ...Schematic Diagram 10 31 ...
Страница 328: ...Panasonic DF 1100 10 32 ...
Страница 329: ...Schematic Diagram 10 33 ...
Страница 330: ...Panasonic DF 1100 10 34 LVPS 100V ...
Страница 331: ...Schematic Diagram 10 35 LVPS 200V ...
Страница 332: ...Panasonic DF 1100 10 36 Note ...
Страница 333: ...Printed in Japan DZZSM064 ...