2 - G - 4
DEVELOPING UNIT
PRCB
DCPS2
DCPS1
DPSB
DPS
DTSB
TCSB
24VDC
24VDC
PGND
12VDC
5VDC
SGND
M2 CONT
M2 F/R
SGND
M2 EM
M3 CONT
M3 CLK
M3 EM
DPS ANG
AGND
TH5 ANG1
TH5 ANG2
TH5 ANG1
TH5 ANG2
12VDC
5VDC
DRUM TEMP
AGND
5VDC
Dmax LED CONT
/Dmax LED Vref
JAM LED CONT
Dmax SIG
Dmax MONI
JAM SIG
MS2
MS1
M2
M3
TH5
DPS DRIVE A
DPS DRIVE B
DPS ANG 1
DPS ANG 2
TH5
[6] Dmax Control
3
METHOD
REPLACEMENT
MODEL
7075/7085
MANUAL
SERVICE HANDBOOK
REVISED EDITION
3
DATE
Jan. 2002
PAGE
2-G-4
Dmax control is performed by the TCSB (toner control
sensor board), M2 (drum), M3 (developing), and so
on. These parts are controlled by the PRCB (printer
control board). Related boards and sensors are
DPSB (drum potential sensor board), DPS (drum
potential sensor), DTSB (drum temperature sensor
board)(7075 only), and TH5 (drum temperature
sensor).
When the front right or left door of this machine opens
or closes, MS1 (interlock 1) or MS2 (interlock 2)
operates to interrupt the DC power supply to the motor,
stopping the M2 and M3.
1.
Operation
The purpose of Dmax control is to adjust the
maximum density to the reference level for each
machine.
a.
Dmax control
(1) Method
Latent images are created several times at the
maximum exposure level, images are developed
with the rotational speed of the developing sleeve
varied, then each density is read by the Dmax
sensor (PD1) on the TCSB.
The developing sleeve speed detected when the
density has reached the reference level is
recorded as the optimum sleeve speed and the
developing is performed at this optimum sleeve
rotation speed.
(2) Timing
a) When the fixing temperature is lower than 50°C
at power ON
b) At the end of job after every 20,000 copies.
For 7085
For 7075
3
Содержание 7075/FORCE 75
Страница 1: ...FEBRUARY 2003 CSM 7075 F75 7085 F85 SERVICE MANUAL MODELS 7075 FORCE 75 7085 FORCE 85...
Страница 2: ......
Страница 3: ...7075 FORCE 75 7085 FORCE 85 SERVICE MANUAL FEBRUARY 2003...
Страница 39: ...OUTLINE 1...
Страница 40: ...Blank page...
Страница 55: ...1 15 MAIN BODY 11 Paper Exit Drive Section FRONT Paper exit roller Paper exit motor M10...
Страница 56: ...1 16 MAIN BODY 12 Toner Supply Drive Toner supply motor 1 M11 FRONT Toner supply motor 2 M15 Toner cartridge...
Страница 58: ...1 18 MAIN BODY 14 Web Drive Section FRONT Web drive motor M16 Cleaning web...
Страница 59: ...UNIT EXPLANATION 2...
Страница 60: ...Blank page...
Страница 62: ...2 A 2 EXTERNAL SECTION Blank page...
Страница 120: ...2 K 6 TRAY 3 PAPER FEED UNIT Blank page...
Страница 126: ...2 L 6 BY PASS TRAY Blank page...
Страница 130: ...2 M 4 VERTICAL PAPER CONVEYANCE SECTION Blank page...
Страница 154: ...2 O 8 FIXING UNIT Blank page...
Страница 165: ...DISASSEMBLY ASSEMBLY 3...
Страница 216: ...3 H 4 TONER SUPPLY UNIT Blank page...
Страница 224: ...3 I 8 CLEANING TONER RECYCLE UNIT Blank page...
Страница 232: ...3 J 8 PAPER FEED UNITS OF TRAYS 1 AND 2 Blank page...
Страница 240: ...3 K 8 TRAY 3 PAPER FEED UNIT Blank page...
Страница 292: ...3 O 18 FIXING UNIT Blank page 3 O 16...
Страница 293: ...MODELS 7075 FORCE 75 7085 FORCE 85 SERVICE SECTION FEBRUARY 2003...
Страница 294: ......
Страница 315: ...ADJUSTMENT 1...
Страница 316: ......
Страница 343: ...1 19 25 ADJUSTMENT Blank page 1 19 2...
Страница 372: ...1 44 25 ADJUSTMENT 1 ADJUSTMENT Blank page...
Страница 458: ...1 114 OTHER ADJUSTMENT Blank page 1 112 2...
Страница 497: ...ISW 2...
Страница 498: ......
Страница 511: ...SERVICE 3...
Страница 512: ......
Страница 514: ...Blank page...
Страница 550: ...3 18 SERVICE Blank page...
Страница 551: ...ELECTRICAL PARTS LIST WIRING DIAGRAMS 4...
Страница 552: ......
Страница 610: ...4 40 Blank page METHOD ADDITION MODEL 7075 7085 MANUAL SERVICE HANDBOOK REVISED EDITION 3 DATE Jan 2002 PAGE 4 34 6...
Страница 611: ...JAM ERROR CODE LIST 5...
Страница 612: ......
Страница 625: ...5 13 JAM CODE LIST Blank page 5 11 2...
Страница 659: ...TIMING CHARTS 6...
Страница 660: ......
Страница 678: ...6 18 TIMING CHARTS Blank page...
Страница 679: ...INSTALLATION INSTRUCTIONS 7...
Страница 680: ......
Страница 692: ...Blank page...
Страница 704: ...Blank page...
Страница 724: ...Blank page...
Страница 730: ...Blank page...
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Страница 780: ...Blank page...
Страница 832: ...Blank page...
Страница 833: ...APPENDIX 7085 OVERALL WIRING DIAGRAM...
Страница 834: ......