2 - G - 7
DEVELOPING UNIT
PRCB
TCSB
SIG/MONI
5VDC
/Dmax LED Vref
LED CONT
b.
PRCB Output signals
(1)
γ
LED CONT,
γ
CONT(PRCB to TCSB)
ON/OFF control signal for gradation detection
LED.
[L]: LED ON
[H]: LED OFF
(2)
γ
/Dmax LED Vref, Vref (PRCB to TCSB)
Power supply line to the
γ
LED on the TCSB.
The voltage applied to the
γ
LED is adjusted so
that the
γ
MONI signal becomes 4.5V
[8] Dot Diameter Correction Control
Dot diameter is detected by TCSB (toner control sensor
board) and controlled by PRCB (printer control board).
1.
Operation
Dot diameter correction is performed to prevent
the fluctuation of 1 dot laser beam in diameter
due to a soil in the writing unit or a change of
developing ability.
(1) Method
Creates several same condensation dot pattern
patches changing the laser power and reads
them with
γ
sensor (PD2). Uses the laser power
where the
γ
sensor output reaches reference
voltage as MPC.
(2) Timing
a) At the end of job after every 20,000 copies.
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...
Страница 736: ...Blank page...
Страница 758: ...Blank page...
Страница 780: ...Blank page...
Страница 832: ...Blank page...
Страница 833: ...APPENDIX 7085 OVERALL WIRING DIAGRAM...
Страница 834: ......