Minolta Di551 Service Manual page 5

CONTENTS
DEVELOPING UNIT ............................................. 2-G-1
[1] Composition........................................... 2-G-1
[2] Mechanisms .......................................... 2-G-1
[3] M3 (Developing) Control........................ 2-G-2
[4] Developing Bias Control ........................ 2-G-3
[5] Dmax Control......................................... 2-G-4
[6] Gradation Correction Control................. 2-G-6
[7] Dot Diameter Correction Control ........... 2-G-7
[8] Toner Density Control............................ 2-G-7
[9] FM4 (Developing Suction) Control ........ 2-G-8
TONER SUPPLY UNIT..........................................2-H-1
[1] Composition............................................2-H-1
[2] Mechanisms ...........................................2-H-1
[3] Toner Level Detection Control................2-H-2
[4] M12 (Toner Supply) Control ...................2-H-3
CLEANING/TONER RECYCLE UNIT .................... 2-I-1
[1] Composition............................................. 2-I-1
[2] Mechanisms ............................................ 2-I-1
[3] TGR (Toner Guide Roller) Control........... 2-I-2
[4] Other Control ........................................... 2-I-2
TRAY 1/2 PAPER FEED UNIT .............................. 2-J-1
[1] Composition............................................ 2-J-1
[2] Mechanisms ........................................... 2-J-1
[3] First Paper Feed Control ........................ 2-J-3
[4] Paper Up Drive Control .......................... 2-J-5
[5] Paper Size Detection Control ................. 2-J-6
[6] No Paper Detection Control.................... 2-J-7
TRAY 3 PAPER FEED UNIT ................................. 2-K-1
[1] Composition............................................ 2-K-1
[2] Mechanisms ........................................... 2-K-1
[3] First Paper Feed Control ........................ 2-K-3
[4] Paper Up Drive Control .......................... 2-K-5
[5] Paper Size Detection Control ................. 2-K-6
[6] No Paper Detection Control.................... 2-K-7
BY-PASS TRAY..................................................... 2-L-1
[1] Composition............................................ 2-L-1
[2] Mechanisms ........................................... 2-L-1
[3] First Paper Feed Control ........................ 2-L-2
[4] Paper Up/Down Control.......................... 2-L-3
[5] Paper Size Detection Control ................. 2-L-4
[6] No Paper Detection Control.................... 2-L-5
VERTICAL CONVEYANCE SECTION ................. 2-M-1
[1] Composition........................................... 2-M-1
[2] Mechanisms .......................................... 2-M-1
[3] Vertical Conveyance Control ................. 2-M-2
ADU .......................................................................2-N-1
[1] Composition............................................2-N-1
[2] Mechanisms ...........................................2-N-2
[3] Loop/Second Paper Feed Control ..........2-N-7
[4] Paper Conveyance Control ....................2-N-9
[5] Paper Reverse and Exit Control ...........2-N-10
[6] ADU Paper Conveyance/Feed
Control ..................................................2-N-13
FIXING UNIT .........................................................2-O-1
[1] Composition ...........................................2-O-1
[2] Mechanisms ...........................................2-O-1
[3] M16 (Web Drive) Control .......................2-O-3
[4] Fixing Temperature Control ...................2-O-4
OTHER KINDS OF CONTROL ............................. 2-P-1
[1] Parts Energized when SW1
(Main Power) is OFF ............................. 2-P-1
[2] Parts that Operate when SW1 (Main
Power)/SW2 (Sub Power) is ON ............ 2-P-2
[3] Cooling Fan Control ............................... 2-P-3
[4] Operation Panel Control......................... 2-P-7
[5] Counter Control ...................................... 2-P-9
[6] Option Control ...................................... 2-P-10