Minolta CF1501 Service Manual page 130

1. SERVICE INSTRUCTIONS ............................................................................. D-1
1-1. IDENTIFICATION OF FUSES ................................................................. D-1
1-2. PARTS WHICH MUST NOT BE TOUCHED ........................................... D-2
(1) Red Painted Screws ........................................................................ D-2
(2) Variable Resistors on Board ............................................................ D-2
2. DISASSEMBLY/REASSEMBLY ...................................................................... D-3
2-1. DOORS, COVERS, AND EXTERIOR PARTS:
IDENTIFICATION AND REMOVAL PROCEDURES ............................... D-3
2-2. REMOVAL OF CIRCUIT BOARDS AND OTHER
ELECTRICAL COMPONENTS ................................................................ D-5
(1) Removal of the CCD Unit ................................................................ D-6
(2) Removal of the Image Processing Board ........................................ D-6
(3) Removal of the IR PRIF Board ........................................................ D-9
(4) Removal of the Scanner Motor Drive Board .................................... D-10
(5) Removal of the Flat Cable ............................................................... D-10
(6) Removal of DC Power Supply 2 ...................................................... D-11
(7) Removal of the Paper Size Detecting Board ................................... D-13
(8) Removal of the LED Board and ATDC Sensors Y, M, and C .......... D-13
2-3. MAINTENANCE SCHEDULE .................................................................. D-16
2-4. Guidelines for Life Specifications Values by Unit .................................... D-18
2-5. Removal of Units ..................................................................................... D-20
(1) Removal of the Toner Hopper Unit .................................................. D-21
(2) Removal of the LED Unit ................................................................. D-22
2-6. Cleaning and Disassembly of the IR Unit ................................................ D-25
(1) Cleaning of the Scanner Rails ......................................................... D-25
(2) Cleaning of the Mirrors (1st/2nd/3rd) ............................................... D-25
(3) Cleaning of the Lens ........................................................................ D-25
(4) Cleaning of the Original Glass ......................................................... D-26
(5) Removal of the Original Glass Cooling Fan Motor .......................... D-26
(6) Removal of the Scanner Motor ........................................................ D-26
(7) Removal of IR Cooling Fan Motor 2 ................................................ D-27
(8) Removal of IR Cooling Fan Motor 1 ................................................ D-28
(9) Removal of the Scanner Home Sensor ........................................... D-28
(10) Removal of the Original Cover Detecting Sensor ............................ D-29
(11) Removal of Original Size Detecting Sensors FD1 and FD2 ............ D-29
(12) Removal of Original Size Detecting Sensor CD1 ............................ D-30
(13) Removal of the Size Reset Switch .................................................. D-30
(14) Removal of the Scanner Assy ......................................................... D-30
(15) Removal of the Exposure Lamp ...................................................... D-31
(16) Removal of the Temperature Fuse .................................................. D-31
(17) Removal of the Scanner Drive Cables ............................................ D-32
(18) Winding of the Scanner Drive Cables .............................................. D-33
2-7. CLEANING AND DISASSEMBLY OF THE ENGINE PARTS ................. D-38
(1) Cleaning of the Paper Take-Up Roll ................................................ D-38
(2) Cleaning of the Paper Separator Roll .............................................. D-38
(3) Cleaning of the Synchronizing Rollers ............................................. D-38
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