User manual SHARP SF-741

[. . . ] 5 ­ 1 [ 6 ] DISASSEMBLY AND ASSEMBLY . 9 ­ 1 [10] MEMORY TROUBLES, FLOWCHART FOR REPLACEMENT OF MAIN CONTROL PWB . 12 ­ 1 Parts marked with "!" is important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set. This document has been published to be used for after sales service only. [. . . ] If not, enter [%] in simulation 48-1 as follows: Check that the obtained copy magnification ratio is within the specified range (100 ± 0. 8%). If it is within the specified range, go to procedure (7). If not, execute simulation 48-1. · Perform the following key operation. C -- ë -- 0/ 1 -- ë-- 4 -- 8 · Perform the following key operation. C -- -- PSW -- -- PSW ë -- 0/ 1 -- ë-- 4 -- 8 "A" is displayed on the third digit of the copy quantity display, and the previously set value or 50 is displayed on the second and the first digits. Lens reference position adjustment. ") (6) Perform the magnification ratio adjustment according to the flowchart below. -- PSW -- -- PSW "C" is displayed on the third digit of the copy quantity display, and the previously set value or 50 is displayed on the second and the first digits. Numerals 1 4 2 5 8 C 3 6 9 The copy size is shorter than the original NO YES Enter a value greater than the set value 7 0/ The copy size is longer than the original NO END YES Enter a value greater than the set value (12) Adjust the copy magnification ratio according to the flowchart shown in (6). D. Resolution adjustment (Focus adjustment) 1 Normal copy ratio focus adjustment (1) Check the "O. L value" on the lens value label of the lens unit, and fit the reference position of No. 4/5 mirror adjustment screw for positioning. Loosen screw A at this time. ) <Note> After entering a value, press [PSW] (7) (8) Copy the scale at 200%. Check that the copy magnification ratio is within the specified range (100 ±0. 9%). If it is within the specified range, go to procedure (9). If not, enter % key in simulation 48-1 as follows: Lens value label · Perform the following key operation. C -- ë -- 0/ 1 -- ë-- 4 -- 8 -- PSW -- -- PSW "B" is displayed on the third digit of the copy quantity display, and the previously set value or 50 is displayed on the second and the first digits. Numerals 1 4 7 0/ 2 5 8 C 3 6 9 7­6 No. 4/5 mirror adjustment screw (Copy) Check points 4. 5 5. 0 5. 6 6. 3 7. 1 2. 8 3. 2 3. 6 4. 0 8. 0 9. 0 9. 1 9. 2 9. 2 9. 2 9. 2 9. 2 2 Perform the focus adjustment in the enlargement mode (200%). The value is stored and the ready lamp lights up. The scanning speed of the mirror base is changed to adjust the horizontal (paper transport direction) copy magnification ratio. <Adjustment procedure> (1) Put a scale on the original table as shown in the figure below, and execute simulation 48-02. The machine starts warming up and the ready lamp lights up. At the same time, the previously set value ( 1 99) is displayed. Under this state, make a normal copy and calculate the copy magnification ratio. Eg1: Copy A, of which length is shorter than original 10 20 90 100 110 Scale (Original) 10 20 90 100 110 Scale 10 20 30 40 50 60 70 80 90 50 100 11 120130 14 0 0 Space Blank paper Eg2: Copy B, of which length is longer than original 10 20 90 100 110 (3) Cancel simulation 48-02. Note: Input correction can be made in the range of 1 ­ 99 (simulation set range). 7­8 F. Comparison table of lens values and simulation input values Lens display value +4. 0 +3. 9 +3. 8 +3. 7 +3. 6 +3. 5 +3. 4 +3. 3 +3. 2 +3. 1 +3. 0 +2. 9 +2. 8 +2. 7 +2. 6 +2. 5 +2. 4 +2. 3 +2. 2 +2. 1 +2. 0 +1. 9 +1. 8 +1. 7 +1. 6 +1. 5 +1. 4 +1. 3 +1. 2 +1. 1 +1. 0 +0. 9 +0. 8 +0. 7 +0. 6 +0. 5 +0. 4 +0. 3 +0. 2 +0. 1 0 ­0. 1 ­0. 2 ­0. 3 ­0. 4 ­0. 5 ­0. 6 ­0. 7 Zoom correction (Enlargement) Sim 48-01 -- % 70 69 69 68 68 67 67 66 66 65 65 64 64 63 63 62 62 61 61 60 60 59 59 58 58 57 57 56 56 55 55 54 54 53 53 52 52 51 51 50 50 50 49 49 48 48 47 47 Zoom correction (Reduction) Sim 48-01 -- % -- % 30 31 31 32 32 33 33 34 34 35 35 36 36 37 37 38 38 39 39 40 40 41 41 42 42 43 43 44 44 45 45 46 46 47 47 43 48 49 49 50 50 50 51 51 52 52 53 53 70 69 69 68 68 67 67 66 66 65 65 64 64 63 63 62 62 61 61 60 60 59 59 58 58 57 57 56 56 55 55 54 54 53 53 52 52 51 51 50 50 50 49 49 48 48 47 47 ­0. 8 ­0. 9 ­1. 0 ­1. 1 ­1. 2 ­1. 3 ­1. 4 ­1. 5 ­1. 6 ­1. 7 ­1. 8 ­1. 9 ­2. 0 ­2. 1 ­2. 2 ­2. 3 ­2. 4 ­2. 5 ­2. 6 ­2. 7 ­2. 8 ­2. 9 ­3. 0 ­3. 1 ­3. 2 ­3. 3 ­3. 4 ­3. 5 ­3. 6 ­3. 7 ­3. 8 ­3. 9 ­4. 0 54 54 55 55 56 56 57 57 58 58 59 59 60 60 61 61 62 62 63 63 64 64 65 65 66 66 67 67 68 68 69 69 70 46 46 45 45 44 44 43 43 42 42 41 41 40 40 39 39 38 38 37 37 36 36 35 35 34 34 33 33 32 32 31 31 30 Lens display value Zoom correction (Enlargement) Sim 48-01 -- % Zoom correction (Reduction) Sim 48-01 -- % -- % 46 46 45 45 44 44 43 43 42 42 41 41 40 40 39 39 38 38 37 37 36 36 35 35 34 34 33 33 32 32 31 31 30 Sim 48-01 Sim 48-01 7­9 G. This adjustment is performed when a skew copy is made as shown below or when a part of the mirror base drive wire or the No. 1/2 mirror base is replaced. (4) Loosen the fixing screw of the rear frame side mirror base drive pulley. When La > Lb, rotate the rear frame side mirror base drive pulley in the arrow direction A. (Do not move the flange and the mirror base drive pulley shaft. ) When La < Lb, rotate the rear frame side mirror base drive pulley in the arrow direction B. [. . . ] The voltage at IC20 10 pin is higher than the voltage at IC20 11 pin (reference voltage), and IC20 13 pin is driven to LOW. With the above operations, IC9 13 pin is opened to turn off Q5, turning off the power relay. As a result, the AC power of the heater and the copy lamp is turned off. * The double protection with 1) and 2) is provided. 12 ­ 12 [When the heat roller surface temperature is lower than the set temperature] a. [. . . ]