User manual SHARP SF-2116 SERVICE MANUAL

[. . . ] SERVICE MANUAL CODE: 00ZSF2118SMRE SF-2116 MODEL SF-2118 MODEL Option SF-2116 · Paper tray (SF-UB15) · Multi paper feed unit (SF-MF15) · Two-step paper feed unit (SF-CM15) · Personal counter (SF-71A/71B) · 10-bin sorter (SF-S17) @ · Reverse document feeder (SF-A15) @ SF-2118 @ For the options, refer to their service manuals. CONTENTS [ 1 ] PRODUCT OUTLINE . 1 ­ 1 [ 2 ] PRODUCT SPECIFICATIONS . 3 ­ 1 [ 4 ] UNPACKING AND INSTALLATION . 4 ­ 1 [ 5 ] DESCRIPTION ON EACH SECTION . [. . . ] If the resolutions are within the specified range, the adjustment is completed. If not, adjust by shifting the relative position of the zooming can to the drive cam. Turn off/on the power to initialize the lens and No. Check the focus in the enlargement mode again. Resolution standards Copy center Normal (100%) (2) (3) Turn off/on the power to initialize the lens and No. If the focus is improper, perform the focus adjustment of the normal ratio as follows: (Copy) Check points 4. 5 5. 0 5. 6 6. 3 7. 1 1scale: 1mm (-) direction (+) direction (3) Example: In the case of O. L value +1. 0, this position is the reference position. (Unit: lines/mm) Corners 4. 5 4. 5 2. 8 5. 0 5. 0 3. 2 Enlargement (200%) Reduction (50%) (3)-1 Make a copy of the test chart on an A4 or 8 1/2 × 11 paper. (3)-2 Check the resolution at the four corners and the center of the copy image. If the resolutions are within the specified range, the adjustment is completed. (Loosen screw A at that time. ) (3)-3 If the resolutions are not within the specified range, use the No. (Loosen screw A at this time. ) 2. 8 3. 2 3. 6 4. 0 8. 0 9. 0 9. 1 9. 2 9. 2 9. 2 9. 2 9. 2 Zooming cam Zooming cam gear Screw A Do not move the zooming cam gear at this time. (4) Turn off/on the power to initialize the lens and No. Check the focus in the normal ratio again. Resolution standards Copy center Normal (100%) Enlargement (200%) Reduction (50%) 5. 0 5. 0 3. 2 (Unit: lines/mm) Corners 4. 5 4. 5 2. 8 3 When the zooming can position is changed in 2, check the focus in the normal mode again. If the resolutions are out of the specified range, perform the focus adjustment in the normal mode again. * Repeat 2 and 3 until the proper focus is obtained in the normal mode and the enlargement mode (200%). 7­7 E. Horizontal copy magnification ratio adjustment a. This adjustment is performed to meet the displayed magnification ratio with the actual one. This adjustment must be performed in the following cases: (2) Replace the displayed value with the copy magnification ratio correction rate obtained in (1). (Input value) = (Previously set value) / (Copy magnification ratio correction rate [%]) ×10 (Example) When the previously set value is 25, the input values of examples 1 and 2 are as follows: · · · · When the main PWB is replaced. When the EEPROM in the main PWB is replaced. U2 occurs. · · Example 1: 35 = 25 + (1 × 10) Example 2: 15 = 25 + (­1 × 10) Enter the input value and press the print switch. 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. [. . . ] Since the thermistor pin voltage is higher then the set level, the output signal HL from the CPU is driven to LOW. This HL signal is passed through TR Q3 to the solid state relay (SSR). When, therefore, the HL signal is LOW, the internal triac turns on. When the internal triac turns on, a pulse is applied to the gate of external triac to flow a current from the power through the heater lamp to the triac, lighting the heater lamp. [. . . ]