Oki C7200 Service Manual - Page 228

Service Guide - C7000 Series Chapter 4 Adjustments Page: 104 4.1.2.4 Motor and clutch test This self-check routine is used for testing the motor and clutch. 1. Go to the self-diagnosis (level 1) mode, and hold the (1) and (5) keys down until the upper display of "MOTOR & CLUTCH TEST" is brought up (the (1) key increments a test item and the (6) key decrements a test item). 2. Hold the (2) and (6) keys down and wait for the display for a unit to be tested to appear on the lower line (the (2) key increments a test item and the (6) key decrements a test item). Corresponding displays are listed in Table 4-2. 3. Pressing the (3) key starts the test, the unit name blinks, then the corresponding unit is driven for 10 seconds (refer to Figure 4-3). Note! The view of step 2 is restored after 10-second driving and, with the press of the corresponding switch again, the unit is driven again. l Driving corresponding units subject to the constraints listed in Table 4-2. The driving and activating out of the constraints are disabled and the constraints appear on the lower display. l The clutch solenoids must repeat on-off operations in normal printing driving (units that cannot be driven singly from a viewpoint of their mechanical structures must be driven in combination with the motor). 4. Use the (7) key to stop the drive of the unit (the corresponding unit display remains the same). 5. Repeat the cycle of steps 2 though 4 as the case may be. 6. Pressing the (4) key ends the tests (the display is restored to step 1).