IBM 4247-003 Maintenance Manual - Page 324

e90atd1 open. If the rollers are not open, run T&D11 in single test mode. For Model A00, see "How To Run the Test and Diagnostic (T&D) Programs" on page 161. For Models 001, 002, and 003, see "How To Run the Test and Diagnostic (T&D) Programs" on page 201. Figure 77. Platen Pinch Roller Gear. (Viewed From Left Side) 1. Install a tractor assembly in the rear push position and install fanfold forms in the tractors. See Figure 81 on page 328. 2. Press the Path key to select the rear push forms path. 3. Press Load/Form Feed key and observe the following: a. The carriage will move past the normal left margin. b. The bellcrank, the mechanism that rotates the platen gear toward the platen, is driven by the carriage. c. The platen gear is engaged with the pinch roller gear. d. The paper feed motor turns the platen gear and the pinch roller gear until the pinch rollers are closed (raised), and the rollers touch the platen. e. The carriage moves to the right allowing the bellcrank to move away from the platen and platen gear to return to the left or home position. f. The paper feeds forward 1 form. g. Ensure the gear, washer, spring, and retaining clip are present. h. Press the Load/Form Feed key again to verify that the rollers restore to open (not touching the platen). i. To repeat this service check, press the Park key twice, and go to step 3. Chapter 5. Removals and Adjustments 324