Digital Equipment DEClaser 320, Руководство по обслуживанию

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5.8 0401 CALL SERVICE
5.8 0401 CALL SERVICE
Description: This message is displayed when the speed of the main motor is
incorrect. (Shown in Figure 5–8) The motor control board measures the motor
speed and transmits a signal to the DC control board. A drop in motor speed
can be caused by excessive drag in the driven load, a malfunctioning motor, or
electronic drive circuit.
Troubleshooting: Test the operation of the main motor. Enter the 0400.00
code into the 1701 test. You should hear and see the main motor running, and
eventually a PASS or FAIL massage in displayed. Make sure the top cover
interlock switch is depressed and working properly, as shown in Section 5.2.
Perform the following steps:
1. Inspect the 7-wire cable that connects from P35 on the DC control board to
the motor control board.
2. Use the following procedure to inspect the condition of the main motor load
gears:
Warning: Turn off the ac power before performing the next step.
The cooling fan that is attached to the rear of the main motor armature
can be used to manually turn the main motor. Turn off the ac line power
and manually turn the cooling fan through several revolutions. The motor
and attached gear train must move easily and freely with no binding or
sticking.
If resistance is felt, inspect all gears, rollers, and clutches for evidence of
damage. Fix or replace any defective components.
3. Swap the following components:
• DC control board
• LVPSA
• Main motor assembly
5–14 Display Error Code FIPs