Table of Contents
Advertisement
3-1
Step
1
Verify that the brake associated with the defective system comes off
while in READY. The reel should move freely if the brake is off.
Monitor output voltage from the optical pot at the 2293 CPU/Main
Logic card. Verify range of approximately +5 to -5 volts as arm is
moved to its extremes; zero volts should be near the center of travel.
2
Readjust if necessary.
3
Monitor supply voltage at the plus (+) side of the 2285 card as the
READY button is pushed. This signal will remain for at least one
second even if the READY condition does not hold. If voltage is not
found, determine failure point: faulty fuse, relay, power supply, or
wiring. Repair or replace.
4
Measure motor resistance to determine if the associated wiring or the
motor is open. The resistance of the motor (pins 3 and 4) should be
about 10 ohms
5
If problem is not resolved after steps 1 through 4, replace the 2285 card
associated with the faulty system.
CHRISTIE INC. - - 35/70 Service/PM Manual
CHRISTIE INC.
July, 1997
READY DIAGNOSTIC TABLE
Failure of Upper or Lower Torque System –
CONDITION 1: Upper or lower torque arm does not center.
Table 7.8: READY Diagnostic Table (Continued)
7 : T r o u b l e s h o o t i n g G u i d e
Diagnostic
Result
Advertisement
Table of Contents
