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1-3
Step
1
If LED #1 is illuminated, center the Lower Torque Arm, press the NOT
RDY button, and ensure that the LED goes out. If the LED remains lit,
proceed to Step 2.
2
Check the limit switch and associated wiring. If the LED is still lit,
proceed to Step 3.
Monitor output voltage from the optical pot. Verify range of +5 to -5
volts as arm is moved to its extremes; zero volts should be near the
3
center of travel. Readjust if necessary.
4
Measure the output voltage from the lower tacho generator. This should
be approximately +3.0 volts with the projector running in REWIND.
Replace generator if necessary.
5
If the LED still remains lit, the 2267 keypad or the 2293 CPU/Main
Logic card could be defective. Repair or replace as necessary.
1-4
Step
1
If LED #2 is illuminated, center the Upper Torque Arm, press the NOT
RDY button, and ensure that the LED goes out. If the LED remains lit,
proceed to Step 2.
2
Check the limit switch and associated wiring. If the LED is still lit,
proceed to Step 3.
Monitor output voltage from the optical pot. Verify range of +5 to -5
volts as arm is moved to its extremes; zero volts should be near the
center of travel. Readjust if necessary.
3
4
Measure the output voltage from the upper tacho generator. This should
be approximately -3. volts with the projector running in REWIND.
Replace generator if necessary.
5
If the LED still remains lit, the 2267 keypad or the 2293 CPU/Main
Logic card could be defective. Repair or replace as necessary.
CHRISTIE INC. - - 35/70 Service/PM Manual
CHRISTIE INC.
July, 1997
READY DIAGNOSTIC TABLE
LED is on – CONDITION 3: LED #1 is on.
LED is on – CONDITION 4: LED #2 is on.
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
Diagnostic
Result
Result
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