497-022-0-599 B&K Precision, 497-022-0-599 Datasheet - Page 5

• Manufacturer Part Number: 497-022-0-599
• Description: Audio/Video Test Equipment 467/470/480/490/490B
• Manufacturer: B&K Precision

Specifications of 497-022-0-599

• Equipment Type: Video Tester
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

RESTORE
A- REMOVE SHORTS- Rotate FUNCTION switch to REMOVE
1. IF G1 Leakage in STEP 2- B reads full scale or higher.
B- CLEAN • • • • BALANCE
1. Select gun to be cleaned when:
2. Rotate FUNCTION switch to CLEAN•BALANCE. Wait 20 seconds.
3. Select gun to be cleaned, press and hold pushbutton. Meter will rise immediately. Release
4. Return to READ EMISSION. Wait for reading to stabilize. Check all guns. Repeat STEP 4
5. Repeat procedure if further improvement is required. If still unsuccessful proceed to C-
C- REJUVENATE
1. Select gun to be restored when:
2. Rotate FUNCTION switch to REJUVENATE. Wait 20 seconds.
3. Select gun to be restored. Press and hold pushbutton. Meter will rise immediately. Release
4. Return to READ EMISSION. Wait for readings to stabilize. Check all guns. Repeat STEP 4
SHORTS.
A. Set GUN SELECTOR to shorted gun.
B. Press and hold pushbutton for 2 seconds
C. Rotate FUNCTION switch to G1 LEAKAGE and observe if short is removed. Several
•Excessive G1 leakage is indicated in STEP2 but meter does not read full scale.
•Emission GOOD but too low to track with other guns.
button and check for G1-K short. STEP 2- B
and STEP 5
REJUVENATE.
•Emission is in BAD region.
•TRACKING CANNOT BE CORRECTED BY CLEAN•BALANCE
pushbutton when meter falls into bad area.
AND STEP 5 If emission is now GOOD, but further improvement of any gun is required for
TRACKING, use CLEAN•BALANCE. If emission is still BAD, then repeat REJUVENATE.
Note: If pointer does not fall release button and check for G1-K
STEP2-B
operations may be necessary.
RESTORING THE PICTURE TUBE
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