GENERAL NOTES
Use these notes when setting up to test any testable CRT. These notes are
applicable to all B&K Precision CRT Tester/Rejuvenators, and for all tube types
in this Setup Chart.
1. The
490B
use CA adapters. There are some tubes that do not have CA
adapters available. In these cases a CR adapter can be used on a 490B with
the use of a CC-12 cable adapter.
490B users will need the CC-12 adapter
cable when using the CR-XA Universal Adapter.
2. Set G1 to 50 V, Except for…
CRTs marked with (@), set G1 to 100 V
CRTs marked with (*), set G1 to 70 V
CRTs marked with (**), set G1 to 30 V
CRTs marked with (@@), 467 & 490 set G1 to 30V, 470 & 480 set G1 to 20V
3. CRTs marked with (#), Red and Green guns interchanged (test Red gun with
Green controls, and vice versa.)
CRTs marked with (##), Red and Blue Guns interchanged (test Red gun with
Blue controls, and vice versa.)
4. Prefix and suffix letters were deleted from CRT types, unless otherwise
specified (e.g., MV13VAHP22 is tested as 13VAHP22 and 25BP22A is tested
as 25BP22, A36JAR50X09 is tested as A36JAR50X, etc.)
5. CRTs with integral convergence assemblies, whose designation terminates
with TC01 or TC02, instead of P22, are tested in the same manner (e.g.,
19VDKTC01 are tested as 19VDKP22.)
6. Unless otherwise noted, test monochrome CRTs (includes green, amber,
black & white CRTs, etc., as well as most projection CRTs) on the RED/B&W
position.
7. For testing CRTs that are not listed in this SETUP Chart, you can contact the
manufacturer of the CRT to get the pin-outs of the CRT gun, or ask for a
match to a more common tube type with the same pin outs. Listed below are
the major CRT manufacturers.
Panasonic: (201) 392-4207 For computer monitors call (800) 726-2797
Hitachi: (800) 448-2244
Sony: (800) 236-1877
New Setup Charts with new tube listings will be published annually.
-1-
CONDENSED INSTRUCTIONS
MODELS 467 AND 490 SIMPLIFIED TEST PROCEDURE
490B Users should refer to the instruction manual for Operation Instructions.
CAUTION
Do not apply power to the CRT chassis at any time during the test of any
CRT. Completely discharge High Voltage Anode supply of CRT before
connecting it to the CRT tester
STEP 1: Set-Up
Set all controls fully counterclockwise and G2 switch (upper left) to NORM. Find proper adapter
and heater voltage in SET-UP chart. Select HTR RANGE. Plug in tube and power cord. Rotate
FUNCTION switch to SET-UP . Adjust SET HTR to read specified HTR VOLTS. Set G1 voltage
to 50 volts unless there is a * (asterisk) in the SET_UP CHART (see General Notes). Check
LEAKAGE lamps. Lamps will glow if leakage is excessive. H-K leakage cannot be repaired; use
isolation transformer. For G1-K leakage proceed to
RESTORE-(A.)
STEP 2: SET – CUTOFF
Rotate FUNCTION switch in SET CUTOFF position. Meter may read zero or slightly above or
below zero. Adjust each G2 control to ADD ONE DIVISION to reading of corresponding meter.
Use Red G2 control for black and white tubes. If max G2 does not raise pointer place G2 switch
in HIGH position.
STEP 3: TEST
Rotate FUNCTION switch to TEST position.
1. EMISSION: If all guns read in good region, emission are OK. If any gun reads BAD, proceed
to
RESTORE-(
C ).
2. TRACKING: Push and hold TRACKING button and adjust TRACKING control to set highest
gun at SET TRACKING mark on meter. Tracking is OK if the other two guns read in yellow
area. Release button to return to emission test. If tracking is bad, proceed to
RESTORE-(B).
3. LIFE: Observe emission levels. Push and hold LIFE button until readings stabilize. The less
emission drops, the longer the life expectancy. The stabilized readings should remain in the
GOOD region to assure customer satisfaction. If any gun indicates BAD during LIFE test,
proceed to
RESTORE-(B).
4. FOCUS: Push FOCUS test button. FOCUS OK lamp will glow if connection is good. Open
focus connection cannot be repaired.
-2-
RESTORING THE PICTURE TUBE
RESTORE
A-REMOVE SHORTS
1. If G1-K leakage is indicated in
STEP 1
but G1-K SHORT lamp does not light with FUNCTION
switch RESTORE position, follow STEP B-CLEAN•BALANCE
2. If G1-K Short lamp lights when function switch is in RESTORE position, press REMOVE
SHORTS button and release. Lamp will no longer glow if short is removed. Several
operations may be necessary. Wait about 10 seconds between operations. Repeat
STEP 2
and
STEP 3
after shorts are removed.
1. Select gun to be cleaned when:
•
G1-K leakage is indicated in
STEP 1
but G1-K SHORTS lamp does not glow in RESTORE
position.
•
Emission GOOD but too low to track with other guns.
•
Emission BAD in LIFE test.
2. Set FUNCTION switch to RESTORE
3. Place REJUVENATE/CLEAN•BALANCE switch to CLEAN•BALANCE. Wait 20 seconds.
4. Push RESTORE button below meter for gun selected. Pointer will rise immediately. Hold
button until pointer begins to fall. Release button when pointer falls to 0.2. NOTE: If pointer
does not continue to fall observe the G1-K SHORTS lamp. If it glows remove shorts before
proceeding.
5. Return to TEST. Wait for reading to stabilize. Repeat
STEP 2
and
STEP 3.
B – CLEAN
•
BALANCE
6. Repeat procedure if further improvement is required. If still unsuccessful
proceed to STEP C-REJUVENATE.
C- REJUVENATE
1. Select gun to be restored when:
•Emission
is in BAD region.
•TRACKING
CANNOT BE CORRECTED BY CLEAN•BALANCE
2. Set FUNCTION switch to REJUVENATE.
3. Place REJUVENATE/CLEAN•BALANCE switch to REJUVENATE. Wait 20 seconds.
4. Push RESTORE button directly under meter of lowest emission gun. Pointer will immediately
rise. Hold button until pointer begins to fall. Release immediately when pointer reaches0.5
(bad area).
Note: If pointer does not continue to fall, observe the G1-K SHORT lamp. If it
glows, remove short before proceeding.
5. Return to TEST. Wait for readings to stabilize. Repeat
STEP 2
and
STEP 3.
If emission is now GOOD but further improvement of any gun is required for
TRACKING or LIFE TEST use, CLEAN•BALANCE. If emission is still BAD repeat
Rejuvenate.
-3-
CONDENSED INSTRUCTIONS
MODELS 470 AND 480 SIMPLIFIED TEST PROCEDURE
CAUTION
Do not apply power to the CRT chassis at any time during the test of any
CRT. Completely discharge High Voltage Anode supply of CRT before
connecting it to the CRT tester
STEP 1: Set-Up
Set all controls fully counterclockwise. Find proper adapter and heater voltage in SET-UP chart.
Select HTR RANGE. Plug in tube and power cord. Rotate FUNCTION switch to SET HEATER .
Adjust HEATER control until meter reads voltage specified in SET- UP CHART.
STEP 2: LEAKAGE
Rotate FUNCTION switch to HTR-LEAKAGE. Meter reading anywhere in YELLOW area of meter
scale is acceptable. Turn GUN SELECTOR to test all guns. Excessive H-K leakage cannot
be repaired, use isolation transformer.
Rotate FUNCTION SWITCH TO G1 LEAKAGE. Meter reading anywhere in YELLOW area of
meter scale is acceptable. Turn GUN SELECTOR switch to test all guns. For excessive
leakage proceed to RESTORE –A.
STEP 3: SET G1 BIAS
Rotate FUNCTION switch to SET- G1 voltage Set G1 Bias to 50V unless there is a * (asterisk) in
SET- UP CHART (see General Notes).
STEP 4: SET – CUTOFF
Rotate FUNCTION switch in SET CUTOFF-VOLTAGE. Adjust each G2 control until meter rises
ONE DIVISION. Use GUN SELECTOR switch and corresponding G2 control with color tubes.
STEP 5: TEST
Rotate FUNCTION switch to read EMISSION. Emission is okay if meter reads in GOOD region.
Use GUN SELECTOR switch for other guns. If any gun reads BAD, proceed to RESTORE – C.
Rotate FUNCTION switch to SET TRACKING. Use GUN SELECTOR switch to select highest
reading gun. Adjust TRACKING control to make meter read at SET TRACKING mark on meter
scale. Tracking is okay if other guns read in YELLOW area on meter scale. If tracking is BAD,
proceed to
RESTORE
– B.
-4-
RESTORING THE PICTURE TUBE
RESTORE
A- REMOVE SHORTS-
Rotate FUNCTION switch to REMOVE
SHORTS.
1. IF G1 Leakage in STEP 2- B reads full scale or higher.
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
operations may be necessary.
1. Select gun to be cleaned when:
•Excessive
G1 leakage is indicated in STEP2 but meter does not read full scale.
•Emission
GOOD but too low to track with other guns.
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
button and check for G1-K short. STEP 2- B
4. Return to READ EMISSION. Wait for reading to stabilize. Check all guns. Repeat STEP 4
and STEP 5
5. Repeat procedure if further improvement is required. If still unsuccessful proceed to C-
REJUVENATE.
B- CLEAN
•
BALANCE
C- REJUVENATE
1. Select gun to be restored when:
•Emission
is in BAD region.
•TRACKING
CANNOT BE CORRECTED BY CLEAN•BALANCE
2. Rotate FUNCTION switch to REJUVENATE. Wait 20 seconds.
3. Select gun to be restored. Press and hold pushbutton. Meter will rise immediately. Release
pushbutton when meter falls into bad area.
Note: If pointer does not fall release button and check for G1-K
STEP2-B
4. Return to READ EMISSION. Wait for readings to stabilize. Check all guns. Repeat STEP 4
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.
-5-
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