Electronics-Illustrated-1963-07

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CHECKOUT AND ADJUSTMENT 7
Remove all tubes from sockets and set all controls to maximum resistance. Timing adjustments
should be made with a stopwatch (1/10 second accuracy) or a centisecond electric timer.
Do not connect cable to dummy for steps 1 to 13.
Procedure Correct Indication Possible Trouble
1. Remove the AC plug and Pl.
Close SI. Connect ohmmeter
across Pt's socket.
Approximately 60 ohms.
AC short. T1 's primary open.
2. Replace P1. Connect ohmmeter 10,000 ohms. B+ short. Cl leaky or pofrom
pin 5 of VI to chassis.
larity incorrect.
3. Plug in VI. Set SI to ON. V1 should glow. P1 should light. R1 open. SRI, VI or T1 defective.
4. Plug in V2. Rotate R3 to minimum
resistance.
V2 should glow and go out regularly.
Adjust R3 for 10- second intervals
between flashes.
5. Step on mat -switch 53. RY1 should energize. NIT should
light. V1 should glow steadily.
6. Plug in V3.
7. Depress then release 52.
8. Set R9 to full clockwise. Depress
then release 52.
9. Depress 52 and release after
test.
10. Adjust R6. Depress 52 and
release after test.
Filament should glow.
Meter should indicate about half
scale.
M1 should deflect full scale (to the
right).
When RYI closes; meter should drop
fast to 0.
R6 sets meter drop -off time to
exactly 2 seconds.
R2, R3, R4, R5, C3, C4 or
V2 defective.
Mat- switch defective,
coil defective.
V3 defective.
RY1's
V3, R8, R9 defective. .11 con -
tacts open.
Value of R8 incorrect. Read -
just R9.
R6 open. C5 defective.
C5 or R6 incorrect value.
11. Plug in V4. Filament should glow. V4 defective.
12. Depress 52 and wait.
(Release after test.)
When RY1 closes, NL1 should light
and MI should drop. About 4
seconds later, RY2 should close and
NL2 should light.
13. Adjust R11 (robot timer). Adjust R11 so that NL2 lights 1.3
seconds after NL1 for average competition;
less time for fast guns.
V4, R13, P3, R11, R10, C6,
C7, RY2's coil SR3 or RY1 con -
tacts defective.
R11 defective .
Connect robot to the control console. Step on the mat -switch. The following should happen: After a short
wait (up to 10 seconds) th= dummy's eyes should light, followed 1.3 seconds later by gun's raising. Meter
should drop to zero in 2 seconds. NL1 and NL2 should react at same time as the eyes and gun respectively.
Continue tests;
14. Plug in V5 and be sure chest
plate is not touching back contacts.
15. Push chest plate against contarts.
V5 should not glow. RY3 should
not pull in.
RY3 should close. PL2 should light.
(No effect on meter.)
16. Depress 52. RY3 should de- energize. P2 should
go out.
Finally, check each of these sequences:
V5 defective. C9 open .
VS, R14, SR4, C8, RY3's coil,
P4, R15, C9 defective.
52 defective.
17. Step on mat -switch. Allow eyes to light, meter to drop, arm to come up. Push chest plate. The eyes
should go out, arm should remain raised. The meter should indicate more than 1.3 seconds and P2
should light.
18. Step off mat -switch and depress 52. Step on mat -switch and repeat step 17, except push chest plate after
eyes light but before lrm comes up. The eyes should go out but the arm stays down. The meter should
indicate less than 1.3 seconds and P2 should light.
19. Step off the mat- switch and depress 52. Step on mat -switch and let circuits go through cycle without
touching chest plate. The eyes mould light and stay lit, arm should come up, meter drops all the way,
P2 does not light.
If the tests up to No. 16 are successful but incorrect thereafter, the trouble is either incorrect relay contact
wiring or defective relay contacts. As a final test, check il 's wiring by plugging another O -1 ma meter in
.11. The panel meter should be inoperative while the second meter takes over.
Electronics illustrated