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6. Tum on the main power switch and power switch on
control panel.
7. Adjust R6045 (EHT. ADJ.), CONTRAST and BRIGHT
controls so that the value of high voltage is 34kV j:
0.3kV and value of DC voltage is 1.9V :t 0.1 V.
8. Adjust R6066 (PROTECT 2) slowly clockwise
unm
shut-down occurs and hold that position.
9. Fully turn R6045 (EHT. ADJ.) counterclockwise.
10. Turn off the main power switch, then re-turn on it.
11. Adjust R6045 {EHT.ADJ.}
slowly clockwise
until shut-
down
occurs High Voltage
should
be 34kV :t O.5kV,
and 1 .9V :t 0.1 V on the voltage meter
just before
shut-down.
12. 11 the reading in Step 11 are not confirmed, repeat
Steps 1 to 11,
13. Fully turn R6045 (EHT. ADJ.) counterclockwise.
14. Input all black pattern signal
to LINE IN.
15. Sel the CONTRAST and BRIGHT 01 the picture
adjustment to minimum for deep black picture.
16. Adjust R6045 (EHT. ADJ.) so that
the value of
high
voltage is 34kV :t O.3kV.
17. Adjust R6089 (PROTECT 1) slowly clockwise until
shut-down occurs and hold that
position.
18. FuUy turn R6045 (EHT. ADJ.) counterclockwise.
19. Turn off the main power switch, then re-turn on it.
20. Adjust R6045 (EHT.ADJ.)
slowly clo~wise until shul-
down occurs High Voltage should be 34kV
:t O.5V.
21. If the reading ,n Step 21 are not
confirmed,
repeat
21. I( the reading in Step 21
Steps 13 to 21.
~ ~
22. Cover R6066 (PROTECT 2) and R6089 (PROTECT 1)
with the sleeve,
and secure them
in place
with silicon
bond as shown below.
8. HIGH VOLTAGE ADJ.
1. EQUIPMENT TO BE USED
High Voltage Meter
Programmable Video Generator
2. ADJUSTMENT PROCEDURE
1. Turn oft the main power switch and power switch on
control panel.
2. Input a lull black pattern signal to LINE IN.
3. Connect a high voltage meter to high vollage
distributor.
4. Turn on the main power switch and power switch.
5. Set the CONTRAST and BRIGHT 01 the picture
adjustment to minimum for deep black picture.
6. Adjust R6045 (EHT. ADJ.) on the E.P.C.Board so that
the value of high voltage is 32kV :!: O.5kV.
7. Input a full white pattern signal to LINE IN.
8. Set the CONTRAST and BRIGHT of the
picture
adjustment to maximum.
9. Confirm that the value of high voltage is 32kV :t O.5kV.
10. Cover
R6045
(EHT. ADJ.) with sleeve, and
secure
it in
place wilh silicon bond.
.-:-. 39 :-:-
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