Olec Accuprint AP30-5000, Руководство по обслуживанию, Страница: 91 / 138

94MS36 Rev. F2 S/W Ver 2.06 13-11
Capacitors and Level Switching
The capacitors pass all the current that flows through the lamp. They are
also used to switch power levels.
• The capacitors for the AL 54, AL 54-480, AL 64, AL 84, AL 84-480, AL
94, are divided into three sections. All units have one or two idle
capacitors, they are connected with a yellow wire. High power capacitors
are switched in during warm-up and high power exposures. There are
two high power capacitors connected with a blue wire. All capacitors
have an orange wire which acts as a common.
• The capacitors for high and medium levels are pulled in with relays during
warm-up and exposures. The medium relay will pull in to select medium
power. In this case the medium relay will also always pull in for high
power exposures.
• The capacitors set the operating current of the lamp. If the lamp output
has changed rapidly, inspect the capacitors for swelling. The design of
capacitor we use will burn open if it begins to short. A swollen capacitor
should be replaced, and the unit should be tested to see that the capacitor
did not damage the high or medium relay. To test the unit’s ability to
switch power levels, make a manual exposure, then switch between the
power levels, noting the change in intensity. When switching down in
power, allow the unit three seconds to respond.
AL 54 Capacitor Assembly
DO NOT SWITCH WHILE UNIT IS ON
CAUTION
2
1
5
5
5
4
3
2
1
1 2 3
WIRES
FROM
HARNESS
WIRES TO
CAPACITOR
TOP
FRONT
VIEW OF
PC BOARD
1
2
3
1
2
3
4
WIRE COLORS
1) YELLOW
2) BROWN
3) BLUE
4) BLUE WITH WHITE STRIPE
5) ORANGE
6) BLACK
16µƒ
CAPACITOR ASSEMBLY PART # 62D1048
SWITCH ON CAPACITOR
MOUNTING BRACKET
4 3 2 1
REAR VIEW OF
PC BOARD
6
3
1
16µƒ
12µƒ
12µƒ