AGFA Avantra 36/44 Service Manual page 155

Avantra 36/44 Service Manual
4. If the pump still fails to operate, check the vacuum pump fuse:
a. Turn the system off, unplug it.
b. Locate the fuse holder on the outside of the electronics box (see Sec-
tion 4.8, Vacuum in Chapter 4, Imagesetter Component Removal/
Replacement Procedure). Refer to Figure 3-3.
c. Check the fuse with an Ohm meter and replace the fuse, if necessary.
d. Plug the system in and turn the power on.
e. If the new fuse blows, turn off and unplug the system.
f. Locate and remove the electronics box (see Section 4.8, Vacuum in
Chapter 4, Imagesetter Component Removal/Replacement Procedure).
Locate the vacuum pump wires (brown and blue) inside and discon-
nect them.
g. Install a new fuse, plug the system in, and turn it on.
Continue to Step 5.
5. Using AVDIAG, choose:
a. Align
b. Primitives
c. Vacuum ON
d. Check the AC line going into the pump assembly. Using a DVM, mea-
sure the voltage across the following two points:
Pin 2 (solid state relay)
Pin 1 (volt sensing relay)
A correct voltage reading indicates that a defective vacuum pump is the
most likely problem. Remove the pump (see Section 4.8.1, Vacuum Pump
in Chapter 4, Imagesetter Component Removal/Replacement).
3-68 Diagnostics
At 110 V ⇒ 110 V
At 220 V ⇒ 110 V