HP Designjet 3D Service Manual page 136

M. Power UP / Boot
1. Chamber won't heat up:
2. Head won't heat up.
1. Verify top and side panels and insulation are
installed.
2. Verify chamber fans are operating.
3. Check J3 heater connector/pins on the PDB.
4. Relay failed on PDB, replace PDB.
5. See error code 14-40.
1. Low AC input power. Make sure system is
NOT attached to an ext. cord/power strip
2. Fuse on the 120 VDC supply is blown (on
PDB).
3. Umbilical cable connector loose at head
board - check to make sure it is fully seated.
4. If head board with LED's is present, check
model and support 120VDC LEDs at head
board.
• If both model (upper) and support (lower)
LEDs are illuminated, head heater is bad.
Replace head.
• If only the model LED (lower) is illumi-
nated, replace the 120VDC power supply
• If only the support LED (upper) is illumi-
nated, replace the power distribution
board
5. If head board with LED's is not present, use
volt meter to check for 120 VDC at head
board.
• If 120VDC present at both model and
support side, heater is bad. Replace
head.
• If no 120VDC at support side, replace
120VDC power supply.
• If no 120VDC at model side, replace
power distribution board.
6. T/C board is bad. Replace T/C board
7. Head Board is bad. Replace Head Board
8. Check ground between Toggle Plate and
Head Board. If open, check for missing
washers on head.
9. The heater wires in the umbilical cable are
broken
10. Replace toggle head
1 1. See error code 14- 1 33.
-120