Ice vulcan, Service Manual

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Rev AA Main Board Test Points C-3
ICE Vulcan Service Manual
Note: U16 is a chip located in the upper left corner of the PCB.
Test Points Voltage/PCB Label Acceptable Voltage Range
TP165 DGRND (top left segment of PCB) Ground 0 V
TP208 DGRND (top right segment of PCB) Ground 0 V
TP333 DGRND (bottom left segment of PCB) Ground 0 V
TP342 DGRND (bottom center segment of PCB) Ground 0 V
TP344 DGRND (top right segment of rear side) Ground 0 V
TP346 DGRND (far right segment of rear side) Ground 0 V
TP347 DGRND (center left segment of rear side) Ground 0 V
TP319 +3V3 (bottom left segment of PCB) 3.25 – 3.35 V
TP304 +5V (bottom left segment of PCB) 4.75 – 5.25 V
TP320 +12V (bottom left segment of PCB) 11.75 – 12.25 V
TP329 +24V (bottom left segment of PCB) 23.5 – 24.5 V
TP40 +2V6 (just to right of U16) 2.45 – 2.75 V
TP37 +1Y8A (just to top right of U16) 1.75 – 1.95 V
TP33 +3V3U (just to top right of U16) 3.15 – 3.45 V
TP30 +1Y2D (just above L2) 1.15 – 1.35 V
TP29 +1Y8 (just to top left of U16) 1.70 – 1.90 V
TP35 +3Y15 3.10 – 3.20 V
TP42 +1Y2R (just to left of U16) 1.10 – 1.30 V
TP41 +2Y5 * (just to left of U16) 0 V *
TP64 +2Y775 (just to left of U16) 2.55 – 3.00 V
TP81 +1Y225 (just below U16) 1.18 – 1.27 V
TP77 +1Y1 (just below U16) 1.00 – 1.15 V
TP381 19.5V PHDYS 19.0 - 20.0 V
Table C-1: Main Board Test Points
*
- 2Y5 test point will remain at 0 V until after the unit under
test is programmed.