HD4070 PC-104 UPGRADE
2
Field Service Bulletin
2
DANGER
ELECTRIC SHOCK CAN KILL
Turn off all electrical power before removing the power supply cover. Press the power
supply OFF (0) pushbutton switch and set the line disconnect switch to OFF. In the
U.S., use a “lock-out and tag-out” procedure until the service or maintenance is
complete. In other countries, follow appropriate local or national safety procedures.
Remove the old PC-104 stack and cables (041664)
Note: the existing ribbon cables should be removed with the old PC-104 stack. The new PC-104 stack
has new cables attached to it when shipped.
1. Turn OFF main power.
2. Remove the cables that lead to the PC-104 stack from the breakout board and the floppy drive in the following order
(see figure 1). The power source cable is removed at the PC-104 stack (B1, J25). The connector on the end of the
power cable is designated as P50.
a. J5 on the Breakout Board (Analog/Digital I/O ribbon cable to B6, J1)
b. J6 on the breakout board (Digital I/O ribbon cable to B5, J1)
c. J8 on the breakout board (Digital I/O ribbon cable to B5, J4)
d. J15 on the breakout board (Digital I/O ribbon cable to B4, J1)
e. J11 on the breakout board (Digital I/O ribbon cable to B4, J4)
f. J10 on the breakout board (Serial ribbon cable to B3, J1)
g. J13 on the breakout board (I/O ribbon cable to B1, J9)
h. J1 on the Floppy Drive (I/O ribbon cable to B1, J5)
i. B1, J25 (PC-104 power cable to the DC Power Supply). The connector on the end of the power cable is
designated as P50.
The following items are for reference. No actions are required:
j. B6, J3 (No cable connection)
k. B2, J2 (IDE ribbon cable to B1, J
6
)
l. B1, J4 (IDE ribbon cable to B2, J2)
3. Remove the four (4) screws that secure B1 to the Control Box. Keep the screws for installing the replacement
PC-104 stack (141023).
4. Remove the old PC-104 stack (041664) and cables. Remove the compact flash card from the old PC-104 stack,
carefully package it, and ship it back to Hypertherm for a return credit.
