23
The fuse is a Schurter # MSF 125 034.4216
Replacement fuses are available from several sources. For reference, at the time of this writing,
replacement fuses were available from:
Allied Electronics order number is: 798-0248.
DigiKey order number is: F863-ND
6.3.2 Jumper Block JP1
Note the different configurations, depending on PC board revision level.
The AVT-718 board name, the date, and the board revision level can all be found on the bottom
of the board, in copper.
Note that the PC board revision level does have to match (and often will not match) the revision
level noted in the white block on the top of the board. For this discussion, use the actual board
revision level (on the bottom of the board, in copper).
6.3.2.1 AVT-718 PC board revision levels “A” to “F”
Jumper block JP1 is a 22-pin header that permits assignment of signals to the pins of P3, the
“Network” connector.
JP1 is numbered such that all odd numbered pins are in one row and all even numbered pins are
in the other row.
A diagram of JP1 is shown in Figure 2.
The default configuration for JP1 is the first 7 pin pairs are shunted.
The default configuration is shown in Table 1.
Refer to the AVT-718 unit block diagram, Figure 1. Included on the block diagram are all signal
assignments and pin numbers for JP1 and P3.
6.3.2.2 AVT-718 PC board revision level “G”
Jumper block JP1 is a 24-pin header that permits assignment of signals to the pins of P3, the
“Network” connector.
JP1 pins #23 and #24 were added permit selection of the “V-Batt” source to the KWP, UBP, and
LIN network pull-up resistors (K-lines). By removing the shunt and then installing a wire
(wire wrap, 30 AWG) the user can provide an external or alternate source of power for the
network pull-up resistors that is separate from the power source to the AVT-718 unit.
JP1 is numbered such that all odd numbered pins are in one row and all even numbered pins are
in the other row.
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