COPYRIGHT © 2008 MERIT ENTERTAINMENT
TN100 – PM0685-02
Tech Notes
Page 1 of 2
Tech Notes
Date: 3-7-08
merit entertainment
Re:
Installing the Power-On Harness in an Ion Game
To install the Power-On Harness, first determine what kind of motherboard is in your game using the
diagrams below. The simplest way to do this, is to notice the position of the North Bridge in relation to the
CPU Fan. The North Bridge will sit at an angle to the CPU fan on an ECS board (see Figure 1), while it will be
squared off in the same way as the fan on an ASUS board (Figure 2).
FIGURE 1 – ECS MOTHERBOARD
FIGURE 2 – ASUS MOTHERBOARD
The Power-On Harness will replace the Watchdog Harness. So to install the Power-On Harness, first remove
the Watchdog Harness, noting its routing and cutting any tie wraps as necessary. This harness runs from J14
on the I/O board to the JPanel header on the motherboard (see Figures 5 & 6 for motherboard location).
Replace the Watchdog Harness with the Power-On Harness, following the same route. Tie wrap any wires as
necessary. See Figures 3 & 4 for which harness to use with which motherboard.
FIGURE 3 – SA0356-04 FOR USE WITH ECS MOTHERBOARD
FIGURE 4 – SA0356-03 FOR USE WITH ASUS MOTHERBOARD
http://www.meritgames.com
CONNECT TO
J14 ON I/O BOARD
CONNECT TO
JPANEL ON
MOTHERBOARD
CONNECT TO
J14 ON I/O BOARD
CONNECT TO
JPANEL ON
MOTHERBOARD
CPU FAN
JPANEL
(LOCATION OF HARNESS
ON MOTHERBOARD)
NORTH BRIDGE
JPANEL
(LOCATION OF HARNESS
ON MOTHERBOARD)
NORTH BRIDGE
CPU FAN
COPYRIGHT © 2008 MERIT ENTERTAINMENT
TN100 – PM0685-02
Tech Notes
Page 2 of 2
Install the harnesses as shown in the diagrams below.
FIGURE 5 – CORRECT CONNECTION TO ECS BOARD FIGURE 6 – CORRECT CONNECTION TO ASUS BOARD
If you have any questions, please contact Merit Customer Service and Technical Support by phone at
215-639-4700 or 800-445-9353, or by e-mail at TechCenter@meritgames.com.
All wires are closest to the edge of the board
and on opposite ends of the Jpanel header.
The wire from the 4-pin connector is also furthest
from the 12-pin connector.
The connector should be on the outside corner of
the JPanel header with the two-wire side
closest to the edge of the board.