Honeywell LC13-510, Manual, Page: 32 / 76

Dual Node Module Service 2-22 9/95
2.9
2.9 PRECISION CLOCK PINNING (POWER SUPPLY REPLACEMENT)
The power supply has a pinning option for internal or external clock (see Figure 2-11). It
is pinned for internal clock unless the Precision Clock Source option is installed.
If you are replacing the power supply, check the pinning on the old supply and ensure that
the replacement is pinned the same.
Location of
the Jumper
J1
2
Position 2
Position 1
Power
Cntl
Pwr
Reset
Error
Voltage
Margin
Nom
Hi Lo
Position 2 = Internal Clock
Position 1 = External Clock
Figure 2-11 — Power Supply Showing Location of Clock Jumper
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