Agilent Technologies 6890 Series Service Manual page 702

1220 Main Board, 6890A and 6890 Plus
Test points
There are seven test pads on the main board that allow you to test the GC's
regulated DC supplies (+24V, -24V, +15V, -15V, +5V) and to test the ground.
The test pads are located on the main board as shown below:
TP13
GND
Oven Access
Cutout
Figure 1220-1
Jun 2001
TP14
GND
TP
+5V
General specifications
Supply % tol
+24* ±10%
–24* ±10%
+15 ±5%
±5%
–15
±2%
5
±10%
40*
Mainboard test pads
Electrical
Agilent 6890 Gas Chromatograph Service Manual
J8
TP9
+15V
TP10
–15V
Rated I(FL) System PARD V pp
4.75 A <1 V
0.75 A <1 V
0.40 A <250 mV
0.30 A <250 mV
4.5 A <150 mV
11.25 A (1)
Hole for
Xfmr
cable
TP11
–24V
TP12
+24V
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