Xerox 8830 - Page 246

GP1 HVPS Checkout
The purpose of this checkout procedure is to
verify correct operation of the High Voltage
Power Supply.
NOTE: Use the 26V RTN test point when
measuring all voltages. Failure to use this test
point can cause incorrect readings.
VIEW: REAR(TOP)
Figure 1. Location of HVPS Test Points
Perform the voltage checks shown in Table 1.
Table 1. HVPS Voltage Checks
COM
Meter
Lead
26V RTN
26V RTN
26V RTN
26V RTN
26V RTN
26V RTN
v-om
Meter
Lead
26V
PIN 1
GRID V
DEW
TFR I
DET I
Standby
Measured Voltage
26.5 VDC
Less than 0.05 VDC
N/A
Less than 0.05 VDC
Less than 0.05 VDC
Less than 0.05 VAC
In Print
Measured Voltage
26.5 VDC
2.3 ± 0.05 VDC
N/A
-4.20 ± 0.05 VDC
0.6 ±0.1 VDC
1.0 VAC
Diagnos
tic Code
[921-1]
[921-1]
GP1 HVPS Checkout Procedure
1/98
6-10
8830
PHOTO #0030