Printronix P7000 Series Maintenance Manual page 265

Connector P101
Stacker Power Cable
(Only on cabinet models
with the power stacker)
Figure 21. Connecting the Power Supply Tester
7. Plug the printer's power cord into the AC power outlet and the printer.
8. Insert the negative (-) lead of the voltmeter into the ground (GND) test
jack on the Monitor Block. If the negative lead does not fit into the GND
test jack, touch the negative lead to the ground (GND) pad. (Figure 22.)
9. Set the printer's power switch to 1 (on).
10. Touch the positive (+) lead of the voltmeter to the +5 V test point on the
Monitor Block. The voltage should be 4.85 to 5.15 volts. (Figure 22.)
11. Measure the voltage at the NTEMPHI test point; it should be greater than
2.4 volts. (Figure 22.)
12. Measure the voltage at the +48 V test point; it should be less than 0.2
volts. (Figure 22.)
13. Measure the voltage at the +8.5 V test point; it should be less than 0.2
volts. (Figure 22.)
14. Press and HOLD IN the Push Button on the Monitor Block. (Figure 22.)
15. Measure the +5 V test point. It should be 4.85 to 5.15 volts.
Power Supply Tester Load
Block — Can become warm
when used continuously
Pin 1
Pin 1
Controller Board
Connector J101
Adjustments and Tests
Pin 1
Power Supply Board
265