Bailey 40 Series, Instruction

Page: 71 / 139

TROUBLESHOOTING
DIAGNOSTIC POWER UP TESTS
4 - 2 WBPEEUI220760A0
®
DIAGNOSTIC POWER UP TESTS
If the troubleshooting guide fails to identify a problem in the
OIS console, follow the AC and DC power test procedures.
Check AC voltages at the line input to the power entry panel.
AC Power Test
NOTE: When the instructions state to apply power to the OIS con-
sole, switch the main circuit breaker to the ON position. To turn off
the power, switch the main circuit breaker to the OFF position.
1. Turn off power to the console. Disconnect AC power to all
equipment inside the console by unplugging the line cords
from the back of the power entry panel.
2. Apply power to the console by switching on the line circuit
breaker located at the front of the power entry panel.
3. Use a digital voltmeter to measure the AC power at each of
the five AC outlets on the power entry panel.
a. The five outlets on the power entry panel used with the
driver cabinet are all marked AC OUTLET.
b. The four outlets on the rear of the power entry panel
used with the consoles are marked: UPPER CRT, LOWER
CRT, BLOWER/AUX, POWER SUPPLY. The fifth AC outlet
is located on the front on the power entry panel and is
marked PERIPHERAL POWER.
4. The line voltage should be 90 to 132 VAC RMS for a
120-VAC input and 180 to 264 VAC for a 240-VAC input. Refer
to the
Site Planning and Preparation instruction (Table 1-3 )
for specific AC voltages.
Start-up OK but no network
interface unit (NIU)
response
(for Plant Loop only) Check NIU settings (baud rate on port A should be 19.2 kilobytes). Check NIU
cables. Try using NIU diagnostic port to test IIMCL01, IIMLM01, IIMCP02 or
IIMCP01 modules (refer to
NNIU01 NETWORK INTERFACE UNIT TEST
UTILITY in this section).
Start-up OK but no
keyboard response Check keyboard assignment. Check all cables. Check caps lock position.
Check IIMKM02A module seating and jumpers. Check OIS configuration
(keyboards/printers).
Start-up OK but no CRT
picture Check monitor AC power. Check VGA cable. Check monitor switch (sync on
green). Check 75-ohm termination. Check brightness and contrast controls.
No printer response Check AC power. Check cables. Check printer setup. Check configuration
(printers).
Table 4-1. Troubleshooting Guide
(continued)
Symptom Possible Problem or Solution