Veeder-Root TLS4/8601 Series, Troubleshooting Manual

Page: 18 / 43

Troubleshooting Boot-Up Errors
14
BOOT-UP ERROR 3
Table 5. Incorrect Boot-Up Sequence - Console Does Not Boot
Boot-Up Sequence Visual Sequence Symptom Probable Cause
1. Console Powered On at
the breaker
No beeper sounds. The
boot-up sequence fails.
All LEDs are Off.
See Table 6 below.
Table 6. Troubleshooting Procedure if Console Does Not Boot
Probable Cause Action OK? Action OK? Action OK? Action OK? Action
1. No DC voltage
at Pins 3 and 7
of Expansion
Port connector
(Item 10 in
Figure 1).
Measure for +15 VDC
and +24VDC at Expan -
sion Port connector
(see Table 1 for pin
outs).
Yes
1. Remove the
console’s
cover and
the Display/
CPU assem -
bly follow -
ing the
assembly
removal
steps begin -
ning on page
26.
2. Check 20-pin
cable (Item
6 in
Figure 3)
between
Display/CPU
assembly
and USIOM
board for
loose plugs,
wires.
Yes Replace Dis -
play/CPU
assembly.
No Go to Probable
Causes 2, 3 or 4
below.