Testing and Troubleshooting
Troubleshooting T20229-G1 PCB on Card Cage Assembly
Page 8-10 MDE-3664B TRIND® Start-up, Service, and Parts Manual · June 2013
Gateway PCB (T20128-G1)
Normal Operation
Abnormal Operation/Failure
Cause/Action Required
PWR LED (CR8) constant on;
indicates 5 V supplied
No LED activity.
Check TI/RFID Power Supply
PCB for 5 V output.
CPU LED (CR6) continuous rapid
pulse. Blinking CPU LED (CR6).
A dimly lit LED can also indicate
proper operation because the
blink rate has become so fast that
the LED appears dimmer than the
+5 VDC LED (CR8).
No LED activity (indicates
software not running).
Do the following:
• CRIND reset of Gateway may
be stalled. Power TRIND down
and up and verify whether
problem is corrected.
• If not, replace Gateway PCB.
TX (CR4, CR9) and RX (CR5,
CR10) at power up display
asynchronous activity (date
transfer between Gateway and
CRIND), followed by synchronous
activity. TX LEDs indicate data to
CRIND; RX LEDs data from
CRIND.
Either or both RX LEDs on
steady.
If there is serial connection
between CRIND and Gateway is
suspect, do the following:
• P250 on Gateway PCB.
• P258 on CRIND Logic Board.
• R20437-G01 Cable
Either or both RX LEDS blinking
and TX LEDs off indicates
Gateway not responding to
CRIND poll.
Do the following:
• Check address jump jack
settings on CRIND and
Gateway boards for identical
settings (A=A; B=B).
• If address jump jack settings
are correct, replace Gateway
PCB.
Transmitter PCB (Q13579-01)
If tags are not being read, Transmitter PCB may be the cause. To verify that transmitter is
functioning, perform steps in
.
Normal Operation
Abnormal Operation/Failure
Cause/Action Required
3 LEDs (one green, two yellow) lit.
(If ambient noise conditions allow,
can also hear repetitive clicks of
transmitter switchers firing).
• LED 1 (green) indicates 5 V
supplied.
• LED 2 (yellow) indicates Side A
side switch power @ 18 V.
• LED 5 (yellow) indicates Side B
switcher power @ 18 V.
LED 1 is out or dim.
Do the following:
• Check for +5 V power supply at
J6 (pin 1 = +22 V; pin 2 = +5 V:
pin 3 = GND).
• If voltage low or non-existent,
unplug J6, cycle power on
TRIND and recheck voltage
with J6 unplugged.
• If voltage is present and correct,
replace Transmitter PCB.
LED 2 or 5 out (only one).
Side A or B module failure.
Replace Transmitter PCB.