DIAGNOSTICS
Troubleshooting
30JUL07
8F2919
Page
310 of 326
EXPOSURE TRANSPORT BOARD (ETB)
Table 7
LEDs and Test Points for the ETB
Item
Description
D1 (LED)
TX data - flashing indicates serial activity.
D2 (LED)
Enable SERVO MOTOR DRIVER - ON = DRIVER enabled.
D3 (LED)
RX data - flashing indicates serial activity.
D5 (LED)
Programmable LED 1 - flashes very fast to indicate DSP is running.
D6 (LED)
Programmable LED 2 - turns ON when RUN command is issued.
D7 (LED)
Programmable LED - velocity lock (turns ON when MOTOR is turning at
velocity setpoint).
D8 (LED)
Programmable LED - not used.
D9 (LED)
Programmable LED - flashing indicates DSP is running (flashes at 10
Hz rate).
D10 (LED)
Programmable LED - flashing indicates DSP is running (flashes at 5 Hz
rate).
D21 (LED)
FILM AT ENTRANCE SENSOR - ON = film present.
D25 (LED)
V5 present - ON = 5 V to BOARD is present.
D27 (LED)
V24 hazard present - ON = 24 V present.
D29 (LED)
SERVO MOTOR 24V - ON = power to SERVO MOTOR BRIDGE.
TP1
Test point for CAP4QEP3 (filtered encoder index).
TP2
Test point for ground.
TP3
Test point for 3 V DC.
TP4
Test point for ADC3 (digital POT V gain).
TP5
Test point for ADC2 (digital POT U gain).
TP6
Test point for ground.
TP7
Not used.
TP8
Not used.
TP9
Not used.