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LED 1
GBR Line Code Recognition (8051) Board
LED 4
LED Indicators:
LED1 (top)
LED2
LED3
LED4 (bottom)
Lo to Hi Comparator
Hi to Lo Comparator
Probe B
Probe A
Test Points:
T1
Ground
T2
+5VDC
T3
Probe A Preamp
T4
Probe B Preamp
T5
Lo to Hi Interrupt
T6
Hi to Lo Interrupt
T7
Read Signal
T8
Lo to Hi Comparator
T9
Hi to Lo Comparator
GBR Line Code Board Figure
SMART FEEDER SERVICE MANUAL
ISSUE 09/00
REPAIR INFORMATION
SECTION D – PAGE 33