M044 PCB Rev B Schematic Rev B Four 2-input AND 100ma Solenoid Driver PNP Open Collector (to GND). NO REAL TESTS, you must scope the outputs To test outputs: Disconnect: Tester to AB2 (-15V will kill tester I/O pin) Tester to AR2 (-15V will kill tester I/O pin) Tester to AS2 (-15V will kill tester I/O pin) Tester to AT2 (-15V will kill tester I/O pin) Tester to AU2 (-15V will kill tester I/O pin) Tester to AV2 (-15V will kill tester I/O pin) Connect pulldowns: UUT AR2 to resistor to -15V. UUT AS2 to resistor to -15V. UUT AT2 to resistor to -15V. UUT AU2 to resistor to -15V. Connect -15V: UUT AB2 to -15V. UUT AV2 to -15V. Single step and check output levels. O AR2 Q5-C OUT_A OUT_A = IN_A1 AND IN_A2 (ON -> conducts to GND). O AS2 Q6-C OUT_B OUT_B = IN_B1 AND IN_B2 (ON -> conducts to GND). O AT2 Q7-C OUT_C OUT_C = IN_C1 AND IN_C2 (ON -> conducts to GND). O AU2 Q8-C OUT_D OUT_D = IN_D1 AND IN_D2 (ON -> conducts to GND). AV2 CLAMP VOLTAGE (for clamping coil inductive kickback). PINS 1 I AN2 E1-3 IN_A1 2 I AP2 E1-2 IN_A2 3 I AJ2 E1-3 IN_B1 4 I AK2 E1-2 IN_B2 5 I AF2 E1-3 IN_C1 6 I AH2 E1-2 IN_C2 7 I AD2 E1-3 IN_D1 8 I AE2 E1-2 IN_D2 IIIIIIII 00000000 01 11 10 00 01 11 10 00 01 11 10 00 01 11 10 00 00000000 10 11 10 11 10 11 10 11 11111111 10 00 01 11 10 00 01 11 10 00 01 11 10 00 01 11 11111111 01 00 01 00 01 00 01 00 00000000 END