5-16 Chapter 5: Testing SHB_U14
IR module circuit board
Accessories
Multimeter
Preface
Always replace a defective IR module board.
The following test can be performed to determine which function is defective.
Visual check
SMD fuses
• F1 24 V power supply emitter 1
• F2 24 V power supply emitter 2
Electrical value
Voltage
Where? ÌR module circuit board, plugs X3 and X4
Desired value
Function Plug Pin Desired value
IR detector 1 X3 20 ↔ 19 (⊥)
24 ↔ 25 (⊥)
28 ↔ 25 (⊥)
+150 V
+ 15 V
- 15 V
IR detector 2 X3 30 ↔ 29 (⊥)
34 ↔ 35 (⊥)
38 ↔ 35 (⊥)
+ 150 V
+ 15 V
- 15 V
IR detector 3 X4 2 ↔ 1 (⊥)
6 ↔ 7 (⊥)
10 ↔ 7 (⊥)
+ 150 V
+ 15 V
- 15 V
IR detector 4 X4 12 ↔ 11 (⊥)
16 ↔ 17 (⊥)
17 ↔ 20(⊥)
+ 150 V
+ 15 V
- 15 V
Motor control X3
Beam splitter X3 13 ↔ 12 (⊥) + 5 V
Pressure sensor X3 15 ↔ 17 (⊥)
16 ↔ 17 (⊥)
+ 15 V
- 15 V
Calibration cell control 1 X3 41 ↔ 42(⊥) + 15 V
Calibration cell control 2 X3 47 ↔ 48(⊥) + 15 V
Emitter 1 X3 3 ↔ 5 (-) + 5...10 V
Emitter 2 X3 7 ↔ 6 (-) + 5... 10V
Continued on next page
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