IET Labs, Inc. RLC Digibridge 1693, User And Service Manual, Page: 152 / 171

128
1693 RLC Digibridge
Service and Maintenance
5.7.4 Power Supply and Regulator
Board
To verify that the power supply (700011-4) is work-
ing properly, confirm the following voltage outputs
(See Figure 5-12).
• Red to black wire = +5 V (±0.2 V)
• Yellow to black wire = +12 V (±0.8 V)
• Blue to black wire = -12 V (±0.6 V)
To verify that the regulator board (750023) is work-
ing properly, confirm the following voltage outputs
(See Figure 5-12).
+5 V Digital
GND Digital
+5 V Analog
-8 V Analog
GND Analog
GND Analog
-8 V Analog
+5 V Analog
GND Digital
+5 V Digital
Regulator Board Test Points
10
5
1
Power Supply Test Points
Figure 5-12: Power Supply and Regulator Board Test Points
For replacement Power Supply Assembly, contact IET Labs.
+5 V values (±0.2 V)
• Pin 1 to Pin 2
• Pin 3 to Pin 5
• Pin 8 to Pin 6
• Pin 10 to Pin 9
-8 V values (±0.4 V)
• Pin 4 to Pin 5
• Pin 7 to Pin 6
CAUTION
To prevent damage to the unit, avoid
short-circuiting the pins.