Lenovo ThinkCentre M50 Hardware Maintenance Manual (HMM) - Page 116
Power, supply, connectors, Connector, Diskette, drive, Serial
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Power supply connectors These tables enable you to check the power supply voltages. Connector P1 OUTPUT +3.3 Vdc DC return +5 Vdc Power Good +5 AUX +12 Vdc -12 Vdc On/Off CONNECTOR PINS WIRE COLOR 1, 2, 11 Orange 3, 5, 7, 13, 15, 16, 17 Black 4, 6, 19, 20 Red 8 Gray 9 Purple 10 Yellow 12 Blue 14 Green TOLERANCE +5%, -5% N/A +5%, -5% N/A +5%, -5% +5%, -5% +10%, -10% N/A Connector P2, P3, P4, and P7 OUTPUT DC return +5 Vdc +12 Vdc CONNECTOR PINS WIRE COLOR 2, 3 Black 4 Red 1 Yellow TOLERANCE N/A +5%, -5% +5%, -5% Connector P5 (Diskette drive) OUTPUT DC return +5 Vdc +12 Vdc CONNECTOR PINS WIRE COLOR 2, 3 Black 1 Red 4 Yellow TOLERANCE N/A +5%, -5% +5%, -5% Connector P6 OUTPUT DC return +12 Vdc CONNECTOR PINS WIRE COLOR 1, 2 Black 3, 4 Yellow TOLERANCE N/A +5%, -5% Connector P8 (Serial ATA) OUTPUT DC return +12 Vdc +5 Vdc +3.3 Vdc CONNECTOR PINS WIRE COLOR 2, 4 Black 1 Red 3 Yellow 5 Orange TOLERANCE N/A +5%, -5% +5%, -5% +5%, -5% 110 Hardware Maintenance Manual