Power Transformer - IBM 5256-1 Maintenance Information Manual

181
POWER TRANSFORMER
Removal and Replacement
1. Power off.
2. Disconnect the line cord at the wall outlet.
3. Remove the printer back cover (110).
4. Remove the wires from TB1
II.
5. DANGER
This AC capacitor might contain enough power
to cause a lethal shock or a severe burn.
Always discharge the capacitor by placing a
screwdriver from each terminal to the case.
Remove the transformer wires from C1211.
6. Remove the transformer wires from terminals E4
through E14 of board C1
D II·
7. Disconnect J 1 on the right side of the printer
II.
8. Remove the transformer grounding lead if one is
present. Do not remove the wire from E15 on
board C1 to the power supply base.
9. Remove the 4 transformer mounting screws. A
grounding washer is under the left rear leg
II.
10. Lift the transformer from the power supply.
11. Reinstall the transformer by reversing this
procedure.
1-58
D
Transformer Wires to Board C1 A 1 (189)
Transformer T1 Wires
C1 60 Hz (U.S.)
60 Hz (WT) 50 Hz (WT)
E4 10 14 16
E5 11 15 17
E6 9 13 15
E7 19 23 25
E8 20 24 26
E9
18 22
24
E10
16
20 22
E11 17 21 23
E12 15 19 21
E13
7
11 13
E14 13 17 19
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