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TROUBLESHOOTING & REPAIR |
SCR OUTPUT RECTIFIER REMOVAL AND REPLACEMENT (continued)
FIGURE F.15 — RIGHT HEAT SINK LEAD DISCONNECTION.
SCR DIODE
SCRLEADLEAD #320B
ASSEMBLY
LEAD
#320
LEAD 
#209S
LEAD 
X4
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5.Remove lead #209S and transformer lead X4 from the right side heat sink using a 1/2 in. socket wrench and 1/2 in. open end wrench. See Figure F.15.
6.Unplug the SCR gate leads G1 and G2 (see wire markers and wiring diagram).
7.Remove the four nuts holding the SCR assembly to the floor of the machine using a 3/8 in. nutdriver.
8.Clear the leads and carefully remove the SCR rectifier assembly.
NOTE: When installing the SCR rectifier assembly, apply a thin coating of Dow Corning #340 compound to the electrical connections.
9.Unplug leads 320 and 320B from the SCR heat sink thermostat on the right side at the SCR assembly.
10.Reassemble the SCR assembly in the reverse order.
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