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|
| TROUBLESHOOTING & REPAIR |
INPUT DIODE REMOVAL AND REPLACEMENT (CONTINUED)
FIGURE F.11 – INPUT DIODE ASSEMBLY DETAILS
CONTACTOR
STRAP
PIGTAILS
HEAT |
| CHOKE |
SINK |
| |
|
| |
MYLAR |
| DIODE |
|
| |
|
| MYLAR |
|
| INPUT |
{ |
| TERMINAL |
} | STRAP | |
| BOLT | |
|
| |
THERMOSTAT |
|
|
(LEADS #306 ij) |
|
|
CHOKE |
|
|
ATTACHMENT |
|
|
POINT |
|
|
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REMOVAL PROCEDURE
Refer to Figure F.11.
1.Set the CC/CV power switch to OFF.
2.Remove input power to the machine.
WARNING
ELECTRIC SHOCK can kill.
Disconnect input power before removing the case cover and performing tests or making repairs to the machine.
3.Perform the Case Cover Assembly Removal procedure.
4.Perform the Power Capacitor Discharge procedure.
5.Perform the Case Front Assembly Removal procedure.
6.Perform the Input Contactor Removal procedure.
7.Using the 3/8" socket wrench, remove the bolt, nylon insulators and mylar insulation sheet where the diode heat sink attaches to the choke. Note order for replacement.
8.Using the 1/2" socket wrench and exten- sion, remove the nut, lock washer, flat washer, and bolt holding the heat sink to the input terminal strap. Note the flat washer under the bolt head.
9.Using the 1/2" wrench, remove the bolt and washers connecting the diode
