Lucent Technologies Lineage
®
2000 125A Ferroresonant Rectifier J85502C-1
Issue 8 July 1999
Spare Parts and Replacement Procedures 8 - 19
Thyristor (Q1)
1. Perform the steps in “Diode Heat Sink Assembly” in this
section to move the diode heat sink completely out of the
way.
2. Note their positions and remove the quick-disconnect
connector tabs from the Q1 terminals.
3. Remove the screws that secure Q1 to the heat sink. Save
the thermal pad for reinstallation.
Relay (K2)
1. Perform the steps in “Diode Heat Sink Assembly” in this
section to move the diode heat sink assembly completely
out of the way.
2. Noting their positions, remove the quick-disconnect
connectors from the K2 terminal tabs.
3. Using a rachet-type socket wrench (with an extension and
a 1/4-inch socket) loosen the rear mounting nut (behind
K2) and remove the front mounting nut. Then, remove K2
by pulling forward.
Contactor Relay
(K1)
1. Perform the steps in “Diode Heat Sink Assembly” in this
section to move the diode heat sink completely out of the
way.
Note
Thyristor (Q1) is mounted on the heat sink attached to the ac
capacitor bracket to the left of C11.
Note
Relay (K2) is mounted on the ac capacitor bracket to the left of
C10.
Note
Contactor relay (K1) is mounted below and to the left of ac
capacitor C10 and left of K2.