Service manual

PN 4237242C
4.13-2
SERVICE AND REPAIR PROCEDURES
LINEAR POWER SUPPLY CARD
6. Remove the card from the rear panel, Figure 4.13-2:
a. Remove the #2 Phillips-head screw in the center of the card.
b. Pull the card off its four snap-type mounting posts.
Figure 4.13-2 Back View of MD II with Rear Panel Door Opened
Installation
1. On the new Linear Power Supply card, verify that jumpers X1, X2, and X3 are OFF
(Figure 4.13-2).
2. Install the new Linear Power Supply card, securing it with the #2 Phillips-head screw
(Figure 4.13-2).
3. Connect P1 (from transformer T1) to J1 (on the Linear Power Supply card), see
Figure 4.13-2.
4. Reconnect the ac power cable.
T1
LINEAR POWER
SUPPLY CARD
J1
7242021A
TEST
POINTS
#2 PHILLIPS-
HEAD SCREW
JUMPERS
(X1, X2, X3)