
1. Remove screw (3) and lock washer (4) attaching PC board
as s em bl y ( 5 ) to Re a r Panel ( 4 8 ) •
2. Remove two screws (51 and 52) and lock washers (50 and 53)
attaching PC board assembly (5) to chassis (33).
3. Disengage wire harness connector from PC board (5).
4. Tag and unsolder all wires from transformer (6), fuseholder
(Figure 6-7, Item 25) and switch (Figure 6-7, Item 20)
attached to PC board assembly (5).
6-2-6 1120 MHz LOW PASS FILTER (22)
A. Removal (Figure 6-2)
1. Remove Dual VCO (14) (paragraph 6-2-13).
2. Remove screw (21), lock washer (20) and nut (18) attaching
wire tie(s) (19) mounting Filter (22) to chassis (33).
3. Disconnect flexible coax cables from each end of Filter (22)
and withdraw filter from chassis (33).
6-2-7 SPEAKER (27)
A. Removal (Figure 6-2)
1. Remove nual VCO (14) (paragraph 6-2-13).
2. Remove 1120 MHz Low Pass Filter (22) (paragraph 6-2-6).
3. Tag and unsolder wires from two terminals on Speaker (27).
4. Remove four nuts (29), three lock washers (28), one terminal
lug (30), four compression washers (26) and four screws (25)
attaching Speaker (27) to chassis (33). Lift Speaker from
chassis.
6-2-8 MOTHER BOARD (39) (Figure 6-2)
1. Remove Audio PC boards (42) (paragraph 6-2-9).
2. Remove Enclosed Modules (43) (paragraph 6-2-10).
3. Remove Front Panel (35) (paragraph 6-2-15).
4. Tag and unsolder wires in wire harness (not ribbon cables)
from Mother Board (39).
5. Remove four screws (40) attaching Mother Board (39) to chassis
( 33).
6-6
Summary of Contents for FM/AM-500
Page 152: ...DETAIL A 11 Figure 6 6 Dual vco 6 14 01 Assembl Y ...
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