Audiolvideo Sync Board; Main Board; Speaker; Secondary Control Assembly - Zenith ZVM-131 Service Manual

4. Remove the two screws (120) securing the primary
control board and remove the control board from the
cabinet front.
NOTE: The control knobs do not have to be removed be-
cause they will fit through the openings in the front of the
cabinet.
AUDIONIDEO SYNC BOARD (65)
This board is mounted in plastiC guides on the left side of
the monitor.
1. Remove the two screws
(25)
and then remove the
top brace
(30)
from the chassis.
2.
Remove the screw
(45)
from the forward guide
(55).
3. Remove the screw
(50)
from the rear guide
(60).
4. Disconnect all cables from the board.
5.
Remove the rear guide
(60),
the board
(65),
and the
forward guide
(55)
from the chassis.
MAIN BOARD (85)
The main board is mounted on two plastiC guides that are
bolted to the chassis.
1. Spring the retaining clips to free the board from the
two plastiC guides (80).
2. Disconnect all cables from the board (85) and lift it
out of the cabinet.
SPEAKER (115)
Remove the four screws
(110)
holding the speaker
(115)
to the cabinet and pull the speaker toward the rear and
away from the cabinet.
Page 50
SECONDARY CONTROL ASSEMBLY
(ZVM-131 and ZVM-135) (135)
1.
Remove the back cover
(10)
and the top cover
(20).
2. Disconnect the cables from the secondary control as-
sembly.
3. Remove the four screws holding the cabinet front
(150)
to the, right and left mounting plates. Remove
the cabinet front.
4.
Remove the two screws
(130)
securing the second-
ary control assembly and remove the control assem-
bly from the cabinet front.
NOTE: The control knobs do not have to be removed be-
cause they will fit through the openings in the front of the
cabinet.
RGB GAIN CONTROL BOARD
(ZVM-133 and ZVM-136) (135)
1. Remove the back cover (10) and the top cover (20).
2. Disconnect the cables from the RGB gain control
board.
3. Remove the four screws holding the cabinet front
(150)
to the right and left mounting plates. Remove
the cabinet front.
4.
Remove the two screws
(130)
securing the RGB
gain control board and remove the board from the
cabinet front.
NOTE: The control knobs do not have to be removed be-
cause they will fit through the openings in the front of the
cabinet.
Disassembly/Reassembly