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1-24
GY-2120WD/WS
1-8-1. MA-83, MEM-83 and IF-682/683 Board
Replacement
1.
Turn off the power and remove the power cord.
2.
Put the unit on its side down, remove the four screws
(PWH3
x
6), then remove the bottom plate. (Refer to
section 1-1-1.)
3.
Remove the two screws (PWH3
x
6), then remove the
frame(R).
4.
Remove the two screws (B3
x
5) and four screws
(PWH3
x
6) and pull out the MA-83 board.
At that time, slide the MA-83 board toward the front
panel, then take out it in the direction indicated by the
arrow.
1-8. Boards Replacement
5.
Disconnect the eight connectors (CN1, CN6, CN100,
CN101, CN103, CN108, CN251 and CN252).
6.
Remove the MEM-83 board on the MA-83 board.
7.
Disconnect one connector (CN103 on the IF-682/683
board).
8.
Remove the two screws (PWH3
x
6), then remove the
IF-682/683 board.
9.
Install each board in the main unit in the reverse order
of removal.
Bottom plate
PWH3
x
6
Frame (R)
PWH3
x
6
PWH3
x
6
PWH3
x
6
PWH3
x
6
PWH3
x
6
Rear panel
PWH3
x
6
B3
x
5
PWH3
x
6
PWH3
x
6
PWH3
x
6
MA-83 board
Rear panel
B3
x
5
MA-83 board
MEM-83 board
IF-682/683 board
PWH
3
x
6
PWH3
x
6
CN103
CN100
CN101
CN1
MA-83 board
CN108
CN103
CN252
CN6
CN251
Summary of Contents for GY-2120WD
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Page 437: ...7 3 GY 2120WD WS Index Mechanical Deck Overall Block 6 7 9 8 2 1 3 4 5 ...
Page 469: ...8 1 GY 2120WD WS 8 1 Section 8 Block Diagrams Frame Wiring ...
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