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4-7. PA-239 Board
4-8. NR-69/73 Board
4-7. PA-239 Board
1. Remove the CN-1961 board. (Refer to Section 4-1.)
2. Remove the RP-114 board. (Refer to Section 4-2.)
3. Remove the DU-69 board. (Refer to Section 4-6.)
4. Remove the two screws and one support, and remove
the PA-239 board.
5. Install the new board in the reverse order of steps 1 to 4.
Adjustment after board replacement
After replacement, PA-239 board adjustment is required.
Refer to Section 6-3 for details on adjustment.
4-4 (E)
4-8. NR-69/73 Board
n
Every electrical part mounted on the NR-69/73 board
cannot be replaced. If there is any defective part, replace
the board itself.
1. Remove the CN-1961 board. (Refer to Section 4-1.)
2. Remove the RP-114 board. (Refer to Section 4-2.)
3. Remove the DU-69 board. (Refer to Section 4-6.)
4. Remove the PA-239 board. (Refer to Section 4-7.)
5. Remove the three supports.
PA-239 board
6. Disconnect the red, brown, and blue harness connec-
PS2 x 4
Support
PS2 x 4
7. Install the new board in the reverse order of steps 1 to
tors from the connectors (CN1, CN2, and CN3) of side
A of the NR-69/73 board, and remove the NR-69/73
board.
Red
Brown
NR-69/73 board
6.
Blue
Support
Support
CN3
CN2
CN1
Support
HDC-900/950 MM
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