Yamaha O2R96 Service Manual page 37

10. OPT Circuit Board
(Time required: About 20 minutes)
10-1. Remove the SP02R96. (See procedure 1.)
10-2. Remove the MB02R96. (See procedure 2.)
10-3. Fasten the control panel assembly. (See procedure 3.)
10-4. Fasten the rear assembly U. (See procedure 4.)
10-5. Remove the four (4) screws marked [390]. The OPT
circuit board can then be removed. (Fig.5)
11. DA Circuit Board
(Time required: About 20 minutes)
11-1. Remove the SP02R96. (See procedure 1.)
11-2. Remove the MB02R96. (See procedure 2.)
11-3. Fasten the control panel assembly. (See procedure 3.)
11-4. Fasten the rear assembly U. (See procedure 4.)
11-5. Remove the three (3) screws marked [520] and the
six (6) screws marked [530]. The DA circuit board
can then be removed. (Fig.3)
12. JK1 Circuit Board
(Time required: About 25 minutes)
12-1. Remove the SP02R96. (See procedure 1.)
12-2. Remove the MB02R96. (See procedure 2.)
12-3. Fasten the control panel assembly. (See procedure 3.)
12-4. Fasten the rear assembly U. (See procedure 4.)
12-5. Remove the DA circuit board. (See procedure 11.)
12-6. Remove the three (3) screws marked [460A], the
nine (9) screws marked [480A] and the four (4)
screws marked [490]. The JK1 circuit board can then
be removed. (Fig.4)
13. JK2 (1/2) Circuit Board
(Time required: About 30 minutes)
13-1. Remove the SP02R96. (See procedure 1.)
13-2. Remove the MB02R96. (See procedure 2.)
13-3. Fasten the control panel assembly. (See procedure 3.)
13-4. Fasten the rear assembly U. (See procedure 4.)
13-5. Remove the DA circuit board. (See procedure 11.)
13-6. Remove the JK1 circuit board. (See procedure 12.)
13-7. Remove the three (3) screws marked [460B], the
two (2) screws marked [480B], the two (2) screws
marked [B] and the four (4) screws marked [C]. The
JK2 (1/2) circuit board can then be removed. (Fig. 5)
14. JK2 (2/2) Circuit Board
(Time required: About 20 minutes)
14-1. Remove the SP02R96. (See procedure 1.)
14-2. Remove the MB02R96. (See procedure 2.)
14-3. Fasten the control panel assembly. (See procedure 3.)
14-4. Fasten the rear assembly U. (See procedure 4.)
14-5. Remove the two (2) screws marked [500]. The JK2
(2/2) circuit board can then be removed. (Fig. 5)
02R96
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