Yamaha AW2816 Service Manual page 27

4. MAIN and SUB-CPU Circuit Boards
(Time required: About 25 minutes)
4-1 Remove the eight (8) knobs marked [410] and the
two (2) knobs marked [420] from the control panel
side. (Fig.2)
4-2 Remove the bottom cover. (See procedure 1.)
4-3 Remove the bottom chassis assembly. (See
procedure 3-2.)
4-4 Remove the two (2) screws marked [700F] and the
nine (9) screws marked [700G]. The rear chassis
can then be removed with the MAIN and SUB-CPU
circuit boards. (Fig.5)
4-5 Remove the five (5) screws marked [700H], the two
(2) screws marked [710], the screw marked [720D]
and the five (5) U-shaped holders marked [660A].
The MAIN circuit board can then be removed from
the rear chassis. (Fig.6)
4-6 Remove the three (3) screws marked [700I], the
screw marked [720E] and the four (4) U-shaped
holders marked [660B]. The SUB-CPU circuit board
can then be removed from the rear chassis. (Fig.6)
〈 Rear View 〉
〈 Bottom View 〉
SUB-CPU
[700G]
[700G]
5. PN, SUB-INV Circuit Boards and LCD
(Time required: About 30 minutes each)
5-1 Remove the JOG knob, the SHUTTLE knob, the two
(2) knobs marked [T130] and the knobs marked [410],
[420], [440] and [450] from the control panel side. (Fig.2)
5-2 Remove the bottom cover. (See procedure 1.)
5-3 Remove the SUB-FADER circuit board. (See
procedure 2.)
5-4 Remove the bottom chassis assembly. (See
procedure 3-2.)
5-5 Remove the rear chassis with the MAIN and SUB-
CPU circuit boards. (See procedure 4-4.)
[700F]
MAIN
[700G]
[720D]
MAIN
[710]
[700I] [720E]
Rear chassis
SUB-CPU
[700]: Bind Head Tapping Screw-B
3.0X8 MFZN2BL (EP600190)
[710]: Pan Head Screw
2.6X6 MFNI33 (VT267800)
[720]: Bind Head Tapping Screw-S
3.0X6 MFZN2BL (EP630210)
[700]: Bind Head Tapping Screw-B
3.0X8 MFZN2BL (EP600190)
Fig.5
[660A]
[700H]
[700H] [700H]
[660B] [700I]
Fig.6
AW2816
27