Yamaha N-100 Service Manual page 7

<Top view>
Speaker L PK connector
(Squawker) [42A]
GND wire
[21A]
[21B]
[33]
[31]
<Front view>
[11c]
JACK
3. Circuit Boards and Units in the Keybed Section
3-1 Remove the upper case assembly. (See procedure 2.)
3-2 Remove the screws in the following table to remove the circuit boards and units in the keybed section.
Circuit Board and Unit
DM
MAEQ
JACK
NET
NET2
PK Connector
Power Supply Unit (U model)
Power Supply Unit
(E and B models)
Speaker (Squawker) L
Speaker (Squawker) R
Keyboard Assembly
* Four (4) spacers are attached under the NET and NET2 circuit boards respectively. Be careful not to lose them
when removing the screws.
[27B]
[27A]
DM
[33]
[31]
<Bottom view>
[11c]
[11c]
[21A]: Bind Head Tapping Screw-1 3.5X12 MFZN2W3 (WE970900)
Ref. No.
[27A] Bind Head Tapping Screw-B 3.0X6 MFZN2W3 (WE936300)
[27B] Bind Head Tapping Screw-B 3.0X6 MFZN2W3 (WE936300)
[11c] Bind Head Tapping Screw-B 3.0X8 MFZN2W3 (WE774300)
[17A] Bind Head Tapping Screw-1 3.5X20 MFZN2W3 (WE971500)
[A] Spacer
[17B] Bind Head Tapping Screw-1 3.5X20 MFZN2W3 (WE971500)
[B] Spacer
[21B] Bind Head Tapping Screw-1 3.5X12 MFZN2W3 (WE970900)
[103C] Bind Head Tapping Screw-1 3.5X12 MFZN2W3 (WE970900)
[103B] Bind Head Tapping Screw-1 3.5X12 MFZN2W3 (WE970900)
[103C] Bind Head Tapping Screw-1 3.5X12 MFZN2W3 (WE970900)
[42A] Bind Head Tapping Screw-B 4.0X8 MFZN2W3 (WE974600)
[42B] Bind Head Tapping Screw-B 4.0X8 MFZN2W3 (WE974600)
[31] Pan Head Screw 5.0X30 MFZN2W3 (WF786700)
[33] Bind Head Tapping Screw-1 4.0X14 MFZN2W3 (WE971900)
Power supply Power supply unit
unit cover (U only)
[103A] [103C]
MAEQ
[103A]
[17A], [A]
Keyboard assembly NET
(Fig. 7)
(Time required: About 11 minutes each)
Screw
Speaker R
[103B] [42B] (Squawker)
GND wire
[21A]
NET2
[17B], [B]
[33]
[31]
QTY
4
6
5
4
4
4
4
2
3
2
3
4
4
7
3
N-100
Fig.
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7