Yamaha b1-Silent Maintenance Handbook Download Page 2

Page: 2 / 8

Unit Layout

Shank Stopper

Key Sensor Unit

Switch Box

AC Adaptor

Center Pedal

Soft Pedal Sensor

Damper Pedal Sensor

Switch Box

POWER

REVERB

VOLUME

OFF

PHONES

Front

PDL

KEY

DC IN 12V

Rear

Caution:Removing the Lower Front Board

The switch box obstructs removal of the
lower front board.
Use the procedure shown on the right and
remove the switch box before removing
(opening) the lower front board.

1) Disconnect the two lines on the rear of the switch box.
2) Loosen the three attachment screws, and then slide the

switch box forward to remove.

Summary of Contents for b1-Silent

Page 1: ...data to the tone generator via jacks on the back of the switch box The mute mech anism is controlled by the center pedal which operates the shank stopper with three wires Regarding maintenance damper pedal sensor position adjustment is now carried out using measurements not with VR adjustment Since this manual mostly covers new content please make sure that you refer to both new and previous manua...

Page 2: ...t PDL KEY DC IN 12V Rear Caution Removing the Lower Front Board The switch box obstructs removal of the lower front board Use the procedure shown on the right and remove the switch box before removing opening the lower front board 1 Disconnect the two lines on the rear of the switch box 2 Loosen the three attachment screws and then slide the switch box forward to remove ...

Page 3: ...dure to install the action Use the TX645600 lifting rod setter to attach the damper pedal rod Silent Piano Adjustment Standards Items requiring Adjustment Standard Shank stop position 5 7mm from the string Let Off 6 9mm from the string Shank stop position 1 2 mm Key Height Top of white keys 19mm from the key slip Black keys 12mm from the white keys Key Depth White keys 9 8mm Black keys With a blac...

Page 4: ...topper rail to adjust 2 Checking Sound Production Items to be checked With the mute disengaged make sure the shank stopper is not in contact with any of the hammer shanks Adjustment Under normal conditions the hammer shanks will not be in contact with the shank stopper if properly adjusted Make sure that the shank stop position is not too wide Make sure shank stopper operates smoothly If operation...

Page 5: ...nit 1 Make sure that the stay on the shank stopper in the lower treble section is not leaning to the left or right If it is leaning either direction loosen the stay attach ment screw and then retighten the screw so that the stay stands vertically Fig1 2 Make sure that the stays for the stoppers on the right and left sides of the bracket are not leaning If they are leaning loosen the stay attachmen...

Page 6: ...sounds intermittently Pedal depressed further close to the stroke end Buzzer 3 sound is quick and intermittent The 2 buzzer sounds when the damper around key 49 moves slightly away from the string 1 0 5mm Soft With the pedal not pressed The buzzer is not produced With the pedal depressed Buzzer sounds when the hammer rail is at 2 or 3mm from the start position Use the sensor adjustment screw to ad...

Page 7: ...ite rest value to RAM End value measurement Write end value to RAM RAM write to flash memory Complete Measurement Full Keyboard Measurement Switch the Power ON while holding the 10F 12G and 14A keys Release the keys after 2 sec Wait 30 sec The chord plays once every 2 sec Press the damper pedal once The chord plays twice Check the standard position of entire keyboard Press the damper pedal once Th...

Page 8: ...on Switch the Power ON while holding the 82F 84G and 86A keys Release the keys after 2 sec Slightly depress the damper Further depress the damper pedal Starts after damper wood moves 1mm Press the 86A key the highest black key once Further depress the damper pedal Press the 88C key the highest pitch once Notification Produces buzzer sound 1 Produces buzzer sound 2 Produces buzzer sound 3 Plays 76C...

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Yamaha b1-Silent, Maintenance Handbook

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