Yamaha Bass Amplifier service manual Specifications, Panel Layout, F-20B

Page 3
 SPECIFICATIONS

F-20B

 PANEL LAYOUT SPECIFICATIONS

Rated Output Power:

20W

Speaker:

25cm x 1

Controls:

VOLUME, TREBLE, HIGH

 

MID, LOW MID, BASS,

 

Input Level Select Switch

 

(PASSIVE/ACTIVE)

Input/Output Terminals:

INPUT, AUX IN, PHONES

Power Consumption:

25W/120V (UL, CSA)

 

25W/230V (E, BS)

Power Requirements:

U.S. and Canadian mod-

 

els: 120V, 60Hz

 

General model: 230V,

 

50Hz

Dimensions (W x H x D) : 357 x 453 x 242mm (14.1"

 

x 17.8" x 9.5")

Weight:

10.5kg (23 lbs 2 oz)

Manual background PANEL LAYOUT

INPUT

PASSIVE/ACTIVE (Input Level Select Switch)

VOLUME

* No sound is produced when the VOLUME knob is set to "0".

ACTIVE EQUALIZER TREBLE

HIGH MID

LOW MID BASS

POWER INDICATOR

* The lamp will light when the amplifier's power switch is ON.

AUX IN

* Use the volume control on the audio device to control its volume level.

PHONES

* The speaker will produce no sound when a pair of headphones is connected to this jack.

POWER

3

Image 3
Contents BASS AMPLIFIER CONTENTSIMPORTANT NOTICE FOR THE UNITED KINGDOM F-20BWARNING CHEMICAL CONTENT NOTICE IMPORTANT NOTICESPECIFICATIONS PANEL LAYOUTF-20B POWER TRANSFORMER BLOCK DIAGRAMCIRCUIT BOARD LAYOUT POWER AMPF-20B DISASSEMBLY PROCEDURE1.Pre-MainUnit Time required about 2 min 2.Speaker Time required about 2 min5.Power Transformer Time required about 4 min F-20B 4.MAIN 2/2 Circuit BoardTime required about 3 min F-20B CIRCUIT BOARDSINSPECTIONS IC BLOCK DIAGRAM2.Power supply 3.Inspection procedureF-20B CONTENSPARTS LIST BASS AMPLIFIER20 Pre-MainUnit OVERALL ASSEMBLY10 Overall Cabinet Assembly F-20BNew parts F-20BDESCRIPTION REMARKSPRE-MAINUNIT V 6 9 5 4 8 0 0 Chassis F-20BF-20B ELECTRICAL PARTSHF456330 F-20B5 F-20B OVERALL CIRCUIT DIAGRAMABCDEFG P.1 F-20B