Boss BF-3T Service Manual

July.2002

SPECIFICATIONS.............................................................2

EXPLODED VIEW ............................................................ 3

PARTS LIST........................................................................4

TEST MODE....................................................................... 7

CIRCUIT BOARD............................................................10

CIRCUIT DIAGRAM......................................................12

AC ADAPTOR JACK HEC2392-01-150

Outer P O-KNOB S BLK/LCG (22480221) Inner P R-KNOB BF BLK/LCG (22480220) Pot "RES, MANUAL" RD912D-20-20FWH-B54-6009 (F3279854)

Jack HTJ-064-12D (13449150MF)

(13449717)

PSA CAUTION (2253753801)

LED (RED) GL-3ED8 (15029342)

BF-3T

SERVICE NOTES

Issued by RJA

BF-3 PANEL (G2217155)

BF-3 CASE (75D643C000)

P R-KNOB MF BLK/LCG (22480260) Pot "DEPTH, RATE" RD901-20-15FW-B54-006 (F3279852) "MODE" RD901-20-15FW-B54-04D (F3279853)

Jack(GUITAR IN) 2LJ-650NHW00 (F3449150)

Jack(BASS IN) HTJ-064-140

Bottom Cover (2202785100) Bottom Base (2235730500) Bottom Caution PSA (G253751603)

THUMB SCREW 3x10mm(Black) (H5029820)

(13449140HF)

FOOT BASE (2235730400)

BF-3 PEDAL (75D642T000)

17058043E0

Printed in Japan ( 0800 ) (AS)

July.2002

SPECIFICATIONS

BF-3: Flanger

• Nominal Input Level

-20 dBu

• Input Impedance

1 M ohm

• Nominal Output Level

-20 dBu

• Output Impedance

1 k ohm

• Recommended Load Impedance

10 k ohm or greater

• Delay Time

0.3 mS -- 14.4 mS (GUITAR IN)

0.3 mS -- 6.3 mS (BASS IN)

Owner’s Manual English (#G6017305)

Dry battery (9 V type) S-006P/9 V (6F22/9 V)

* The battery that was supplied with the unit is for temporary use-intended

primarily for testing its operation.

• Options

AC Adaptor PSA-Series

* 0 dBu = 0.775 Vrms

* In the interest of product improvement, the specifications and/or appearance of

this unit are subject to change without prior notice.

• LFO Speed

100 mS -- 18 S

• Residual Noise

-95 dBu (IHF-A Typ.)

• Controls

Pedal Switch, MANUAL Knob, RES (resonance) Knob, DEPTH Knob, RATE Knob, MODE Knob

• Indicator

CHECK Indicator (Serves also as tempo and battery check indicator)

• Connectors

GUITAR IN Jack, BASS IN Jack, OUTPUT A (MONO) Jack, OUTPUT B Jack, AC adaptor Jack (DC 9 V)

• Power Supply

DC 9 V: Dry battery (9 V type) S-006P/9 V (6F22/9 V)

Dry battery (9 V type) 6AM6/9 V (alkaline)

AC Adaptor (PSA-series: optional)

• Current Draw

40 mA (DC 9 V)

* Expected battery life under continuous use:

Carbon: 3 hours Alkaline: 10 hours

These figures will vary depending on the actual conditions of use.

• Dimensions

73 (W) x 129 (D) x 59 (H) mm

2-7/8 (W) x 5-1/8 (D) x 2-3/8 (H) inches

• Weight

420 g /15 oz (including Battery)

• Accessories

EXPLODED VIEW

fig.bunkai

Cushion (2226733300)

Switch JM-0404 (13129710)

BF-3T

Foot Base

(2235730400)

Thumb Screw

3 x 10 (Black) (H5029820)

Nylon Washer

3 x 6 x 0.5 ( x 2)

(H5039401)

Binding Machine

3 x 10 FeBC ( x 2)

(40010267)

Battery Connector (F3419102)

Binding Tapping 3 x 6 B1 FeBC ( x 4) (H5029325)

Spring

(2217710900)

Pedal Guide Bush

(2215770201)

Insulation

Spacer

(G2167301)

Bottom Cover

(2202785100)

Bottom Caution PSA (G253751603)

Bottom Base

(2235730500)

July.2002

PARTS LIST

fig.part1e

SAFETY PRECAUTIONS:

The parts marked have safety-related characteristics. Use only listed parts for replacement.

NOTE: The parts marked # are new. (initial parts)

CASING

2235730400 FOOT BASE (PEDAL MAT) 235-304 1 2202785100 BOTTOM COVER 202-851 1

KNOB,BUTTON

22480220 P R-KNOB (INTERNAL) (SS) BF BLK/LCG 1 22480221 P O-KNOB (EXTERNAL) (OUTER) S BLK/LCG 1

SWITCH

JACK,EXT TERMINAL

13449140MF HTJ-064-14D JACK (STEREO) JK4 1 13449105MF HTJ-064-14I JACK JK5 1

13449717 HEC2392-01-150 ADAPTOR JACK JK1 1

2235730500 BOTTOM BASE 235-305 1

# 75D643C000 CASE 1 # G2217155 PANEL 1 # 75D642T000 PEDAL 1

22480260 P R-KNOB MF BLK/LCG 3

13129710 JM-0404 SWITCH (PUSH) SW1 1

13449150MF HTJ-064-12D PHONE JACK (STEREO) JK2 1

# F3449150 2LJ-650NHW00 GUITAR IN JK3 1

CONSIDERATION ON PARTS ORDRING

When ordering any parts listed in the parts list, please specify the following items in the order sheet.

Failure to completely fill the above items with correct number and description will result in delayed or even undelivered replacement.

QTY PART NUMBER DESCRIPTION MODEL NUMBER

Ex. 10 22575241 Sharp Key C-20/50

15 2247017300 Knob (orange) DAC-15D

PWB ASSY

02565501 TC220CCA0AF-B01(MR3) IC (DSP) IC5 1 01906156 S-8520E33MC-BJS-T2 IC (DC-DC REGULATOR) IC7 1

15189261 M5218AFP-600E IC (BIPOLAR OP AMP) IC1 1 00346445 NJM2100M(TE3) IC (BIPOLAR OP AMP) IC2 1 02451434 AK4552VT IC (AD/DA) IC4 1

TRANSISTOR

15309104 2SA1586-GR(TE85R) TRANSISTOR Q11,Q12 2 15319108 2SC-3324GR-TE85R TRANSISTOR Q6,Q9 2 15319107 2SC4116-GR(TE85R) TRANSISTOR Q2,Q7,Q10,Q13 4 F5329502 2SJ190 FET Q14 1

15329103T0 2SK880-GR(TE85R) FET Q4 1

DIODE

15029342 GL3ED8 LED LED1 1

15339121 1SS301(TE85R)(CHIP) DIODE DA1,DA2 2 F5339137 SS14 VF=0.45V DIODE D4 1

75D643I000 IN JACK ASSY 1

# # 75D6439001 MAIN BOARD ASSY 1 # 75D643O000 OUT JACK ASSY 1

02897778 S-80130ALMC-JAP-T2 RESET IC IC8 1

# 02898690

# F5329530 FET 2SK879Y FET Q1,Q3,Q5,Q8 4

# F5339201 GS1G DIODE D2,D3 2

MN101C427RH BF-3 V1.00(MASK)

IC (CPU)

IC6 1

RESISTOR

00566867 RPC05T 100 J MTL.FILM RESISTOR R29 1 00567156 RPC05T 102 J MTL.FILM RESISTOR R14,R31,R51,R53 4 00567289 RPC05T 103 J MTL.FILM RESISTOR R8,R13,R18,R25,R28,R35,R45,R47,R60,R61,R

64,R

00567412 RPC05T 104 J MTL.FILM RESISTOR R19,R36,R37,R38,R52 5

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