Boss DS 1 Distortion (1st Ed.) Schematic

Page 1

DEC. 26,1980

( T

5mm; (151-023(4 M U D I F I C A T I 0 I: L D D R. I V E C I R " '1 1 T OUTPUT WAVEFORMES
. , , (input signal: lkHz, sine wave)

mag c/D do mt keep LED lit in 2201a, this will mama Flip-

flop stable at lower supply

ml

1N R

35

EF 'CT mafia The followmg 1?"
inn an LED drive airs1t

for contmuous lignLLng.

L. RerouLe lue lead of mu 1H Q4

colluctor / ,
2. Replace :22, 150 or 0.4'1'
with 0.0mm Mylar capacitflr

vnTtages (ii-(U),

Lower-puwer-consxmpbion LED
ELF-135E :'L s incorporated
with later plDductS t5 cape
with a lessqueut. larger
curzem draw. when changing

llimv ; y:

Input
40am \
(220m my

DS-1

lace am am Cl9,470pF «mi LEDE, change R35 to 19k.

ET5205-510A (7520551000)
(pcb 2291032605 or 052-286E)

45.] .@_' f 5""

.. Serial number wilh 9000
AC ADAPTUH JACK CHANGE - (4
mac-0003. Lo EEC-03177171 for positive ®___., , W :
ConleECTJ'on with plug ; 1,3mz pp,
. 0
Type 17s larger body cannot slip lntl) the HDSHIMI'N
mdujtlng hr: in Lhe case dedicated La 4003 EEC-0003 [4130-0317 44DmV p-p
wllich contra? 13,» can replaCE 4317- 7
_ _ _ . _ - - 09 O O O O ,
x. ' 5
m
{I Q Q
g me n
Input
lN 740:1}315
TS (22w w)
a 200ml 13-!)
. O
E.
T
MW-st
-MNv-R27
IC TAmsF on
m 5 NE a O m
m_ ' _______ (FEW PF)
8? D9 é. 13 a
I~G3 25C73ZTM GR - R
Six 3/ 5 T E 3 W
mm 290 ATM v I l
- _ V ' ' l0 .4
SERIAL NUMBER stamped on case my; t d g
. . g e
Re-cyles when first twc digits are exhau V
5w - 9000 777777 000C - 0300 -