Crate BX 50a 07S779 Schematics

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Crate BX 50a 07S779 Schematics

Extracted text from Crate BX 50a 07S779 Schematics (Ocr-read)


Page 1

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GAIN A Q 16, SHAPE Q 5. A LEVEL 9 5,
GAIN E 5: MASTER. TONES 8 5. OCTAVE 9 9,
CHANNEL 5 CLEAN. seam INPUT semv DTP

IZDVAC No LOAD

Sofia; S/IIIAFEE fig D.C. SPECIAL CONDITIONS
1 m 200mV i
2 In 150mv i
a ru 3 5v 7 CHANNEL A SELECTED
4 r\_I av - CHANNEL A SELECTED
5 m 1.5v i CHANNEL A SELECTED
s x 21mm -
7 m 450ml 7
a m 7DOmV i
9 1-2- 50on 22v +MV
In mfgsom 12v 7
o 11 1- J .7 sum -
mm 12 m 15v 7
R59 13 m 15v -
14 i i W
15 i i I? Eimitéiitifig
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17 i ,2 RIPPLE 21v
m - ,2 RIPPLE 721v
19 i 7 14V
20 - - 44v
Power Table
Ref Des Devicepre) Package CicND -vs +VS +15v -15v -15vx +15vx
DI 57e72e1_ EDIPJI a 4
D2 3725ee1_H rDAzexxH 5 5
U3 37250@I_H rnAzexxH 3 5
U4 37272e1_ aDIFS s 4
U5 57e72e1_ EDIPJI a 4
D5 37272e1_ aDIFS s 4
D7 57e72e1_ EDIPJI a 4
D5 37272e1_ aDIFS A a
DI2 57413e1_ 14mm 7 IA
0 12.13.00 CONTROL ISsuE
A INITIAL ISsuE D000644
CAUTION: REV Dare DESCRIPTION Ecr(s)/Ecn(s) Chgd By Appvd by Date
THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL. THE INFORMATIONgerggflgggugwfifimwwe IS pnapmmnv To
TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED -
SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND Signatures: Date:
THAT EXPLAINED IN THE OPERATING INSTRUCTIONS.
DEW": --3 5'6'00 11330 Barman Drive, S1. LouIs, MO SSIAS
NOTES: Checked: First Used On:
1) CAUTION: SHOCK HAZARDI! Released. BX50a
THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER '
41513 gHEl SETET'EORWEE §E§F%Y IS DISCHARGED BEFORE Tolerance; DrawIng Size: 0 DrawmgSW A _ BASS AM PLI FIER
2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/4W-5% TOL. Drawing Type: Schematic
CAPACITOR VALUES IN MICROFARADS, SUV-10% TOL. . .
3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE CIass Code: NONE Drawlng Number.
AND 10 MEGOHM DIGITAL VOLTMETER. 07S779-XX
Sheet 1 of 2
A B C D E F

Page 2

A B
D E F
- R02
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RING : R74
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TIP D24
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SLEEVE m R 1
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FLAT CABLE JWOFTQ 5W?
DO NOT INSTALL 4m 0mg
JWOPTZ! MP5 m3
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JWOFTI - A A ,1 R78
USE JWOPT1 ON -5-, 47K -W
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SWITCH
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SLEEVE SPEAKER 1 -F Elm I/2w
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22K R30 -3 3
NOT USED ON 4 7 -0;: DEGND m -a
DASH .02 ASSV 023 UNECORD
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DEGND
BROWN
TO AC ROW-
SWITCH VOLTS _
0 12.15.00 CONTROL ISSUE RLB
GR V/WH
TO AC GR Y/WHT A INITIAL ISSUE D0
CAUTION. SWITCHfiVOLT REV D 00644
_ ate DESCRIPTION E E
TaliiggEMATIC Is PROVIDED FOR USE BY QUALIFIED PERSONNEL. -(5V -(5) 0-9- BY APPV" by We
RISK OF ELECTRIC SHOCK, REFER SERVICIN T THE INFORMATION CONYAINED ON THIS DRAWINu IS PROPRIETA v10
SERVICE PERSONNEL. DO NOT PERFORM ANY SERVIcfiVC%E$éHSIED 1 QQVAC 23®VAC 24®VAC _ 9- Lou's MUSICI INC
THAT EXPLAINED IN THE OPERATING INSTRUCTIONS. 59/ 69H Z 58/ 66 H Z 56/ 68 H Z Signatures: Date:
NOTES' Drawn: RLB 6'6'00 11am Holman We. 51, Lows. Mo 63145 4
-TcH/I-gIJIISJJII-I-- CSEECK HAZARD- TO AC BLUE BLUE Checked: First Used On:
TAINS HAZARDOUS VOLTA E. DI fl '
AND BE SURE POWER SUPPLY IS DISCHAISGED gggfiECT POWER SW-TCH VOLT Released' BXSOa
TOUCHING INTERNAL PARTS. Plot Dale'Mon Dec18 2000 Drawing Size' C Drawing Title'
2) UNLESS NOTED, RESISTOR VALUES IN OHMS 1/T4wL 5% TOL. I I I -
CAPACITOR VALUES IN MICROFARADS 50V- 10%T J9 WH'TE J9 J9 WHITE leTime: Inns Drawing Type: Schematic PWA ' BASS AMPLIFIER
3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE AC 7) AC 7 AC .
AND 10 MEGOHM DIGITAL VOLTMETER. NEUTRAL NEUTRAL > NEUTRfl Tolerance: 0'3- (We: NONE WWW -WW-
A Sheet 2 ol 2 078779-XX
B
C D E F