Teac BX 550 Service Manual

Page 1

23

TEAC®

SERVICE MANUAL

BX-SSO

High Speed DC Integrated Amplifier

BX-330

DC Integrated Amplifier

The BX-SSOB and the BX-JJOB have a black finish; otherwise, they are the some as the BX-55ll and the EX-Ililfl.

CONTENTS
1. Specifications and service data ..................................... 2
2. Voltage conversion ............................................ 3
3. Main parts location ............................................ 4
4. Adjustments ............................................... 5
5. Block and level diagram ......................................... 8
6. Parts location and parts list (BX-550) ................................. 10
7. Parts location and parts list (BX-330) ................................. 18
8. PC boards and parts list (BX-550) ................................... 27
9. PC boards and parts list lBXr330l ................................... 34

CAUTION

APEIIS marked with this sign are safety critical components. They must always he replaced
with identical components < refer to the TEAC Parts List and ensure exact replacement.

Effective: OctobEr, 1980 5704007100

029

Page 25

PARTS LOCATION-7

PTT M3x6 l2 l4 l3 l2 II

Parts marked with *require longer delivery time than regular parts.

REF. N0. PARTS NO. DESCRIPTION F REMARKS

7 - 1 5301202600 Switch, Rotary (Slide type)

7 - 2 5300512300 Switch, Lever; 2 - 3 (NS) Part of 7 - 4

7 ~ 3 '5300512100 Switch, Lever; 4 - 3 (NS) Part of 7 - 4

7 - 4 5200015600 PC3449 Assy, SW [GE, E, UK, A]
520001 5610 PCB-149 Assy, SW (US, C]

7 - 5 5282009302 Var. Res., 300kflIBI Part of 7 - 4

7 < 6 5200015200 PCB-122 Assy, VFI [GE, E, UK, A]
*5200015210 PCB-122 Assy, VR [US. C]

7 - 7 5300511800 Switch, Lever; 2 - 2 Is) Part of 7 - 4

7 - 8 '5150243000 Var. Res., EOkQIB) x 2 Part of 7 -11

7 - 9 5200015800 PCB-131 Assy, LED [GE, E, UK, A]
520001 5810 PCB-131 Assy, LED [US. C]

7 - 10 '5720025200 Seal, Fuse Capacity; 4A 250\/ [US, C, GE]
5720026100 Seal, Fuse Capacity; T2.5A 250V [E, UK, A]

7 - 11 5200014600 PCB-104 Assy, TONE CON AMPL IGE, E, UK, A]
5200014610 PCB-104 Assy, TONE CON AMPL [US, C]

7 - 12 5122165000 Connector Socket, 3P (WHT)

7 - 13 '5122169000 Cénnemor Socket, 7? (WHT)

7 - 14 i5122171000 Connector Socket, 9? (WHT)

[US]: U.S.A. [C]: CANADA [GE]: GENERAL EXPORT [E]:
[A]: AUSTRALIA [L]: LIMITED AREA

EUROPE [UK]: U.K.

25

All screws conform to ISO standards, and have crossrecessed heads, unless otherwise noted.

BX-SSO/BX-330

ASSEMBLING HARDWARE CODING LIST

ISO screws have the head inscribed with a point as in the figure to the right,

FOR EXAMPLE:

EMBXS
.
I
I
1

;,,,,,,-._.. Lenglh in mm (L)

------- Diameter in mm (D)

,1

{+9
'T

L L

J

L____.__.___7A-Nomenc|ature ADI- 4DI
" Inner die. for washers and nuts
Code Name Type Code Name Type
MACsI-ggéw R Round Head Screw @553") TAPESJIEIEW BTA Emmi ::::w(l-\ Tyne) @IIW
P Pan Head Screw @1753 BTB $33!?ng giigwm Type) GIIIIIIIIL
T Stove Head [$525) w RTA TEEQIIIQHggIeM/A Type) @3313
B Bll'ldlrlg Head Screw RTE ngggigHgacIeww nae) @W
F Fm counfiesgngcrew SETSCREW SF [SIZISCSrgSvIEtI-tiat Pomi;
0 0w counI-(Iergldngcrew 9m SC gzIsrigaIIeéup Pom!)
woggREW RW Round ngod Screw W SS glefitstceSevioglgitPomt} @Efl
TApsTclggw PTT Pan $212.19 Screw W WASHER E E-(RElregIamlng Washer @
WT T waShfgpIIfeadScrew W w Ftat Washer(Plam) @
SEIQEREW 35 3E3]? $23M Type) 5 L°°k Wa59'(59"9 @
353 gm? straw Type) LWI LOCI I/InarseIIgT Teeth ®
BSF 2g]? 5::ng Type) @))M LWE LOCk( 1!]?!ng Teen) @
PSA :ErIAgeaSgrewM Type) W TW Trim wfilrIzeurntersunk @
PSB Pa" Head Wm NUT N Hex Nux g;

SEMS Screw(B Type)