Fisher BA-6000 User manual

SERVICE MANUAL
FISHE
BA-6000
Power Amplifier
(EUROPE)
The first name in high fidelity

CONTENTS
Functional Block Diagram ... 0. cece ee eee teen tne eens 6 ok Seatac 2
Specifications 26. 0e ccc get aceite acai ghd dane ato eee ola onal GLSLiLaMy adhe, ee wud Ga dis woe 3
Cabinet & Chassis Exploded View ..........22 2 eee eee er eeee gets ob a Ooo Bees la I 4
Parts teists: 2.2. ah cveentecon det ots otctesec dig abe daaee: areca’ Gat Goer bug atten ag erect We glenerca gore eiahan’ 5
Power AmpP.C.Board 0. oc eee eee eee eee eee e teens 6
Parts: List: ond ic0t Statin 4 a ieiiaiale ee ee ee ee ee 7
CED APC BOatd 2 eec ssc od wea te Sac eete ud ee Send, SG, ae CeO Reon @ Ora ole OUI Ban Sw we Byes eae Gs 8
Input/Meter P.C.Board . 0... ee eet eee teen eee e eens 8
Parts: List? os dre ite edo o wieetie BSS secs yam: 9 ew ww ees Aa ww WOES Je el one bee SES 8
Power Supply P.C.Board 2.0... 2. ee eee eee ete ete ee eee enes 9
SP Select PiC. Board) o.o.c<. sce! isco: oi sra ea leon Bebe) aha ese be eds Bice wl gs ena eh g ea et aoe ew wlele 8 ere wood 9
Parts List 6) ech Fe iscie Rhee erin acde criclna 160% ees arta owed 0S ew aN es Wee i ela ice whe @ Zeal a See tole 9
Adjustment of The Power Amp P.C.Board.. 22... ee ee eee 10
Point to Point Wiring Diagram... 0. ee te ete eee ee eee 11,12
Schematic Diagram .. 0... 0. cc ee eee eee eee ee ee eee e ee neee 13,14
Semiconductor Lead Identification ©... 6... ee te eee ish, og tees 15
Power Amp IC STKO100II Equivalent Circuit 2... 6... ee eens 16
FUNCTIONAL BLOCK DIAGRAM
PEAK L.ED.
ORIVE AMP
PEAK IND.
METER DRIVE AMP
wo
INPUT LEVEL
PROTECTOR
4

SPECIFICATIONS
POWER AMPLIFIER BA-6000
Continuous Power at 1000 Hz (4 ohms) 2x 120W
at 1000 Hz (8 ohms) 2x 120W
20 Hz to 20 kHz (4 ohms) 2x110W
20 Hz to 20 kHz (8 ohms) 2x 100 W
2x 130W
Music Power (4 ohms)
(8 ohms) 2x 130W
Harmonic Distortion
at Rated Power (at 1 kHz, 8 ohms} 0.002 %
1M. Distortion .
at Rated Power (at 1 kHz, 8 ohms) 0.002 %
Meter Range (Switch-over) 0 dB/—20 dB
Subsonic Filter (—10 dB)
Crosstatk
S/N Ratio (DIN)
at Rated Power
50 mW Output > 60 dB
Power Requirements 110/220 V , 50/60 Hz
Power Consumption
at Rated Power (idling) 400 W (30 W)
Dimensions (W x H x D) 440 x 134 x 320 mm
Weight
(approx.)
14.1
kg
,
Because Fisher products are subject to continuous tmprovement, Fisher reserves the right to modify, change. or aftec any desuim or specifications without notice and without ueucrs aay
obligation. Fisher reserves the right to make changes and improvements upon its products without any obligation ty utstall such changes upon any of its products previously manufaciured

CABINET & CHASSIS EXPLODED VIEW

PACKING PARTS LIST
Ref. No. Parts Number
1316 1139 78104
1316 2119 01362
131 6 3009 28760
PARTS LIST
Description
Box Corrugate-EXP
Bag Polyethylene-EXP
Pad (Right, Left)
ACCESSORIES PARTS LIST
Ref. No. Parts Number
131 2 1801 13900
131 6 2719 10801
131 6 2719 11300
1316 4119 79601
131 6 4519 15700
CABINET PARTS LIST
Ref. No. Parts Number
4 131 2 1401 22600
2 131 2 1105 24700
3 131 2 1801 12900
Description
Leg
Bag Fan
Bag Fan
Explanatory Booklet
Guarantee Certificate
Description
Cover
Plate Bottom
Leg
APPEARANCE PARTS LIST
Ref. No. Parts Number
4 131 0 1016 34000
131 0 1016 34001
5 131.0 1001 52600
131 0 1001 52601
6 131.0 1001 53700
131 0 1001 53701
7 131 0 1001 53800
131 0 1001 53801
8 131 2 5205 15300
CHASSIS PARTS LIST
Ref. No. Parts Number
11 131 23101 66500
12 131 2 3101 66600
13 131 2 3101 66700
14 131 2 3101 66800
15 131 2 3101 66900
16 131 2 3101 67000
17 131 2 3101 67100
18 131 2 3101 67200
19 131 2 3101 67300
20 131 2 3101 67400
21 * 13123305 27100
22 * 13123306 30300
23 131 2 3617 17800
24 131 2 3624 13000
25 131 26111 14200
26 131 2 6113 35300
27 131 26201 27400
28 131 2 7104 00500
Description
Panei Decorate Assy (Silver)
Panel Decorate Assy (Black)
Power Switch Knob (Silver)
Power Switch Knob (Black)
Function Knob (Silver)
Function Knob (Black)
Volume Knob (Silver}
Volume Knob (Black)
Cushion
Description
Metal Mount (Power Switch)
Metal Mount (Side)
Metal Mount
Metal Mount (Heat Sink)
Metal Mount (Center)
Metal Mount (Fuse}
Metal Mount (Side Panel)
Metal Mount (Rear Under)
Metal Mount (Heat Sink)
Metal Mount (Rear Upper)
Panel Front
Panel Rear
Metal Mount Transformer
Mount Headphone Jack
Bushing (AC Cord)
Shelter
Plate Heat Sink
Plate Pad Switch
ELECTRICAL PARTS LIST
Ref. No.
30
31
32
33
34°
35
36
37
38
39
Parts Number
4 2312 01020
4 2312 01050
4 2349 20310
4 2349 20380
4 2349 21570
4 2352 00030
4 2359 21021
4 2359 23070
4 2372 00140
4 2372 00680
4 2372 00700
4 2439 20526
4 2512 10120
45112 00470
43
43-1 Eis: 0 1018 00800
43-2 131 0 9905 00600
47
CO1,02
C03,04
05,06
48(CO7)
49(C08)
Cog
50(D01)
51 *
52
53
54
55
56
* * * KOK
46122 00600
4 6122 00620
46122 01120
46122 01130
C2EHRM103A
C2HYDP103A
4 2232 00281
4 2232 00280
C1IHYDZ473A
DOOD-S10VB20
131 0 4001 03620
131 0 4001 03630
131 0 4001 03640
131 0 4001 03650
131 0 4001 03660
131 0 4001 03670
Description
Switch Slide
Switch Power 5P
Fuse 500mA
Fuse 1A,
Fuse 6.3A
Jack Headphone
Fuse Holder
RCA 2P Jack
Terminal GND
SP Terminal
Terminal
Power Cord
Power Transformer
Meter VU Assy
Housing Assy
Movement
Pilot Lamp (8V 200mA)
Pilot Lamp (8V 200mA)
Pilot Lamp (8V 200mA)
Pilot Lamp (8V 200mA)
Metallized Paper 0.01 nF 250V +20;
Ceramic 0.01 nF 500V +100,-0°:
Electrolytic 15000 uFxi 67V
Electrolytic 15000 nFx1 67V
Ceramic 0.047 nF 50V +80,—20°
Bridge Diode, S10VB20
Power Amp P.C.B. Assy
Input/Meter P.C.B. Assy
SP Select P.C.B. Assy
Power Supply P.C.B. Assy
L.E.D. P.C.B. Assy
L.E.D.P.C.B. Assy
*_Not a servie part.

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POWER
AMP
P.C.B.
Assy
131
0
4001
03620
D05,06
20559040
44210
07,08,09,10,11,12
D13,14
20259110
18820
15,16
D17,18
D19
D20,21
22
23
D24,25
D26
D27
28
D29,30
31,32
D33,34
D35
1C01,02
205
5
9040
44210
DJJ-WZ-130
205
5
9040
44210
DNN-RD6.2E
205
5
9040
44210
DNN-RD6.2E
DCC-10D1----NA
DJJ-BZ-250
205
5
9040
44210
DMZ-MZ330--A
206
5
5210
10010
Q01,02
TNN-2SK131-K
Q03,04
203
55251
57079
05,06
,07,08,09,10
Q11,12
TKK-2SB718--C
13,14,15,16,17,18
Q19,20
TKK-2SD758--C
21,22
Q23,24
Q25,26
Q27,28
Q29
30
O31
203
5
6830
43850
203
5
6840
56050
TMM-2SC2259-F
203
5
5000
53660
203
5
7252
27450
PARTS
LIST
Ref.
No.
Parts
Number
Description
—
42329
20170
Relay
LY-2-0
HLL-PTH487A-B
Posistor
L01,02
4
2539
20281
Coil
VRO1,02
4
2222
00240
VR
100-B
CAPACITORS
;
C01,02
CIHCZJ470SPA
Ceramic
47
pF
SOV
+5%
C03,04
CIHRE-474AL
Electrolytic
0.47
uF
50V
05,06
C07,08
ClJRY-105APA
Electrolytic
1pF
63V
C09,10
CIHCYDO80APA
Ceramic
8
pF
SOV
+0.5%
11,12
C13,14
C2HCDKOSOSL
Ceramic
5
pF
500V
+10%
15,16
C17,18
CIHFAJ473A
Mylar
0.047
uF
SOV
+5%
C19,20
CIHRE-105A
Electrolytic
1pF
50V
C21,22
CIHCDD100SL
Ceramic
10
pF
5O0V
+0.5%
C23,24
CIHFAJ153A
Mylar
0.015
”F
SOV
+5%
5
26
7.28
C2YFRK102A
Mylar
0.001
»F
150V
+10%
C31,32
CIHRY-105APA
Electrolytic
1pF
SOV
C3334
CIHFYK473APA
Mylar
0.047
nF
SOV
+10%
_C35,36
CIHFAJIO4A
Mylar
0.1
nF
50V
+5%
C37,38
CIEAEN107A
Electrolytic
100
nF
25V
430%
C39
CIERE-226A
Electrolytic
22uF
25V
C40,41
C2ARE-477A
Electrolytic
470
uF
100V
C42,43
CIHRY-105APA
Electrolytic
1uF
SOV
C4445
C2ZARY-105APA
Electrolytic
1
pF
100V
46,47
SEMICONDUCTORS
001,02
ODJJ-BZ-250
Zener
Diode,
BZ-250
(25V)
03,04
Diode, DS-442
Diode,
1S188FM1
Diode, DS-442
Diode, WZ-130
Diode, DS-442
Diode,
RD-6.2E
Diode, DS-442
Diode,
RD-6.2E
Diode, 10D1
Zener
Diode,
BZ-250
(25V)
Diode, DS-442
Diode,
MZ330A
(30V)
IC,
STK-O100I1
FET
2SK131K,L
TR
2SC1570
GL,
HL
TR
2SB718C,D
TR
2SD758
C,D
TR
2SD438
E,
F
TR
2SB560
E.
F
TR
2SC2259
TR
2S8C536
F,G
TR
2SC2274
E,
F
Ref. No.
RO1,02
RO3,04
RO5,06
RO7,08
RO9,10
R11,12
R13,14
R15,16
17,18
R19,20
21,22
R23,24
25,26
R27 28
29,30
R31,32
R33,34
R35 36
R37 38
R39 ,40
R41 42
_ R43,44
R45 46
R47 48
R49 50
R51,52
R53,54
R55 ,56
R57,58
R59 60
R61,62
R63,64
R65,66
67 68
R69,70
R71,72
R73,74
R75,76
R77,78
79 80
R81 82
R83 84
R85 ,86
R87 88
R89,90
R91 ,92
R93 94
R95 96
R97 98
R99
R100
R101
R102
R103
Parts Number
RESISTORS
R2EDZJ105APA
R2EDZJ473APA
R2EDZJ104APA
R2EDZJ105APA
R2EDZJ473APA
R2EDZJ104APA
R2EDZJ103APA
R2EDZI332APA
R2EDZJ103APA
R2EDZJIO1APA
R2EDZJ470APA
R2EDZJ103APA
R2HZPK561A
R2HZPK471A
R2EDJZ103APA
R2EDZJ563APA
R2HZPK471A
R2EDZJ103APA
R2EDZJS63APA
R3D
XBJ472A
R2HZPK121A
R2EDZJ101APA
R2HZPK121A
R2EDZJ104APA
R2EDJZ273APA
R2EDZJ102APA
R2EDZJ1O1APA
R2EDZJ473APA
R2EDZJ331APA
R2EDZJ473APA
R2ZEDZJ102APA
R2EDZJ273APA
R2EDZJ102APA
4 2212 00070
R2EDZJ104APA
R2EDZJ472APA
R2EDZJ333APA
R2EDZJ102APA
R2ZEDZJ472APA
R2ZEDZJ103APA
R2EDZJ104APA
R3DXBJ4R7A
R3DXBJ100A
R3EXBJ332A
R2EDZJ122APA.
R2EDZJ472APA
R2EDZJ681APA
R2EDZJ104APA
R104,105
RZEDZJ103APA
R106
R3WXBJ102A
R107,108
R2ZHZPK330A
R111
R2EDZJ103APA
Description
Carbon
im
1/4W
+£5%
Carbon
47k
1/4W
+5%
Carbon
100k
1/4W
45%
Carbon
IM
1/4W
+£5%
Carbon
47k
1/4W
+5%
Carbon
100k
1/4W
+5%
Carbon
10k
1/4W
+5%
Carbon
3.3k
1/4W
+5%
Carbon
10k
1/4W
+5%
Carbon
100
1/4W
+5%
Carbon
47
1/4W
£5%
Carbon
10k
1/4W
+5%
Fuse
560
1/2W
+10%
Fuse
470
=1/2W
+10%
Carbon
10k
1/4W
+5%
Carbon
56k
1/4W
+5%
Fuse
470
1/2W
+10%
Carbon
10k
1/4W
+5%
Carbon
56k
1/4W
+5%
Oxide
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+5%
Fuse
120
1/2W
£10%
Carbon
100
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+5%
Fuse
120
1/2W
+£10%
Carbon
100k
1/4W
+5%
Carbon
27k
1/4W
+5%
Carbon
1k
1/4W
45%
Carbon
100
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+5%
Carbon
47k
1/4W
+5%
Carbon
330
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+5%
Carbon
47k
1/4W
+5%
Carbon
-
1k
1/4w
£5
Carbon
27k
1/4w
t5%
Carbon
1k
1/4w
5%
Cemen
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JTW
Carbon
100k
1/4W
£5
%
Carbon
4.7k
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t5%
Carbon
33k
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Carbon
1k
61/4W
£5%
Carbon
4.7k
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£55
Carbon
10k
1/4W
t's
Carbon
100k
1/4w
£55
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4.7
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Oxide
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Oxide
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3.3k
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Carbon
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th
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td.
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Ref.
No.
Parts
Number
Description
131
0
4001
03660
CAPACITORS
Ref.
No.
Parts
Number
Description
C01,02
CIHFAJ683A
Mylar
0.068
uF
SOV
+5%
C0304
CIHRY-105APA
Electrolytic
1uF
SOV
SEMICONDUCTORS
COB08
CIERY-A76APA
Electrolytic
47
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25V
DO1
DOO-SLP-132B8
Diode,
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DO1,02
20559040
44210
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B.
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003,04
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131
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20259110
18820
Diode,
1$188FM1
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(C
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Ref.
No.
Parts
Number
Description
Q01,02
20355000
53660
TR
2SC536
F,G
SEMICONDUCTORS
RESISTORS
DO1
—-
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Diode,
SLP-1328
RO1.02
R2EDZJIO4APA
Carbon
100k
1/4W
+5%
RO3,04
R2EDZJ563APA
Carbon
56k
1/4W
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RO5,06
R2HZPK681A
Fuse
680
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4001
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1.2k
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=
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Pie
R10
R2EDZJ222APA
Carbon
2.2k
1/4W
+5%
Ref.No.
PartsNumber
Description
R11,12
R2EDZJ102APA
Carbon
1k
1/4W
45%
4
2222
01520
VR
100k-Bx2
R13,14
R2EDZJ334APA
Carbon
330k
1/4W
+5%
4
2312
03630
Switch
Rotary
2-3
R15,16
R2EDZJ682APA
Carbon
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1/4W
5%
4
2312
03640
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4-2
R17,18
R2EDZJ104APA
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100k
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t5%
R19,20
R2EDZJ472APA
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4.7k
1/4W
85%
R21,22
R2EDZJ473APA
Carbon
47k
1/4W
+5%
~
R23,24
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Carbon
1k
1/4W
5%
R25,26
R2EDZJ2Z72APA
Carbon
2.7k
1/4W
5%
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Number
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Ref.
No.
Parts
Number
Description
CAPACITORS
4
2312
03650
Switch
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10-4
c01,02
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2232
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1000
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Connect
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to
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terminal
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volume
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fully
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most
stable
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minimum
position.
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VRO1,
02
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until
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output
voltage
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2.
Connect
dummy
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;
SPEAKERS
terminals.
3.
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DC
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(input
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than
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*For
about
two
seconds
after
the
power
switch
is
*If
the
speaker
terminals
are
short-circuited
or
the
turned
on,
the
speakers
remain
silent
because
the
ventilation
holes
at
the
cabinet
top
are
blocked
power
muting
circuit
operates
during
this
time.
during
long
periods.
of
operation,
the
internal
temperature
may
rise
abnormally.
At
about
90
C,
the
thermal
sensor
(temperature
detection)
circuit
becomes
activated
and
will
interrupt
the
signal.
\f
the
cause
is
removed
and
the
internal
temperature
1S
back
to
normal,
the
unit
automatically
resets
itse!f
to
restore
normal
operation.
:
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NOTES:
1
All
resistors
values
are
indicated
1
Hohe
K-10"
-M=10°)
b.
All
voltages
*
10%
with
respect
chassis
ground
c
Na
signals
at
input
terminals
2.
All
capacitors
values
are
indicated
a
“wh”
we104}
San
atarane
psheatent
ob
the
schasmanees
are
measured
under
the
d.
AC
input
at
220
volts
50
Hz
4
This
is
a
fundamental
schematics
diagram.
Some
products
may
4
tact
natice
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SEMICONDUCTOR
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IDENTIFICATION
INTEGRATED CIRCUIT
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TRANSISTORS
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@
2S8C1570
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2SD438
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2S8C2274
@
2SB560