Loewe Q 4000 Serviceanleitung

1 2
R0478
33k
I
UNF+
2
4 I0474
TDA2030
L
1
L0479
Typ-Var.
UNF-
B0471
H
Stereoendstufe
Final stage stereo
W0471
gn
Etage final stereo
Stadio finale stereo
R B0472
R0488
L0489 33k
W0481
ge
Typ-Var. UNF+
2
G
4 I0484
TDA2030
1
UNF-
F
Netzteil
Power supply
Bloc secteur
Sezione rete
R0621
56k/1W
R0626
R0618
56k/1W
10R
E
6
C0623
2E R0627
7 8
10k
220n
R0623
3
4k7
C0629
I0611
TDA4605-3
15n P0633
1k
D0636
R0631 R0633
1
1k 3k3
1N4148
D
2 4
5
D0630 2D
R0630
1D
10R
1N4148
R0624 BUZ91
Q0624
120R
C
R0613
W0611 1R5/7W
Netz in
T0612
2
1
F0611
T3.15A
D0613
B an Bedienteil B250C3200
to Control unit
a Bloc de commande 2x18m
su Unita di comando
R0619
PTC
W0619
Entmag.
C0619
2
100n
1
an Entmagnetisierung
to Degaussing
A
a Desaimantation
su Demagnetizzazione
Netzspannungs-Potential
Supply voltage potential
Potentiel de tension secteur
Potentiale della tension rete
1 2
Schaltbild Basic Board 396-86907G.050-059/062-066 Schematic diagram Basic Board 396-86907G.050-059/062-066
3 4 5
an,to,a,su Signal-Board W1971
1 2 3 4 5 6 7 8 9 10 11 12 13
U12
U5
C0472
R0473
1k
22µ
Q0498
R0498
2SC3311
1k
C0476
R0471
470R
1µ
UNF+ UNF+
UNF- UNF-
C0482
R0483
1k
22µ
Q0496 R0496
2SC3311 W0650
1k
bl
W0660
*
1
C0486 2 1
R0481
3 2
U29 U29
470R
1µ
4 3
5 4
an,to,a,su
W5201 SAT
D0491
R0491
MA167TA5
10R
D0651
L0650 L0651
UB
150µ
T0639 BYW96-D
C0650
18
470p
D0622
2
D0656
1N4148
U29
BY398
R0629
C0656
17
I0691 U10
47R
L78S10
F0656
680p
T1.25A
1 3
IN OUT
GND
1
D0661
15
F0661
BYW98
T2.5A
L0626
6
16
D0671
MA750
13
F0671
T6.3A
C0638
C0682
33n
14
330p
D0681
9
11
C0618 F0681
BA157
T630mA
D0686 L0686
330µ
12
T0618 UNF+
R0686
BY398
0R1
D0687
Q0682
BD536
R0687 BY398
2x18m
0R1
L0687
10
Q0681
UNF-
2SA1309ATA
W-TRAFO R0684
10k
R0683
470R
R0639
10M
Vert.-Ablenkung
Vert. deflection
Deflexion vert.
Deflessione vert.
Geräte-Potential (erdfrei)
Set potential (off ground)
Potentiel d' appareils (sans mise a la terre)
Potentiale della apparecchio
3 4 5
6 7
an,to,a,su Signal-Board W1701
1 2 3 4 5 6 7 8 9 10 11 12 13
UB
Hyperband-Tuner
Hyperband tuner
Tuner de hyperbande
Tuner di iperbanda
L0204
6H 7H U12
47µ
/ON
Hor. Endstufe
U29
Hor. final stage
Etage final horiz.
Stadio finale orriz.
R0697
D0532
56R
BA157
T0528
C0521 8F Q0534
R0532
Tr
2SC4542
Typ-Var.
100µ
D0527
7F
EU02
C0528
680p
Q0526
2SC3944
8E
U29
C0581
L0581
U29
R0698
C0596 22µ
100µ
3k3 C0594
4n7
100n
D0590
2
BA157
U12
R0593
I0594 4
L165
1R5
R0585
1
U5
4k7
O/W-Korrektur
U5
E/W-correction
Correction E/W
Correzione E/W
VPROT
V-
7C
R0566
V+ 8C
82k
R0563
VFLB
470R
D0568 C0563
6B
Br. 220µ
7B
2
UV+
FLYBACK
GENERATOR
R0682
33R
4 I0561
UV-
TDA8177
C0578
7A
1n
R0579
40k2 Typ-Var.
6 7
8 9 10
an,to,a,su Signal-Board W1003
1 2 3 4 5 6 7 8 9 10 11 12 13
U10
R0206
22k/5W
U12
U5 U5
an,to,a,su
C0204
W5181 SAT
100n
C0203
220µ
B0006
U201
Tuner 260-86984.050:
(Basic Board 050,052,054,056,058,064)
Tuner 260-86984.052:
(Basic Board 066)
Tuner 260-86974.050/051:
(Basic Board 051,053,055,057,059,065)
10G
8G
R0537 T0531
12
Br.
R0536
29KV
R0551
Br.
1k8
W0549
sw
FOCUS
2
1
UG2
an,to,a,su
W3152 CRT-PCB
13
C0531
R0546
11 8
Typ-Var.
560n
R0549
Typ-Var.
D0547
2
C0538
R0547
RU2M
4R7
Typ-Var. C0547
3
L0553 100p
4
Typ-Var.
D0558
9
UV-
R0558
BA159
1R5
C0556
100p
8D
6
C0557
NS
100p
D0557
10
UV+
R0557 BA159
1R5
L0538
Typ-Var.
D0652
BA159
W0534
Hor.
L0541
1
UB Hor.
lin 2
R0541
3
1k5 4
R0572
U5
10k
Ablenk-
einheit
Vert.
W0569
1
2
rt
Benennung:
Q4000
= Primär GND
Basic-Board
Basic board
= Analog GND
Platine de fondation
Piastra di fondazione
= NF GND
R0574 Variante:
alle Varianten
Code-Teile-Nr. Lpl.:
524/390-86907
* = nicht bestueckt
21.7.97
8 9 10
Variantenbestückung 390-86907G
Var.1:050 29Z./8MHz-BG
051 29Z./8MHz-M/NICAM-L
062 29Z./SAT-V
Var.2:052 28Z./8MHz-BG/16:9
053 28Z./8MHz-M/NICAM-L/16:9
Var.3:054 28Z./8MHz-BG
055 28Z./8MHz-M/NICAM-L
Var.4:056 24Z./8MHz-BG
W0250
057 24Z./8MHz-M/NICAM-L
bl
I
8 Var.5:058 21Z./8MHz-BG
SAT
7
059 21Z./8MHz-M/NICAM-L
6
SCL3
5 Var.6:063 28Z./SAT-V/1mA
SDA'
4
SCL2 064 28Z./8MHz-BG/1mA
3
Var.7:065 28Z./8MHz-M/NICAM-L/16:9/DOLBY
2
1
066 28Z./8MHz-BG/16:9/DOLBY
Varianten-Tabelle: 86907g 17.7.1997
Pos. Var. 1 Var. 2 Var. 3 Var. 4 Var. 5 Var. 6 Var. 7
H
C0478 2n2 2n2 2n2 2n2 2n2 2n2 2n2
C0488 2n2 2n2 2n2 2n2 2n2 2n2 2n2
C0534 820p 820p 1n2 1n2 1n2 1n2 820p
C0536 11n 11n 10n 8n8 4n7 10n 11n
C0537 22n 22n 22n 22n 10n 22n 22n
C0538 600n 520n 520n 470n 520n 520n 520n
C0541 900n 900n 900n 900n 600n 900n 900n
L0479 Jump. Jump. Jump. Jump. Jump. Jump. 3µ8
G
L0489 Jump. Jump. Jump. Jump. Jump. Jump. 3µ8
L0538 200µ 200µ 200µ 200µ 510µ 200µ 200µ
L0553 27µ 27µ 30µ 30µ 27µ 30µ 27µ
R0532 0R68 0R68 0R68 0R68 3R9 0R68 0R68
R0546 4M7 4M7 4M7 4M7 * * 4M7
R0549 150k 150k 150k 150k 220k 220k 150k
R0574 0R56 0R82 0R56 0R56 1R2 0R56 0R82
F
Oszillogramme Oscillogrammes
Oscillograms Oscillogrammi
0 0
2V/Div DC; 1 D 10V/Div DC; 7 F
5 us/Div 10 us/Div
E
W0548
rt
UVID
4
0 0
UF 3
100V/Div DC; 2 D 500mV/Div DC; 7 H
2
5 us/Div 10 us/Div
1
an,to,a,su
W3301 CRT-PCB
0
D 0
2 E
500mV/Div DC; 500mV/Div DC; 8 C
5 us/Div 5 ms/Div
0
0
5V/Div DC; 6 B 5V/Div DC; 8 D
2 ms/Div 5 ms/Div
C
0 0
500mV/Div DC; 6 H 50V/Div DC; 8 E
5 ms/Div 5 us/Div
0
0
B
7 A
500mV/Div DC; 2V/Div DC 8 F
2 ms/Div 5 us/Div
LOEWE.
0 0
10V/Div DC;
7 B 200V/Div DC 8 G
2 ms/Div 10 us/Div
Index A
g
0
0
500mV/Div DC; 10V/Div DC 1 0 G
7 C
2 ms/Div 20 us/Div