Loewe Q2500B Serviceanleitung Seite 118

1 2
U5A
C7903
470u
R7901 L7901
10k/1% 330u
Z
1 14
2 13 D7902
STPS340U
3 12
4 11 C7902
R7902
100n
3k3/1%
5 10
Y 6 9
7 8 I7931
L4931CDT120
1 3
C7901 C7917
C7937
100u 100u
2u2
X
W
V
L7911
U5
C7911
100n
U
C7910 C7913
470u 100n
9
8
7
6
5
T R7931
4
0R
3
L7932
2
150u
1
U14
C7931
W7916
100n
gr
L7922
S
150u
U25
C7921
100n
C7922
100u
R7922
C7552
0R
100p
R
R7552
1 8
C7551
100n
10k
2 7
C7932
100n
R7558 3 6
1k/1%
4 5 Q7551
STD17NE03LT4
R7561 R7556
D
0R
3k9 C7933
G S
Q
470u
C7562
R7553
100n
10k
L7553
D7554
15u
STPS340U
P
O
N
M
L
W7781
ge
8
7
6
5
4
3
K
2
1
TVO
J
I
W7943
gn
8
7
TXD-TV
6
5
4
H 3 RXD-SERV
2 TXD-SERV
1
Signalboard
G
F
R7696
E
100R
D
R7654
10K
R7789
L7706 2K2
U5A
C7706 C7789
100u 100n
C
B
A
1 2
3 4
A17 1 40 A18 A17 1 40
A16 2 39 A16 2 39
A15 3 38 A21 A15 3 38
A14 4 37 A20 A14 4 37
A13 5 36 A11 A13 5 36
A12 6 35 D7 A12 6 35
A10 7 34 D6 A10 7 34
A9 8 33 D5 A9 8 33
C7936
NWE0 9 32 D4 NWE1 9 32
100n
10 C7331 31 10 C7341 31
/RES /RES
47n 47n
VPP 11 30 VPP 11 30
WP WP
12 29 12 29
A19 13 28 D3 A19 13 28
A8 14 27 D2 A8 14 27
A7 15 26 D1 A7 15 26
A6 16 25 D0 A6 16 25
A5 17 24 NOE A5 17 24
A4 18 23 A4 18 23
A3 19 22 NCE3 A3 19 22
A2 20 21 A1 A2 20 21
B7337 R7337
BWP 10R
R7336 C7337
1k 22p
C7353
220u
D7346
R7346 R7347
LL4148
10R 15R
C7346 R7348
Q7341
R7342
22p 1k D14
BC857W
157
1k
D15 C7073
R7341 158
C7342 47n
1k U3.3
10n
159
160
A1
161
A2
162
A3
163
A4
164
A5
165
A6
166
A7
167
A8
168
A9
169
A10 C7074
170 47n
U3.3
171
172
A11
173
A12
174
A13
175
A14
176
A15
177
A16
178
A17
179
A18
180
A19
181
A20
182
A21 C7076
183 47n
U3.3
184
185
W7471
186
9 10
7 8 TD0
187
5 6 TCK
188
3 4 TRS
1 2 TDI
189
N-TRST
190
JTAG
191
R7457
192
0R
193
194
195
C7151
C7203
R7954
10p U5
196
100n 10k
197
R7203
R7157 198
100R
10k
199
R7204
100R 200
C7206
Q7201
22p 201
Q7156
BC857W
BC847B
202
R7206 R7201 TXD3
TXD-TVO
203
47R 6k8
D7206
204
RXD3
LL4148
C7211
205
22p
RXD-TVO
Q7211
206
R7211
BC847B
100R
207
U3.3
R7222 208
10R R7224
C7224 10R C7052
R7233
R7220 R7223
U5
22p 47n
4k7 0R R7158
10k
R7229 R7231
10k
U5
100k 270R
Q7230
BC857W
C7231 R7230
22p
4k7
I7251D
R7237
74HCT125
100R
12 11 RXD1
R7238 R7236
100R
3k3
Q7235
8 9 TXD1
BC857W
C7239
R7235 I7251C
22p
6k8 74HCT125
R7239
D7239 U5
47R R7244 R7243
LL4148
4k7 4k7
R234 R7241
Q7241
100k 330R
BSV52 14
2 3 U5
I7251A
R7242
680R 74HCT125
D7242 7
R7256
R7240 R7259
LL4148 10k
I7251
4k7
Q7240 74HCT125
4k7
BC857W U5
R7247
R7248 R7246
100R
Q7257
3k3
100R
R7257 BC847B
12k
Q7245 6 5
BC857W
R7249
R7245 I7251B
47R
6k8 74HCT125
C7249 D7249
22p LL4148
W7492
Test
1
2 TxD-Tr PIO00
3 RxD-Tr
PIO20
4
C7111
C7124
5 10p
10p
W7120
SAT
1
C7670
R7670
2
22p
47R SDAT
3
4
SCLT
5 R7660
47R
C7660
R7652 U2.5
22p
47R
C7743
47n
C7654
8n2
C7742
47n
U2.5A
C7714
100n
W7100 C7672 R7714
10p 120R
SAT
C7671
R7671
1
100n
0R
2 Q
3
4 I
R7676
C7676
0R
100n
C7677
10p
3 4
5 6
C7301
47n
1 50 1 50
D0 2 49 D15 C7311 D0 2 49
47n
A18
D1 3 48 D14 D1 3 48
D2 4 47 D13 D2 4 47
A21
D3 5 C7302 46 D12 D3 5 C7312 46
47n 47n
A20
6 45 6 45
A11
D4 7 44 D11 D4 7 44
D15
D5 8 43 D10 D5 8 43
D14
D6 9 42 D9 D6 9 42
D13
D7 10 41 D8 D7 10 41
D12
11 40 11 40
15 36 15 36
16 35 NCAS0 16 35
D11
R/W 17 34 NCAS1 R/W 17 34
D10
NRAS1 18 33 NOE NRAS0 18 33
D9
19 32 A10 19 32
D8
20 31 A9 20 31
NOE
A1 21 30 A8 A1 21 30
A2 22 29 A7 A2 22 29
NCE3
A3 23 28 A6 A3 23 28
A1
A4 24 27 A5 A4 24 27
25 26 25 26
C7313
C7303
47n 47n
R7316
10k
C7072 C7071 C7070 C7069
47n 47n 47n 47n
I7051
STI5500
DEMULTIPLEXER
CONTROLLER
VIDEO/AUDIO-DECODER
C7053
47n
R7111 R7124
10R 10R
R7117
R7133
0R
10k
/RES
D7465
R7465
10k
LL103C
C7465
R7406
2n2
R7486
10k
5k6
R7487 R7402
U5
0R
5k6
C7481
C7482 22p
22p
R7747
0R
R7733
0R
R7748
R7773
0R
0R
R7784
10k
C7737
47n
R7771 R7772
0R
0R
33 16
R7751
1k
34 15
/RES
C7736
R7757
35 47n C7733 14
SCL
47n
0R L7726
36 13
R7756
37 12 C7704
C7703
SDA
100u
100n
I7721 0R
38 C7732 11
47n
39 10 U2.5
STV 299B
AGC
40 9
41 C7731 8
A/D-Wandler
47n
42 Demodulator 7 U2.5
43 Forward-Error- 6 C7761
100n
Correction
44 5
C7729
47n
45 4 U2.5A
46 C7727 3 C7758 C7763
C7726
100n
100n 47n 22p
47 2
C7716
C7722
48 1
X7758
47n 47n
4MHz
Q I
C7759
22p
R7713 R7711
120R 5k6
U5
C7721 R7712
4p7
5k6
5 6
7 8
1
MD0 2
D15
MD1 3
D14
4
D13
MD2 5
D12
MD3 6
7
D11
MD4 8
D10 A12 1 32 NOE
MD5 9
D9 A10 2 31 A11
10
D8 A9 3 30 NCE1
MD6 11
A14 4 29 D7
MD7 12
A15 5 28 D6
13
A18 6 27 D5
R7317
2k2 DQML 14
NCAS0 NWE0 7 C7321 26 D4
47n
WEB 15
NCAS1 8 25 D3
R7318 CASB 16
A19
NOE 9 24
2k2
RASB 17
A10 A17 10 23 D2
CS0 18
A9 A16 11 22 D1
MA11 19
A8 A13 12 21 D0
MA10 20
A7 A8 13 20 A1
MA0 21
A6 A7 14 19 A2
MA1 22
A5 A6 15 18 A3
MA2 23
A5 16 17 A4
MA3 24
25
CLK
R7376
10k
R7377
10k
C7377
100n
SDCLK
C7068
C7067
104
47n
47n
C7066
103
47n
U3.3
102
MD7
101
MD6
100
MD5
99
MD4
98
MD3
97
C7063
96
47n
U3.3
95
MD2
94
MD1
93
MD0
92
DQML
91
WEB
90
CASB
89
RASB
88
C7062
87
47n
U3.3 U3.3
86
CS1
85
CS0
84
MA11
83
MA10
82
MA3
81
MA2
80
MA1
79
MA0
78
77
SDCLK
C7061
76
47n
U3.3
75
MA9
74
MA8
73
MA7
72
MA6
71
MA5
70
MA4
69
C7059
68
47n
U3.3
67
66
R7810
65
R7809 22k
64
24k
C
63
Y
62
C7099
61 47n
VDDA
60 R7849
C7098
59 22u
58
R R7848
57
36k
G
56
B
C7054 C7056
55
47n 47n
C7097
54
47n
VDDA
53
R7143
C7096
10k
22u
L7094
C7747
10p
5 4
R7740
C7748 6 3
0R
7 2
10p
8 1
C7093
47n
R7851
200R
1%
R7992
C7984 C7981
4k7
100n 100n
1 8
2 7
3 6
RES
C7987 4 5
/RES
2u2
C7986
C7992
C7993
1n
1n
1n
C7991
1n
R7534
C7879
47k
4u7
1 8 DVB_L
5 4
2 7
6 3
3 6 C7877
R7877
7 2
4u7
560R
4 5 DVB_R
8 1
R7879
560R
L7861
D7761
C7702
C7701 R7876
C7861 R7878
D1F60 U5
100n 680R
220u 22u
C7862 680R
C7700
L7761
47n
100n
C7876
3n3
R7761
0R
C7535
L7763
3n3
7 8
9 10
C7387
100n
50 1 50
C7371 49 MD15 MD0 2 C7381 49 MD15
100n 100n
48 MD14 MD1 3 48 MD14
47 4 47
46 MD13 MD2 5 46 MD13
C7372 45 MD12 MD3 6 C7382 45 MD12
100n 100n
44 7 44
43 MD11 MD4 8 43 MD11
42 MD10 MD5 9 42 MD10
41 10 41
40 MD9 MD6 11 40 MD9
C7373 39 MD8 MD7 12 C7383 39 MD8
100n 100n
38 13 38
37 DQML 14 37
36 DQMU WEB 15 36 DQMU
C7374 35 SDCLK CASB 16 C7384 35 SDCLK
100n 100n
R7374 R7384
34 RASB 17 34
10k 10k
33 CS1 18 33
32 MA9 MA11 19 32 MA9
31 MA8 MA10 20 31 MA8
30 MA7 MA0 21 30 MA7
29 MA6 MA1 22 29 MA6
28 MA5 MA2 23 28 MA5
C7376 27 MA4 MA3 24 C7386 27 MA4
100n 100n
26 25 26
5 4
R7442
33R
6 3
L7431
U5
7 2
C7433
C7431
8 1 100u
100n
X7436
C7439
13.5MHz
8p2
R7449
3k3
C7449
C7447
100n
100n
L7083
U5
5 4
C7083
C7084
6 3
100n
220u
7 2 C7082
100n
8 1
L7051
3V3
C7086
C7087
100n
220u
L7806
L7808
47u
C7808
C7809 C7806
C7814
100n
3n3 220u 470u
R7816
R7812
8R2
820R
1%
C7812
Q7812
100u
R
BC857B
L7817
2u7
R7817
75R
1%
C7821 C7824
100n 3n3
R7826
R7822
8R2 W7611
820R
1%
C7822
100u Q7822
R
G
BC857W
L7827
2u7
G
B
R7827
75R
1%
C7831 C7834
100n 3n3
R7836
R7832
8R2
820R
1%
C7832
Q7832
100u
BC857W
B
L7837
R7831
2u7
R7833
200R
2k2
1%
C7837 C7838
390p 390p
L7801
47u
C7802
C7854
3n3 220u
C7801
100n
R7856 R7846
12R 12R
Q7852 Q7842
C7852 C7842
BC857W BC857W
C
L7847
100u 100u
L7857 2u7
2u7
C7848
R7843
2k2 390p
C7857 C7858
390p 390p
C7819
10u
W7506
Q7581 bl
Q7580
BC857W
BC847B C 8
R7576 R7577
10k R7585 7
10k
R7580 56R
FBAS/Y 6
100R
R7583 5
R7582
G 150R 4
C7585
100R
10p 3
C7577
100n 2
Y S R7587
D
1
33R
Q7577 R7578
R7536
SN7002 10k
47k
R7586 Q7586
100R BC847B
R7530
6
47k /E
R7589
9
270R
3
R7588
4
5 1k
R7593 C7591
10
33R 10p
1
15
2
Q7592
BC847B
11 R7592
13 100R
14
R7595
12
270R
W7680
I7577
C7526
4053 C7597
R7594
10p
1k 10p
R7531 C7527 C7521
10u
47k 10p
FBAS
C7531 C7524
AFL
3n3
10u
AFR
C7522
R7539 R7533 R7522
10u
12k 47k
15k
R7529
R7527
47k 75R
Benennung: LOEWE.
Q2500
DVB1-Free-TV-
DECODER
Code-Teile-Nr.:
88223.050
erst.: Simon gepr.:
Datum: 10.12. 1 Datum:
9 10
Z
Y
X
W
V
U
T
S
R
Q
P
O
N
sw
1 M
2
3
4
5
6
L
K
J
I
H
G
F
E
D
ws
8
7
6
5
4
C
3
2
1
10.12.01 Ex
B
Index
C A
Peetz