Nf-Teil - Grundig OVATION CDS 7000 SPCD Service Manual

GRUNDIG Service
NF-Teil / AF-Section
R259
L253
22
3T5
R256
C256
270
PH251A
10n
L252
3T5
Headphone
R253
10n
270
S251B C257
7
6
L251
5
4
R258
9 8 3T5
22
HP SW
C290
470n
C284
470n
R287
R273
470K
470K
R274
1K
to CN703
p.3-9
R289
15K
TO CD SECTION
CN207
SC
1
SI
2
PW GND
3
PW ON
4
BL B+
5
8V
TO MCU
6
to CN806
MUTE
7
p.3-11
BUZZER
8
RA PW
9
CD PW
10
USB PW
11
CN211
1 L CH
1
2
2
3
3
R CH
JP201
4
4
0
5
5
CN251
R265
2K7
C275
220P
R266
CN205
68K
R CH
1
SIG GND
C277
2
L CH 220P
3
R267
68K
C276
2K7
R268
1u/S
C278
R269
1u/S
8K2
C279
1u/S
R270
8K2
L
3
to CN291 G
C281
2
p.3-18 1u/S
R
1
CN209
R271
10K
R272
CN206
10K
R CH
4
TO RADIO
GND
3
to CN501
L CH
2
p.3-20
RA Vcc
1
24
BD3871FS
R286
39K
0dB
~
–87dB
–•
Vcc/2
1
15K
R257
C252
100u
C256
PT2308L
IC202
C254
C257
100u
R254
15K
C272
IC205
2u2/S
1 24
VI1 CAP
C273
2n2(M)
2 23
VI2 TNF1
2u2/S
C262
2n2(M)
3 22
SEL2 TNF2
10K
C263
4 21
SEL1 BNF2
C274
R262
1u/S
330K
5 20
A1 BOUT2
C265
6 19
A2 BNF1
R264
7 18
B1 BOUT1 330K
8 17
B2 OUT1
C280
C267
1u/S
10u/S
9 16
C1 OUT2
10 15
C2 VCC
11 14
FILTER SI
12 13
GND SC
BD3871FS
JP210 JP211
0 0
C282
C283
100u/S
100n
23 22 21 20
Bass 2
T r e b l e 1
T r e b l e 2
=80Hz
f c = 8 k H z f c = 8 k H z
f
0
Vcc/2
50k
2 3 4 5
3 - 
OVATION CDS 7000 SPCD
R251
22K
22K
R252
100u
C250
R235
C260
u33/S
C261
R236
3K9
R261
5K6
100n
C253
4u7/S
C264
100n
R263
5K6
100n
C266
100n
Rch
C268
10u/S
Lch
R247
C237
47u/S
C269
220u/S R260
510
R238
JP205
C270
22K
100n
10mm
JP212
0
19 18 17 16 15
Bass 1
=80Hz
f
0
Vcc/2
50k 50k 50k 50k
50k
6 7 8 9
10
L-CH
GND
R-CH
MUTE
V+
C225 C224
3K9
22n(M)J 22n(M)J
C255
R224
R223 C
22K 1% 82K 1% 2
4u7/S
R276
3K3
R233
82K 1%
R234
22n(M)J
22K 1%
C234 C233
22n(M)J
R232
2K2 1%
R244
15K 1%
C235
22n(M)J
39n(M)
R
C247
C246
1
15n(M)J
R277
3K3
R248
10K
10K
R245
22K 1%
R
R237
22K
R29
C291 10 o
470u/S 16V
14 13
Logic
Vcc/2
Vcc/2
BD3871FS
11 12