Service manual

– 27 –
CD-BK260V/CD-BK2700V/CD-BK280V
Figure 27 SCHEMATIC DIAGRAM (6/13)
7
8 9 10 11 12
1
2
3
P23 12 - F
TO MAIN PWB
22
21
20
19
18
17
16
15
14
13
12
1110
987654321
24 23 22 21 20
19 18 17 16 15 14 13
121110
98
7
6
5
4
3
2
1
GND(D_GND) GND(A_GND) TUN_SM DI DO CE TUN_R CLK TUN_L A+10V
IF CONT
FM/AM
FM/AM
SD
MO/ST
ST IND MO/ST
VSS
AOUT
AIN
PD
VDD
FM IN
AM IN
DO CL DI CE
X IN
X OUT
IF IN
REG
AM IF IN
GND
SD STEREO FM DET VCC IF OUT PHASE (FM/AM) PHASE
L-CH OUT
R-CH OUT
MPX IN
MPX VCO
FM/AM OUT
VSM
AM LOW CUT
AM RF IN
AM OSC IN
FM AFC
AM OSC OUT
AM MIX OUT
FM IF IN
30 24 22 27 29 26 24 23 25 31
+B
+B
+B
Q360: CONSTANT VOLTAGE
R372 1K
IC302
IC302
LC72131
PLL(TUNER)
C364 2.2/50
IC303
LA1832S
FM IF DET./FM MPX./AM IF
R365
10K
R387
5.6K
C370
1/50
R393
1K
R376
1K
R355
3.3K
R359
1.8K
4
1
C369
27P
C374 0.015
ZD351
DZ5.1BSB
C396
100/10
C395
0.022
R381
10K
X352
4.5 MHz
R363
12K
C363 0.022
R391
270
Q360
KTA1266 GR
R385
5.6K
R392
270
C372
1/50
R364
12K
T351 AM IF
R361
15K
C355
22P
R388
3.9K
C371 1/50
R362
15K
R378 1K
R386
22K
C388
0.001
R356
1K
C368
1/50
C398
100/10
C356 0.001
C357
2.2/50
C358 1/50
CF352
R352
1K
C361 0.022
C362 3.3/50
R
382
150
C353 0.022
C399 0.022
C373 0.015
X351
456 kHz
C397
0.022
8
2
C
H)
C366 0.001
R350
2.7K
R357
470K
R383
5.6K
C391
47/25
R384
5.6K
R375
470
R395
47K
C386
330P
R360
4.7K
R377 47K
L351
100µH
C385
0.01
C380 10/50
R379
2.2K
C393
1/50
R380
1.5K
R373 1K
R374 1K
C387 0.022
C392 0.001
C394 47/25
C352 10/50
C389 0.022
R351 5.6K
C350 0.022
R358
3.9K
4
2
2
2
C365 0.022
C367
1/50
R353
270
CF351
C354 0.022
()
TP302
TP