Sony BVW-55 Maintenance Manual page 730

1
2
3
CL2
CN1 (3/4) 3 PB_C_X
CN1 (4/4) 4 PB_C_G
3P L-C_PCM_MUTING
4
4P
H-DO_ADJ
4P H-METAL
4P
C_COS1_CONT
4P H-AGC_ON
5
A B
+5V-32
C DO RF C RF
TP302 TP303
IC302(3/5)
+5V-32
CL302 R314
CXA1479Q
C302 0
0.022uF NM
39 37
RF_AIN ABRFOUT
41 47
C301 R319
RF_BIN CDRFOUT
R303 0.022uF 1k
PB C RF 43 35
75
RF_CIN SWD_RF
TP301 45
R307
RF_DIN
100
48
R301 R320 C309
MODECNT
130 1k 18pF
1
CHANCNT
34
GAINCNT
R302
R313 36
120
100 RF_LEV
GND
R315
C308
0
E301
0.001uF
NM
R311
10k
R323
-5V-32
+5V-33 +5V-32
C389
0.1uF
R324
22k
16
14 VCC 12
R326
COM 0
1k
13
1
11
IC304 (1/3)
SEL
6
TC74HC4053AFT(EL) R325
INH
22k
VEE GND
7 8
-5V-32
C
DM-121 (2/9) DM-121 (2/9)
Q303
2SC4178-F13F14-T1
Q302
2SC4178-F13F14-T1
Q301
2SC4178-F13F14-T1
R321 R328
220 330
DELAY
FL301
R322 R329
3.9k 330
1 2 IC302(4/5)
IN DL OUT
TEST
CXA1479Q
G1 G2 G3 G4 G5
C313
S301
0.022uF
3 4 5 6 7 33 29
2
EQ1AIN EQ1OUT 1
31
3
EQ1BIN
G1
C312 30
0.022uF EQ1CNT
7 6 5 4
R331 R330 R332 R333
1k 4.7k 4.7k 2.2k 75
C314
470pF
4-36 (a) 4-36 (a)
D E
+5V-31 +5V-33
+5V-31 +5V-32 L311
10uH
L312
10uH
C344 C347
0.1uF 33uF
C339 C342 C343 6.3V
33uF 0.1uF 0.1uF
6.3V
IC302(5/5)
CXA1479Q
C319 C322 C325
0.022uF L304 33uF 0.1uF
10uH 6.3V
-5V-31 -5V-32
+5V-32
Q304
R334 2SC4178-F13F14-T1
METAL RF LPF
100
Q306
2SC4178-F13F14-T1
C315 R340 L302 L305 R343
0.022uF 300 6.8uH 6.8uH 100
R336
0
NM R347
470
R338 C317 C320 C323 R342
3.3k 51pF 100pF 51pF 300
C EQ1
C326 C327
180pF 5pF
TP304
L307
470uH
CL304
R346
4.7k
-5V-32
+5V-32
Q305
GND
R335 2SC4178-F13F14-T1
E302
470
OXIDE RF LPF
Q307
2SC4178-F13F14-T1
C316 R341 L303 L306 R345
0.022uF 300 8.2uH 8.2uH 100
R337
1k
R349
100
R339 C318 C321 C324 R344
3.3k 62pF 130pF 62pF 300
R348
4.7k
-5V-32
F
Q312
2SC4178-F13F14-T1
Q309 Q310 Q314
2SC4178-F13F14-T1 2SA1610-T1Y33 2SA1610-T1Y33
R354 R360 R363 R367 R375 R379
220 220 4.7k 220 220 4.7k
C332 C337
0.022uF 0.022uF
R355 R368
470 510
L310 L313
8.2uH 8.2uH C345
0.022uF
R364
100
C334 C340
RV301 110pF RV302 33pF
1k 1k
R361 R377
2 100 2 100
3 1 3 1
C328
56pF
NM CM EQ1 CM EQ2
R356 R369
390 390
L308
470uH
C330 C335
0.022uF 0.022uF
R357 R370
470 470
C346
RV301;C METAL RF PHASE EQ #1 RV302;C METAL RF PHASE EQ #2
0.022uF
Q313
2SC4178-F13F14-T1
Q308 Q311 Q315
2SC4178-F13F14-T1 2SA1610-T1Y33 2SA1610-T1Y33
R350 R358 R365 R371 R376 R380
220 220 4.7k 220 220 4.7k R381
10k
C331 C338
0.022uF 0.022uF
R351 R372
510 510
L309 L314
8.2uH 8.2uH
R366
CO EQ1 100 CO EQ2
C333 C341
RV303 150pF RV304 56pF
1k 1k
R362 R378
2 100 2 100
3 1 3 1
R359
R352 R373
0
430 360
NM
C329 C336
0.022uF 0.022uF
R353 R374
470 470
RV303;C OXIDE RF PHASE EQ #1 RV304;C OXIDE RF PHASE EQ #2
BVW-55
G H