Sony BVM-14M4DE Maintenance Manual page 14

• A BOARD (7/10) (SYSTEM SW, CHROMA DEMOD, PAL U/V, ACC OFF GAIN CONT, AMP) DIAGRAM
• Refer to Printed Wiring Board
1 • Refer to page 4-42 (O/M M : 9-922-666-01) for Respective Voltage Ratings
• Refer to page 4-42, 43 (O/M M : 9-922-666-01) for Waveforms
• Refer to page 4-45 (O/M M : 9-922-666-01) for IC Block Diagrams
2
3
4
5
A B
5V
(1/10) 52.PAL-H
(1/10) 53.PAL/NT
(3/10) 54.U-PAL OPE
Q300
2SD601A
PHASE SHIFT
Q302
2SA1162-G
BUFF
1.9
R373
560
:RN-CP
(3/10) 55.HUE DAC
(3/10) 56.BGP.W DAC
(3/10) 57.COL DAC
12V
(3/10) 58.ACC OFF
(3/10) 59.X TAL OPE
(2/10) 60.HUE
(1/10) 83.OSD-BLK
1 2
R361
47
:CHIP
– 25 –
C D
A A
12V
R1350
10k
:CHIP
R1347
10k
5V
:CHIP
R1314
22k
:CHIP R1349
R1316 270
R1308 4.7k C376 :CHIP
R1313
D300
560 L308 C354 :CHIP 0.47
100k
1SV232
:RN-CP 4.7µH 150p
:CHIP
:FLR50 CH:CHIP PHASE ADJ
*
R1336
C374
82k
IC305 :CHIP
M51279FP
R1319
33k CHROMA-DEMOD
* 0.3 3.0
:CHIP
R1306 R1312
* 32 31 30
560 120
:RN-CP :CHIP
0 0
SYNC SEPA
Q448
DTC144EKA
SYSTEM SW
R393 BURST GATE
2.6
10k PULSE DEN
24
:CHIP
R1318
47k
1 2 3
:CHIP
* 1.8 2.2
R388 R1329
R2309
390 180k
R395 1k R3337
R389 :CHIP :CHIP
120k
1k :CHIP
820
:CHIP
:RN-CP
:RN-CP
R1331
C365
C357
15k
0.001
0.01
:RN-CP 100V
F:CHIP
:PT
R380
4.7k
:CHIP
16 15 14 13 12 11 10 9
2.5
HL
L
HL H
1 2 3 4 5 6 7 8
R374 IC304
680 BU4053BCF-T1 2.8
:RN-CP R2311
SYSTEM-SW2
10k
2.2
:CHIP
R1330
22k
:CHIP
R1332
6.8k C352
0.01
:RN-CP
F:CHIP
Q359
2SB709A
R3386
2.2
ACC ON SW 2.2k
1.6 :CHIP
R3385
0.3
2.2k
2.2
:CHIP *
Q358
2SD601A
ACC OFF SW
C1387
0.01
F:CHIP
R390
10
1/4W
:FPRD
12V
Q301
2SD601A SYNC-CHIP-CLAMP1
R335
Q308
3 4 5 6 7 8
27k R350
8.6 2SD601A 1.5
C328 :CHIP 33k
CLAMP-REF
0.01 :CHIP
Q305
F:CHIP
2SD601A R342
4.7k
CLAMP-BUFF-1
R331
:CHIP
C315 68k
*
CP302 PAL U/V 10 :CHIP 0.9 C316
47
R336
R325 25V 4.7k
*
330 :CHIP
*
:CHIP Q309
R320 2SB709A
2.2k R328
CLAMP-BUFF-2
:CHIP 1M
SYNC
C311 :CHIP
0.2
0.047
25V
*
R307 B:CHIP
Q307 *
560k
*
:CHIP 2SD601A
R314
SYNC-CHIP-CLAMP2
120k
:CHIP
R316
1k
:CHIP
C305
R315 2SB709A
220p
120k SLICER2
CH:CHIP
:CHIP
D301
MA111
CLAMP
SYSTEM SW,CHROMA DEMOD
(7/10)
PAL U/V,ACC OFF GAIN CONT,AMP
E
R1361
R1366 D309
470k C387
22k Q324
0.001 MA111
JR302 :CHIP R1394
:CHIP C R354
:CHIP DTC144EKA
0 B/W SW 470
R-Y 1.2M
PAL SW :CHIP
:CHIP R1371
D307 :CHIP
470k :CHIP
MA111 B/W SW
Q321
R1382
2SD601A
CH:CHIP
10k
B/W-SW2 :CHIP
C377 C378
R1370
0.047 0.047
220k
25V 25V
26 :CHIP 28
B:CHIP B:CHIP C380
C379
C381
R1354 1000
0.01 0.01
27
1 47k F:CHIP 16V
F:CHIP
:CHIP
CH:CHIP
2.9 4.7 4.9 2.8 * * 2.9
2.1 2.1
29 28 27 26 25 24 23 22 21 20 19 18 17
BLK IQKILLER R-Y B-Y PAL /NT VCC NC
IN FILT DEMOD DEMOD
25
FF TINF
COMT
COL OR
CONT ACC V REF APC VXO GND NC
B-Y
4 5 6 7 8 9 10 11 12 13 14 15 16
* 2.9 2.9 * 3.0 2.9 2.7 * 3.3 2.9
R1363 C358
470k
0.01
R1353
:CHIP F:CHIP
C366 4.7k
0.01 :CHIP
F:CHIP R1369 C362 C364
C367 1.2k 0.01 0.01
0.01 :CHIP F:CHIP F:CHIP
F:CHIP
C355 C359
C360 C361 C363
47
1 C356 0.01 0.01 18p
C
25V 4.7 B:CHIP F:CHIP CH:CHIP
C
R1359
120k :CHIP
R1346
100k
:CHIP
R1374
R1345
R1365 C353 150k
330k
:CHIP
2.7M 0.1
:CHIP
:CHIP F:CHIP 2SK94-T1X2X3X4
D311
3.58 SW
C349 C350
R1356 1SV230
220k 0.001 0.001
:CHIP XTAL ADJ :CHIP
:CHIP
R397
R1357
R3338
150k 470k R1304
180k 2.2
:CHIP :CHIP 39k
:CHIP
:CHIP
R399
R398 390k
220k :CHIP
R3383 :CHIP
8 7 6 5
6.8k
R376
:CHIP 390k
R3382 :CHIP
560
C1384 :RN-CP
0.1 C343
2.2
Q328
F:CHIP 0.01
2SK94-T1X2X3X4
F:CHIP
***
3.0 4.43 SW
C1385 R382 R378
1 2 3 4
0.01 150k 510k
F:CHIP :CHIP :CHIP
*
1.7
IC301
C1388
Q323
R3384 C1386 CXA1211M 12p
1.1
DTC144EKA
3.9k 0.01 ACC OFF CH:CHIP
*
PAL SW
:CHIP F:CHIP R3381
GAIN-CONT,AMP
470 :CHIP
R366
4.7k :CHIP
D305
1SS226 PROTECT2
12V D310
C318
1S2836
10 R346 R330
R345 CLAMP
3.9k 2.2k 47k
:CHIP :CHIP :CHIP
Q312
2SD601A R329
1.8k
R334 AMP-1
68k :CHIP
*
:CHIP C314
82p
1.8
CH:CHIP R332
100k
Q313
:CHIP
* *
2SB709A
1.2
AMP-2 R333
R324 100k
L300
150k R321 R322 :CHIP
47µH *
:CHIP 1.2k 270 C312
:FLR50
:CHIP :CHIP 2.2 R318
* *
1k
:CHIP
1.3
C310
C306
Q318 0.1
0.01
Q315 2SB709A 25V
F:CHIP
R317
2SB709A SYNC-SEP B:CHIP
2.2k
BUFF
:CHIP
Q311
SYNC
R308
C313 R323
4.7k
0.0015 330k
:CHIP
:CHIP
:CHIP
– 26 –
F G
5V
R2300
R2301
R386
4.7k 4.7k B-Y
56k :CHIP
:CHIP
:CHIP
C390
47p
R-Y
L311
10µH
:FLR50 Q330
2SB709A
R-Y-BUFF1
C384
82p
D308
MA111
SW
C382
47p
CH:CHIP Q331
2SB709A
R1392
B-Y-BUFF1
470
:CHIP
L309
10µH C375
:FLR50 220p
CH:CHIP
R3333
470k
:CHIP
Q329
R1399
10k
X301 :CHIP
3.58MHz
2.2
R394
27k *
:CHIP
*
*
Q332
DTC144EKA
X300 3.58 SW
4.43MHz
R387
150
2.2
:CHIP
* R381 C340
39k 0.01
:CHIP F:CHP
L305
2.2µH
:CHIP
A-65
A-66
A-67
A-68
A-69
A-70
5V 12V
R351
R357
3.3k
1M
:CHIP
:CHIP
R349
C325 62k
10 :RN-CP
4.9 *
*
A-71
8 7 6 5
VCC
GND
1 2 3 4
*
2.9 2.9
R312
IC302
R311 R313
10k
LM358DR
1.8k 750
:CHIP
:CHIP :RN-CP PAL-60-ID2
C304
0.1
25V
B:CHIP
CONP-SYNC
B-SS9536<U/C>-AICAD09-P7
H