Sony DVW-A500P Maintenance Manual page 83

7
TP105
Y DMRF
Q142 Q143,Q144 MMV1
RF 4
LPF FREQ
SWITCH
5 LIM
DUB
H;Y PB MMV2
Q145-Q147 RV502 V/I
RF CONV
Y DEM BAL
SWITCH
30 3
Lot(b)ONLY Q518
SELECTED SPEED
IC105
STARTER
BAL MOD 1
CTL
IC513
H;Y FAST SEARCH
P.ON PULSE
TP202 GEN
RV203
SRC SEL
Y DO DC1
16
IC101
14 15 13 12
BAL
16 SW
MOD
DC
SHIFT
TP201 Lot(b)
11
Y STILL DO
Lot(c)(d)
Q214
Lot(b)ONLY
REF
Lot(c)(d);pin15 is grounded
VOLT
IC303
BAL MOD 1
CTL
RV403
C DO DC1
H;METAL/L;OXIDE
IC301
15 13 12
14
BAL
16 SW
MOD
DC
SHIFT
Lot(b)
11
C STILL DO
Lot(c)(d)
Q403
REF
VOLT
Q517
STARTER
13
3
TP305
C DMRF
MMV1
4
LPF FREQ
5 LIM
DUB
MMV2
RV702 V/I
TP500
C DEM BAL CONV
SPEED
30
SELECTED SPEED
SELECTED SPEED
Lot(b)(c)
L;-1~+3 TIMES
TP700
H;-1~+3 TIMES
Q501 IC507
2
4
1 L; VIDEO MUTE
IC511
L;Y DO
1
4
2
IC705
2
4
IC518
1 L;C MUTE
1 L;C DO
4
2
DVW-A500/A500P
DVW-A510/A510P
DVW-CA510/CA510P
8
TP501 2FC ELIMINATE
LPF
YDM
FL502,Q504,Q505
IC501 OXIDE
LPF
FL501
FIX
Q502,Q503 24
DEEM
16 METAL 22
SHAPER LPF
VD I/F (PAL ONLY)
VAR DEEM
Q528(Lot(c)(d)
15 SEARCH 20
LPF
13
27 7 8
H;METAL/L;OXIDE
RV501
(PAL ONLY)
Y DEEM
H;+18 TIMES
H;-1~+3 TIMES
L;VIDEO MUTE
LPF
TP206 TP205 TP207 RV204
Lot(b)ONLY
Y DO AOR Y DO REF Y DO TH Y DO DC2
Lot(c)(d);pin5 is grounded
LPF
5 3 9 6 2 10 TP204
Y DO PLS
DO 8
AOR TH
DET
CTL
Lot(d) Lot(c)ONLY
4 7
Q210 IC110
Q210
H;SEARCH DC(O) ATT 2 1
ATT
Y STILL DO
PAL ONLY
Q215
(PAL) H;SEARCH TUNE 3M
H;SEARCH DO(M) ATT 4
(NTSC) H;+18 TIMES
Y DO THRESHOLD L;NOISELESS PB
LPF
TP406 TP405 TP407
RV404
Lot(b)ONLY
C DO AOR C DO REF C DO TH C DO DC2
Lot(c)(d);pin5 is grounded
LPF
5 3 9 6 2 10 TP404
C DO PLS
DO 8
AOR TH
DET
CTL
Lot(d) Lot(c)(d)
4 7
IC315 IC312
L;NOISELESS PB
1 2 2 1
C STILL DO
IC305
1,2 3
4 4
L;NOISELESS PB
14
TP701 2FC ELIMINATE
C DO THRESHOLD
LPF
C DM
Lot(b)(c)
FL702,Q703,Q704
IC701
OXIDE
LPF
FIX
DEEM
FL701,Q701,Q702
SHAPER 16 METAL
LPF
VD I/F
VAR DEEM (PAL ONLY)
15
13
H;METAL/L;OXIDE
(PAL ONLY)
27 7 8
RV701
C DEEM
H;-1~+3 TIMES
L;C MUTE
DM-89 DM-89
CLAMP
RV503
FL503,
YM LEV
Q509,Q511
IC503 METAL
LPF
2 6 RV504
FL504,
AMP
YO LEV
Q510,Q512
IC501
REF OXIDE
9
LPF
TP502
VOL
H;METAL/L;OXIDE
Y PRE
COMP
S/H
Q525,Q526
18
BUFF 4
TP503
Q506
Y CLAMP
IC512,Q508
Q507
23 21
CLAMP
MIX ERROR
DET
L;Y DO
TP203
Lot(c)(d)
17
Lot(b);Through Y ENVE
IC210(Lot(c)(d))
IC105(Lot(b))
IC210,104,Q213
AMP
VCA
Y AGC
RV205
CONTROL
Y ENVE
ADV Y SW PLS
L;C DO
TP403
Lot(c)(d)
18
Lot(b);Through C ENVE
IC401(Lot(c)(d))
IC303(Lot(b))
IC401,402,Q410
AMP
VCA
C AGC
RV405
CONTROL
C ENVE (PAL ONLY)
ADV C SW PLS RV703
CLAMP
FL703,
CM LEV
Q713,Q715
TP702 METAL
C PRE IC703 LPF
IC701 Q705-Q709
24 4
18 2 2 6 RV704
FL704,
22 INV AMP 2
CO LEV
Q714,Q716
REF
23 OXIDE
LPF
VOL
H;METAL/L;OXIDE
COMP (PAL ONLY)
S/H
4
Q710,
IC710,Q712
Q711
CLAMP
MIX ERROR
DET
TP703
C CLAMP
This block diagram corresponds to the production lots
of Lot No.305 and higher.
Circuit sections that any midway change occured are
shown using the abbreviation mentioned below.
abbrev.
Lot(b)
Lot(c)
Lot(d) 503-
3-35 3-35
Y NON-LIN DEEMPHASIS
10 11
TP504 13 14
TP505
IC514 Y MAIN
Y NLDE
x2 DRV1
IC509,Q513-Q516
4
13 9
2
NOISE
11
CANCELLER
6 16
H;METAL/L;OXIDE
(PAL ONLY)
8 (NTSC:THROUGH)
Q524
Lot(c)(d)
L;Y PCM MUTE
Lot(c)
IC114
IC112
IC113
1
3 1 4
2 4 2
H;-1 +3TIMES ~ 2
Lot(d) Lot(b)
IC112
IC113
DOP
2 4
STRETCH
Lot(b)
Lot(c)(d)
IC112
IC112
12,13 11 4
6
5
FM CARRIER ALLOCATION
PAL
Y RF ENV
METAL OXIDE
Y SYNC TIP (MHz) 7.44 4.82
Y PEDESTAL (MHz) 8.10 5.47
+5V
Y WHITE PEAK (MHz) 9.63 7.00
REFERENCE SIGNAL IS
100% WHITE SIGNAL.
S501
NON-LIN Lot(c)(d)
Lot(b);Through
OFF ON
L;C PCM MUTE
IC309
IC304 1
1,2 DOP 4 2
STRETCH
C RF ENV
C NON-LIN DEEMPHASIS
TP704
13 14
TP705
IC711 C MAIN
C NLDE
x2 DRV1 Q717-Q720,
13 9 IC707
NOISE
11
CANCELLER
6 16
H;METAL/L;OXIDE
(PAL ONLY)
8
Q725
FM CARRIER ALLOCATION
PAL
METAL OXIDE
C REF SYNC TIP (MHz) 7.99 6.24
C PEDESTAL (MHz) 6.68 4.93
C HIGH PEAK (MHz) 5.95 4.20
C LOW PEAK (MHz) 7.41 5.65
Betacam PB Demodulator
DM-89
DVW-A500/A500P
Lot No. Board No.
DVW-A510/A510P
305-402 1-648-541-12
DVW-CA510/CA510P
403-502 1-648-541-13
1-648-541-14,15,16,17,18
12
TP1
Y OUT
Q521-523
OUTPUT Y DEMOD(X)
103-26A TBC-24,102-25B
BUFF
Y W CLP PLS
103-19A TBC-24,102-19B
TBC-24,102-43B
SS(2/3),123-17A
L;Y DO PLS
103-16A AP,104-22A
L;Y DOP
L;RF Y VBLK
103-44A SS(3/3),123-19A
Y RF ENV(X)
103-31A SS(3/3),123-21A
DPR,117-11A
NTSC
METAL OXIDE
6.24 4.82
6.86 5.44
8.43 7.00 L;NOISELESS PB
103-10B SS(2/3),123-12B
TBC-24,102-45B
4 L;C DO PLS
103-16B SS(2/3),123-17B
C RF ENV(X)
103-33A DPR,117-12A
15
TP8
C OUT
Q722-Q724
OUTPUT C DEMOD(X)
103-28A TBC-24,102-28B
BUFF
C W CLP PLS
103-20A TBC-24,102-32B
NTSC
METAL OXIDE
6.95 6.07
5.80 4.93
REFERENCE SIGNAL IS
5.25 4.38
100% COLOR BARS SIGNAL.(PAL)
6.35 5.47
75% COLOR BARS SIGNAL.(NTSC)