Sony BVW-55 Maintenance Manual page 653

X301
L:METAL
OSC
TP101
PB Y RF
R106,107
CN1
RP-107,102-1 1 ATT
TP102
Y DO RF
CN101/100
L:Y PCM MUTE
SV-206,303-12 22
S901-1 S901-4
ADJ DO ADJ
X302
L:METAL
OSC
TP301
PB C RF
R301,302
CN1
RP-107,102-3 3 ATT
TP302
C DO RF
CN101/100
L:C PCM MUTE
SV-206,303-14 24
BVW-55
Block diagram
IC101 TP103
TP104
Y RF Q101,102,104
Y EQ1
FL101 Q111,119,121
S101
IC101 123,126,129
TEST
METAL Y COS
VCA
ATT EQ
R146
C COS1 CONT
RV101:METAL RF PHASE EQ1
H:METAL/L:OXIDE
RV102:METAL RF PHASE EQ2
Q112,118,120
124,127,130
RV104:OXIDE RF PHASE EQ2
5V
Q902
R118 IC102,108
IC102
R119
H:AGC ON
S901-3
AGC OFF
IC302 TP303
TP304
C RF
C EQ1
FL301,302 Q304,306,309
S301
IC302 310,312,314
TEST
METAL C COS
VCA
ATT EQ
R333
C COS1 CONT
RV301:METAL RF PHASE EQ1
H:METAL/L:OXIDE
RV302:METAL RF PHASE EQ2
Q305,307,308
311,313,315
RV303:OXIDE RF PHASE EQ1
5V
RV304:OXIDE RF PHASE EQ2
IC304,308
IC304
H:AGC ON
DM-121 (1/3) DM-121 (1/3)
Block diagram
H:SEARCH SW LOW
H:SEARCH SW MID
H:SEARCH SW FLAT
SEARCH SW
Q103,105,106
Q107,108,109
IC103
SEARCH
LOW
LPF
AMP
Q115,116,117
MID +
Q110,113,114
FLAT
IC106
H:METAL/L:OXIDE
RV107:Y OXIDE A
RV108:Y OXIDE B
RV105:Y METAL A
RV106:Y METAL B
TP106 TP107
IC505
TP105
Y SUB Y MAIN
Q135
Y APF FL103
IC101
IC105
METAL
PHASE OMC
Y MAIN/SUB
EQ
COS EQ
RV111
METAL Y
Q133,134
RF LEVEL
IC102
DO
Y MAIN CONT
EQ
OXIDE Y SUB CONT
PHASE
EQ
IC104 RV109:Y METAL DO EQ RV112
RV110:Y OXIDE DO EQ OXIDE Y
RF LEVEL
Q137
H:METAL/L:OXIDE
H:Y FAST SEARCH
ERROR
AMP
IC106
H:METAL/L:OXIDE
RV307 C OXIDE A
RV308 C OXIDE B
RV305 C METAL A
RV306 C METAL B
TP306 TP307
IC702
TP305
C SUB C MAIN
Q320
C APF FL303
IC302
IC305
METAL
PHASE OMC
C MAIN/SUB
EQ
COS EQ
RV311
METAL C
Q318,319
RF LEVEL
IC304
DO
C MAIN CONT
EQ
OXIDE
C SUB CONT
PHASE
EQ
RV309:C METAL DO EQ RV312
RV310:C OXIDE DO EQ OXIDE C
RF LEVEL
Q322
H:METAL/L:OXIDE
ERROR
AMP
3-11 3-11
TP108
SRC SEL
Q122,125,128
SEARCH
TUNE
IC451
X451-454
H:SEARCHTUNE 6M
H:SEARCHTUNE 14M
TP112
ADV Y SW P
REF OSC ON MARKER OSC
ADV Y SW PLS
Y EE RF
Q138-143
TP109 Q450-452
Y OMC
TP111
Y DMRF
Y OMC CONT
RF
SWITCH
TP110
Y DO PLS
IC101
IC109,111
DO DET L:Y DO PLS
BUFF
Y DO THRESHOLD
L:Y DOP
L:RF Y BLK
TP113
Y ENVE
IC108
AMP
RV113
Y ENV GAIN Y RF ENV
IC651
X651-654
TP311
ADV C SW P
REF OSC ON MARKER OSC
ADV C SW PLS
C EE RF
TP308
Q651-653
C OMC
Q658,659,662
TP309
C OMC CONT
C DMRF
RF
SWITCH
TP310
C DO PLS
IC302
IC310,311
DO DET L:C DO PLS
BUFF
C DO THRESHOLD
L:RF C BLK
TP312
C ENVE
IC308
AMP C RF ENV
RV313
C ENV GAIN
CN101/100
23 SV-206,303-10
CN101/100
32 MD-122,52-43
Y DM(RF)
TO(2/3)
CN101/100
12 SV-206,303-3
CN101/100
20 SV-206,303-10
CN101/100
9 SV-206,303-5
CN101/100
21 SV-206,303-13
CN101/100
36 MD-122,52-45
C DM(RF)
TO(2/3)
CN101/100
10 SV-206,303-2
CN101/100
18 SV-206,303-9
RF DEMODULATOR, TBC
DM-121 (1/3)
LOT NO. 812-