Video Decoder - Philips A02E Service Manual

Circuit Diagrams and PWB Layouts
Small Signal Board: Video Decoder
2281 A9 2282 C9 2284 D9 2285 D9
1 2

VIDEO DECODER

A
STROBE1N
B2-31
STROBE1P
B2-32
DATA1N
B2-33
DATA1P
B2-34
STROBE3N
B2-35
B
STROBE3P
B2-36
DATA3N
B2-37
DATA3P
B2-38
STROBE2N
B2-39
STROBE2P
B2-40
DATA2N
B2-41
C
DATA2P
B2-42
F282
3281
1K
3282
1K
V-2FH
3283
B2-26
1K
I281
D FBL-SC1-IN
B18-45
H-2FH
B2-25
HV_SEC
B2-44
HV_PRM
B2-43
3139 123 5536.2
1 2
A02E 7.
3281 C1 3282 D2 3283 D2 3284 D2 5281 A9
3 4
7300-J
ADOC
EXT MAIN STEREO CHANNEL
( A-ADC1, A-ADC2 )
SSIF
EXT SUB MONO-CHANNEL
H23 DLINK1SN
( A-ADC3 )
H24 DLINK1SP A-ADC4
I 2
D1
H25 DLINK1DN
PRI DECODER
H26 DLINK1DP DATA
SYNC
E23 DLINK3SN
E24 DLINK3SP
2 I
D3
E25 DLINK3DN
E26 DLINK3DP
F24 DLINK2SN
F25 DLINK2SP
2 I
D2
G24 DLINK2DN
G25 DLINK2DP
SEC DECODER
P24 VSYNC1
EXT
SYNC-
P25 VSYNC2
MUX
N24 HSYNCFBL1
TDC-
N25 HSYNCFBL2 ANA
3284
1K R23 HVINFO2
P26 HVINFO1
3 4
52
5282 C9 5283 D9 5285 D9 7300-J A3
5 6
CVBS-YYC-DELTA FREQ-SELECT
+DAV INCR INCR
DELTA
OVERFL.
DTO
GEN DAV.
UV-DELTA INCR
+DAV
SRC AGC
SYNC-GAIN
AMP-SYNCYC SYNC-GAIN
SRC-YYC AMP-YYC CVBS-Y-GAIN
SRC-YYUV-CYC AMP-YYUV-CYC
SRC-UYUV AMP-UYUV
UV-GAIN
SRC-VYUV AMP-VYUV
PRF-SYNC-2FH SYNC-
MODULE-
2FH
HSYNC+DELTA
HSYNC-FBL+DELTA
TDC-
EXT-
DIG
SYNC FBL+DELTA
'SRC' FOR HFB1/H-SYNC
5 6
F281 D9 F282 C2 I281 D2
7 8
BANDOUTS
VIDDEC-INT
PI-A
REGISTER
DLINK-VDDA F23
AND
PI-D
PI INTERF
DLINK-VDDD D26
DMSD
ITS DLINK-VSSA G26
DEC
DEMUX
DLINK-VSSD J23
COMB
FORMAT
YC DET
HV-INFO
H/V
SYNC
FBLANK FBLANK
Y
FIFO SWITCH
UV
DELAY AND FAST-BLANK
VID1-DTC-VDDA P23
VID1-DTC-VSSA N26
VID1-DTC-VDD3 N23
PLLVSSA AE3
PLLVDDA AF3
7 8
9
A
VDDCO
5281
100Mhz / 220R
2281
100n
B
VDDCO
5282 C
100Mhz / 220R
2282
100n
VDDE
5283
100Mhz / 220R
3V2 DC
F281
2284
100n
VDDCO
D
5285
100Mhz / 220R
2285
100n
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