Hitachi VTMX900ECT Manuel D'entretien page 114

3-32
VPS/PDC & OSD Part (VPO)
2500 B6 2503 B4 2506 E4 2509 E8 2512 E3 3504 B9
2501 B6 2504 B2 2507 D2 2510 E9 3502 B4 3505 C9
2502 B8 2505 E3 2508 D9 2511 E10 3503 B2 3506 C2
1 2
Interconnections:
AF page 3-27 AL page 3-24 AIO1 page 3-17 AIO2 page 3-15 DE page 3-19
FV page 3-21 FOME page 3-34 I/O page 3-33
A
5VA
B
I501
4507
VREC
for VPS only
C
I502
7501
BC857BW
4505
VOUT
D
3512
VSB
47R
for VPO only
C501
C500
E
GNDVPO
GNDVIO
1 2
3507 E3 3510 D1 3513 D8 3517 E8 3520 B3
3508 C3 3511 D9 3515 E10 3518 E2 3521 D1
3509 E4 3512 D2 3516 E9 3519 E3 4501 D8
3 4
FM ST page 3-22 FM NIC-page 3-23
PS page 3-14 VPO page 3-32 VS page 3-31 VS_S page 3-28
I506
2503
16 IREF
100n
2504
17 CVBS_SLICER
470n
20
14 PD2|VCO2
I509
12 PD1|VCO1
10 DAVN|EHB
2507 I511 5502 I510
13 SECAM_BY
10u
120p
21
15 CVBS_OUT
22
I512
18
CVBS_IN
11 HT_BLANK
3 4
20
OSD
0V
A: AC, 500mV/Div, 20us/Div A: AC, 500mV/Div, 20us/Div
IC 7502 PIN17 IC 7502 PIN15 VOUT
3-32
4502 A7 4505 D2 5500 A6 5503 E10 7502 C7 C501 E1
4503 E4 4507 B1 5501 A7 5504 A8 7503 E9 F500 B7
4504 C4 4508 E9 5502 D3 7501 C2 C500 E1 F501 B7
5 6 7
5VA
5VA
for VPO only
4502
for VPS
only
20 19
VDDA VDDD
Acquisition
I2C - Bus
Data/Sync-
SDA
Timing
Interface
Slicer and
ACQ. PLL
SCL
Data-
Acquisition
7502
SDA5652 for VPO
Memory for sliced Data
SDA5650 for VPS
and OSD Information
(512 Byte)
SYNC1
Character
CVBS
Generator Display Timing
Encoder
SYNC2
Sync/Pixelclock
Generation
Character
OSC_OUT
ROM
FSC|OSC_IN
not for VPS
VSSA VSSD
1 2 8
5 6 7
21 22
OSD OSD
0V 0V
A: AC, 500mV/Div, 20us/Div
IC 7502 PIN18 VSB
F502 D8 I502 C1 I506 B4 I511 D3 I514 C8 I518 E9
F503 E7 I504 E3 I509 C4 I512 D4 I516 E8 I519 E10
I501 B2 I505 E4 I510 D4 I513 B8 I517 D8 I542 C2
8 9
5V_STBY
5VA 5V_STBY
..
..V MEASURED IN PLAYBACK MODE
..V MEASURED IN RECORD MODE
5VA 5V_STBY
I513
3504
5
100R
I514
3505
4
100R
24
9
5VA 5VA
7
6 4501 not used
for VPS only
2508
F502
100n
3
I518 I519
2510
23
1n
7503
BC847BW
4508
for VPO only
8 9
23
OSD
0V
A: AC, 100mV/Div, 200ns/Div A: DC, 2 V/Div, 5ms/Div
IC 7502 PIN3 2FSC IC 7502 PIN9 OFP
10
OSCILLOGRAMS
A
B
SDA
SCL
C
OFP
D
3515
2FSC
2K2
E
10
24
OSD
0V